{"id":1893,"date":"2026-04-12T00:34:01","date_gmt":"2026-04-11T17:34:01","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/bang-quy-doi-tuong-duong-mac-inox-giua-astm-jis-va-din-en\/"},"modified":"2026-04-12T00:34:01","modified_gmt":"2026-04-11T17:34:01","slug":"bang-quy-doi-tuong-duong-mac-inox-giua-astm-jis-va-din-en","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/bang-quy-doi-tuong-duong-mac-inox-giua-astm-jis-va-din-en\/","title":{"rendered":"B\u1ea3ng quy \u0111\u1ed5i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng m\u00e1c inox gi\u1eefa ASTM, JIS v\u00e0 DIN\/EN"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-nguyen-tac-quy-doi-va-cach-doc-ky-hieu\">Nguy\u00ean t\u1eafc quy \u0111\u1ed5i v\u00e0 c\u00e1ch \u0111\u1ecdc k\u00fd hi\u1ec7u<\/a><\/li>\n<li><a href=\"#toc-1-bang-quy-doi-tuong-duong-theo-nhom-thep-khong-gi\">B\u1ea3ng quy \u0111\u1ed5i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng theo nh\u00f3m th\u00e9p kh\u00f4ng g\u1ec9<\/a><\/li>\n<li><a href=\"#toc-2-khac-biet-tinh-te-co-the-anh-huong-den-hieu-nang\">Kh\u00e1c bi\u1ec7t tinh t\u1ebf c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng<\/a><\/li>\n<li><a href=\"#toc-3-cach-chon-dung-tuong-duong-theo-ung-dung-va-tieu-c\">C\u00e1ch ch\u1ecdn \u0111\u00fang \u201ct\u01b0\u01a1ng \u0111\u01b0\u01a1ng\u201d theo \u1ee9ng d\u1ee5ng v\u00e0 ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m<\/a><\/li>\n<li><a href=\"#toc-4-sai-lam-thuong-gap-khi-quy-doi-va-cach-tranh\">Sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi quy \u0111\u1ed5i v\u00e0 c\u00e1ch tr\u00e1nh<\/a><\/li>\n<li><a href=\"#toc-5-vi-du-thuc-te-quy-doi-theo-ban-ve\">V\u00ed d\u1ee5 th\u1ef1c t\u1ebf quy \u0111\u1ed5i theo b\u1ea3n v\u1ebd<\/a><\/li>\n<li><a href=\"#toc-6-goi-y-mua-hang-va-kiem-soat-chat-luong\">G\u1ee3i \u00fd mua h\u00e0ng v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/a><\/li>\n<li><a href=\"#toc-7-nguon-tham-khao-va-tai-lieu-chuan\">Ngu\u1ed3n tham kh\u1ea3o v\u00e0 t\u00e0i li\u1ec7u chu\u1ea9n<\/a><\/li>\n<li><a href=\"#toc-8-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>Trong th\u1ef1c t\u1ebf thi\u1ebft k\u1ebf, mua h\u00e0ng v\u00e0 thi c\u00f4ng, c\u00f9ng m\u1ed9t \u201cm\u00e1c inox\u201d c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c g\u1ecdi theo nhi\u1ec1u chu\u1ea9n kh\u00e1c nhau: ASTM\/AISI (k\u00e8m UNS), JIS (SUS), hay DIN\/EN (s\u1ed1 v\u1eadt li\u1ec7u 1.xxx). B\u00e0i vi\u1ebft n\u00e0y t\u1ed5ng h\u1ee3p b\u1ea3ng quy \u0111\u1ed5i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng ch\u00ednh x\u00e1c, c\u00f3 gi\u1ea3i th\u00edch c\u00e1ch \u0111\u1ecdc k\u00fd hi\u1ec7u v\u00e0 c\u00e1c l\u01b0u \u00fd k\u1ef9 