{"id":2506,"date":"2026-08-29T12:34:07","date_gmt":"2026-08-29T05:34:07","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/"},"modified":"2026-08-29T12:34:07","modified_gmt":"2026-08-29T05:34:07","slug":"vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/","title":{"rendered":"V\u00ec sao c\u00f3 inox h\u00fat nam ch\u00e2m, c\u00f3 lo\u1ea1i kh\u00f4ng? Ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt"},"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;2506&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;V\u00ec sao c\u00f3 inox h\u00fat nam ch\u00e2m, c\u00f3 lo\u1ea1i kh\u00f4ng? Ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt&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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Ban_chat_tu_tinh_cua_thep_khong_gi_tom_tat_60_giay\" >B\u1ea3n ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9: t\u00f3m t\u1eaft 60 gi\u00e2y<\/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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Cac_nhom_inox_va_muc_do_hut_nam_cham\" >C\u00e1c nh\u00f3m inox v\u00e0 m\u1ee9c \u0111\u1ed9 h\u00fat nam ch\u00e2m<\/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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Austenitic_dong_200300_201_301_304304L_316316L%E2%80%A6\" >Austenitic (d\u00f2ng 200\/300: 201, 301, 304\/304L, 316\/316L\u2026)<\/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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Ferritic_dong_400_409_430_439_441_444%E2%80%A6\" >Ferritic (d\u00f2ng 400: 409, 430, 439, 441, 444\u2026)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Martensitic_410_420_431%E2%80%A6\" >Martensitic (410, 420, 431\u2026)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Duplex_2205_2304%E2%80%A6\" >Duplex (2205, 2304\u2026)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Precipitation-hardening_17-4PH630%E2%80%A6\" >Precipitation-hardening (17-4PH\/630\u2026)<\/a><\/li><\/ul><\/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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Vi_sao_cung_mac_van_co_tamong_hut_nam_cham_khac_nhau\" >V\u00ec sao c\u00f9ng m\u00e1c v\u1eabn c\u00f3 t\u1ea5m\/\u1ed1ng h\u00fat nam ch\u00e2m kh\u00e1c nhau?<\/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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Nam_cham_co_phai_la_%E2%80%9Ctest_304%E2%80%9D_hay_%E2%80%9Ctest_hang_xin%E2%80%9D\" >Nam ch\u00e2m c\u00f3 ph\u1ea3i l\u00e0 \u201ctest 304\u201d hay \u201ctest h\u00e0ng x\u1ecbn\u201d?<\/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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Tu_tinh_co_lam_inox_%E2%80%9Cde_gi%E2%80%9D_hon_khong\" >T\u1eeb t\u00ednh c\u00f3 l\u00e0m inox \u201cd\u1ec5 g\u1ec9\u201d h\u01a1n kh\u00f4ng?