{"id":4784,"date":"2025-04-25T03:09:51","date_gmt":"2025-04-25T03:09:51","guid":{"rendered":"https:\/\/nanotechvietnam.com\/?post_type=product&p=4784"},"modified":"2025-04-25T03:23:54","modified_gmt":"2025-04-25T03:23:54","slug":"bulong-astm-a490-a490m","status":"publish","type":"product","link":"https:\/\/nanotechvietnam.com\/en\/product\/bulong-astm-a490-a490m\/","title":{"rendered":"Bulong ASTM A490\/A490M"},"content":{"rendered":"

ASTM A490 v\u00e0 ASTM A490M l\u00e0 ti\u00eau chu\u1ea9n d\u00e0nh cho bu l\u00f4ng k\u1ebft c\u1ea5u n\u1eb7ng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb th\u00e9p h\u1ee3p kim\u00a0thu\u1ed9c ASTM International. ASTM l\u00e0 m\u1ed9t t\u1ed5 ch\u1ee9c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf th\u1ef1c hi\u1ec7n ph\u00e1t tri\u1ec3n v\u00e0 xu\u1ea5t b\u1ea3n c\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt cho bu l\u00f4ng k\u1ebft c\u1ea5u, th\u00e9p h\u1ee3p kim, x\u1eed l\u00fd nhi\u1ec7t. Bulong ASTM A490 c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u l\u00e0 150 ksi. C\u00f2n t\u00ednh theo h\u1ec7 m\u00e9t th\u00ec ti\u00eau chu\u1ea9n n\u00e0y t\u01b0\u01a1ng \u0111\u01b0\u01a1ng l\u00e0 m\u1ed9t bulong c\u01b0\u1eddng \u0111\u1ed9 cao c\u1ea5p b\u1ec1n 10.9 d\u00e0nh cho ng\u00e0nh k\u1ebft c\u1ea5u th\u00e9p.<\/p>\n

V\u00e0o n\u0103m 2016, ti\u00eau chu\u1ea9n ASTM A490 \u0111\u00e3 ch\u00ednh th\u1ee9c b\u1ecb r\u00fat l\u1ea1i v\u00e0 thay th\u1ebf b\u1eb1ng ti\u00eau chu\u1ea9n ASTM F3125, A490 hi\u1ec7n tr\u1edf th\u00e0nh c\u1ea5p theo ti\u00eau chu\u1ea9n F3125. \u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt F3125 l\u00e0 s\u1ef1 h\u1ee3p nh\u1ea5t v\u00e0 thay th\u1ebf c\u1ee7a s\u00e1u ti\u00eau chu\u1ea9n ASTM, bao g\u1ed3m A325 , A325M, A490, A490M, F1852 v\u00e0 F2280. Ch\u00fang t\u00f4i ch\u1ecdn gi\u1eef th\u00f4ng tin \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt A490 ch\u1ec9 cho m\u1ee5c \u0111\u00edch tham kh\u1ea3o v\u00e0 cung c\u1ea5p th\u00f4ng tin.<\/p>\n

Bulong ASTM A490 l\u00e0 ti\u00eau chu\u1ea9n cho bulong k\u1ebft c\u1ea5u l\u1ee5c gi\u00e1c \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u1edbi ba lo\u1ea1i kh\u00e1c nhau:<\/p>\n\n\n\n\n\n\n
Lo\u1ea1i 1<\/th>\nTh\u00e9p Carbon v\u00e0 h\u1ee3p kim trung b\u00ecnh<\/th>\n<\/tr>\n<\/thead>\n
Lo\u1ea1i 2<\/td>\n\u0110\u00e3 thu h\u1ed3i v\u00e0o n\u0103m 2002<\/td>\n<\/tr>\n
Lo\u1ea1i 3<\/td>\nTh\u00e9p phong h\u00f3a<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\"\" \"\" \"\"<\/p>\n

