{"id":2534,"date":"2026-09-05T12:34:00","date_gmt":"2026-09-05T05:34:00","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/"},"modified":"2026-09-05T12:34:00","modified_gmt":"2026-09-05T05:34:00","slug":"so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/","title":{"rendered":"So s\u00e1nh Inox ch\u1ecbu nhi\u1ec7t 310S, 309S v\u00e0 304H: nhi\u1ec7t \u0111\u1ed9, \u1ee9ng d\u1ee5ng, gi\u00e1"},"content":{"rendered":"\n\n<div class=\"kk-star-ratings kksr-auto kksr-align-left kksr-valign-top\"\n    data-payload='{&quot;align&quot;:&quot;left&quot;,&quot;id&quot;:&quot;2534&quot;,&quot;slug&quot;:&quot;default&quot;,&quot;valign&quot;:&quot;top&quot;,&quot;ignore&quot;:&quot;&quot;,&quot;reference&quot;:&quot;auto&quot;,&quot;class&quot;:&quot;&quot;,&quot;count&quot;:&quot;0&quot;,&quot;legendonly&quot;:&quot;&quot;,&quot;readonly&quot;:&quot;&quot;,&quot;score&quot;:&quot;0&quot;,&quot;starsonly&quot;:&quot;&quot;,&quot;best&quot;:&quot;5&quot;,&quot;gap&quot;:&quot;5&quot;,&quot;greet&quot;:&quot;\u0110\u00e1nh gi\u00e1&quot;,&quot;legend&quot;:&quot;0\\\/5 - (0 b\u00ecnh ch\u1ecdn)&quot;,&quot;size&quot;:&quot;24&quot;,&quot;title&quot;:&quot;So s\u00e1nh Inox ch\u1ecbu nhi\u1ec7t 310S, 309S v\u00e0 304H: nhi\u1ec7t \u0111\u1ed9, \u1ee9ng d\u1ee5ng, gi\u00e1&quot;,&quot;width&quot;:&quot;0&quot;,&quot;_legend&quot;:&quot;{score}\\\/{best} - ({count} {votes})&quot;,&quot;font_factor&quot;:&quot;1.25&quot;}'>\n            \n<div class=\"kksr-stars\">\n    \n<div class=\"kksr-stars-inactive\">\n            <div class=\"kksr-star\" data-star=\"1\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"2\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"3\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"4\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" data-star=\"5\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n    \n<div class=\"kksr-stars-active\" style=\"width: 0px;\">\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n            <div class=\"kksr-star\" style=\"padding-right: 5px\">\n            \n\n<div class=\"kksr-icon\" style=\"width: 24px; height: 24px;\"><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n                \n\n<div class=\"kksr-legend\" style=\"font-size: 19.2px;\">\n            <span class=\"kksr-muted\">\u0110\u00e1nh gi\u00e1<\/span>\n    <\/div>\n    <\/div>\n<div class=\"custom-toc\">\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Noi_dung_chinh\" >N\u1ed9i dung ch\u00ednh<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Tong_quan_nhanh_ve_310S_309S_304H\" >T\u1ed5ng quan nhanh v\u1ec1 310S, 309S, 304H<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Chiu_nhiet_va_chong_oxy_hoa_ai_vuot_troi_o_dai_nhiet_nao\" >Ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng oxy h\u00f3a: ai v\u01b0\u1ee3t tr\u1ed9i \u1edf d\u1ea3i nhi\u1ec7t n\u00e0o?