<\/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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Ung_dung_thuc_te_va_khuyen_nghi_chon_mac_tai_Viet_Nam\" >\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf v\u00e0 khuy\u1ebfn ngh\u1ecb ch\u1ecdn m\u00e1c 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-13\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#7_tinh_huong_%E2%80%9Chut_%E2%80%93_khong_hut%E2%80%9D_de_gap\" >7 t\u00ecnh hu\u1ed1ng \u201ch\u00fat \u2013 kh\u00f4ng h\u00fat\u201d d\u1ec5 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\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Meo_bao_dam_dung_mac_khi_mua_%E2%80%93_lap_dat\" >M\u1eb9o b\u1ea3o \u0111\u1ea3m \u0111\u00fang m\u00e1c khi mua \u2013 l\u1eafp \u0111\u1eb7t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#FAQ_nhanh\" >FAQ nhanh<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Nguon_tham_khao\" >Ngu\u1ed3n tham kh\u1ea3o<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/inoxcuongthinh.com\/vi-sao-co-inox-hut-nam-cham-co-loai-khong-phan-tich-ky-thuat\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/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-ban-chat-tu-tinh-cua-thep-khong-gi-tom-tat-60-giay\">B\u1ea3n ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9: t\u00f3m t\u1eaft 60 gi\u00e2y<\/a><\/li>\n<li><a href=\"#toc-1-cac-nhom-inox-va-muc-do-hut-nam-cham\">C\u00e1c nh\u00f3m inox v\u00e0 m\u1ee9c \u0111\u1ed9 h\u00fat nam ch\u00e2m<\/a><\/li>\n<li><a href=\"#toc-2-vi-sao-cung-mac-van-co-tamong-hut-nam-cham-khac-nh\">V\u00ec sao c\u00f9ng m\u00e1c v\u1eabn c\u00f3 t\u1ea5m\/\u1ed1ng h\u00fat nam ch\u00e2m kh\u00e1c nhau?<\/a><\/li>\n<li><a href=\"#toc-3-nam-cham-co-phai-la-test-304-hay-test-hang-xin\">Nam ch\u00e2m c\u00f3 ph\u1ea3i l\u00e0 \u201ctest 304\u201d hay \u201ctest h\u00e0ng x\u1ecbn\u201d?<\/a><\/li>\n<li><a href=\"#toc-4-tu-tinh-co-lam-inox-de-gi-hon-khong\">T\u1eeb t\u00ednh c\u00f3 l\u00e0m inox \u201cd\u1ec5 g\u1ec9\u201d h\u01a1n kh\u00f4ng?<\/a><\/li>\n<li><a href=\"#toc-5-ung-dung-thuc-te-va-khuyen-nghi-chon-mac-tai-viet-\">\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf v\u00e0 khuy\u1ebfn ngh\u1ecb ch\u1ecdn m\u00e1c t\u1ea1i Vi\u1ec7t Nam<\/a><\/li>\n<li><a href=\"#toc-6-7-tinh-huong-hut-khong-hut-de-gap\">7 t\u00ecnh hu\u1ed1ng \u201ch\u00fat \u2013 kh\u00f4ng h\u00fat\u201d d\u1ec5 g\u1eb7p<\/a><\/li>\n<li><a href=\"#toc-7-meo-bao-dam-dung-mac-khi-mua-lap-dat\">M\u1eb9o b\u1ea3o \u0111\u1ea3m \u0111\u00fang m\u00e1c khi mua \u2013 l\u1eafp \u0111\u1eb7t<\/a><\/li>\n<li><a href=\"#toc-8-faq-nhanh\">FAQ nhanh<\/a><\/li>\n<li><a href=\"#toc-9-nguon-tham-khao\">Ngu\u1ed3n tham kh\u1ea3o<\/a><\/li>\n<li><a href=\"#toc-10-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Inox c\u00f3 lo\u1ea1i h\u00fat nam ch\u00e2m r\u00f5 r\u1ec7t, c\u00f3 lo\u1ea1i l\u1ea1i g\u1ea7n nh\u01b0 kh\u00f4ng h\u00fat. Kh\u00e1c bi\u1ec7t n\u00e0y kh\u00f4ng ph\u1ea3i \u201ch\u00e0ng th\u1eadt \u2013 h\u00e0ng gi\u1ea3\u201d \u0111\u01a1n thu\u1ea7n, m\u00e0 \u0111\u1ebfn t\u1eeb vi c\u1ea5u tr\u00fac (austenit, ferit, mactenxit), th\u00e0nh ph\u1ea7n h\u1ee3p kim (Cr, Ni, Mo, N) v\u00e0 tr\u1ea1ng th\u00e1i gia c\u00f4ng\/nhi\u1ec7t luy\u1ec7n. B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch \u0111\u1ea7y \u0111\u1ee7 c\u01a1 ch\u1ebf t\u1eeb t\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9 v\u00e0 c\u00e1ch \u1ee9ng d\u1ee5ng v\u00e0o ch\u1ecdn m\u00e1c, ki\u1ec3m tra v\u1eadt li\u1ec7u trong s\u1ea3n xu\u1ea5t \u2013 l\u1eafp \u0111\u1eb7t t\u1ea1i Vi\u1ec7t Nam.