{"id":1891,"date":"2026-04-11T12:33:35","date_gmt":"2026-04-11T05:33:35","guid":{"rendered":"https:\/\/inoxcuongthinh.com\/giay-chung-nhan-mtc-dinh-nghia-cach-doc-va-tam-quan-trong\/"},"modified":"2026-04-11T12:33:35","modified_gmt":"2026-04-11T05:33:35","slug":"giay-chung-nhan-mtc-dinh-nghia-cach-doc-va-tam-quan-trong","status":"publish","type":"post","link":"https:\/\/inoxcuongthinh.com\/giay-chung-nhan-mtc-dinh-nghia-cach-doc-va-tam-quan-trong\/","title":{"rendered":"Gi\u1ea5y ch\u1ee9ng nh\u1eadn MTC: \u0110\u1ecbnh ngh\u0129a, c\u00e1ch \u0111\u1ecdc v\u00e0 t\u1ea7m quan tr\u1ecdng"},"content":{"rendered":"<div class=\"custom-toc\">\n<h3>N\u1ed9i dung ch\u00ednh<\/h3>\n<ul>\n<li><a href=\"#toc-0-mtc-mill-test-certificate-la-gi\">MTC (Mill Test Certificate) l\u00e0 g\u00ec?<\/a><\/li>\n<li><a href=\"#toc-1-khung-chuan-en-10204-va-phan-loai-chung-chi\">Khung chu\u1ea9n EN 10204 v\u00e0 ph\u00e2n lo\u1ea1i ch\u1ee9ng ch\u1ec9<\/a><\/li>\n<li><a href=\"#toc-2-mtc-lien-he-the-nao-voi-astm-jis-va-cocq\">MTC li\u00ean h\u1ec7 th\u1ebf n\u00e0o v\u1edbi ASTM, JIS v\u00e0 CO\/CQ?<\/a><\/li>\n<li><a href=\"#toc-3-mot-mtc-inox-chuan-gom-nhung-muc-gi\">M\u1ed9t MTC inox chu\u1ea9n g\u1ed3m nh\u1eefng m\u1ee5c g\u00ec?<\/a><\/li>\n<li><a href=\"#toc-4-cach-doc-mtc-inox-vi-du-thuc-te\">C\u00e1ch \u0111\u1ecdc MTC inox: v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/a><\/li>\n<li><a href=\"#toc-5-tai-sao-mtc-lai-quan-trong\">T\u1ea1i sao MTC l\u1ea1i quan tr\u1ecdng?<\/a><\/li>\n<li><a href=\"#toc-6-phan-biet-mtc-test-report-cua-nha-cung-cap-va-cq\">Ph\u00e2n bi\u1ec7t MTC, Test Report c\u1ee7a nh\u00e0 cung c\u1ea5p v\u00e0 CQ<\/a><\/li>\n<li><a href=\"#toc-7-rui-ro-thuong-gap-va-cach-phat-hien-mtc-gia\">R\u1ee7i ro th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch ph\u00e1t hi\u1ec7n MTC gi\u1ea3<\/a><\/li>\n<li><a href=\"#toc-8-nen-yeu-cau-gi-ve-mtc-trong-hop-dong-mua-inox\">N\u00ean y\u00eau c\u1ea7u g\u00ec v\u1ec1 MTC trong h\u1ee3p \u0111\u1ed3ng mua inox?<\/a><\/li>\n<li><a href=\"#toc-9-mot-so-gia-tri-chuan-thuong-gap-tham-khao-nhanh\">M\u1ed9t s\u1ed1 gi\u00e1 tr\u1ecb chu\u1ea9n th\u01b0\u1eddng g\u1eb7p (tham kh\u1ea3o nhanh)<\/a><\/li>\n<li><a href=\"#toc-10-luu-tru-va-truy-vet-mtc-trong-du-an\">L\u01b0u tr\u1eef v\u00e0 truy v\u1ebft MTC trong d\u1ef1 \u00e1n<\/a><\/li>\n<li><a href=\"#toc-11-khi-nao-can-32-thay-vi-31\">Khi n\u00e0o c\u1ea7n 3.2 thay v\u00ec 3.1?<\/a><\/li>\n<li><a href=\"#toc-12-cac-cau-hoi-nhanh\">C\u00e1c c\u00e2u h\u1ecfi nhanh<\/a><\/li>\n<li><a href=\"#toc-13-ket-luan\">K\u1ebft lu\u1eadn<\/a><\/li>\n<\/ul>\n<\/div>\n<p>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), Mill Test Certificate (MTC) l\u00e0 \u201cch\u1ee9ng minh th\u01b0\u201d c\u1ee7a v\u1eadt li\u1ec7u. B\u00e0i vi\u1ebft n\u00e0y gi\u1ea3i th\u00edch MTC l\u00e0 g\u00ec, v\u00ec sao n\u00f3 quan tr\u1ecdng, c\u00e1ch \u0111\u1ecdc \u0111\u00fang m\u1ed9t MTC inox theo EN 10204 v\u00e0 ASTM\/JIS, c\u0169ng nh\u01b0 c\u00e1ch ph\u00e1t hi\u1ec7n r\u1ee7i ro l\u00e0m gi\u1ea3 trong th\u1ef1c t\u1ebf d\u1ef1 \u00e1n t\u1ea1i Vi\u1ec7t Nam.