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Nhiet_do_lam_viec_khuyen_nghi_moi_truong_oxy_hoa_kho\" >Nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c khuy\u1ebfn ngh\u1ecb (m\u00f4i tr\u01b0\u1eddng oxy h\u00f3a, kh\u00f4)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Anh_huong_moi_truong_khi_dac_thu\" >\u1ea2nh h\u01b0\u1edfng m\u00f4i tr\u01b0\u1eddng kh\u00ed \u0111\u1eb7c th\u00f9<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Do_ben_rao_creep_va_ung_dung_chiu_ap\" >\u0110\u1ed9 b\u1ec1n r\u00e3o (creep) v\u00e0 \u1ee9ng d\u1ee5ng ch\u1ecbu \u00e1p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Tinh_chat_co_hoc_va_vat_ly_tieu_bieu_nhiet_do_phong\" >T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 v\u1eadt l\u00fd ti\u00eau bi\u1ec3u (nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Kha_nang_gia_cong_%E2%80%93_han_%E2%80%93_xu_ly_nhiet\" >Kh\u1ea3 n\u0103ng gia c\u00f4ng \u2013 h\u00e0n \u2013 x\u1eed l\u00fd nhi\u1ec7t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Ung_dung_thuc_te_tai_Viet_Nam\" >\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf t\u1ea1i Vi\u1ec7t Nam<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Uunhuoc_diem_va_chi_phi_tham_khao\" >\u01afu\/nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 chi ph\u00ed tham kh\u1ea3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Cach_chon_nhanh_theo_dieu_kien_lam_viec\" >C\u00e1ch ch\u1ecdn nhanh theo \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Tieu_chuan_chung_chi_kiem_tra_chat_luong\" >Ti\u00eau chu\u1ea9n, ch\u1ee9ng ch\u1ec9, ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Cac_cau_hoi_thuong_gap\" >C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/inoxcuongthinh.com\/so-sanh-inox-chiu-nhiet-310s-309s-va-304h-nhiet-do-ung-dung-gia\/#Ket_luan_chon_mac_nao_cho_bai_toan_cua_ban\" >K\u1ebft lu\u1eadn: ch\u1ecdn m\u00e1c n\u00e0o cho b\u00e0i to\u00e1n c\u1ee7a b\u1ea1n?<\/a><\/li><\/ul><\/nav><\/div>\n<h3><span class=\"ez-toc-section\" id=\"Noi_dung_chinh\"><\/span>N\u1ed9i dung ch\u00ednh<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul>\n<li><a href=\"#toc-0-tong-quan-nhanh-ve-310s-309s-304h\">T\u1ed5ng quan nhanh v\u1ec1 310S, 309S, 304H<\/a><\/li>\n<li><a href=\"#toc-1-chiu-nhiet-va-chong-oxy-hoa-ai-vuot-troi-o-dai-nhi\">Ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng oxy h\u00f3a: ai v\u01b0\u1ee3t tr\u1ed9i \u1edf d\u1ea3i nhi\u1ec7t n\u00e0o?<\/a><\/li>\n<li><a href=\"#toc-2-do-ben-rao-creep-va-ung-dung-chiu-ap\">\u0110\u1ed9 b\u1ec1n r\u00e3o (creep) v\u00e0 \u1ee9ng d\u1ee5ng ch\u1ecbu \u00e1p<\/a><\/li>\n<li><a href=\"#toc-3-tinh-chat-co-hoc-va-vat-ly-tieu-bieu-nhiet-do-phon\">T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 v\u1eadt l\u00fd ti\u00eau bi\u1ec3u (nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng)<\/a><\/li>\n<li><a href=\"#toc-4-kha-nang-gia-cong-han-xu-ly-nhiet\">Kh\u1ea3 n\u0103ng gia c\u00f4ng \u2013 h\u00e0n \u2013 x\u1eed l\u00fd nhi\u1ec7t<\/a><\/li>\n<li><a href=\"#toc-5-ung-dung-thuc-te-tai-viet-nam\">\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf t\u1ea1i Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-6-uunhuoc-diem-va-chi-phi-tham-khao\">\u01afu\/nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 chi ph\u00ed tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-7-cach-chon-nhanh-theo-dieu-kien-lam-viec\">C\u00e1ch ch\u1ecdn nhanh theo \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c<\/a><\/li>\n<li><a href=\"#toc-8-tieu-chuan-chung-chi-kiem-tra-chat-luong\">Ti\u00eau chu\u1ea9n, ch\u1ee9ng ch\u1ec9, ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng<\/a><\/li>\n<li><a href=\"#toc-9-cac-cau-hoi-thuong-gap\">C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-10-ket-luan-chon-mac-nao-cho-bai-toan-cua-ban\">K\u1ebft lu\u1eadn: ch\u1ecdn m\u00e1c n\u00e0o cho b\u00e0i to\u00e1n c\u1ee7a b\u1ea1n?