<\/p>\n<h2 id=\"toc-0-ban-chat-tu-tinh-cua-thep-khong-gi-tom-tat-60-giay\"><span class=\"ez-toc-section\" id=\"Ban_chat_tu_tinh_cua_thep_khong_gi_tom_tat_60_giay\"><\/span>B\u1ea3n ch\u1ea5t t\u1eeb t\u00ednh c\u1ee7a th\u00e9p kh\u00f4ng g\u1ec9: t\u00f3m t\u1eaft 60 gi\u00e2y<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; V\u1eadt li\u1ec7u h\u00fat nam ch\u00e2m m\u1ea1nh l\u00e0 v\u1eadt li\u1ec7u s\u1eaft t\u1eeb (ferromagnetic), c\u00f3 \u0111\u1ed9 t\u1eeb th\u1ea9m t\u01b0\u01a1ng \u0111\u1ed1i \u03bcr cao (\u226b1).<br \/>\n&#8211; V\u1eadt li\u1ec7u g\u1ea7n nh\u01b0 kh\u00f4ng h\u00fat l\u00e0 thu\u1eadn t\u1eeb (paramagnetic), \u03bcr x\u1ea5p x\u1ec9 1 (th\u01b0\u1eddng 1.02\u20131.05 cho th\u00e9p kh\u00f4ng g\u1ec9 austenit \u0111\u00e3 \u1ee7).<br \/>\n&#8211; T\u00ednh t\u1eeb kh\u00f4ng quy\u1ebft \u0111\u1ecbnh tr\u1ef1c ti\u1ebfp kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n; n\u00f3 ph\u1ea3n \u00e1nh t\u1ed5 ch\u1ee9c pha kim lo\u1ea1i b\u00ean trong.<\/p>\n<h2 id=\"toc-1-cac-nhom-inox-va-muc-do-hut-nam-cham\"><span class=\"ez-toc-section\" id=\"Cac_nhom_inox_va_muc_do_hut_nam_cham\"><\/span>C\u00e1c nh\u00f3m inox v\u00e0 m\u1ee9c \u0111\u1ed9 h\u00fat nam ch\u00e2m<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3><span class=\"ez-toc-section\" id=\"Austenitic_dong_200300_201_301_304304L_316316L%E2%80%A6\"><\/span>Austenitic (d\u00f2ng 200\/300: 201, 301, 304\/304L, 316\/316L\u2026)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Tr\u1ea1ng th\u00e1i \u1ee7 dung d\u1ecbch (annealed): h\u1ea7u nh\u01b0 kh\u00f4ng h\u00fat nam ch\u00e2m (thu\u1eadn t\u1eeb r\u1ea5t y\u1ebfu).<br \/>\n&#8211; Sau gia c\u00f4ng ngu\u1ed9i (c\u00e1n ngu\u1ed9i, u\u1ed1n, d\u1eadp, k\u00e9o): c\u00f3 th\u1ec3 h\u00fat nh\u1eb9 \u0111\u1ebfn v\u1eeba do chuy\u1ec3n bi\u1ebfn mactenxit c\u1ea3m \u1ee9ng bi\u1ebfn d\u1ea1ng. M\u00e1c 301 d\u1ec5 chuy\u1ec3n bi\u1ebfn nh\u1ea5t; 304 chuy\u1ec3n bi\u1ebfn \u1edf m\u1ee9c trung b\u00ecnh; 316 \u1ed5n \u0111\u1ecbnh austenit h\u01a1n n\u00ean \u00edt h\u00fat h\u01a1n.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: th\u1ef1c ph\u1ea9m, y t\u1ebf, k\u1ebft c\u1ea5u, b\u1ed3n b\u1ec3, \u1ed1ng c\u00f4ng nghi\u1ec7p.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Ferritic_dong_400_409_430_439_441_444%E2%80%A6\"><\/span>Ferritic (d\u00f2ng 400: 409, 430, 439, 441, 444\u2026)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Lu\u00f4n h\u00fat nam ch\u00e2m r\u00f5 r\u1ec7t (s\u1eaft t\u1eeb).<br \/>\n&#8211; Kh\u00f4ng c\u00f3 niken (ho\u1eb7c r\u1ea5t th\u1ea5p), ch\u1ed1ng \u0103n m\u00f2n k\u00e9m h\u01a1n 304\/316 nh\u01b0ng v\u1eabn t\u1ed1t h\u01a1n th\u00e9p cacbon. 