thu\u1eadt \u0111\u1ec3 b\u1ea1n ch\u1ecdn \u0111\u00fang v\u1eadt li\u1ec7u. Ch\u1ee7 \u0111\u1ec1 n\u00e0y l\u00e0 m\u1ea3nh gh\u00e9p quan tr\u1ecdng trong h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n v\u00e0 ch\u1ee9ng nh\u1eadn ch\u1ea5t l\u01b0\u1ee3ng inox (ASTM, JIS, CO\/CQ), nh\u01b0ng n\u1ed9i dung d\u01b0\u1edbi \u0111\u00e2y \u0111\u1ee9ng \u0111\u1ed9c l\u1eadp, t\u1eadp trung v\u00e0o quy \u0111\u1ed5i m\u00e1c.<\/p>\n<h2 id=\"toc-0-nguyen-tac-quy-doi-va-cach-doc-ky-hieu\">Nguy\u00ean t\u1eafc quy \u0111\u1ed5i v\u00e0 c\u00e1ch \u0111\u1ecdc k\u00fd hi\u1ec7u<\/h2>\n<p>&#8211; ASTM\/AISI v\u00e0 UNS:<br \/>\n  &#8211; AISI d\u00f9ng c\u00e1c s\u1ed1 quen thu\u1ed9c trong th\u1ecb tr\u01b0\u1eddng (304, 316, 430\u2026). H\u1ec7 th\u1ed1ng UNS (Unified Numbering System) d\u00f9ng m\u00e3 b\u1eaft \u0111\u1ea7u b\u1eb1ng ch\u1eef S\/N (v\u00ed d\u1ee5 S30400).<br \/>\n  &#8211; ASTM kh\u00f4ng \u201c\u0111\u1ecbnh danh m\u00e1c\u201d m\u00e0 \u0111\u01b0a ra ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m c\u00f3 y\u00eau c\u1ea7u h\u00f3a h\u1ecdc\/c\u01a1 t\u00ednh cho t\u1eebng d\u1ea1ng (v\u00ed d\u1ee5 ASTM A240 cho t\u1ea5m\/l\u00e1, ASTM A276 cho thanh, ASTM A312 cho \u1ed1ng h\u00e0n\/\u0111\u00fac).<br \/>\n&#8211; JIS (Nh\u1eadt B\u1ea3n):<br \/>\n  &#8211; K\u00fd hi\u1ec7u \u201cSUSxxx\u201d theo JIS G4303 (thanh), JIS G4304 (t\u1ea5m c\u00e1n n\u00f3ng), JIS G4305 (t\u1ea5m\/l\u00e1 c\u00e1n ngu\u1ed9i). H\u1eadu t\u1ed1 L (Low C), H (High C), J1\/J2 (bi\u1ebfn th\u1ec3 420).<br \/>\n&#8211; DIN\/EN (ch\u00e2u \u00c2u):<br \/>\n  &#8211; DIN l\u1ecbch s\u1eed \u0111\u00e3 \u0111\u01b0\u1ee3c thay b\u1eb1ng EN 10088. Hai c\u00e1ch ghi th\u00f4ng d\u1ee5ng:<br \/>\n    &#8211; S\u1ed1 v\u1eadt li\u1ec7u (Werkstoff-Nr.) d\u1ea1ng 1.xxxx (v\u00ed d\u1ee5 1.4301).<br \/>\n    &#8211; M\u00f4 t\u1ea3 h\u00f3a h\u1ecdc X\u2026Cr\u2026Ni\u2026Mo\u2026 (v\u00ed d\u1ee5 X5CrNi18-10).<br \/>\n&#8211; Quy \u0111\u1ed5i \u201ct\u01b0\u01a1ng \u0111\u01b0\u01a1ng\u201d d\u1ef1a tr\u00ean:<br \/>\n  &#8211; Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc cho ph\u00e9p trong ti\u00eau chu\u1ea9n (Cr, Ni, Mo, C, N\u2026).<br \/>\n  &#8211; Y\u00eau c\u1ea7u c\u01a1 t\u00ednh t\u1ed1i thi\u1ec3u theo d\u1ea1ng s\u1ea3n ph\u1ea9m\/\u0111i\u1ec1u ki\u1ec7n x\u1eed l\u00fd.<br \/>\n  &#8211; L\u01b0u \u00fd: kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u201c\u0111\u1ed3ng nh\u1ea5t tuy\u1ec7t \u0111\u1ed1i\u201d \u2014 m\u1ed9t s\u1ed1 m\u00e1c ch\u1ec9 \u201cg\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng\u201d do d\u1ea3i th\u00e0nh ph\u1ea7n kh\u00e1c nhau gi\u1eefa ti\u00eau chu\u1ea9n.