<\/a><\/li>\n<\/ul>\n<\/div>\n<p>C\u00e1c m\u00e1c inox ch\u1ecbu nhi\u1ec7t th\u01b0\u1eddng \u0111\u01b0\u1ee3c nh\u1eafc \u0111\u1ebfn nhi\u1ec1u nh\u1ea5t l\u00e0 310S, 309S v\u00e0 304H. B\u00e0i vi\u1ebft n\u00e0y \u0111i th\u1eb3ng v\u00e0o so s\u00e1nh kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t, b\u1ec1n r\u00e3o, m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c, gia c\u00f4ng \u2013 h\u00e0n v\u00e0 chi ph\u00ed, \u0111\u1ec3 gi\u00fap k\u1ef9 s\u01b0, nh\u00e0 th\u1ea7u, ch\u1ee7 x\u01b0\u1edfng ch\u1ecdn \u0111\u00fang v\u1eadt li\u1ec7u ngay t\u1eeb \u0111\u1ea7u. \u0110\u00e2y c\u0169ng l\u00e0 m\u1ed9t ph\u1ea7n quan tr\u1ecdng trong b\u1ee9c tranh t\u1ed5ng th\u1ec3 v\u1ec1 c\u00e1c m\u00e1c inox ph\u1ed5 bi\u1ebfn d\u00f9ng trong c\u00f4ng nghi\u1ec7p.<\/p>\n<h2 id=\"toc-0-tong-quan-nhanh-ve-310s-309s-304h\"><span class=\"ez-toc-section\" id=\"Tong_quan_nhanh_ve_310S_309S_304H\"><\/span>T\u1ed5ng quan nhanh v\u1ec1 310S, 309S, 304H<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Inox 310S (UNS S31008; EN 1.4845; k\u00fd hi\u1ec7u ch\u00e2u \u00c2u X8CrNi25-21): Austenitic, Cr cao 24\u201326%, Ni 19\u201322%, C \u22640.08%. Chuy\u00ean cho m\u00f4i tr\u01b0\u1eddng oxy h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 r\u1ea5t cao.<br \/>\n&#8211; Inox 309S (UNS S30908; EN 1.4833; X8CrNi23-13): Cr 22\u201324%, Ni 12\u201315%, C \u22640.08%. Trung gian gi\u1eefa 304 v\u00e0 310S v\u1ec1 ch\u1ecbu nhi\u1ec7t\/gi\u00e1.<br \/>\n&#8211; Inox 304H (UNS S30409; EN 1.4948): Cr 18\u201320%, Ni 8\u201311%, C 0.04\u20130.10 (cao h\u01a1n 304\/304L). T\u1ed1i \u01b0u h\u00f3a \u0111\u1ed9 b\u1ec1n r\u00e3o \u1edf 550\u2013750\u00b0C v\u00e0 d\u00f9ng cho thi\u1ebft b\u1ecb ch\u1ecbu \u00e1p theo code.<\/p>\n<p>Ghi ch\u00fa ti\u00eau chu\u1ea9n ph\u1ed5 bi\u1ebfn: ASTM A240 (t\u1ea5m\/cu\u1ed9n), A312 (\u1ed1ng h\u00e0n\/\u0111\u00fac), A213 (\u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t), A182 (m\u1eb7t b\u00edch). 304H, 309S, 310S \u0111\u1ec1u c\u00f3 trong ti\u00eau chu\u1ea9n ASTM\/ASME; 304H c\u00f3 m\u1ee9c \u1ee9ng su\u1ea5t cho ph\u00e9p ri\u00eang cho nhi\u1ec7t \u0111\u1ed9 cao trong ASME (Section II-D). Tham kh\u1ea3o: ASTM A240\/A312; ASME Section II-D; Outokumpu Therma 310S\/309S\/304H; Atlas Steels Technical Handbook.<\/p>\n<h2 id=\"toc-1-chiu-nhiet-va-chong-oxy-hoa-ai-vuot-troi-o-dai-nhi\"><span class=\"ez-toc-section\" id=\"Chiu_nhiet_va_chong_oxy_hoa_ai_vuot_troi_o_dai_nhiet_nao\"><\/span>Ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng oxy h\u00f3a: ai v\u01b0\u1ee3t tr\u1ed9i \u1edf d\u1ea3i nhi\u1ec7t n\u00e0o?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Nhiet_do_lam_viec_khuyen_nghi_moi_truong_oxy_hoa_kho\"><\/span>Nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c khuy\u1ebfn ngh\u1ecb (m\u00f4i tr\u01b0\u1eddng oxy h\u00f3a, kh\u00f4)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; 310S: li\u00ean t\u1ee5c t\u1edbi kho\u1ea3ng 1100\u00b0C; gi\u00e1n \u0111o\u1ea1n t\u1edbi 1150\u00b0C.<br \/>\n&#8211; 309S: li\u00ean t\u1ee5c t\u1edbi kho\u1ea3ng 1000\u20131050\u00b0C; gi\u00e1n \u0111o\u1ea1n t\u1edbi 1050\u00b0C.<br \/>\n&#8211; 304H: li\u00ean t\u1ee5c t\u1edbi kho\u1ea3ng 870\u00b0C; gi\u00e1n \u0111o\u1ea1n t\u1edbi 925\u00b0C.