444 c\u00f3 Mo n\u00ean b\u1ec1n r\u1ed7 h\u01a1n 430.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: trang tr\u00ed n\u1ed9i th\u1ea5t, \u1ed1ng x\u1ea3, v\u1ecf thi\u1ebft b\u1ecb, m\u00f4i tr\u01b0\u1eddng kh\u00f4 ho\u1eb7c \u00edt chloride.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Martensitic_410_420_431%E2%80%A6\"><\/span>Martensitic (410, 420, 431\u2026)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; Lu\u00f4n h\u00fat m\u1ea1nh. C\u00f3 th\u1ec3 t\u00f4i \u2013 ram \u0111\u1ea1t \u0111\u1ed9 c\u1ee9ng cao.<br \/>\n&#8211; Ch\u1ed1ng \u0103n m\u00f2n v\u1eeba \u0111\u1ebfn th\u1ea5p (t\u00f9y h\u00e0m l\u01b0\u1ee3ng Cr).<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: dao k\u00e9o, chi ti\u1ebft ch\u1ecbu m\u00e0i m\u00f2n, tr\u1ee5c.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Duplex_2205_2304%E2%80%A6\"><\/span>Duplex (2205, 2304\u2026)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; T\u1ed5 ch\u1ee9c 2 pha: ~50% austenit + ~50% ferit \u2192 lu\u00f4n h\u00fat nam ch\u00e2m \u1edf m\u1ee9c trung b\u00ecnh.<br \/>\n&#8211; \u01afu th\u1ebf c\u01a1 t\u00ednh cao, ch\u1ed1ng n\u1ee9t do ion chloride t\u1ed1t.<br \/>\n&#8211; \u1ee8ng d\u1ee5ng: h\u00f3a ch\u1ea5t, d\u1ea7u kh\u00ed, m\u00f4i tr\u01b0\u1eddng bi\u1ec3n.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Precipitation-hardening_17-4PH630%E2%80%A6\"><\/span>Precipitation-hardening (17-4PH\/630\u2026)<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>&#8211; C\u1ea5u tr\u00fac n\u1ec1n martensit\/ferrit \u2192 h\u00fat nam ch\u00e2m.<br \/>\n&#8211; D\u00f9ng cho chi ti\u1ebft \u0111\u00f2i h\u1ecfi c\u01b0\u1eddng \u0111\u1ed9 r\u1ea5t cao.<\/p>\n<h2 id=\"toc-2-vi-sao-cung-mac-van-co-tamong-hut-nam-cham-khac-nh\"><span class=\"ez-toc-section\" id=\"Vi_sao_cung_mac_van_co_tamong_hut_nam_cham_khac_nhau\"><\/span>V\u00ec sao c\u00f9ng m\u00e1c v\u1eabn c\u00f3 t\u1ea5m\/\u1ed1ng h\u00fat nam ch\u00e2m kh\u00e1c nhau?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Gia c\u00f4ng ngu\u1ed9i: 304 c\u00e1n ngu\u1ed9i s\u00e2u, d\u1eadp\/\u00e9p, u\u1ed1n g\u1ea5p nh\u1ecf R s\u1ebd sinh mactenxit \u2192 \u201ch\u00fat\u201d nam ch\u00e2m r\u00f5 h\u01a1n so v\u1edbi t\u1ea5m\/\u1ed1ng \u0111\u00e3 \u1ee7. M\u00e9p c\u1eaft ch\u1ea5n, \u0111\u1ed9t l\u1ed7, khoan ren c\u0169ng th\u01b0\u1eddng h\u00fat h\u01a1n v\u00f9ng n\u1ec1n.<br \/>\n&#8211; H\u00e0n: m\u1ed1i h\u00e0n inox austenit th\u01b0\u1eddng ch\u1ee7 \u0111\u1ed9ng duy tr\u00ec m\u1ed9t l\u01b0\u1ee3ng ferrit delta (FN kho\u1ea3ng 3\u201310) \u0111\u1ec3 ch\u1ed1ng n\u1ee9t n\u00f3ng \u2192 v\u00f9ng m\u1ed1i h\u00e0n h\u00fat nam ch\u00e2m r\u00f5 r\u1ec7t d\u00f9 v\u1eadt li\u1ec7u n\u1ec1n 304\/316 g\u1ea7n nh\u01b0 kh\u00f4ng h\u00fat.<br \/>\n&#8211; Th\u00e0nh ph\u1ea7n h\u1ee3p kim v\u00e0 \u1ed5n \u0111\u1ecbnh austenit: c\u00f9ng l\u00e0 304 nh\u01b0ng kh\u00e1c nh\u00e0 luy\u1ec7n kim, kh\u00e1c m\u1ee9c N, Ni c\u00f3 th\u1ec3 l\u00e0m austenit \u1ed5n \u0111\u1ecbnh h\u01a1n ho\u1eb7c k\u00e9m h\u01a1n \u2192 \u0111\u1ed9 h\u00fat thay \u0111\u1ed5i.