{"id":7021,"date":"2021-02-11T13:18:33","date_gmt":"2021-02-11T05:18:33","guid":{"rendered":"https:\/\/xzfastener.com\/?p=7021"},"modified":"2026-06-23T13:20:24","modified_gmt":"2026-06-23T05:20:24","slug":"threaded-rod-strength-grades-4-8-8-8-b7-and-stainless-steel-options","status":"publish","type":"post","link":"https:\/\/xzfastener.com\/vi\/threaded-rod-strength-grades-4-8-8-8-b7-and-stainless-steel-options\/","title":{"rendered":"C\u1ea5p \u0111\u1ed9 b\u1ec1n thanh ren: 4.8, 8.8, B7 v\u00e0 Th\u00e9p kh\u00f4ng g\u1ec9 T\u00f9y ch\u1ecdn"},"content":{"rendered":"

Thanh ren tr\u00f4ng c\u00f3 v\u1ebb \u0111\u01a1n gi\u1ea3n, nh\u01b0ng vi\u1ec7c l\u1ef1a ch\u1ecdn lo\u1ea1i l\u00e0 n\u01a1i b\u1eaft \u0111\u1ea7u c\u00f3 nhi\u1ec1u sai l\u1ea7m khi mua. Thanh c\u00f3 \u0111\u1ed9 b\u1ec1n th\u1ea5p c\u00f3 th\u1ec3 b\u1ecb u\u1ed1n cong ho\u1eb7c gi\u00e3n ra. Thanh c\u01b0\u1eddng \u0111\u1ed9 cao c\u00f3 th\u1ec3 kh\u00f4ng c\u1ea7n thi\u1ebft ho\u1eb7c kh\u00f4ng ph\u00f9 h\u1ee3p \u0111\u1ec3 ch\u1ed1ng \u0103n m\u00f2n. S\u1ef1 l\u1ef1a ch\u1ecdn \u0111\u00fang \u0111\u1eafn ph\u1ee5 thu\u1ed9c v\u00e0o t\u1ea3i tr\u1ecdng, m\u00f4i tr\u01b0\u1eddng, h\u1ec7 th\u1ed1ng ren, ti\u00eau chu\u1ea9n v\u00e0 \u0111ai \u1ed1c ph\u00f9 h\u1ee3p.<\/p>\n\n\n\n

C\u00e1c c\u1ea5p \u0111\u1ed9 b\u1ec1n c\u1ee7a thanh ren ph\u1ed5 bi\u1ebfn<\/h2>\n\n\n\n

So s\u00e1nh l\u1edbp<\/h3>\n\n\n\n
L\u1edbp \/ Ch\u1ea5t li\u1ec7u<\/th>M\u1ee9c \u0111\u1ed9 s\u1ee9c m\u1ea1nh \u0111i\u1ec3n h\u00ecnh<\/th>S\u1eed d\u1ee5ng chung<\/th><\/tr><\/thead>
Lo\u1ea1i th\u00e9p cacbon<\/td>Gi\u1edbi thi\u1ec7u v\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o MPa (400 MPa)<\/td>Gi\u00e1 \u0111\u1ee1 nh\u1eb9, c\u1ed1 \u0111\u1ecbnh chung, h\u1ed7 tr\u1ee3 kh\u00f4ng quan tr\u1ecdng<\/td><\/tr>
Lo\u1ea1i th\u00e9p cacbon (8.8)<\/td>Gi\u1edbi thi\u1ec7u v\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o MPa (800 MPa)<\/td>M\u00e1y m\u00f3c, k\u1ebft c\u1ea5u th\u00e9p, c\u1ee5m ch\u1ecbu t\u1ea3i cao h\u01a1n<\/td><\/tr>
ASTM A193 B7<\/td>V\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o 125 ksi<\/td>M\u1eb7t b\u00edch, \u0111\u01b0\u1eddng \u1ed1ng \u00e1p l\u1ef1c, d\u1ea7u kh\u00ed, d\u1ecbch v\u1ee5 nhi\u1ec7t \u0111\u1ed9 cao<\/td><\/tr>
304\/Th\u00e9p kh\u00f4ng g\u1ec9 A2<\/td>\u0110\u1ed9 b\u1ec1n trung b\u00ecnh, ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t<\/td>Trong nh\u00e0, thi\u1ebft b\u1ecb th\u1ef1c ph\u1ea9m, s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi s\u1ea1ch s\u1ebd<\/td><\/tr>
316\/Th\u00e9p kh\u00f4ng g\u1ec9 A4<\/td>\u0110\u1ed9 b\u1ec1n trung b\u00ecnh, kh\u00e1ng clorua t\u1ed1t h\u01a1n<\/td>\u1ee8ng d\u1ee5ng h\u00e0ng h\u1ea3i, ven bi\u1ec3n, h\u00f3a ch\u1ea5t, n\u01b0\u1edbc th\u1ea3i<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u0110\u1ed1i v\u1edbi ngu\u1ed3n cung \u1ee9ng chung, ng\u01b0\u1eddi mua c\u00f3 th\u1ec3 xem l\u1ea1i to\u00e0n b\u1ed9 d\u00f2ng s\u1ea3n ph\u1ea9m chi ti\u1ebft si\u1ebft ch\u1eb7t c\u00f4ng nghi\u1ec7p<\/a> v\u00e0 sau \u0111\u00f3 thu h\u1eb9p c\u1ea5p thanh ren theo \u1ee9ng d\u1ee5ng.<\/p>\n\n\n\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 ch\u1ecdn \u0111\u00fang l\u1edbp<\/h2>\n\n\n\n