<\/p>\n<h2 id=\"toc-1-bang-quy-doi-tuong-duong-theo-nhom-thep-khong-gi\">B\u1ea3ng quy \u0111\u1ed5i t\u01b0\u01a1ng \u0111\u01b0\u01a1ng theo nh\u00f3m th\u00e9p kh\u00f4ng g\u1ec9<\/h2>\n<p>G\u1ee3i \u00fd \u0111\u1ecdc nhanh: m\u1ed7i d\u00f2ng n\u00eau ASTM\/AISI (k\u00e8m UNS) \u2013 JIS (SUS) \u2013 DIN\/EN (W.-Nr. v\u00e0\/ho\u1eb7c \u0111\u1ecbnh danh t\u01b0\u01a1ng \u1ee9ng). D\u1ea5u \u201c(g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng)\u201d ch\u1ec9 c\u00e1c m\u00e1c c\u00f3 kh\u00e1c bi\u1ec7t nh\u1ecf v\u1ec1 d\u1ea3i th\u00e0nh ph\u1ea7n gi\u1eefa chu\u1ea9n.<\/p>\n<h3>Austenitic (Cr-Ni\/Mo, kh\u00f4ng nhi\u1ec5m t\u1eeb, d\u00f9ng r\u1ed9ng r\u00e3i)<\/h3>\n<p>&#8211; 201 (UNS S20100) \u2013 SUS201 \u2013 EN 1.4372 (g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng, h\u1ec7 Cr-Mn-N)<br \/>\n&#8211; 202 (UNS S20200) \u2013 SUS202 \u2013 EN 1.4373 (g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng)<br \/>\n&#8211; 301 (UNS S30100) \u2013 SUS301 \u2013 EN 1.4310<br \/>\n&#8211; 304 (UNS S30400) \u2013 SUS304 \u2013 EN 1.4301 (X5CrNi18-10)<br \/>\n&#8211; 304L (UNS S30403) \u2013 SUS304L \u2013 EN 1.4307 (X2CrNi18-9)<br \/>\n&#8211; 304H (UNS S30409) \u2013 SUS304H \u2013 EN 1.4948<br \/>\n&#8211; 309 (UNS S30900) \u2013 SUS309 \u2013 EN 1.4828<br \/>\n&#8211; 309S (UNS S30908) \u2013 SUS309S \u2013 EN 1.4833 (g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng)<br \/>\n&#8211; 310 (UNS S31000) \u2013 SUS310 \u2013 EN 1.4841<br \/>\n&#8211; 310S (UNS S31008) \u2013 SUS310S \u2013 EN 1.4845<br \/>\n&#8211; 316 (UNS S31600) \u2013 SUS316 \u2013 EN 1.4401 (ho\u1eb7c 1.4436 v\u1edbi Mo cao h\u01a1n)<br \/>\n&#8211; 316L (UNS S31603) \u2013 SUS316L \u2013 EN 1.4404 (ho\u1eb7c 1.4435 v\u1edbi Mo cao h\u01a1n)<br \/>\n&#8211; 316Ti (UNS S31635) \u2013 SUS316Ti \u2013 EN 1.4571 (\u1ed5n \u0111\u1ecbnh Ti)<br \/>\n&#8211; 317L (UNS S31703) \u2013 SUS317L \u2013 EN 1.4438<br \/>\n&#8211; 321 (UNS S32100) \u2013 SUS321 \u2013 EN 1.4541 (\u1ed5n \u0111\u1ecbnh Ti)<br \/>\n&#8211; 347 (UNS S34700) \u2013 SUS347 \u2013 EN 1.4550 (\u1ed5n \u0111\u1ecbnh Nb\/Ta)<br \/>\n&#8211; 904L (UNS N08904) \u2013 SUS904L \u2013 EN 1.4539 (Si\u00eau austenitic, Ni cao)<\/p>\n<h3>Ferritic (Cr, \u00edt Ni, t\u1eeb t\u00ednh nh\u1eb9, gi\u00e3n n\u1edf\/chi ph\u00ed th\u1ea5p)<\/h3>\n<p>&#8211; 409 (UNS S40900) \u2013 SUS409 \u2013 EN 1.4512 (th\u01b0\u1eddng \u1ed5n \u0111\u1ecbnh Ti)<br \/>\n&#8211; 410S (UNS S41008) \u2013 SUS410S \u2013 EN 1.4000 (th\u1ea5p C, ferritic)<br \/>\n&#8211; 430 (UNS S43000) \u2013 SUS430 \u2013 EN 1.4016 (X6Cr17)<br \/>\n&#8211; 434 (UNS S43400) \u2013 SUS434 \u2013 EN 1.4113 (Mo t\u0103ng kh\u00e1ng r\u1ed7)<br \/>\n&#8211; 436 (UNS S43600) \u2013 