<br \/>\n&#8211; \u0110\u1ed9 d\u00e0y v\u00e0 \u1ee9ng su\u1ea5t d\u01b0: v\u1eadt d\u00e0y, bi\u1ebfn d\u1ea1ng n\u1ed9i th\u1ea5p c\u00f3 th\u1ec3 \u00edt h\u00fat h\u01a1n so v\u1edbi chi ti\u1ebft m\u1ecfng b\u1ecb l\u00e0m c\u1ee9ng bi\u1ebfn d\u1ea1ng.<br \/>\n&#8211; Nhi\u1ec7t luy\u1ec7n: \u1ee7 dung d\u1ecbch \u0111\u00fang quy tr\u00ecnh (1050\u20131100\u00b0C, l\u00e0m ngu\u1ed9i nhanh) s\u1ebd ph\u1ee5c h\u1ed3i austenit, gi\u1ea3m t\u1eeb t\u00ednh so v\u1edbi tr\u1ea1ng th\u00e1i bi\u1ebfn c\u1ee9ng.<\/p>\n<h2 id=\"toc-3-nam-cham-co-phai-la-test-304-hay-test-hang-xin\"><span class=\"ez-toc-section\" id=\"Nam_cham_co_phai_la_%E2%80%9Ctest_304%E2%80%9D_hay_%E2%80%9Ctest_hang_xin%E2%80%9D\"><\/span>Nam ch\u00e2m c\u00f3 ph\u1ea3i l\u00e0 \u201ctest 304\u201d hay \u201ctest h\u00e0ng x\u1ecbn\u201d?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Ng\u1eafn g\u1ecdn: Kh\u00f4ng. Nam ch\u00e2m ch\u1ec9 l\u00e0 ph\u00e9p th\u1eed s\u00e0ng l\u1ecdc s\u01a1 b\u1ed9, KH\u00d4NG d\u00f9ng \u0111\u1ec3 k\u1ebft lu\u1eadn m\u00e1c ho\u1eb7c ch\u1ea5t l\u01b0\u1ee3ng.<br \/>\n&#8211; 201 v\u00e0 304 \u1edf tr\u1ea1ng th\u00e1i \u1ee7 \u0111\u1ec1u g\u1ea7n nh\u01b0 kh\u00f4ng h\u00fat \u2192 kh\u00f4ng th\u1ec3 ph\u00e2n bi\u1ec7t b\u1eb1ng nam ch\u00e2m.<br \/>\n&#8211; 304 sau c\u00e1n ngu\u1ed9i\/h\u00e0n c\u00f3 th\u1ec3 h\u00fat \u2192 kh\u00f4ng th\u1ec3 k\u1ebft lu\u1eadn \u0111\u00f3 l\u00e0 430 hay \u201cinox k\u00e9m\u201d.<br \/>\n&#8211; 316 \u1ed5n \u0111\u1ecbnh austenit h\u01a1n, th\u01b0\u1eddng \u00edt h\u00fat h\u01a1n 304, nh\u01b0ng v\u1eabn c\u00f3 th\u1ec3 h\u00fat nh\u1eb9 \u1edf v\u00f9ng bi\u1ebfn d\u1ea1ng\/h\u00e0n.<\/p>\n<p>C\u00e1ch ki\u1ec3m tra \u0111\u00fang trong x\u01b0\u1edfng:<br \/>\n&#8211; PMI b\u1eb1ng XRF\/OES: x\u00e1c \u0111\u1ecbnh nhanh th\u00e0nh ph\u1ea7n Cr, Ni, Mo, Mn, N (gi\u00e1n ti\u1ebfp) \u0111\u1ec3 ph\u00e2n bi\u1ec7t 201\/304\/316\/430\u2026 Ch\u00ednh x\u00e1c v\u00e0 truy xu\u1ea5t \u0111\u01b0\u1ee3c.<br \/>\n&#8211; Test Mo t\u1ea1i ch\u1ed7 (moly spot): gi\u00fap ph\u00e2n bi\u1ec7t 304 (kh\u00f4ng Mo) v\u00e0 316 (c\u00f3 Mo). C\u1ea7n tu\u00e2n th\u1ee7 an to\u00e0n h\u00f3a ch\u1ea5t.<br \/>\n&#8211; \u0110o \u0111\u1ed9 t\u1eeb th\u1ea9m ho\u1eb7c ferrite s\u1ed1 (d\u1ee5ng c\u1ee5 ferrite scope) \u0111\u1ec3 ki\u1ec3m so\u00e1t ferrit \u1edf m\u1ed1i h\u00e0n austenit.<br \/>\n&#8211; Ki\u1ec3m tra ch\u1ee9ng ch\u1ec9 v\u1eadt li\u1ec7u (MTC, theo ASTM A240\/A276 ho\u1eb7c JIS\/EN t\u01b0\u01a1ng \u0111\u01b0\u01a1ng) v\u00e0 \u0111\u1ed1i chi\u1ebfu l\u00f4 h\u00e0ng.<\/p>\n<h2 id=\"toc-4-tu-tinh-co-lam-inox-de-gi-hon-khong\"><span class=\"ez-toc-section\" id=\"Tu_tinh_co_lam_inox_%E2%80%9Cde_gi%E2%80%9D_hon_khong\"><\/span>T\u1eeb t\u00ednh c\u00f3 l\u00e0m inox \u201cd\u1ec5 g\u1ec9\u201d h\u01a1n kh\u00f4ng?