<\/p>\n<h2 id=\"toc-0-mtc-mill-test-certificate-la-gi\">MTC (Mill Test Certificate) l\u00e0 g\u00ec?<\/h2>\n<p>MTC, c\u00f2n g\u1ecdi l\u00e0 Mill Test Report (MTR), l\u00e0 gi\u1ea5y ch\u1ee9ng nh\u1eadn do nh\u00e0 s\u1ea3n xu\u1ea5t th\u00e9p ph\u00e1t h\u00e0nh, x\u00e1c nh\u1eadn l\u00f4 v\u1eadt li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t, th\u1eed nghi\u1ec7m v\u00e0 \u0111\u1ea1t y\u00eau c\u1ea7u theo ti\u00eau chu\u1ea9n \u0111\u1eb7t h\u00e0ng. V\u1edbi inox, MTC th\u1ec3 hi\u1ec7n:<br \/>\n&#8211; Ngu\u1ed3n g\u1ed1c luy\u1ec7n kim (heat\/charge), m\u00e1c th\u00e9p (v\u00ed d\u1ee5: 304\/304L, 316\/316L, 201, 310S).<br \/>\n&#8211; Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc \u0111o \u0111\u01b0\u1ee3c.<br \/>\n&#8211; T\u00ednh ch\u1ea5t c\u01a1 l\u00fd (gi\u1edbi h\u1ea1n ch\u1ea3y, b\u1ec1n k\u00e9o, \u0111\u1ed9 gi\u00e3n d\u00e0i, \u0111\u1ed9 c\u1ee9ng\u2026).<br \/>\n&#8211; Ch\u1ebf \u0111\u1ed9 nhi\u1ec7t luy\u1ec7n, t\u00ecnh tr\u1ea1ng giao h\u00e0ng (annealed\/pickled, 2B\/BA\/No.1\u2026).<br \/>\n&#8211; K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m b\u1ed5 sung (NDT, \u0103n m\u00f2n, \u00e1p l\u1ef1c, PMI\u2026 n\u1ebfu c\u00f3).<br \/>\nMTC l\u00e0 t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt c\u1ee7a v\u1eadt li\u1ec7u, kh\u00f4ng ph\u1ea3i h\u00f3a \u0111\u01a1n hay tuy\u00ean b\u1ed1 \u0111\u01a1n thu\u1ea7n.<\/p>\n<h2 id=\"toc-1-khung-chuan-en-10204-va-phan-loai-chung-chi\">Khung chu\u1ea9n EN 10204 v\u00e0 ph\u00e2n lo\u1ea1i ch\u1ee9ng ch\u1ec9<\/h2>\n<p>EN 10204 l\u00e0 ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf quy \u0111\u1ecbnh c\u00e1c lo\u1ea1i ch\u1ee9ng ch\u1ec9 ki\u1ec3m tra s\u1ea3n ph\u1ea9m kim lo\u1ea1i:<br \/>\n&#8211; 2.1: Tuy\u00ean b\u1ed1 ph\u00f9 h\u1ee3p (kh\u00f4ng c\u00f3 s\u1ed1 li\u1ec7u th\u1eed nghi\u1ec7m).<br \/>\n&#8211; 2.2: B\u00e1o c\u00e1o th\u1eed nghi\u1ec7m theo l\u00f4 (c\u00f3 s\u1ed1 li\u1ec7u tham kh\u1ea3o, kh\u00f4ng truy xu\u1ea5t \u0111\u1ebfn heat\/l\u00f4 c\u1ee5 th\u1ec3).<br \/>\n&#8211; 3.1: Ch\u1ee9ng ch\u1ec9 do b\u1ed9 ph\u1eadn ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a nh\u00e0 s\u1ea3n xu\u1ea5t ph\u00e1t h\u00e0nh, k\u00e8m k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m c\u1ee7a ch\u00ednh l\u00f4\/heat giao h\u00e0ng, k\u00fd x\u00e1c nh\u1eadn \u0111\u1ed9c l\u1eadp v\u1edbi s\u1ea3n xu\u1ea5t.<br \/>\n&#8211; 3.2: Nh\u01b0 3.1 nh\u01b0ng c\u00f3 x\u00e1c nh\u1eadn b\u1ed5 sung c\u1ee7a b\u00ean th\u1ee9 ba (v\u00ed d\u1ee5: T\u00dcV, Lloyd\u2019s, BV, DNV).<\/p>\n<p>Trong \u0111a s\u1ed1 d\u1ef1 \u00e1n c\u00f4ng nghi\u1ec7p, inox ph\u1ea3i c\u00f3 ch\u1ee9ng ch\u1ec9 EN 10204 3.1; c\u00e1c h\u1ea1ng m\u1ee5c tr\u1ecdng y\u1ebfu (\u00e1p l\u1ef1c, ngo\u00e0i kh\u01a1i, h\u00f3a ch\u1ea5t) c\u00f3 th\u1ec3 y\u00eau c\u1ea7u 3.2.