<br \/>\nGi\u1edbi h\u1ea1n tr\u00ean ph\u1ee5 thu\u1ed9c th\u00e0nh ph\u1ea7n th\u1ef1c t\u1ebf, b\u1ec1 m\u1eb7t, t\u1ed1c \u0111\u1ed9 d\u00f2ng kh\u00ed, chu k\u1ef3 nhi\u1ec7t v\u00e0 t\u1ea1p ch\u1ea5t kh\u00ed. Tham kh\u1ea3o: Outokumpu Therma 310S\/309S\/304H; AZoM datasheets SS310\/SS309\/SS304H.<\/p>\n<p>K\u1ebft lu\u1eadn nhanh:<br \/>\n&#8211; C\u1ea7n >1000\u00b0C \u1ed5n \u0111\u1ecbnh trong l\u00f2\/\u1ed1ng \u0111\u1ed1t: 310S l\u00e0 l\u1ef1a ch\u1ecdn an to\u00e0n.<br \/>\n&#8211; 900\u20131000\u00b0C, c\u00f3 dao \u0111\u1ed9ng nhi\u1ec7t th\u01b0\u1eddng xuy\u00ean: 309S c\u00e2n b\u1eb1ng gi\u1eefa ch\u1ecbu nhi\u1ec7t v\u00e0 chi ph\u00ed.<br \/>\n&#8211; 550\u2013750\u00b0C, thi\u1ebft b\u1ecb ch\u1ecbu \u00e1p (n\u1ed3i h\u01a1i, qu\u00e1 nhi\u1ec7t, \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t): 304H th\u01b0\u1eddng l\u00e0 m\u00e1c \u201cchu\u1ea9n code\u201d.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Anh_huong_moi_truong_khi_dac_thu\"><\/span>\u1ea2nh h\u01b0\u1edfng m\u00f4i tr\u01b0\u1eddng kh\u00ed \u0111\u1eb7c th\u00f9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Oxy h\u00f3a kh\u00f4: 310S > 309S > 304H.<br \/>\n&#8211; Carbur h\u00f3a\/nitr h\u00f3a nh\u1eb9: 309S v\u00e0 310S t\u1ed1t h\u01a1n 304H; \u01b0u ti\u00ean 310S khi carbon potential cao v\u00e0 c\u00f3 chu k\u1ef3 nhi\u1ec7t. V\u1edbi carbur h\u00f3a n\u1eb7ng, c\u00e2n nh\u1eafc h\u1ee3p kim chuy\u00ean d\u1ee5ng (v\u00ed d\u1ee5 25\/35Nb, RA330) ho\u1eb7c ph\u1ee7 nh\u00f4m\/silicon.<br \/>\n&#8211; M\u00f4i tr\u01b0\u1eddng kh\u1eed ch\u1ee9a l\u01b0u hu\u1ef3nh (H2S, SO2 kh\u1eed): c\u00e1c m\u00e1c austenitic Cr-Ni n\u00e0y \u0111\u1ec1u gi\u1ea3m tu\u1ed5i th\u1ecd; 309S\/310S c\u00f3 th\u1ec3 d\u00f9ng h\u1ea1n ch\u1ebf nh\u01b0ng c\u1ea7n th\u1eadn tr\u1ecdng, \u0111\u00f4i khi ph\u1ea3i chuy\u1ec3n sang h\u1ee3p kim Ni cao.<br \/>\n&#8211; H\u01a1i \u1ea9m, clo mu\u1ed1i \u1edf nhi\u1ec7t \u0111\u1ed9 cao: nguy c\u01a1 oxy h\u00f3a t\u0103ng t\u1ed1c v\u00e0 \u0103n m\u00f2n do clo; n\u1ebfu c\u00f3 mu\u1ed1i clorua, 309S\/310S kh\u00f4ng ph\u1ea3i l\u1ef1a ch\u1ecdn l\u00fd t\u01b0\u1edfng, c\u1ea7n ki\u1ec3m so\u00e1t l\u1eafng \u0111\u1ecdng ho\u1eb7c ch\u1ecdn v\u1eadt li\u1ec7u\/ch\u1ed1ng b\u00e1m.<br \/>\nTham kh\u1ea3o: Outokumpu Therma guidelines; Atlas Steels HR stainless; Alleima\/Sandvik heat-resistant steels.<\/p>\n<h2 id=\"toc-2-do-ben-rao-creep-va-ung-dung-chiu-ap\"><span class=\"ez-toc-section\" id=\"Do_ben_rao_creep_va_ung_dung_chiu_ap\"><\/span>\u0110\u1ed9 b\u1ec1n r\u00e3o (creep) v\u00e0 \u1ee9ng d\u1ee5ng ch\u1ecbu \u00e1p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; 304H: H\u00e0m l\u01b0\u1ee3ng C cao (0.04\u20130.10%) t\u0103ng b\u1ec1n r\u00e3o r\u00f5 r\u1ec7t so v\u1edbi 304\/304L. \u0110\u01b0\u1ee3c ASME ph\u00ea duy\u1ec7t \u1ee9ng su\u1ea5t cho ph\u00e9p cho c\u00e1c ph\u1ea7n t\u1eed ch\u1ecbu \u00e1p \u1edf nhi\u1ec7t \u0111\u1ed9 cao; th\u01b0\u1eddng d\u00f9ng 550\u2013750\u00b0C trong n\u1ed3i h\u01a1i, qu\u00e1 nhi\u1ec7t, b\u1ed9 gia nhi\u1ec7t kh\u00f4ng kh\u00ed, \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t l\u00f2 h\u01a1i.<br \/>\n&#8211; 309S: B\u1ec1n r\u00e3o trung b\u00ecnh, \u00edt \u0111\u01b0\u1ee3c ch\u1ecdn cho thi\u1ebft b\u1ecb ch\u1ecbu \u00e1p so v\u1edbi 304H; d\u00f9ng nhi\u1ec1u \u1edf chi ti\u1ebft l\u00f2, t\u1ea5m che nhi\u1ec7t, ghi l\u00f2.