SUS436L \u2013 EN 1.4513<br \/>\n&#8211; 439 (UNS S43035) \u2013 SUS439 \u2013 EN 1.4510 (X3CrTi17)<br \/>\n&#8211; 441 (UNS S43932\/S44100) \u2013 SUS441 \u2013 EN 1.4509 (X2CrTiNb18)<br \/>\n&#8211; 444 (UNS S44400) \u2013 SUS444 \u2013 EN 1.4521 (X2CrMoTi18-2)<\/p>\n<h3>Martensitic (c\u00f3 th\u1ec3 t\u00f4i c\u1ee9ng, \u0111\u1ed9 b\u1ec1n\/\u0111\u1ed9 c\u1ee9ng cao)<\/h3>\n<p>&#8211; 410 (UNS S41000) \u2013 SUS410 \u2013 EN 1.4006 (X12Cr13)<br \/>\n&#8211; 420 (UNS S42000) \u2013 SUS420J1\/J2 \u2013 EN 1.4021\/1.4028 (t\u00f9y C)<br \/>\n&#8211; 431 (UNS S43100) \u2013 SUS431 \u2013 EN 1.4057 (X17CrNi16-2)<br \/>\n&#8211; 440A (UNS S44002) \u2013 SUS440A \u2013 EN 1.4109<br \/>\n&#8211; 440B (UNS S44003) \u2013 SUS440B \u2013 EN 1.4112<br \/>\n&#8211; 440C (UNS S44004) \u2013 SUS440C \u2013 EN 1.4125<\/p>\n<h3>Duplex\/Super Duplex (hai pha ferrite\u2013austenite, b\u1ec1n pitting\/crevice)<\/h3>\n<p>&#8211; 2304 (UNS S32304) \u2013 SUS2304 \u2013 EN 1.4362<br \/>\n&#8211; 2205 (UNS S32205\/S31803) \u2013 SUS329J3L \u2013 EN 1.4462 (X2CrNiMoN22-5-3)<br \/>\n&#8211; 2507 (UNS S32750) \u2013 SUS329J4L (th\u01b0\u01a1ng ph\u1ea9m) \u2013 EN 1.4410 (X2CrNiMoN25-7-4)<br \/>\n&#8211; Zeron 100 (UNS S32760) \u2013 (kh\u00f4ng c\u00f3 SUS ch\u00ednh th\u1ee9c; \u0111\u00f4i khi th\u01b0\u01a1ng ph\u1ea9m 329J4L) \u2013 EN 1.4501<\/p>\n<h3>K\u1ebft t\u1ee7a h\u00f3a b\u1ec1n (PH stainless)<\/h3>\n<p>&#8211; 17-4PH (AISI 630, UNS S17400) \u2013 SUS630 \u2013 EN 1.4542 (X5CrNiCuNb16-4)<br \/>\n&#8211; 17-7PH (UNS S17700) \u2013 SUS631 \u2013 EN 1.4568 (d\u1ea1ng l\u00f2 xo)<br \/>\n&#8211; 15-5PH (UNS S15500) \u2013 (kh\u00f4ng c\u00f3 SUS chu\u1ea9n) \u2013 EN 1.4545 (g\u1ea7n t\u01b0\u01a1ng \u0111\u01b0\u01a1ng; theo AMS\/ASTM)<\/p>\n<p>L\u01b0u \u00fd quan tr\u1ecdng:<br \/>\n&#8211; DIN ng\u00e0y nay t\u01b0\u01a1ng \u1ee9ng b\u1ed9 EN 10088; trong th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam v\u1eabn quen g\u1ecdi \u201cDIN\u201d cho s\u1ed1 v\u1eadt li\u1ec7u 1.xxxx.<br \/>\n&#8211; M\u1ed9t s\u1ed1 m\u00e1c JIS kh\u00f4ng t\u1ed3n t\u1ea1i \u0111\u1ea7y \u0111\u1ee7 cho m\u1ecdi bi\u1ebfn th\u1ec3 ch\u00e2u \u00c2u\/M\u1ef9; khi \u0111\u00f3 \u201ct\u01b0\u01a1ng \u0111\u01b0\u01a1ng g\u1ea7n nh\u1ea5t\u201d d\u1ef1a tr\u00ean d\u1ea3i h\u00f3a h\u1ecdc\/c\u01a1 t\u00ednh g\u1ea7n nh\u1ea5t.<\/p>\n<h2 id=\"toc-2-khac-biet-tinh-te-co-the-anh-huong-den-hieu-nang\">Kh\u00e1c bi\u1ec7t tinh t\u1ebf c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u n\u0103ng<\/h2>\n<p>&#8211; 316\/316L (EN 1.4401\/1.4404) so v\u1edbi c\u00e1c bi\u1ebfn th\u1ec3 1.4435\/1.4436:<br \/>\n  &#8211; 1.4435\/1.4436 th\u01b0\u1eddng c\u00f3 Mo cao h\u01a1n (\u22482.5\u20133.0%) so v\u1edbi 1.4401\/1.4404 (\u22482.0\u20132.5%), t\u0103ng kh\u00e1ng r\u1ed7 (PREN cao h\u01a1n). N\u1ebfu b\u1ea3n v\u1ebd ghi \u201c316L 1.4435\u201d, kh\u00f4ng n\u00ean thay b\u1eb1ng \u201c1.4404\u201d khi m\u00f4i tr\u01b0\u1eddng c\u00f3 chloride cao.