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o: EN 1024:2004; T\u00dcV S\u00dcD Guidance on EN 10204.<\/p>\n<h2 id=\"toc-2-mtc-lien-he-the-nao-voi-astm-jis-va-cocq\">MTC li\u00ean h\u1ec7 th\u1ebf n\u00e0o v\u1edbi ASTM, JIS v\u00e0 CO\/CQ?<\/h2>\n<p>&#8211; Chu\u1ea9n s\u1ea3n ph\u1ea9m: MTC s\u1ebd n\u00eau r\u00f5 v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u00e0 th\u1eed nghi\u1ec7m theo ti\u00eau chu\u1ea9n t\u01b0\u01a1ng \u1ee9ng, v\u00ed d\u1ee5:<br \/>\n  &#8211; T\u1ea5m\/cu\u1ed9n: ASTM A240\/A480; JIS G4304 (c\u00e1n n\u00f3ng), G4305 (c\u00e1n ngu\u1ed9i).<br \/>\n  &#8211; \u1ed0ng h\u00e0n\/\u0111\u00fac: ASTM A312\/A358; JIS G3463.<br \/>\n  &#8211; Thanh tr\u00f2n: ASTM A276\/A479.<br \/>\n&#8211; CO\/CQ:<br \/>\n  &#8211; CO (Certificate of Origin) l\u00e0 xu\u1ea5t x\u1ee9 h\u00e0ng h\u00f3a (ph\u1ee5c v\u1ee5 th\u01b0\u01a1ng m\u1ea1i\/h\u1ea3i quan), kh\u00f4ng ph\u1ea3n \u00e1nh ch\u1ea5t l\u01b0\u1ee3ng.<br \/>\n  &#8211; CQ \u1edf Vi\u1ec7t Nam th\u01b0\u1eddng d\u00f9ng linh ho\u1ea1t, c\u00f3 th\u1ec3 l\u00e0 b\u1ea3n tuy\u00ean b\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng c\u1ee7a nh\u00e0 cung c\u1ea5p. CQ kh\u00f4ng thay th\u1ebf MTC 3.1.<br \/>\n&#8211; K\u1ebft lu\u1eadn: \u0110\u1ec3 ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng, lu\u00f4n y\u00eau c\u1ea7u MTC theo EN 10204 3.1\/3.2 ph\u00f9 h\u1ee3p ti\u00eau chu\u1ea9n ASTM\/JIS \u0111\u1eb7t h\u00e0ng. CO ch\u1ec9 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xu\u1ea5t x\u1ee9.<\/p>\n<h2 id=\"toc-3-mot-mtc-inox-chuan-gom-nhung-muc-gi\">M\u1ed9t MTC inox chu\u1ea9n g\u1ed3m nh\u1eefng m\u1ee5c g\u00ec?<\/h2>\n<p>Th\u00f4ng tin c\u1ed1t l\u00f5i b\u1ea1n c\u1ea7n ki\u1ec3m tra:<br \/>\n&#8211; Nh\u1eadn di\u1ec7n nh\u00e0 m\u00e1y: t\u00ean, \u0111\u1ecba ch\u1ec9, ch\u1ee9ng nh\u1eadn ISO 9001, logo, m\u00e3 s\u1ed1 ph\u00e1t h\u00e0nh.<br \/>\n&#8211; S\u1ed1 heat\/lot: \u0111\u1ecbnh danh truy xu\u1ea5t n\u00f3ng luy\u1ec7n\/\u0111\u00fac. Ph\u1ea3i tr\u00f9ng v\u1edbi s\u1ed1 \u0111\u00f3ng tr\u00ean v\u1eadt li\u1ec7u ho\u1eb7c th\u1ebb treo.<br \/>\n&#8211; M\u00e1c\/chu\u1ea9n \u0111\u1ecbnh danh:<br \/>\n  &#8211; ASTM: v\u00ed d\u1ee5 316L (UNS S31603), 304 (UNS S30400), 304L (S30403), 201 (S20100).<br \/>\n  &#8211; EN: v\u00ed d\u1ee5 1.4301 (304), 1.4307 (304L), 1.4404 (316L).<br \/>\n  &#8211; JIS: SUS304, SUS304L, SUS316L.<br \/>\n&#8211; Quy c\u00e1ch s\u1ea3n ph\u1ea9m: \u0111\u1ed9 d\u00e0y, kh\u1ed5 r\u1ed9ng, chi\u1ec1u d\u00e0i; c\u1ee1 \u1ed1ng\/\u0111\u01b0\u1eddng k\u00ednh\/\u0111\u1ed9 d\u00e0y; b\u1ec1 m\u1eb7t (2B\/BA\/No.1); tr\u1ea1ng th\u00e1i nhi\u1ec7t luy\u1ec7n (solution annealed).<br \/>\n&#8211; Th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc (wt%): C, Mn, P, S, Si, Cr, Ni, Mo, N (c\u00f3 th\u1ec3 th\u00eam Cu, Nb, Ti\u2026).