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; B\u1ea3n th\u00e2n t\u1eeb t\u00ednh kh\u00f4ng l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n. Y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh l\u00e0 th\u00e0nh ph\u1ea7n h\u1ee3p kim (\u0111\u1eb7c bi\u1ec7t Cr, Mo, Ni) v\u00e0 tr\u1ea1ng th\u00e1i b\u1ec1 m\u1eb7t.<br \/>\n&#8211; Tuy nhi\u00ean, \u0111i\u1ec1u th\u01b0\u1eddng g\u1eb7p l\u00e0: c\u00e1c m\u00e1c c\u00f3 t\u1eeb t\u00ednh m\u1ea1nh (ferritic\/martensitic) th\u01b0\u1eddng c\u00f3 th\u00e0nh ph\u1ea7n Ni th\u1ea5p\/kh\u00f4ng c\u00f3 Ni, ho\u1eb7c Cr th\u1ea5p h\u01a1n \u2192 ch\u1ed1ng \u0103n m\u00f2n c\u0169ng th\u1ea5p h\u01a1n so v\u1edbi 304\/316. V\u00ec v\u1eady d\u1ec5 b\u1ecb hi\u1ec3u nh\u1ea7m \u201ch\u00fat nam ch\u00e2m l\u00e0 k\u00e9m\u201d.<br \/>\n&#8211; Gia c\u00f4ng ngu\u1ed9i l\u00e0m t\u0103ng \u1ee9ng su\u1ea5t v\u00e0 \u0111\u1ed9 c\u1ee9ng b\u1ec1 m\u1eb7t; n\u1ebfu sau \u0111\u00f3 kh\u00f4ng x\u1eed l\u00fd l\u00e0m s\u1ea1ch\/passivation \u0111\u00fang, v\u00f9ng n\u00e0y c\u00f3 th\u1ec3 \u0103n m\u00f2n k\u1ebd \u2013 nh\u01b0ng nguy\u00ean nh\u00e2n l\u00e0 \u00f4 nhi\u1ec5m s\u1eaft t\u1ef1 do\/b\u1ec1 m\u1eb7t k\u00e9m, kh\u00f4ng ph\u1ea3i v\u00ec \u201cc\u00f3 t\u1eeb t\u00ednh\u201d.<\/p>\n<h2 id=\"toc-5-ung-dung-thuc-te-va-khuyen-nghi-chon-mac-tai-viet-\"><span class=\"ez-toc-section\" id=\"Ung_dung_thuc_te_va_khuyen_nghi_chon_mac_tai_Viet_Nam\"><\/span>\u1ee8ng d\u1ee5ng th\u1ef1c t\u1ebf v\u00e0 khuy\u1ebfn ngh\u1ecb ch\u1ecdn m\u00e1c t\u1ea1i Vi\u1ec7t Nam<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; M\u00f4i tr\u01b0\u1eddng bi\u1ec3n\/ven bi\u1ec3n, b\u1ec3 mu\u1ed1i, h\u00f3a ch\u1ea5t c\u00f3 chloride: \u01b0u ti\u00ean 316\/316L; ho\u1eb7c duplex 2205 cho t\u1ea3i tr\u1ecdng cao.<br \/>\n&#8211; Th\u1ef1c ph\u1ea9m, n\u01b0\u1edbc s\u1ea1ch, b\u1ed3n b\u1ec3 trong nh\u00e0 x\u01b0\u1edfng: 304\/304L; ki\u1ec3m so\u00e1t h\u00e0n v\u00e0 pickling\/passivation.<br \/>\n&#8211; N\u1ed9i th\u1ea5t kh\u00f4, trang tr\u00ed, t\u1ee7 b\u1ebfp trong nh\u00e0: 430 ho\u1eb7c 201 (c\u00e2n nh\u1eafc \u0111i\u1ec1u ki\u1ec7n \u1ea9m, h\u01a1i mu\u1ed1i).<br \/>\n&#8211; Dao c\u1ee5, chi ti\u1ebft ch\u1ecbu m\u00e0i m\u00f2n: 420\/410 (l\u01b0u \u00fd ch\u1ed1ng g\u1ec9 h\u1ea1n ch\u1ebf).<br \/>\n&#8211; \u1ed0ng trang tr\u00ed, lan can: 304 cho ngo\u00e0i tr\u1eddi \u0111\u00f4 th\u1ecb; 201\/430 cho trong nh\u00e0 kh\u00f4 r\u00e1o; khu v\u1ef1c ven bi\u1ec3n n\u00ean d\u00f9ng 316.<\/p>\n<h2 id=\"toc-6-7-tinh-huong-hut-khong-hut-de-gap\"><span class=\"ez-toc-section\" id=\"7_tinh_huong_%E2%80%9Chut_%E2%80%93_khong_hut%E2%80%9D_de_gap\"><\/span>7 t\u00ecnh hu\u1ed1ng \u201ch\u00fat \u2013 kh\u00f4ng h\u00fat\u201d d\u1ec5 g\u1eb7p<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; \u1ed0ng trang tr\u00ed 201 ho\u1eb7c 304 m\u1edbi, b\u1ec1 m\u1eb7t BA\/HL: g\u1ea7n nh\u01b0 kh\u00f4ng h\u00fat.<br \/>\n&#8211; Thanh la\/g\u00f3c 304 c\u00e1n ngu\u1ed9i m\u1ea1nh: h\u00fat nh\u1eb9 \u0111\u1ebfn v\u1eeba.