<br \/>\n&#8211; 310S: Gi\u1eef \u0111\u1ed9 b\u1ec1n t\u1ed1t khi >900\u00b0C v\u00e0 \u00edt b\u1ecb \u201cscale spallation\u201d khi oxy h\u00f3a, ph\u00f9 h\u1ee3p gi\u00e0n l\u00f2, bu\u1ed3ng \u0111\u1ed1t, \u1ed1ng \u0111\u1ed1t, t\u1ea5m che l\u00f2. V\u1edbi thi\u1ebft b\u1ecb ch\u1ecbu \u00e1p, v\u1eabn c\u1ea7n tra \u1ee9ng su\u1ea5t cho ph\u00e9p theo ASME\/EN tr\u01b0\u1edbc khi thi\u1ebft k\u1ebf.<br \/>\nTham kh\u1ea3o: ASME Section II-D; Outokumpu Therma 304H\/309S\/310S; AZoM 304H\/310.<\/p>\n<h2 id=\"toc-3-tinh-chat-co-hoc-va-vat-ly-tieu-bieu-nhiet-do-phon\"><span class=\"ez-toc-section\" id=\"Tinh_chat_co_hoc_va_vat_ly_tieu_bieu_nhiet_do_phong\"><\/span>T\u00ednh ch\u1ea5t c\u01a1 h\u1ecdc v\u00e0 v\u1eadt l\u00fd ti\u00eau bi\u1ec3u (nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng)<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; C\u01b0\u1eddng \u0111\u1ed9 ch\u1ea3y (0.2%): kho\u1ea3ng 205 MPa cho c\u1ea3 304H\/309S\/310S.<br \/>\n&#8211; \u0110\u1ed9 b\u1ec1n k\u00e9o: kho\u1ea3ng \u2265515 MPa; \u0111\u1ed9 gi\u00e3n d\u00e0i ~40%.<br \/>\n&#8211; \u0110\u1ed9 c\u1ee9ng: t\u1ed1i \u0111a ~192 HB (theo ASTM).<br \/>\n&#8211; H\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t: austenitic nh\u00ecn chung cao; 310S v\u00e0 309S x\u1ea5p x\u1ec9 15\u201316 \u00b5m\/m\u00b7K (20\u2013100\u00b0C), t\u0103ng \u0111\u00e1ng k\u1ec3 \u1edf nhi\u1ec7t \u0111\u1ed9 cao.<br \/>\n&#8211; \u0110\u1ed9 d\u1eabn nhi\u1ec7t: th\u1ea5p (x\u1ea5p x\u1ec9 14\u201316 W\/m\u00b7K \u1edf 20\u00b0C).<br \/>\n&#8211; T\u1eeb t\u00ednh: h\u1ea7u nh\u01b0 kh\u00f4ng nhi\u1ec5m t\u1eeb \u1edf tr\u1ea1ng th\u00e1i \u1ee7; c\u00f3 th\u1ec3 h\u01a1i nhi\u1ec5m t\u1eeb sau gia c\u00f4ng ngu\u1ed9i\/h\u00e0n.<br \/>\nG\u1ee3i \u00fd k\u1ef9 thu\u1eadt: 309S c\u00f3 xu h\u01b0\u1edbng ch\u1ecbu s\u1ed1c nhi\u1ec7t t\u1ed1t h\u01a1n \u0111\u00f4i ch\u00fat do h\u00e0m l\u01b0\u1ee3ng Ni th\u1ea5p h\u01a1n (h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nh\u1ec9nh th\u1ea5p), nh\u01b0ng ch\u00eanh l\u1ec7ch kh\u00f4ng l\u1edbn; thi\u1ebft k\u1ebf c\u01a1 kh\u00ed v\u00e0 b\u1ec1 d\u00e0y v\u1eabn l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh. Tham kh\u1ea3o: Atlas Steels; Outokumpu datasheets.<\/p>\n<h2 id=\"toc-4-kha-nang-gia-cong-han-xu-ly-nhiet\"><span class=\"ez-toc-section\" id=\"Kha_nang_gia_cong_%E2%80%93_han_%E2%80%93_xu_ly_nhiet\"><\/span>Kh\u1ea3 n\u0103ng gia c\u00f4ng \u2013 h\u00e0n \u2013 x\u1eed l\u00fd nhi\u1ec7t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Gia c\u00f4ng ngu\u1ed9i\/\u0111\u1ecbnh h\u00ecnh: t\u01b0\u01a1ng t\u1ef1 304; 310S c\u1ee9ng h\u01a1n \u0111\u00f4i ch\u00fat. Tr\u00e1nh l\u00e0m vi\u1ec7c \u1edf 600\u2013900\u00b0C k\u00e9o d\u00e0i \u0111\u1ec3 h\u1ea1n ch\u1ebf nh\u1ea1y c\u1ea3m h\u00f3a.<br \/>\n&#8211; Gia c\u00f4ng n\u00f3ng: 1150\u20131200\u00b0C, l\u00e0m vi\u1ec7c nhanh, l\u00e0m ngu\u1ed9i n\u01b0\u1edbc\/kh\u00f4ng kh\u00ed c\u01b0\u1ee1ng b\u1ee9c \u0111\u1ec3 gi\u1eef t\u1ed5 ch\u1ee9c austenite.<br \/>\n&#8211; H\u00e0n: \u0111\u1ec1u h\u00e0n t\u1ed1t b\u1eb1ng SMAW\/GTAW\/GMAW.<br \/>\n  &#8211; 304H: d\u00f9ng que\/\u0111\u0169a 308H (d\u1ecbch v\u1ee5 nhi\u1ec7t \u0111\u1ed9 cao) ho\u1eb7c 308L (d\u1ecbch v\u1ee5 th\u01b0\u1eddng).