<br \/>\n&#8211; C\u01a1 t\u00ednh theo ASTM A370:<br \/>\n  &#8211; Gi\u1edbi h\u1ea1n ch\u1ea3y 0,2% (YS).<br \/>\n  &#8211; \u0110\u1ed9 b\u1ec1n k\u00e9o (UTS).<br \/>\n  &#8211; \u0110\u1ed9 gi\u00e3n d\u00e0i (A%).<br \/>\n  &#8211; \u0110\u1ed9 c\u1ee9ng (HRB\/HB) n\u1ebfu \u00e1p d\u1ee5ng theo ASTM A480\/A312.<br \/>\n&#8211; Th\u1eed nghi\u1ec7m b\u1ed5 sung:<br \/>\n  &#8211; Th\u1eed \u0103n m\u00f2n li\u00ean tinh ASTM A262 (\u0111\u1eb7c bi\u1ec7t v\u1edbi 304\/304L trong m\u00f4i tr\u01b0\u1eddng nh\u1ea1y c\u1ea3m).<br \/>\n  &#8211; Ki\u1ec3m tra ferrite cho 316\/316L h\u00e0n.<br \/>\n  &#8211; NDT: UT\/RT\/ET cho \u1ed1ng; th\u1ee7y l\u1ef1c\/hydrotest v\u1edbi \u1ed1ng theo ASTM A312.<br \/>\n  &#8211; PMI\/XRF (n\u1ebfu y\u00eau c\u1ea7u).<br \/>\n&#8211; K\u1ebft lu\u1eadn ph\u00f9 h\u1ee3p: ghi r\u00f5 \u201cComplies with ASTM A240\/A312\u2026\u201d.<br \/>\n&#8211; Ch\u1eef k\u00fd\/\u0111\u00f3ng d\u1ea5u: ng\u01b0\u1eddi c\u00f3 th\u1ea9m quy\u1ec1n QC; v\u1edbi 3.2 c\u00f3 th\u00eam x\u00e1c nh\u1eadn b\u00ean th\u1ee9 ba.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o: ASTM A240\/A480 (stainless plate\/sheet), ASTM A312 (stainless pipe), ASTM A370 (test methods).<\/p>\n<h2 id=\"toc-4-cach-doc-mtc-inox-vi-du-thuc-te\">C\u00e1ch \u0111\u1ecdc MTC inox: v\u00ed d\u1ee5 th\u1ef1c t\u1ebf<\/h2>\n<p>Gi\u1ea3 s\u1eed b\u1ea1n nh\u1eadn t\u1ea5m inox ghi \u201c316L, ASTM A240, 10 mm, No.1, 1500 x 6000\u201d.<br \/>\n&#8211; B\u01b0\u1edbc 1: \u0110\u1ed1i chi\u1ebfu m\u00e3 chu\u1ea9n<br \/>\n  &#8211; MTC ph\u1ea3i n\u00eau: ASTM A240, UNS S31603 ho\u1eb7c EN 1.4404, Delivery: Solution Annealed\/No.1.<br \/>\n&#8211; B\u01b0\u1edbc 2: Ki\u1ec3m tra th\u00e0nh ph\u1ea7n<br \/>\n  &#8211; 316L chu\u1ea9n: Cr ~16.0\u201318.0%; Ni ~10.0\u201314.0%; Mo ~2.0\u20133.0%; C \u22640.03%; N \u22640.11%.<br \/>\n  &#8211; N\u1ebfu Mo <1.9% ho\u1eb7c C >0.03% th\u00ec kh\u00f4ng \u0111\u1ea1t 316L.<br \/>\n&#8211; B\u01b0\u1edbc 3: Ki\u1ec3m tra c\u01a1 t\u00ednh t\u1ed1i thi\u1ec3u theo ASTM A240<br \/>\n  &#8211; YS \u2265170 MPa; UTS \u2265485 MPa; Elongation \u226540%; Hardness \u226495 HRB (\u2248\u2264217 HB).<br \/>\n&#8211; B\u01b0\u1edbc 4: Truy xu\u1ea5t heat number<br \/>\n  &#8211; S\u1ed1 heat tr\u00ean MTC ph\u1ea3i tr\u00f9ng s\u1ed1 \u0111\u00f3ng d\u1eadp tr\u00ean t\u1ea5m. N\u1ebfu t\u1ea5m kh\u00f4ng c\u00f3 d\u1ea5u nh\u1eadn di\u1ec7n ho\u1eb7c s\u1ed1 kh\u00f4ng tr\u00f9ng, c\u1ea7n PMI v\u00e0 l\u00e0m r\u00f5.<br \/>\n&#8211; B\u01b0\u1edbc 5: Xem th\u1eed nghi\u1ec7m b\u1ed5 sung<br \/>\n  &#8211; D\u1ef1 \u00e1n h\u00f3a ch\u1ea5t\/\u00e1p l\u1ef1c c\u00f3 th\u1ec3 y\u00eau c\u1ea7u A262 Practice E (Strauss), hydrotest (\u0111\u1ed1i v\u1edbi \u1ed1ng), UT (\u0111\u1ed1i v\u1edbi t\u1ea5m d\u00e0y).