<br \/>\n&#8211; M\u1ed1i h\u00e0n TIG\/MIG tr\u00ean 304: \u0111\u01b0\u1eddng h\u00e0n h\u00fat r\u00f5, v\u1eadt li\u1ec7u n\u1ec1n kh\u00f4ng ho\u1eb7c h\u00fat r\u1ea5t nh\u1eb9.<br \/>\n&#8211; 316 u\u1ed1n g\u1ea5p m\u00e9p nh\u1ecf: c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n h\u00fat nh\u1eb9 t\u1ea1i v\u00f9ng u\u1ed1n.<br \/>\n&#8211; T\u1ea5m 430\/439: h\u00fat m\u1ea1nh to\u00e0n b\u1ed9 b\u1ec1 m\u1eb7t.<br \/>\n&#8211; Dao 420 \u0111\u00e3 t\u00f4i: h\u00fat m\u1ea1nh.<br \/>\n&#8211; \u1ed0ng duplex 2205 cho n\u01b0\u1edbc bi\u1ec3n: h\u00fat v\u1eeba, \u0111\u1ed3ng th\u1eddi cho \u0111\u1ed9 b\u1ec1n cao.<\/p>\n<h2 id=\"toc-7-meo-bao-dam-dung-mac-khi-mua-lap-dat\"><span class=\"ez-toc-section\" id=\"Meo_bao_dam_dung_mac_khi_mua_%E2%80%93_lap_dat\"><\/span>M\u1eb9o b\u1ea3o \u0111\u1ea3m \u0111\u00fang m\u00e1c khi mua \u2013 l\u1eafp \u0111\u1eb7t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Y\u00eau c\u1ea7u MTC theo ASTM\/JIS\/EN cho t\u1eebng l\u00f4; ki\u1ec3m tra nhi\u1ec7t luy\u1ec7n \u0111\u1ed1i v\u1edbi 304L\/316L d\u00f9ng cho h\u00e0n.<br \/>\n&#8211; Ki\u1ec3m tra PMI ng\u1eabu nhi\u00ean \u0111\u1ea7u v\u00e0o, \u0111\u1eb7c bi\u1ec7t v\u1edbi v\u1eadt t\u01b0 c\u00f3 nguy c\u01a1 thay th\u1ebf 201 \u2194 304.<br \/>\n&#8211; Ghi r\u00f5 y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt: m\u00e1c, b\u1ec1 m\u1eb7t (2B\/BA\/HL\/No.4), tr\u1ea1ng th\u00e1i (\u1ee7\/\u0111\u1ed9 c\u1ee9ng), ti\u00eau chu\u1ea9n (ASTM A240\/A312\u2026).<br \/>\n&#8211; Sau gia c\u00f4ng\/h\u00e0n: t\u1ea9y g\u1ec9 \u2013 th\u1ee5 \u0111\u1ed9ng h\u00f3a (pickling &#038; passivation); l\u00e0m s\u1ea1ch s\u1eaft t\u1ef1 do \u0111\u1ec3 tr\u00e1nh g\u1ec9 n\u00e2u gi\u1ea3.<br \/>\n&#8211; Kh\u00f4ng d\u00f9ng \u201ctest nam ch\u00e2m\u201d l\u00e0m ti\u00eau ch\u00ed ch\u1ea5p nh\u1eadn\/lo\u1ea1i b\u1ecf v\u1eadt t\u01b0.<\/p>\n<h2 id=\"toc-8-faq-nhanh\"><span class=\"ez-toc-section\" id=\"FAQ_nhanh\"><\/span>FAQ nhanh<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Nam ch\u00e2m c\u00e0ng h\u00fat th\u00ec inox c\u00e0ng k\u00e9m? Sai. \u0110\u1ed9 h\u00fat ph\u1ea3n \u00e1nh t\u1ed5 ch\u1ee9c pha. Ch\u1ed1ng \u0103n m\u00f2n ph\u1ee5 thu\u1ed9c Cr, Mo, Ni v\u00e0 b\u1ec1 m\u1eb7t.<br \/>\n&#8211; C\u00f3 kh\u1eed \u0111\u01b0\u1ee3c t\u00ednh h\u00fat c\u1ee7a 304 \u0111\u00e3 b\u1ecb \u201ch\u00fat\u201d kh\u00f4ng? C\u00f3 th\u1ec3 \u1ee7 dung d\u1ecbch 1050\u20131100\u00b0C r\u1ed3i l\u00e0m ngu\u1ed9i nhanh \u0111\u1ec3 ph\u1ee5c h\u1ed3i austenit. Kh\u1eed t\u1eeb b\u1eb1ng coil ch\u1ec9 gi\u1ea3m t\u1eeb d\u01b0, kh\u00f4ng \u0111\u1ed5i vi c\u1ea5u tr\u00fac.<br \/>\n&#8211; C\u1eaft laser\/plasma c\u00f3 l\u00e0m inox \u201ch\u00fat\u201d h\u01a1n kh\u00f4ng? V\u00f9ng m\u00e9p ch\u1ecbu bi\u1ebfn d\u1ea1ng\/nhi\u1ec7t c\u00f3 th\u1ec3 thay \u0111\u1ed5i t\u1ed5 ch\u1ee9c c\u1ee5c b\u1ed9; ri\u00eang shearing\/d\u1eadp l\u00e0m t\u0103ng h\u00fat r\u00f5 h\u01a1n do bi\u1ebfn d\u1ea1ng ngu\u1ed9i.