<br \/>\n&#8211; 321 (\u1ed5n \u0111\u1ecbnh Ti) vs 347 (\u1ed5n \u0111\u1ecbnh Nb\/Ta):<br \/>\n  &#8211; C\u00f9ng m\u1ee5c ti\u00eau ch\u1ed1ng nh\u1ea1y c\u1ea3m do h\u00e0n \u1edf nhi\u1ec7t \u0111\u1ed9 450\u2013850\u00b0C, nh\u01b0ng 347 b\u1ec1n creep t\u1ed1t h\u01a1n cho nhi\u1ec7t cao k\u00e9o d\u00e0i; 321 ph\u1ed5 bi\u1ebfn h\u01a1n cho \u1ed1ng x\u1ea3, trao \u0111\u1ed5i nhi\u1ec7t.<br \/>\n&#8211; 304H vs 304\/304L:<br \/>\n  &#8211; 304H c\u00f3 C cao h\u01a1n \u0111\u1ec3 n\u00e2ng creep strength \u1edf nhi\u1ec7t \u0111\u1ed9 cao; kh\u00f4ng n\u00ean thay th\u1ebf b\u1eb1ng 304L trong c\u00e1c h\u1ec7 th\u1ed1ng \u00e1p l\u1ef1c nhi\u1ec7t.<br \/>\n&#8211; 420 (J1\/J2) v\u00e0 lo\u1ea1t 440:<br \/>\n  &#8211; Kh\u00e1c nhau ch\u1ee7 y\u1ebfu \u1edf h\u00e0m l\u01b0\u1ee3ng C, quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 c\u1ee9ng sau t\u00f4i. Ch\u1ecdn sai c\u00f3 th\u1ec3 kh\u00f4ng \u0111\u1ea1t \u0111\u1ed9 c\u1ee9ng y\u00eau c\u1ea7u.<\/p>\n<h2 id=\"toc-3-cach-chon-dung-tuong-duong-theo-ung-dung-va-tieu-c\">C\u00e1ch ch\u1ecdn \u0111\u00fang \u201ct\u01b0\u01a1ng \u0111\u01b0\u01a1ng\u201d theo \u1ee9ng d\u1ee5ng v\u00e0 ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m<\/h2>\n<p>&#8211; X\u00e1c \u0111\u1ecbnh m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c:<br \/>\n  &#8211; Chloride cao, n\u01b0\u1edbc bi\u1ec3n: \u01b0u ti\u00ean 316L (1.4435) ho\u1eb7c duplex 2205 (1.4462); n\u01b0\u1edbc bi\u1ec3n \u0111\u1eadm \u0111\u1eb7c\/\u1ea5m ch\u1ecdn 2507 (1.4410) hay 904L (1.4539).<br \/>\n  &#8211; Nhi\u1ec7t cao: 321\/347, 309S\/310S theo d\u1ea3i nhi\u1ec7t; \u1ee9ng d\u1ee5ng c\u1ea5u ki\u1ec7n ch\u1ecbu creep c\u00e2n nh\u1eafc 304H\/316H\/321H.<br \/>\n&#8211; Kh\u1edbp ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m:<br \/>\n  &#8211; T\u1ea5m\/l\u00e1: ASTM A240 ho\u1eb7c EN 10088-2; JIS G4304\/G4305.<br \/>\n  &#8211; Thanh: ASTM A276\/A479; JIS G4303; EN 10088-3.<br \/>\n  &#8211; \u1ed0ng: ASTM A312 (\u1ed1ng h\u00e0n\/\u0111\u00fac austenitic), ASTM A790 (\u1ed1ng duplex), JIS G3448\/G3459, EN 10216\/10217-7.<br \/>\n&#8211; Ki\u1ec3m tra ch\u1ee9ng t\u1eeb:<br \/>\n  &#8211; Y\u00eau c\u1ea7u MTC (Mill Test Certificate) n\u00eau r\u00f5 m\u00e1c + ti\u00eau chu\u1ea9n (v\u00ed d\u1ee5: 1.4404 theo EN 10088-2, ho\u1eb7c 316L theo ASTM A240), th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc, c\u01a1 t\u00ednh, nhi\u1ec7t luy\u1ec7n, k\u1ebft qu\u1ea3 th\u1eed.