<br \/>\n&#8211; B\u01b0\u1edbc 6: K\u1ebft lu\u1eadn ph\u00f9 h\u1ee3p<br \/>\n  &#8211; Ph\u1ea3i c\u00f3 d\u00f2ng \u201cMaterial complies with ASTM A240 Type 316L\u201d. N\u1ebfu ch\u1ec9 ghi \u201csimilar to\u201d l\u00e0 kh\u00f4ng \u0111\u1ea1t.<\/p>\n<p>V\u00ed d\u1ee5 nhanh \u0111\u1ec3 ph\u00e2n bi\u1ec7t 304 v\u00e0 201:<br \/>\n&#8211; 304: Cr 18\u201320%; Ni 8\u201311%; Mn \u22642%.<br \/>\n&#8211; 201: Cr 16\u201318%; Ni 3.5\u20135.5%; Mn 5.5\u20137.5%.<br \/>\nN\u1ebfu MTC ghi Ni ~4% m\u00e0 l\u1ea1i khai 304 l\u00e0 d\u1ea5u hi\u1ec7u sai\/gi\u1ea3.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o: D\u1ea3i th\u00e0nh ph\u1ea7n trong ASTM A240; JIS G4304\/G4305.<\/p>\n<h2 id=\"toc-5-tai-sao-mtc-lai-quan-trong\">T\u1ea1i sao MTC l\u1ea1i quan tr\u1ecdng?<\/h2>\n<p>&#8211; Tu\u00e2n th\u1ee7 k\u1ef9 thu\u1eadt v\u00e0 an to\u00e0n: Ch\u1ee9ng minh v\u1eadt li\u1ec7u \u0111\u00e1p \u1ee9ng gi\u1edbi h\u1ea1n b\u1ec1n, \u0103n m\u00f2n, \u00e1p l\u1ef1c theo y\u00eau c\u1ea7u thi\u1ebft k\u1ebf\/ti\u00eau chu\u1ea9n.<br \/>\n&#8211; Truy xu\u1ea5t ngu\u1ed3n g\u1ed1c: G\u1eafn heat\/l\u00f4 v\u1edbi s\u1ea3n ph\u1ea9m l\u1eafp \u0111\u1eb7t, ph\u1ee5c v\u1ee5 nghi\u1ec7m thu, b\u1ea3o h\u00e0nh v\u00e0 \u0111i\u1ec1u tra s\u1ef1 c\u1ed1.<br \/>\n&#8211; Y\u00eau c\u1ea7u h\u1ed3 s\u01a1 thanh quy\u1ebft to\u00e1n: Ch\u1ee7 \u0111\u1ea7u t\u01b0\/t\u01b0 v\u1ea5n th\u01b0\u1eddng b\u1eaft bu\u1ed9c MTC 3.1\/3.2 \u0111\u1ec3 nghi\u1ec7m thu.<br \/>\n&#8211; B\u1ea3o v\u1ec7 chi ph\u00ed v\u00f2ng \u0111\u1eddi: Ch\u1ecdn \u0111\u00fang 316L thay v\u00ec 304 c\u00f3 th\u1ec3 gi\u1ea3m chi ph\u00ed \u0103n m\u00f2n; MTC l\u00e0 b\u1eb1ng ch\u1ee9ng quy\u1ebft \u0111\u1ecbnh.<br \/>\n&#8211; Tu\u00e2n th\u1ee7 ph\u00e1p l\u00fd v\u00e0 \u0111\u1ea5u th\u1ea7u: \u0110\u00e1p \u1ee9ng ti\u00eau ch\u00ed k\u1ef9 thu\u1eadt, tr\u00e1nh r\u1ee7i ro b\u1ecb lo\u1ea1i h\u1ed3 s\u01a1.<\/p>\n<h2 id=\"toc-6-phan-biet-mtc-test-report-cua-nha-cung-cap-va-cq\">Ph\u00e2n bi\u1ec7t MTC, Test Report c\u1ee7a nh\u00e0 cung c\u1ea5p v\u00e0 CQ<\/h2>\n<p>&#8211; MTC (3.1\/3.2): Do nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t ph\u00e1t h\u00e0nh cho \u0111\u00fang heat\/l\u00f4 giao h\u00e0ng (v\u00e0\/ho\u1eb7c b\u00ean th\u1ee9 ba ch\u1ee9ng ki\u1ebfn).<br \/>\n&#8211; Test Report c\u1ee7a nh\u00e0 ph\u00e2n ph\u1ed1i: T\u00e0i li\u1ec7u n\u1ed9i b\u1ed9 tham kh\u1ea3o, kh\u00f4ng thay th\u1ebf MTC.<br \/>\n&#8211; CQ: \u1ede Vi\u1ec7t Nam th\u01b0\u1eddng l\u00e0 v\u0103n b\u1ea3n tuy\u00ean b\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng k\u00e8m\/kh\u00f4ng k\u00e8m s\u1ed1 li\u1ec7u; kh\u00f4ng thay th\u1ebf MTC.<\/p>\n<h2 id=\"toc-7-rui-ro-thuong-gap-va-cach-phat-hien-mtc-gia\">R\u1ee7i ro th\u01b0\u1eddng g\u1eb7p v\u00e0 c\u00e1ch ph\u00e1t hi\u1ec7n MTC gi\u1ea3<\/h2>\n<p>&#8211; S\u1ed1 heat kh\u00f4ng tr\u00f9ng d\u1ea5u tr\u00ean v\u1eadt li\u1ec7u ho\u1eb7c m\u1ed9t MTC \u201cph\u1ee7\u201d cho nhi\u1ec1u k\u00edch th\u01b0\u1edbc\/lo\u1ea1i th\u00e9p kh\u00e1c nhau b\u1ea5t th\u01b0\u1eddng.