<\/p>\n<h2 id=\"toc-9-nguon-tham-khao\"><span class=\"ez-toc-section\" id=\"Nguon_tham_khao\"><\/span>Ngu\u1ed3n tham kh\u1ea3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>&#8211; Nickel Institute \u2013 Magnetic properties of stainless steels: https:\/\/nickelinstitute.org<br \/>\n&#8211; Outokumpu \u2013 Handbook of Stainless Steel: https:\/\/www.outokumpu.com<br \/>\n&#8211; British Stainless Steel Association (BSSA) \u2013 Are stainless steels magnetic?: https:\/\/bssa.org.uk<br \/>\n&#8211; ASSDA Technical Note \u2013 Why are my stainless steels magnetic?: https:\/\/www.assda.asn.au<br \/>\n&#8211; ASTM A240\/A312 ti\u00eau chu\u1ea9n v\u1eadt li\u1ec7u t\u1ea5m\/\u1ed1ng inox: https:\/\/www.astm.org<\/p>\n<h2 id=\"toc-10-ket-luan\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span>K\u1ebft lu\u1eadn<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Inox h\u00fat hay kh\u00f4ng h\u00fat nam ch\u00e2m ch\u1ee7 y\u1ebfu do vi c\u1ea5u tr\u00fac: austenit g\u1ea7n nh\u01b0 kh\u00f4ng h\u00fat; ferrit\/mactenxit h\u00fat m\u1ea1nh; duplex h\u00fat trung b\u00ecnh. C\u00f9ng m\u1ed9t m\u00e1c (nh\u01b0 304) v\u1eabn c\u00f3 th\u1ec3 \u201ch\u00fat\u201d c\u1ee5c b\u1ed9 sau gia c\u00f4ng ngu\u1ed9i ho\u1eb7c t\u1ea1i m\u1ed1i h\u00e0n. V\u00ec v\u1eady, nam ch\u00e2m ch\u1ec9 l\u00e0 ph\u00e9p th\u1eed s\u01a1 b\u1ed9, kh\u00f4ng d\u00f9ng \u0111\u1ec3 nh\u1eadn d\u1ea1ng m\u00e1c hay \u0111\u00e1nh gi\u00e1 ch\u1ea5t l\u01b0\u1ee3ng. \u0110\u1ec3 ch\u1ecdn \u0111\u00fang v\u1eadt li\u1ec7u v\u00e0 tr\u00e1nh r\u1ee7i ro \u0103n m\u00f2n\/chi ph\u00ed v\u00f2ng \u0111\u1eddi, h\u00e3y x\u00e1c \u0111\u1ecbnh y\u00eau c\u1ea7u m\u00f4i tr\u01b0\u1eddng, ch\u1ecdn m\u00e1c ph\u00f9 h\u1ee3p (304\/316\/430\/duplex\u2026), ki\u1ec3m tra PMI v\u00e0 x\u1eed l\u00fd b\u1ec1 m\u1eb7t \u0111\u00fang quy tr\u00ecnh.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn m\u00e1c, ki\u1ec3m tra PMI v\u00e0 b\u00e1o gi\u00e1 v\u1eadt t\u01b0 inox t\u1ea1i H\u00e0 N\u1ed9i?<br \/>\nLi\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n chuy\u00ean s\u00e2u v\u00e0 gi\u00e1 t\u1ed1t nh\u1ea5t.<br \/>\nHotline: 0343.417.281<br \/>\nEmail: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>V\u00ec sao c\u00f3 inox h\u00fat nam ch\u00e2m, c\u00f3 lo\u1ea1i kh\u00f4ng? Do vi c\u1ea5u tr\u00fac, th\u00e0nh ph\u1ea7n v\u00e0 gia c\u00f4ng. Hi\u1ec3u 200\/300\/400, t\u00e1c \u0111\u1ed9ng h\u00e0n, v\u00e0 c\u00e1ch ki\u1ec3m tra ch\u00ednh x\u00e1c.<\/p>\n","protected":false},"author":7,"featured_media":1029,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-2506","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\/2506","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=2506"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/2506\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1029"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=2506"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=2506"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=2506"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}