<br \/>\n  &#8211; 309S: d\u00f9ng 309\/309L (\u0111\u1eb7c bi\u1ec7t khi n\u1ed1i v\u1edbi th\u00e9p carbon\/th\u1ea5p h\u1ee3p kim).<br \/>\n  &#8211; 310S: d\u00f9ng 310\/310S (ER310, E310) \u0111\u1ec3 duy tr\u00ec Cr-Ni cao.<br \/>\n&#8211; X\u1eed l\u00fd sau h\u00e0n: kh\u00f4ng b\u1eaft bu\u1ed9c; n\u1ebfu chi ti\u1ebft d\u00e0y\/h\u00ecnh h\u1ecdc ph\u1ee9c t\u1ea1p, c\u00e2n nh\u1eafc \u1ee7 h\u00f2a tan 1040\u20131120\u00b0C v\u00e0 l\u00e0m ngu\u1ed9i nhanh.<br \/>\nTham kh\u1ea3o: AWS D1.6, EN ISO 14343; Atlas\/AZO\u043c welding of HR stainless.<\/p>\n<h2 id=\"toc-5-ung-dung-thuc-te-tai-viet-nam\"><span class=\"ez-toc-section\" id=\"Ung_dung_thuc_te_tai_Viet_Nam\"><\/span>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf t\u1ea1i Vi\u1ec7t Nam<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; 310S:<br \/>\n  &#8211; Linh ki\u1ec7n l\u00f2 c\u00f4ng nghi\u1ec7p: t\u1ea5m che nhi\u1ec7t, v\u00e1ch l\u00f2, \u1ed1ng \u0111\u1ed1t, gi\u00e0n l\u00f2 nhi\u1ec7t luy\u1ec7n, \u1ed1ng kh\u00f3i n\u00f3ng, \u0111\u1ea7u \u0111\u1ed1t, \u1ed1ng stenter d\u1ec7t nhu\u1ed9m.<br \/>\n  &#8211; Ng\u00e0nh xi m\u0103ng, g\u1ed1m s\u1ee9, x\u1eed l\u00fd r\u00e1c, l\u00f2 s\u1ea5y gi\u00e1n nhi\u1ec7t >1000\u00b0C.<br \/>\n&#8211; 309S:<br \/>\n  &#8211; T\u1ea5m ch\u1eafn nhi\u1ec7t, ghi l\u00f2, b\u0103ng t\u1ea3i l\u00f2, \u1ed1ng d\u1eabn kh\u00ed n\u00f3ng ~900\u20131000\u00b0C, b\u1ed9 ph\u1eadn c\u00f3 chu k\u1ef3 nhi\u1ec7t d\u00e0y.<br \/>\n&#8211; 304H:<br \/>\n  &#8211; N\u1ed3i h\u01a1i, b\u1ed9 qu\u00e1 nhi\u1ec7t, b\u1ed9 h\u00e2m n\u01b0\u1edbc, \u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t v\u00f9ng 550\u2013750\u00b0C; thi\u1ebft b\u1ecb h\u00f3a d\u1ea7u \u2013 nhi\u1ec7t \u0111i\u1ec7n c\u1ea7n ch\u1ee9ng ch\u1ec9 ASME\/EN cho \u00e1p l\u1ef1c.  <\/p>\n<h2 id=\"toc-6-uunhuoc-diem-va-chi-phi-tham-khao\"><span class=\"ez-toc-section\" id=\"Uunhuoc_diem_va_chi_phi_tham_khao\"><\/span>\u01afu\/nh\u01b0\u1ee3c \u0111i\u1ec3m v\u00e0 chi ph\u00ed tham kh\u1ea3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; 310S<br \/>\n  &#8211; \u01afu: ch\u1ecbu oxy h\u00f3a cao nh\u1ea5t, gi\u1eef c\u01b0\u1eddng \u0111\u1ed9 \u1edf >900\u00b0C, ch\u1ed1ng bong tr\u00f3c l\u1edbp oxit t\u1ed1t.<br \/>\n  &#8211; Nh\u01b0\u1ee3c: gi\u00e1 cao nh\u1ea5t; kh\u00f4ng ph\u00f9 h\u1ee3p m\u00f4i tr\u01b0\u1eddng l\u01b0u hu\u1ef3nh kh\u1eed; ch\u1ed1ng \u0103n m\u00f2n dung d\u1ecbch kh\u00f4ng v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi 304\/316.<br \/>\n  &#8211; Gi\u00e1 tham kh\u1ea3o VN: ~2.1\u20132.6 l\u1ea7n 304L (bi\u1ebfn \u0111\u1ed9ng theo Ni\/Cr).<br \/>\n&#8211; 309S<br \/>\n  &#8211; \u01afu: c\u00e2n b\u1eb1ng ch\u1ecbu nhi\u1ec7t \u2013 chi ph\u00ed; ch\u1ecbu chu k\u1ef3 nhi\u1ec7t t\u1ed1t; h\u00e0n t\u1ed1t.<br \/>\n  &#8211; Nh\u01b0\u1ee3c: tr\u1ea7n nhi\u1ec7t th\u1ea5p h\u01a1n 310S; b\u1ec1n r\u00e3o kh\u00f4ng b\u1eb1ng 304H \u1edf 550\u2013750\u00b0C.<br \/>\n  &#8211; Gi\u00e1 tham kh\u1ea3o: ~1.6\u20131.9 l\u1ea7n 304L.<br \/>\n&#8211; 304H<br \/>\n  &#8211; \u01afu: b\u1ec1n r\u00e3o t\u1ed1t, \u201cchu\u1ea9n code\u201d cho thi\u1ebft b\u1ecb \u00e1p l\u1ef1c; s\u1eb5n ngu\u1ed3n \u1ed1ng\/\u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t.