<br \/>\n&#8211; Khi thay th\u1ebf:<br \/>\n  &#8211; N\u1ebfu b\u1ea3n v\u1ebd ghi \u201cSUS316L (JIS G4304)\u201d, thay b\u1eb1ng \u201cEN 1.4404 (EN 10088-2)\u201d ho\u1eb7c \u201cASTM A240 316L\u201d th\u01b0\u1eddng ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c, nh\u01b0ng c\u1ea7n ch\u1ee7 \u0111\u1ea7u t\u01b0 ph\u00ea duy\u1ec7t v\u00e0 ch\u1ee9ng minh t\u00ednh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng (so s\u00e1nh d\u1ea3i h\u00f3a h\u1ecdc\/c\u01a1 t\u00ednh).<br \/>\n  &#8211; V\u1edbi m\u00e1c c\u00f3 nhi\u1ec1u bi\u1ebfn th\u1ec3 (316L \u2013 1.4404 vs 1.4435), ph\u1ea3i \u0111\u1ed1i chi\u1ebfu y\u00eau c\u1ea7u kh\u00e1ng \u0103n m\u00f2n (pitting\/crevice) ho\u1eb7c ch\u1ee9ng ch\u1ec9 th\u1eed nghi\u1ec7m ASTM G48, CPT\/CCT n\u1ebfu c\u00f3.<\/p>\n<h2 id=\"toc-4-sai-lam-thuong-gap-khi-quy-doi-va-cach-tranh\">Sai l\u1ea7m th\u01b0\u1eddng g\u1eb7p khi quy \u0111\u1ed5i v\u00e0 c\u00e1ch tr\u00e1nh<\/h2>\n<p>&#8211; D\u00f9ng 201 thay 304 trong m\u00f4i tr\u01b0\u1eddng ngo\u00e0i tr\u1eddi ven bi\u1ec3n:<br \/>\n  &#8211; 201 (Cr-Mn-N) kh\u00e1ng r\u1ed7 th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3; d\u1ec5 g\u1ec9 n\u00e2u. D\u00f9ng 304\/316 \u0111\u00fang chu\u1ea9n, tr\u00e1nh h\u00e0ng \u201cpha\u201d ngo\u00e0i ki\u1ec3m so\u00e1t.<br \/>\n&#8211; Hi\u1ec3u nh\u1ea7m \u201cDIN\u201d l\u00e0 m\u1ed9t m\u00e1c ri\u00eang:<br \/>\n  &#8211; \u201cDIN 1.4301\u201d ch\u1ec9 s\u1ed1 v\u1eadt li\u1ec7u t\u01b0\u01a1ng \u0111\u01b0\u01a1ng AISI 304; h\u00e3y \u0111\u1ed1i chi\u1ebfu theo EN 10088, kh\u00f4ng ch\u1ec9 d\u1ef1a \u201cDIN\u201d chung chung.<br \/>\n&#8211; B\u1ecf qua \u0111i\u1ec1u ki\u1ec7n luy\u1ec7n\/phan nhi\u1ec7t:<br \/>\n  &#8211; 17-4PH c\u1ea7n \u0111i\u1ec1u ki\u1ec7n h\u00f3a b\u1ec1n (H900, H1025\u2026) \u0111\u1ec3 \u0111\u1ea1t c\u01a1 t\u00ednh y\u00eau c\u1ea7u. Ch\u1ee9ng ch\u1ec9 ph\u1ea3i ghi r\u00f5 \u0111i\u1ec1u ki\u1ec7n.<br \/>\n&#8211; Ch\u1ecdn sai bi\u1ebfn th\u1ec3 420:<br \/>\n  &#8211; 420J1\/1.4021 v\u00e0 420J2\/1.4028 kh\u00e1c \u0111\u1ed9 C, \u1ea3nh h\u01b0\u1edfng \u0111\u1ed9 c\u1ee9ng. Ki\u1ec3m tra C% tr\u00ean MTC.<\/p>\n<h2 id=\"toc-5-vi-du-thuc-te-quy-doi-theo-ban-ve\">V\u00ed d\u1ee5 th\u1ef1c t\u1ebf quy \u0111\u1ed5i theo b\u1ea3n v\u1ebd<\/h2>\n<p>&#8211; Tr\u01b0\u1eddng h\u1ee3p 1: B\u1ea3n v\u1ebd ghi \u201cSUS304L, JIS G4304, t\u1ea5m 6 mm, d\u00f9ng cho b\u1ed3n ch\u1ee9a n\u01b0\u1edbc RO\u201d<br \/>\n  &#8211; T\u01b0\u01a1ng \u0111\u01b0\u01a1ng: ASTM A240 304L (UNS S30403) ho\u1eb7c EN 1.4307 (EN 10088-2). Kh\u1ea3 d\u1ee5ng r\u1ed9ng, ph\u00f9 h\u1ee3p h\u00e0n.