<br \/>\n&#8211; D\u1ea3i th\u00e0nh ph\u1ea7n ngo\u00e0i chu\u1ea9n:<br \/>\n  &#8211; 304 c\u00f3 Mo ~2% (sai v\u00ec 304 g\u1ea7n nh\u01b0 kh\u00f4ng y\u00eau c\u1ea7u Mo).<br \/>\n  &#8211; 316L c\u00f3 C >0.03% (kh\u00f4ng ph\u1ea3i L).<br \/>\n  &#8211; 201 c\u00f3 Ni ~8% (kh\u00f4ng ph\u00f9 h\u1ee3p).<br \/>\n&#8211; C\u01a1 t\u00ednh \u201c\u0111\u1eb9p qu\u00e1 m\u1ee9c\u201d gi\u1ed1ng h\u1ec7t gi\u1eefa nhi\u1ec1u heat kh\u00e1c nhau; l\u1ed7i ch\u00ednh t\u1ea3, \u0111\u1ecbnh d\u1ea1ng font l\u1ed9n x\u1ed9n, thi\u1ebfu ch\u1eef k\u00fd QC.<br \/>\n&#8211; Thi\u1ebfu ti\u00eau chu\u1ea9n vi\u1ec7n d\u1eabn r\u00f5 r\u00e0ng (v\u00ed d\u1ee5 ch\u1ec9 ghi \u201cStainless Steel Sheet\u201d).<br \/>\n&#8211; Kh\u00f4ng c\u00f3 li\u00ean k\u1ebft ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng (ISO 9001) c\u1ee7a nh\u00e0 m\u00e1y.<br \/>\nC\u00e1ch x\u1eed l\u00fd:<br \/>\n&#8211; Y\u00eau c\u1ea7u MTC b\u1ea3n g\u1ed1c PDF c\u00f3 m\u00e3 v\u1ea1ch\/QR ho\u1eb7c s\u1ed1 ph\u00e1t h\u00e0nh; x\u00e1c minh v\u1edbi nh\u00e0 m\u00e1y.<br \/>\n&#8211; PMI\/XRF t\u1ea1i ch\u1ed7 v\u1edbi m\u1eabu ng\u1eabu nhi\u00ean; th\u1eed \u0103n m\u00f2n li\u00ean tinh khi y\u00eau c\u1ea7u.<br \/>\n&#8211; Nh\u1edd b\u00ean th\u1ee9 ba (SGS, T\u00dcV, BV) x\u00e1c minh khi d\u1ef1 \u00e1n quan tr\u1ecdng.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o: T\u00dcV S\u00dcD\/SGS v\u1ec1 x\u00e1c minh ch\u1ee9ng ch\u1ec9 v\u1eadt li\u1ec7u.<\/p>\n<h2 id=\"toc-8-nen-yeu-cau-gi-ve-mtc-trong-hop-dong-mua-inox\">N\u00ean y\u00eau c\u1ea7u g\u00ec v\u1ec1 MTC trong h\u1ee3p \u0111\u1ed3ng mua inox?<\/h2>\n<p>&#8211; Lo\u1ea1i ch\u1ee9ng ch\u1ec9: EN 10204 3.1 (ho\u1eb7c 3.2 n\u1ebfu d\u1ef1 \u00e1n quy \u0111\u1ecbnh).<br \/>\n&#8211; Ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng: ASTM A240\/A480 (t\u1ea5m); ASTM A312 (\u1ed1ng); ASTM A276\/A479 (thanh); JIS t\u01b0\u01a1ng \u0111\u01b0\u01a1ng n\u1ebfu \u0111\u1eb7t h\u00e0ng theo JIS.<br \/>\n&#8211; M\u00e1c v\u00e0 \u0111\u1ecbnh danh: ASTM\/UNS v\u00e0 EN s\u1ed1 v\u1eadt li\u1ec7u; v\u00ed d\u1ee5 316L (UNS S31603\/EN 1.4404).<br \/>\n&#8211; Quy c\u00e1ch v\u00e0 b\u1ec1 m\u1eb7t: \u0111\u1ed9 d\u00e0y, chi\u1ec1u r\u1ed9ng\/d\u00e0i, dung sai theo ASTM A480 (\u0111\u1ed9 d\u00e0y\/\u0111\u1ed9 ph\u1eb3ng), ho\u00e0n thi\u1ec7n b\u1ec1 m\u1eb7t (2B\/BA\/No.1).<br \/>\n&#8211; T\u00ecnh tr\u1ea1ng nhi\u1ec7t luy\u1ec7n: Solution annealed &#038; pickled.<br \/>\n&#8211; Th\u1eed nghi\u1ec7m b\u1ed5 sung:<br \/>\n  &#8211; A262 Practice E (n\u1ebfu m\u00f4i tr\u01b0\u1eddng nh\u1ea1y c\u1ea3m).<br \/>\n  &#8211; NDT cho \u1ed1ng (UT\/ET\/RT) v\u00e0\/ho\u1eb7c hydrotest theo ASTM A312.<br \/>\n  &#8211; PMI tr\u01b0\u1edbc giao.<br \/>\n&#8211; D\u1ea5u nh\u1eadn di\u1ec7n: Y\u00eau c\u1ea7u \u0111\u00f3ng d\u1eadp\/kh\u1eafc laser s\u1ed1 heat v\u00e0 m\u00e1c tr\u00ean v\u1eadt li\u1ec7u.