<br \/>\n  &#8211; Nh\u01b0\u1ee3c: ch\u1ed1ng oxy h\u00f3a k\u00e9m h\u01a1n 309S\/310S \u1edf >900\u00b0C; nh\u1ea1y c\u1ea3m h\u00f3a n\u1ebfu gi\u1eef l\u00e2u \u1edf 600\u2013800\u00b0C.<br \/>\n  &#8211; Gi\u00e1 tham kh\u1ea3o: +5\u201315% so v\u1edbi 304\/304L.<br \/>\nL\u01b0u \u00fd: Gi\u00e1 ch\u1ec9 mang t\u00ednh \u0111\u1ecbnh h\u01b0\u1edbng; h\u00e3y y\u00eau c\u1ea7u b\u00e1o gi\u00e1 c\u1eadp nh\u1eadt theo chi\u1ec1u d\u00e0y, quy c\u00e1ch, ch\u1ee9ng ch\u1ec9 v\u00e0 th\u1ecb tr\u01b0\u1eddng Ni\/Cr.<\/p>\n<h2 id=\"toc-7-cach-chon-nhanh-theo-dieu-kien-lam-viec\"><span class=\"ez-toc-section\" id=\"Cach_chon_nhanh_theo_dieu_kien_lam_viec\"><\/span>C\u00e1ch ch\u1ecdn nhanh theo \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; >1000\u00b0C, m\u00f4i tr\u01b0\u1eddng oxy h\u00f3a kh\u00f4, th\u1eddi gian d\u00e0i: ch\u1ecdn 310S.<br \/>\n&#8211; 900\u20131000\u00b0C, c\u00f3 chu k\u1ef3 nhi\u1ec7t th\u01b0\u1eddng xuy\u00ean, c\u1ea7n t\u1ed1i \u01b0u chi ph\u00ed: \u01b0u ti\u00ean 309S.<br \/>\n&#8211; 550\u2013750\u00b0C, chi ti\u1ebft ch\u1ecbu \u00e1p (theo ASME\/EN): ch\u1ecdn 304H.<br \/>\n&#8211; Carbur h\u00f3a nh\u1eb9\/tr\u1ed9n oxy h\u00f3a: 310S ho\u1eb7c 309S; c\u00e2n nh\u1eafc ph\u1ee7 b\u1ea3o v\u1ec7 n\u1ebfu carbon potential cao.<br \/>\n&#8211; C\u00f3 H2S\/kh\u00ed l\u01b0u hu\u1ef3nh kh\u1eed: c\u00e2n nh\u1eafc l\u1ea1i v\u1eadt li\u1ec7u; 309S\/310S ch\u1ec9 d\u00f9ng h\u1ea1n ch\u1ebf, tham kh\u1ea3o h\u1ee3p kim Ni cao.<br \/>\n&#8211; M\u00f4i tr\u01b0\u1eddng n\u01b0\u1edbc bi\u1ec3n\/Cl- \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p: 316\/316L ph\u00f9 h\u1ee3p h\u01a1n; 309S\/310S kh\u00f4ng \u01b0u th\u1ebf trong \u0103n m\u00f2n dung d\u1ecbch.<\/p>\n<h2 id=\"toc-8-tieu-chuan-chung-chi-kiem-tra-chat-luong\"><span class=\"ez-toc-section\" id=\"Tieu_chuan_chung_chi_kiem_tra_chat_luong\"><\/span>Ti\u00eau chu\u1ea9n, ch\u1ee9ng ch\u1ec9, ki\u1ec3m tra ch\u1ea5t l\u01b0\u1ee3ng<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m: ASTM A240 (t\u1ea5m\/cu\u1ed9n), A312 (\u1ed1ng), A213 (\u1ed1ng trao \u0111\u1ed5i nhi\u1ec7t), A276 (thanh), A182 (m\u1eb7t b\u00edch).<br \/>\n&#8211; Ch\u1ee9ng ch\u1ec9: Mill Test Certificate 3.1\/3.2; khai b\u00e1o th\u00e0nh ph\u1ea7n, c\u01a1 t\u00ednh, nhi\u1ec7t luy\u1ec7n.<br \/>\n&#8211; Ki\u1ec3m tra t\u1ea1i x\u01b0\u1edfng: PMI (quang ph\u1ed5), \u0111\u1ed9 d\u00e0y, b\u1ec1 m\u1eb7t; v\u1edbi chi ti\u1ebft l\u00f2: ki\u1ec3m tra bi\u1ebfn d\u1ea1ng sau th\u1eed nhi\u1ec7t; v\u1edbi 304H cho \u00e1p l\u1ef1c: NDT theo code (UT\/RT), th\u1ee7y l\u1ef1c.<br \/>\n&#8211; Dung sai v\u00e0 b\u1ec1 m\u1eb7t: 2B\/BA cho t\u1ea5m m\u1ecfng; No.1 cho t\u1ea5m c\u00e1n n\u00f3ng ch\u1ecbu nhi\u1ec7t.  <\/p>\n<h2 id=\"toc-9-cac-cau-hoi-thuong-gap\"><span class=\"ez-toc-section\" id=\"Cac_cau_hoi_thuong_gap\"><\/span>C\u00e1c c\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; 310S c\u00f3 \u201cg\u1ec9\u201d \u0111\u1ecf \u1edf nhi\u1ec7t cao? L\u1edbp oxit Cr \u1ed5n \u0111\u1ecbnh gi\u00fap ch\u1ed1ng oxy h\u00f3a t\u1ed1t, nh\u01b0ng trong m\u00f4i tr\u01b0\u1eddng b\u1ea9n\/ch\u1ee9a mu\u1ed1i ho\u1eb7c chu k\u1ef3 s\u1ed1c nhi\u1ec7t m\u1ea1nh, l\u1edbp oxit c\u00f3 th\u1ec3 bong tr\u00f3c v\u00e0 xu\u1ea5t hi\u1ec7n m\u00e0u; kh\u00f4ng ph\u1ea3i g\u1ec9 r\u1ed7 theo ngh\u0129a \u0103n m\u00f2n \u01b0\u1edbt.