\u1ee8ng d\u1ee5ng bulong ASTM A490<\/h3>\n

C\u0169ng nh\u01b0 bulong ti\u00eau chu\u1ea9n ASTM A325, ASTM A490 c\u0169ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng ph\u1ed5 bi\u1ebfn trong ng\u00e0nh k\u1ebft c\u1ea5u th\u00e9p, c\u1ea7u \u0111\u01b0\u1eddng, vi\u1ec5n th\u00f4ng, c\u00e1c m\u1ed1i n\u1ed1i c\u1ea7n ch\u1ecbu l\u1ef1c l\u1edbn, v\u1ecb tr\u00ed k\u1ebft c\u1ea5u ph\u1ee9c t\u1ea1p, c\u00e1c li\u00ean k\u1ebft \u0111\u01b0\u1eddng \u1ed1ng \u00e1p l\u1ef1c cao, li\u00ean k\u1ebft trong c\u00e1c thi\u1ebft b\u1ecb m\u00e1y m\u00f3c t\u1ea3i tr\u1ecdng l\u1edbn,\u2026 nh\u01b0ng v\u1edbi c\u01b0\u1eddng \u0111\u1ed9 cao h\u01a1n.<\/p>\n

\"\"<\/div>\n
\n

Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt Bulong ASTM A490<\/h3>\n

\"\" \"\"<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Pitch<\/th>\nBody Diameter, E<\/th>\nAF, F<\/th>\nAC, G<\/th>\nHead Height, H<\/th>\nMinimum Fillet Radius, R<\/th>\nThread Length, LT, Ref.<\/th>\nMaximum Transition Thread Length, Y, Ref.<\/th>\nMaximum Runout of Bearing Surface FIM<\/th>\n<\/tr>\n
Max.<\/th>\nMin.<\/th>\nMax.<\/th>\nMin.<\/th>\nMax.<\/th>\nMin.<\/th>\nMax.<\/th>\nMin.<\/th>\n<\/tr>\n<\/thead>\n
M12 x 1.75<\/td>\n12.70<\/td>\n11.30<\/td>\n21.00<\/td>\n20.16<\/td>\n24.25<\/td>\n22.78<\/td>\n7.95<\/td>\n7.05<\/td>\n0.60<\/td>\n25<\/td>\n5.2<\/td>\n0.4<\/td>\n<\/tr>\n
M16 x 2<\/td>\n16.70<\/td>\n15.30<\/td>\n27.00<\/td>\n26.16<\/td>\n31.18<\/td>\n29.56<\/td>\n10.75<\/td>\n9.25<\/td>\n0.60<\/td>\n31<\/td>\n6.0<\/td>\n0.5<\/td>\n<\/tr>\n
M20 x 2.5<\/td>\n20.84<\/td>\n19.16<\/td>\n34.00<\/td>\n33.00<\/td>\n39.26<\/td>\n37.29<\/td>\n13.40<\/td>\n11.60<\/td>\n0.80<\/td>\n36<\/td>\n7.5<\/td>\n0.6<\/td>\n<\/tr>\n
M22 x 2.5<\/td>\n22.84<\/td>\n21.16<\/td>\n36.00<\/td>\n35.00<\/td>\n41.57<\/td>\n39.55<\/td>\n14.90<\/td>\n13.10<\/td>\n0.80<\/td>\n38<\/td>\n7.5<\/td>\n0.6<\/td>\n<\/tr>\n
M24 x 3<\/td>\n24.84<\/td>\n23.16<\/td>\n41.00<\/td>\n40.00<\/td>\n47.34<\/td>\n45.20<\/td>\n15.90<\/td>\n14.10<\/td>\n1.00<\/td>\n41<\/td>\n9.0<\/td>\n0.7<\/td>\n<\/tr>\n
M27 x 3<\/td>\n27.84<\/td>\n26.16<\/td>\n46.00<\/td>\n45.00<\/td>\n53.12<\/td>\n50.85<\/td>\n17.90<\/td>\n16.10<\/td>\n1.20<\/td>\n44<\/td>\n9.0<\/td>\n0.8<\/td>\n<\/tr>\n
M30 x 3.5<\/td>\n30.84<\/td>\n29.16<\/td>\n50.00<\/td>\n49.00<\/td>\n57.74<\/td>\n55.37<\/td>\n19.75<\/td>\n17.65<\/td>\n1.20<\/td>\n49<\/td>\n10.5<\/td>\n0.9<\/td>\n<\/tr>\n