S\u1eed d\u1ee5ng 4.8 cho c\u00f4ng vi\u1ec7c nh\u1eb9 nh\u00e0ng<\/h3>\n\n\n\n

Thanh ren lo\u1ea1i 4.8 r\u1ea5t ti\u1ebft ki\u1ec7m v\u00e0 d\u1ec5 t\u00ecm ngu\u1ed3n. Ch\u00fang th\u00edch h\u1ee3p cho h\u1ec7 th\u1ed1ng treo nh\u1eb9, khay c\u00e1p, gi\u00e1 \u0111\u1ee1 v\u00e0 c\u00e1c thi\u1ebft b\u1ecb c\u1ed1 \u0111\u1ecbnh th\u00f4ng th\u01b0\u1eddng \u1edf nh\u1eefng n\u01a1i c\u00f3 t\u1ea3i tr\u1ecdng v\u1eeba ph\u1ea3i.<\/p>\n\n\n\n

Kh\u00f4ng s\u1eed d\u1ee5ng thanh cho c\u00e1c m\u1ed1i n\u1ed1i k\u1ebft c\u1ea5u, n\u00e2ng h\u1ea1 ho\u1eb7c ch\u1ecbu rung \u0111\u1ed9ng n\u1eb7ng tr\u1eeb khi k\u1ef9 s\u01b0 \u0111\u00e3 ph\u00ea duy\u1ec7t thi\u1ebft k\u1ebf.<\/p>\n\n\n\n

S\u1eed d\u1ee5ng 8.8 cho t\u1ea3i tr\u1ecdng c\u01a1 h\u1ecdc cao h\u01a1n<\/h3>\n\n\n\n

Thanh ren lo\u1ea1i 8.8 mang l\u1ea1i \u0111\u1ed9 b\u1ec1n cao h\u01a1n nhi\u1ec1u so v\u1edbi lo\u1ea1i 4.8. Ch\u00fang ph\u1ed5 bi\u1ebfn trong c\u00e1c \u0111\u1ebf m\u00e1y m\u00f3c, khung th\u00e9p, c\u1ee5m neo v\u00e0 c\u00e1c gi\u00e1 \u0111\u1ee1 c\u00f4ng nghi\u1ec7p.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n c\u00f3 t\u1ea3i tr\u1ecdng quan tr\u1ecdng, h\u00e3y so s\u00e1nh c\u00e1c y\u00eau c\u1ea7u v\u1edbi \u1ed1c v\u00edt c\u01b0\u1eddng \u0111\u1ed9 cao<\/a> tr\u01b0\u1edbc khi x\u00e1c nh\u1eadn \u0111i\u1ec3m.<\/p>\n\n\n\n

S\u1eed d\u1ee5ng B7 cho d\u1ecbch v\u1ee5 \u00e1p su\u1ea5t v\u00e0 h\u00f3a d\u1ea7u<\/h3>\n\n\n\n

ASTM A193 B7 l\u00e0 lo\u1ea1i th\u00e9p h\u1ee3p kim \u0111\u01b0\u1ee3c t\u00f4i v\u00e0 t\u00f4i luy\u1ec7n \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i v\u1edbi c\u00e1c lo\u1ea1i \u0111ai \u1ed1c ASTM A194 2H. N\u00f3 ph\u1ed5 bi\u1ebfn trong m\u1eb7t b\u00edch, van, \u0111\u01b0\u1eddng \u1ed1ng v\u00e0 thi\u1ebft b\u1ecb l\u1ecdc d\u1ea7u.<\/p>\n\n\n\n

B7 kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t s\u1ef1 thay th\u1ebf \u0111\u01a1n gi\u1ea3n cho s\u1ed1 li\u1ec7u 8.8. N\u00f3 thu\u1ed9c v\u1ec1 m\u1ed9t h\u1ec7 th\u1ed1ng ti\u00eau chu\u1ea9n kh\u00e1c v\u00e0 th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c lu\u1ed3ng inch ch\u1eb3ng h\u1ea1n nh\u01b0 UNC.<\/p>\n\n\n\n