<br \/>\n&#8211; Tr\u01b0\u1eddng h\u1ee3p 2: \u201c\u1ed0ng x\u1eed l\u00fd n\u01b0\u1edbc bi\u1ec3n, 2\u201d SCH40, 316L\u201d<br \/>\n  &#8211; T\u1ed1t h\u01a1n: 2205 (UNS S32205) theo ASTM A790 cho \u1ed1ng, t\u0103ng tu\u1ed5i th\u1ecd ch\u1ed1ng pitting\/SSC; n\u1ebfu v\u1eabn 316L, \u01b0u ti\u00ean 1.4435.<br \/>\n&#8211; Tr\u01b0\u1eddng h\u1ee3p 3: \u201cT\u1ea5m ch\u1ecbu nhi\u1ec7t 1050\u00b0C, 6 mm\u201d<br \/>\n  &#8211; Ch\u1ecdn 310S (1.4845) thay 309S n\u1ebfu nhi\u1ec7t \u0111\u1ed9 v\u1eadn h\u00e0nh th\u01b0\u1eddng xuy\u00ean >1000\u00b0C; x\u00e1c nh\u1eadn y\u00eau c\u1ea7u oxy h\u00f3a\/chu k\u1ef3 nhi\u1ec7t.<\/p>\n<h2 id=\"toc-6-goi-y-mua-hang-va-kiem-soat-chat-luong\">G\u1ee3i \u00fd mua h\u00e0ng v\u00e0 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng<\/h2>\n<p>&#8211; Y\u00eau c\u1ea7u b\u00e1o gi\u00e1 ghi r\u00f5:<br \/>\n  &#8211; M\u00e1c theo 2 h\u1ec7: v\u00ed d\u1ee5 \u201cASTM A240 316L (UNS S31603) \/ EN 1.4404\u201d.<br \/>\n  &#8211; Ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m \u00e1p d\u1ee5ng (ASTM\/EN\/JIS) v\u00e0 \u0111i\u1ec1u ki\u1ec7n giao h\u00e0ng (2B, BA, No.1\u2026).<br \/>\n&#8211; Ki\u1ec3m tra \u0111\u1ea7u v\u00e0o:<br \/>\n  &#8211; MTC\/CO\/CQ \u0111\u1ea7y \u0111\u1ee7; qu\u00e9t PMI\/EDS ng\u1eabu nhi\u00ean l\u00f4 h\u00e0ng \u0111\u1ec3 x\u00e1c nh\u1eadn Cr\/Ni\/Mo\/N ph\u00f9 h\u1ee3p.<br \/>\n  &#8211; V\u1edbi d\u1ef1 \u00e1n kh\u1eaft khe: y\u00eau c\u1ea7u th\u1eed \u0103n m\u00f2n (ASTM G48), test ferrite cho v\u1eadt li\u1ec7u h\u00e0n\/duplex, th\u1eed c\u01a1 t\u00ednh theo ti\u00eau chu\u1ea9n t\u01b0\u01a1ng \u1ee9ng.<br \/>\n&#8211; Nh\u00e0 cung c\u1ea5p uy t\u00edn:<br \/>\n  &#8211; \u01afu ti\u00ean \u0111\u01a1n v\u1ecb c\u00f3 t\u1ed3n kho \u0111\u1ee7 d\u1ea3i m\u00e1c v\u00e0 am hi\u1ec3u quy \u0111\u1ed5i ti\u00eau chu\u1ea9n, h\u1ed7 tr\u1ee3 truy xu\u1ea5t ngu\u1ed3n g\u1ed1c.<\/p>\n<h2 id=\"toc-7-nguon-tham-khao-va-tai-lieu-chuan\">Ngu\u1ed3n tham kh\u1ea3o v\u00e0 t\u00e0i li\u1ec7u chu\u1ea9n<\/h2>\n<p>&#8211; ASTM A240\/A240M \u2013 Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip<br \/>\n&#8211; ASTM A276 \u2013 Stainless Steel Bars and Shapes; ASTM A312 \u2013 Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes<br \/>\n&#8211; JIS G4303\/G4304\/G4305 \u2013 Stainless Steel Bars \/ Hot-rolled Plate, Sheet and Strip \/ Cold-rolled Sheet and Strip (Japanese Standards Association)<br \/>\n&#8211; EN 10088-1\/2\/3 \u2013 Stainless steels (Chemical composition and technical delivery conditions)<br \/>\n&#8211; Outokumpu Stainless Steel Finder (b\u1ea3ng so s\u00e1nh m\u00e1c v\u00e0 t\u00ednh n\u0103ng): https:\/\/www.outokumpu.com\/stainless-steel-finder<br \/>\n&#8211; BSSA (British Stainless Steel