<br \/>\n&#8211; 304H kh\u00e1c 304 \u1edf \u0111\u00e2u? Ch\u1ee7 y\u1ebfu l\u00e0 h\u00e0m l\u01b0\u1ee3ng C cao h\u01a1n \u0111\u1ec3 t\u0103ng b\u1ec1n r\u00e3o v\u00e0 \u0111\u01b0\u1ee3c code ph\u00ea duy\u1ec7t cho d\u1ecbch v\u1ee5 nhi\u1ec7t \u0111\u1ed9 cao.<br \/>\n&#8211; 309S\/310S c\u00f3 ch\u1ed1ng r\u1ed7 pitting t\u1ed1t h\u01a1n 316L? Kh\u00f4ng. D\u00f9 Cr cao, thi\u1ebfu Mo n\u00ean kh\u1ea3 n\u0103ng ch\u1ed1ng r\u1ed7 trong Cl- th\u01b0\u1eddng k\u00e9m h\u01a1n 316L.<br \/>\n&#8211; Ba m\u00e1c n\u00e0y c\u00f3 nhi\u1ec5m t\u1eeb kh\u00f4ng? Tr\u1ea1ng th\u00e1i \u1ee7 h\u1ea7u nh\u01b0 kh\u00f4ng; sau c\u00e1n\/l\u1ed1c\/h\u00e0n c\u00f3 th\u1ec3 h\u01a1i nhi\u1ec5m t\u1eeb.<\/p>\n<h2 id=\"toc-10-ket-luan-chon-mac-nao-cho-bai-toan-cua-ban\"><span class=\"ez-toc-section\" id=\"Ket_luan_chon_mac_nao_cho_bai_toan_cua_ban\"><\/span>K\u1ebft lu\u1eadn: ch\u1ecdn m\u00e1c n\u00e0o cho b\u00e0i to\u00e1n c\u1ee7a b\u1ea1n?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; N\u1ebfu m\u1ee5c ti\u00eau s\u1ed1 1 l\u00e0 ch\u1ecbu oxy h\u00f3a \u1edf nhi\u1ec7t c\u1ef1c cao, 310S l\u00e0 chu\u1ea9n v\u00e0ng.<br \/>\n&#8211; N\u1ebfu c\u1ea7n c\u00e2n b\u1eb1ng chi ph\u00ed \u2013 nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c t\u1edbi ~1000\u00b0C v\u00e0 ch\u1ecbu chu k\u1ef3 nhi\u1ec7t, 309S r\u1ea5t h\u1ee3p l\u00fd.<br \/>\n&#8211; N\u1ebfu l\u00e0 thi\u1ebft b\u1ecb ch\u1ecbu \u00e1p \u1edf 550\u2013750\u00b0C v\u00e0 c\u1ea7n b\u1ec1n r\u00e3o theo code, 304H l\u00e0 m\u00e1c \u0111\u00fang.<br \/>\nLu\u00f4n x\u00e9t \u0111\u1ebfn m\u00f4i tr\u01b0\u1eddng kh\u00ed (oxy h\u00f3a\/kh\u1eed\/l\u01b0u hu\u1ef3nh\/carbur h\u00f3a), chu k\u1ef3 nhi\u1ec7t v\u00e0 y\u00eau c\u1ea7u code. \u0110\u1eebng qu\u00ean r\u1eb1ng 309S\/310S kh\u00f4ng thay th\u1ebf 316L cho m\u00f4i tr\u01b0\u1eddng clorua \u01b0\u1edbt. Tham kh\u1ea3o th\u00eam: Outokumpu Therma 310S\/309S\/304H; ASTM A240\/A312; ASME Section II-D; AZoM\/Atlas Steels datasheets.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn m\u00e1c, quy c\u00e1ch t\u1ed3n kho v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t t\u1ea1i H\u00e0 N\u1ed9i v\u00e0 to\u00e0n qu\u1ed1c? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh: Hotline 0343.417.281 \u2013 Email inoxcongnghiep.cuongthinh@gmail.com.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>B\u1ea3ng so s\u00e1nh th\u1ef1c d\u1ee5ng 310S, 309S, 304H: nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c, ch\u1ed1ng oxy h\u00f3a, b\u1ec1n r\u00e3o, h\u00e0n v\u00e0 gi\u00e1. Ch\u1ecdn \u0111\u00fang m\u00e1c inox ch\u1ecbu nhi\u1ec7t cho l\u00f2, n\u1ed3i h\u01a1i, h\u00f3a d\u1ea7u.<\/p>\n","protected":false},"author":7,"featured_media":1073,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2534","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"acf":[],"_links":{"self":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2534","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/comments?post=2534"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2534\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1073"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2534"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2534"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2534"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}