T\u00f9y ch\u1ecdn th\u00e9p kh\u00f4ng g\u1ec9<\/h2>\n\n\n\n

Ch\u1ecdn theo s\u1ef1 \u0103n m\u00f2n, kh\u00f4ng ch\u1ec9 s\u1ee9c m\u1ea1nh<\/h3>\n\n\n\n

304 th\u00e9p kh\u00f4ng g\u1ec9 ho\u1ea1t \u0111\u1ed9ng t\u1ed1t trong kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n n\u00f3i chung. 316 th\u00e9p kh\u00f4ng g\u1ec9 t\u1ed1t h\u01a1n \u1edf nh\u1eefng n\u01a1i c\u00f3 clorua, b\u1ee5i mu\u1ed1i ho\u1eb7c ti\u1ebfp x\u00fac v\u1edbi h\u00f3a ch\u1ea5t.<\/p>\n\n\n\n

\u0110\u1ed1i v\u1edbi c\u00e1c t\u00f9y ch\u1ecdn kh\u00f4ng g\u1ec9, xem \u1ed1c v\u00edt b\u1eb1ng th\u00e9p kh\u00f4ng g\u1ec9<\/a> v\u00e0 s\u1ef1 so s\u00e1nh n\u00e0y 304 so v\u1edbi 316 bu l\u00f4ng th\u00e9p kh\u00f4ng g\u1ec9<\/a>.<\/p>\n\n\n\n

Danh s\u00e1ch ki\u1ec3m tra ng\u01b0\u1eddi mua<\/h2>\n\n\n\n

Tr\u01b0\u1edbc khi \u0111\u1eb7t h\u00e0ng thanh ren, h\u00e3y x\u00e1c nh\u1eadn:<\/p>\n\n\n\n

    \n
  • Ren h\u1ec7 m\u00e9t ho\u1eb7c inch.<\/li>\n\n\n\n
  • \u0110\u1eb3ng c\u1ea5p v\u00e0 ti\u00eau chu\u1ea9n.<\/li>\n\n\n\n
  • Chi\u1ec1u d\u00e0i t\u1ed5ng th\u1ec3 v\u00e0 dung sai c\u1eaft.<\/li>\n\n\n\n
  • Y\u00eau c\u1ea7u v\u1ec1 lo\u1ea1i \u0111ai \u1ed1c v\u00e0 v\u00f2ng \u0111\u1ec7m.<\/li>\n\n\n\n
  • L\u1edbp ph\u1ee7 ho\u1eb7c v\u1eadt li\u1ec7u kh\u00f4ng g\u1ec9.<\/li>\n\n\n\n
  • Y\u00eau c\u1ea7u v\u1ec1 ch\u1ee9ng ch\u1ec9.<\/li>\n\n\n\n
  • \u1ee8ng d\u1ee5ng cu\u1ed1i c\u00f9ng v\u00e0 \u0111i\u1ec1u ki\u1ec7n t\u1ea3i.<\/li>\n<\/ul>\n\n\n\n

    Kh\u00f4ng bao gi\u1edd n\u00ean mua thanh ren ch\u1ec9 theo \u0111\u01b0\u1eddng k\u00ednh. C\u1ea5p \u0111\u1ed9, v\u1eadt li\u1ec7u, \u0111\u1ed9 ph\u00f9 h\u1ee3p c\u1ee7a \u0111ai \u1ed1c v\u00e0 m\u00f4i tr\u01b0\u1eddng quy\u1ebft \u0111\u1ecbnh li\u1ec7u n\u00f3 c\u00f3 ho\u1ea1t \u0111\u1ed9ng an to\u00e0n tr\u00ean hi\u1ec7n tr\u01b0\u1eddng hay kh\u00f4ng.<\/p>","protected":false},"excerpt":{"rendered":"

    Threaded rod looks simple, but grade selection is where many buying mistakes start. A low-strength rod may bend or stretch. A high-strength rod may be unnecessary or unsuitable for corrosion exposure. The right choice depends on load, environment, thread system, standard, and matching nuts. Common Threaded Rod Strength Grades Grade Comparison Grade \/ Material Typical […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[479],"tags":[504],"class_list":["post-7021","post","type-post","status-publish","format-standard","hentry","category-fastener-knowledge-library","tag-strength-grades-mechanical-properties"],"acf":[],"_links":{"self":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/7021","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/comments?post=7021"}],"version-history":[{"count":1,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/7021\/revisions"}],"predecessor-version":[{"id":7022,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/posts\/7021\/revisions\/7022"}],"wp:attachment":[{"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/media?parent=7021"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/categories?post=7021"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/xzfastener.com\/vi\/wp-json\/wp\/v2\/tags?post=7021"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}