<br \/>\n&#8211; H\u1ed3 s\u01a1 \u0111i k\u00e8m: B\u1ea3n v\u1ebd, packing list, CO (n\u1ebfu c\u1ea7n), h\u01b0\u1edbng d\u1eabn l\u01b0u kho ch\u1ed1ng nhi\u1ec5m s\u1eaft.<\/p>\n<h2 id=\"toc-9-mot-so-gia-tri-chuan-thuong-gap-tham-khao-nhanh\">M\u1ed9t s\u1ed1 gi\u00e1 tr\u1ecb chu\u1ea9n th\u01b0\u1eddng g\u1eb7p (tham kh\u1ea3o nhanh)<\/h2>\n<p>&#8211; 304 (ASTM A240, t\u1ea5m \u1ee7): UTS \u2265515 MPa; YS \u2265205 MPa; A% \u226540%; HRB \u226492 (\u2248HB \u2264201).<br \/>\n&#8211; 316L (ASTM A240, t\u1ea5m \u1ee7): UTS \u2265485 MPa; YS \u2265170 MPa; A% \u226540%; HRB \u226495 (\u2248HB \u2264217).<br \/>\n&#8211; \u1ed0ng A312 304\/316L: y\u00eau c\u1ea7u th\u1eed \u00e1p\/hay NDE, th\u1eed d\u1eb9t\/lo\u00e9 (flattening\/flaring) theo ti\u00eau chu\u1ea9n.<br \/>\nL\u01b0u \u00fd: Ki\u1ec3m tra chi ti\u1ebft theo phi\u00ean b\u1ea3n ti\u00eau chu\u1ea9n \u00e1p d\u1ee5ng cho \u0111\u01a1n h\u00e0ng.<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o: ASTM A240\/A480; ASTM A312; ASTM A370.<\/p>\n<h2 id=\"toc-10-luu-tru-va-truy-vet-mtc-trong-du-an\">L\u01b0u tr\u1eef v\u00e0 truy v\u1ebft MTC trong d\u1ef1 \u00e1n<\/h2>\n<p>&#8211; G\u1eafn nh\u00e3n v\u1eadt t\u01b0 theo heat s\u1ed1, li\u00ean k\u1ebft v\u1edbi MTC trong h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd t\u00e0i li\u1ec7u.<br \/>\n&#8211; S\u1ed1 h\u00f3a MTC, \u0111\u1eb7t quy t\u1eafc \u0111\u1eb7t t\u00ean file: Project-Pack-Item-HeatNo-Revision.<br \/>\n&#8211; Qu\u00e9t QR\/Barcode c\u1ee7a nh\u00e0 m\u00e1y (n\u1ebfu c\u00f3) \u0111\u1ec3 x\u00e1c th\u1ef1c nhanh.<br \/>\n&#8211; L\u01b0u chu\u1ed7i truy xu\u1ea5t: PO \u2192 Packing list \u2192 MTC \u2192 Bi\u00ean b\u1ea3n PMI\/NDT \u2192 V\u1ecb tr\u00ed l\u1eafp \u0111\u1eb7t.<\/p>\n<h2 id=\"toc-11-khi-nao-can-32-thay-vi-31\">Khi n\u00e0o c\u1ea7n 3.2 thay v\u00ec 3.1?<\/h2>\n<p>&#8211; C\u00e1c \u1ee9ng d\u1ee5ng r\u1ee7i ro cao: n\u1ed3i h\u01a1i\/\u00e1p l\u1ef1c, d\u1ea7u kh\u00ed ngo\u00e0i kh\u01a1i, h\u00f3a ch\u1ea5t \u0111\u1ed9c h\u1ea1i, y\u00eau c\u1ea7u c\u1ee7a ph\u00e2n c\u1ea5p (Class).<br \/>\n&#8211; Ch\u1ee7 \u0111\u1ea7u t\u01b0\/ti\u00eau chu\u1ea9n ri\u00eang y\u00eau c\u1ea7u nh\u00e2n ch\u1ee9ng \u0111\u1ed9c l\u1eadp cho t\u1eebng l\u00f4\/heat v\u00e0 th\u1eed nghi\u1ec7m \u0111i k\u00e8m.<\/p>\n<p>Ngu\u1ed3n: EN 10204:2004; Quy \u0111\u1ecbnh c\u1ee7a c\u00e1c t\u1ed5 ch\u1ee9c ph\u00e2n c\u1ea5p nh\u01b0 DNV, Lloyd\u2019s, BV.<\/p>\n<h2 id=\"toc-12-cac-cau-hoi-nhanh\">C\u00e1c c\u00e2u h\u1ecfi nhanh<\/h2>\n<p>&#8211; MTC c\u00f3 thay th\u1ebf CO\/CQ kh\u00f4ng? Kh\u00f4ng. MTC l\u00e0 ch\u1ee9ng ch\u1ec9 k\u1ef9 thu\u1eadt; CO l\u00e0 xu\u1ea5t x\u1ee9; CQ l\u00e0 tuy\u00ean b\u1ed1 ch\u1ea5t l\u01b0\u1ee3ng n\u1ed9i b\u1ed9.<br \/>\n&#8211; T\u1ea5m c\u1eaft l\u1ebb c\u00f3 c\u1ea7n MTC? C\u00f3, nh\u01b0ng ph\u1ea3i truy v\u1ebft \u0111\u01b0\u1ee3c v\u1ec1 heat\/l\u00f4 g\u1ed1c. Nh\u00e0 cung c\u1ea5p uy t\u00edn s\u1ebd cung c\u1ea5p MTC k\u00e8m s\u1ed1 heat t\u01b0\u01a1ng \u1ee9ng.