Association) \u2013 Grade Comparison Table: https:\/\/www.bssa.org.uk<br \/>\n&#8211; Nickel Institute \u2013 Alloy Datasheets v\u00e0 h\u01b0\u1edbng d\u1eabn ch\u1ecdn m\u00e1c ch\u1ecbu \u0103n m\u00f2n<\/p>\n<h2 id=\"toc-8-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>&#8211; M\u1ed7i m\u00e1c inox th\u01b0\u1eddng c\u00f3 t\u1ed1i thi\u1ec3u ba \u201ct\u00ean\u201d: AISI\/UNS (M\u1ef9), SUS (JIS Nh\u1eadt), v\u00e0 s\u1ed1 v\u1eadt li\u1ec7u 1.xxxx (DIN\/EN ch\u00e2u \u00c2u). Quy \u0111\u1ed5i \u0111\u00fang ph\u1ea3i d\u1ef1a tr\u00ean d\u1ea3i th\u00e0nh ph\u1ea7n v\u00e0 c\u01a1 t\u00ednh trong ti\u00eau chu\u1ea9n s\u1ea3n ph\u1ea9m t\u01b0\u01a1ng \u1ee9ng.<br \/>\n&#8211; V\u1edbi m\u00e1c th\u00f4ng d\u1ee5ng: 304 \u2194 SUS304 \u2194 1.4301; 316L \u2194 SUS316L \u2194 1.4404; 430 \u2194 SUS430 \u2194 1.4016; 17-4PH \u2194 SUS630 \u2194 1.4542; 2205 \u2194 SUS329J3L \u2194 1.4462.<br \/>\n&#8211; Th\u1eadn tr\u1ecdng v\u1edbi bi\u1ebfn th\u1ec3 c\u00f3 Mo\/N cao (1.4435\/1.4436), m\u00e1c \u1ed5n \u0111\u1ecbnh Ti\/Nb (321\/347), v\u00e0 nh\u00f3m martensitic\/ph ch\u1ecbu nhi\u1ec7t \u2014 ch\u1ecdn sai c\u00f3 th\u1ec3 suy gi\u1ea3m tu\u1ed5i th\u1ecd ho\u1eb7c kh\u00f4ng \u0111\u1ea1t chu\u1ea9n d\u1ef1 \u00e1n.<br \/>\n&#8211; Lu\u00f4n \u0111\u1ed1i chi\u1ebfu ch\u1ee9ng ch\u1ec9 MTC theo ASTM\/JIS\/EN, ki\u1ec3m tra th\u00e0nh ph\u1ea7n v\u00e0 c\u01a1 t\u00ednh th\u1ef1c t\u1ebf tr\u01b0\u1edbc khi ch\u1ea5p nh\u1eadn thay th\u1ebf.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n ch\u1ecdn m\u00e1c ho\u1eb7c so s\u00e1nh ch\u1ee9ng ch\u1ec9 cho d\u1ef1 \u00e1n c\u1ee5 th\u1ec3? Li\u00ean h\u1ec7 Inox Cuong Thinh \u0111\u1ec3 \u0111\u01b0\u1ee3c t\u01b0 v\u1ea5n k\u1ef9 thu\u1eadt v\u00e0 b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t.<br \/>\nHotline: 0343.417.281<br \/>\nEmail: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tra c\u1ee9u nhanh quy \u0111\u1ed5i m\u00e1c inox gi\u1eefa ASTM\/AISI-UNS, JIS (SUS) v\u00e0 DIN\/EN (W.-Nr.) cho 304\/304L, 316\/316L, 321, 430, 441, 17-4PH, 2205&#8230; k\u00e8m l\u01b0u \u00fd ch\u1ecdn \u0111\u00fang.<\/p>\n","protected":false},"author":7,"featured_media":1005,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1893","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\/1893","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=1893"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1893\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1005"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1893"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1893"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1893"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}