<br \/>\n&#8211; PMI c\u00f3 thay MTC? Kh\u00f4ng. PMI ch\u1ec9 x\u00e1c minh nhanh th\u00e0nh ph\u1ea7n b\u1ec1 m\u1eb7t; MTC cung c\u1ea5p \u0111\u1ea7y \u0111\u1ee7 th\u1eed nghi\u1ec7m v\u00e0 truy xu\u1ea5t.<\/p>\n<h2 id=\"toc-13-ket-luan\">K\u1ebft lu\u1eadn<\/h2>\n<p>MTC l\u00e0 t\u00e0i li\u1ec7u b\u1eaft bu\u1ed9c \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o inox b\u1ea1n mua \u0111\u00fang m\u00e1c, \u0111\u00fang ti\u00eau chu\u1ea9n v\u00e0 an to\u00e0n cho v\u1eadn h\u00e0nh. H\u00e3y y\u00eau c\u1ea7u EN 10204 3.1 (ho\u1eb7c 3.2 khi c\u1ea7n), ki\u1ec3m tra th\u00e0nh ph\u1ea7n v\u00e0 c\u01a1 t\u00ednh theo ASTM\/JIS, \u0111\u1ed1i chi\u1ebfu s\u1ed1 heat, v\u00e0 x\u00e1c minh khi c\u00f3 nghi ng\u1edd. Qu\u1ea3n l\u00fd MTC t\u1ed1t gi\u00fap b\u1ea1n ki\u1ec3m so\u00e1t r\u1ee7i ro, nghi\u1ec7m thu thu\u1eadn l\u1ee3i v\u00e0 t\u1ed1i \u01b0u chi ph\u00ed v\u00f2ng \u0111\u1eddi d\u1ef1 \u00e1n.<\/p>\n<p>C\u1ea7n t\u01b0 v\u1ea5n l\u1ef1a ch\u1ecdn m\u00e1c inox, r\u00e0 so\u00e1t MTC ho\u1eb7c b\u00e1o gi\u00e1 t\u1ed1t nh\u1ea5t? Li\u00ean h\u1ec7 Inox C\u01b0\u1eddng Th\u1ecbnh:<br \/>\n&#8211; Hotline: 0343.417.281<br \/>\n&#8211; Email: inoxcongnghiep.cuongthinh@gmail.com<\/p>\n<p>Ngu\u1ed3n tham kh\u1ea3o:<br \/>\n&#8211; EN 10204:2004 Metallic products \u2013 Types of inspection documents.<br \/>\n&#8211; ASTM A240\/A480 (t\u1ea5m, d\u1ea3i, t\u1ea5m l\u00e1 inox); ASTM A312 (\u1ed1ng inox); ASTM A370 (ph\u01b0\u01a1ng ph\u00e1p th\u1eed c\u01a1 t\u00ednh).<br \/>\n&#8211; JIS G4304\/G4305 (th\u00e9p kh\u00f4ng g\u1ec9 c\u00e1n n\u00f3ng\/c\u00e1n ngu\u1ed9i).<br \/>\n&#8211; T\u00dcV S\u00dcD, SGS: H\u01b0\u1edbng d\u1eabn x\u00e1c minh ch\u1ee9ng ch\u1ec9 v\u1eadt li\u1ec7u v\u00e0 EN 10204.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec3u r\u00f5 MTC l\u00e0 g\u00ec, c\u00e1c m\u1ee9c EN 10204 (2.1\/2.2\/3.1\/3.2), c\u00e1ch \u0111\u1ecdc h\u00f3a c\u01a1 l\u00fd, ch\u1ed1ng gi\u1ea3 v\u00e0 v\u00ec sao MTC quy\u1ebft \u0111\u1ecbnh ch\u1ea5t l\u01b0\u1ee3ng inox trong m\u1ecdi d\u1ef1 \u00e1n.<\/p>\n","protected":false},"author":7,"featured_media":1020,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1891","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\/1891","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=1891"}],"version-history":[{"count":0,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/posts\/1891\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media\/1020"}],"wp:attachment":[{"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/media?parent=1891"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/categories?post=1891"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/inoxcuongthinh.com\/inct\/wp\/v2\/tags?post=1891"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}