M36 x 4<\/td>\n37.00<\/td>\n35.00<\/td>\n60.00<\/td>\n58.80<\/td>\n69.28<\/td>\n66.44<\/td>\n23.55<\/td>\n21.45<\/td>\n1.50<\/td>\n56<\/td>\n12.0<\/td>\n1.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Chi\u1ec1u d\u00e0i ren<\/h3>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Nominal Length, L<\/th>\nM12 x 1.75<\/th>\nM16 x 2<\/th>\nM20 x 2.5<\/th>\nM22 x 2.5<\/th>\nM24 x 3<\/th>\nM27 x 3<\/th>\nM30 x 3.5<\/th>\nM36 x 4<\/th>\n<\/tr>\n
LG, Max.<\/th>\nLS, Min.<\/th>\nLG, Max.<\/th>\nLS, Min.<\/th>\nLG, Max.<\/th>\nLS, Min.<\/th>\nLG, Max.<\/th>\nLS, Min.<\/th>\nLG, Max.<\/th>\nLS, Min.<\/th>\nLG, Max.<\/th>\nLS, Min.<\/th>\nLG, Max.<\/th>\nLS, Min.<\/th>\nLG, Max.<\/th>\nLS, Min.<\/th>\n<\/tr>\n<\/thead>\n
40<\/td>\n15<\/td>\n9.8<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
45<\/td>\n20<\/td>\n14.8<\/td>\n14<\/td>\n8<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
50<\/td>\n25<\/td>\n19.8<\/td>\n19<\/td>\n13<\/td>\n14<\/td>\n6.5<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
55<\/td>\n30<\/td>\n24.8<\/td>\n24<\/td>\n18<\/td>\n19<\/td>\n11.5<\/td>\n17<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
60<\/td>\n35<\/td>\n29.8<\/td>\n29<\/td>\n23<\/td>\n24<\/td>\n16.5<\/td>\n22<\/td>\n14.5<\/td>\n19<\/td>\n10<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
65<\/td>\n40<\/td>\n34.8<\/td>\n34<\/td>\n28<\/td>\n29<\/td>\n21.5<\/td>\n27<\/td>\n19.5<\/td>\n24<\/td>\n15<\/td>\n21<\/td>\n12<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
70<\/td>\n45<\/td>\n39.8<\/td>\n39<\/td>\n33<\/td>\n34<\/td>\n26.5<\/td>\n32<\/td>\n24.5<\/td>\n29<\/td>\n20<\/td>\n26<\/td>\n17<\/td>\n21<\/td>\n10.5<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
75<\/td>\n50<\/td>\n44.8<\/td>\n44<\/td>\n38<\/td>\n39<\/td>\n31.5<\/td>\n37<\/td>\n29.5<\/td>\n34<\/td>\n25<\/td>\n31<\/td>\n22<\/td>\n26<\/td>\n15.5<\/td>\n\u2013<\/td>\n\u2013<\/td>\n<\/tr>\n
80<\/td>\n55<\/td>\n49.8<\/td>\n49<\/td>\n43<\/td>\n44<\/td>\n36.5<\/td>\n42<\/td>\n34.5<\/td>\n39<\/td>\n30<\/td>\n36<\/td>\n27<\/td>\n31<\/td>\n20.5<\/td>\n19<\/td>\n7<\/td>\n<\/tr>\n
85<\/td>\n60<\/td>\n54.8<\/td>\n54<\/td>\n48<\/td>\n49<\/td>\n41.5<\/td>\n47<\/td>\n39.5<\/td>\n44<\/td>\n35<\/td>\n41<\/td>\n32<\/td>\n36<\/td>\n25.5<\/td>\n24<\/td>\n12<\/td>\n<\/tr>\n
90<\/td>\n65<\/td>\n59.8<\/td>\n59<\/td>\n53<\/td>\n54<\/td>\n46.5<\/td>\n52<\/td>\n44.5<\/td>\n49<\/td>\n40<\/td>\n46<\/td>\n37<\/td>\n41<\/td>\n30.5<\/td>\n29<\/td>\n17<\/td>\n<\/tr>\n
95<\/td>\n70<\/td>\n64.8<\/td>\n64<\/td>\n58<\/td>\n59<\/td>\n51.5<\/td>\n57<\/td>\n49.5<\/td>\n54<\/td>\n45<\/td>\n51<\/td>\n42<\/td>\n46<\/td>\n35.5<\/td>\n34<\/td>\n22<\/td>\n<\/tr>\n
100<\/td>\n75<\/td>\n69.8<\/td>\n69<\/td>\n63<\/td>\n64<\/td>\n56.5<\/td>\n62<\/td>\n54.5<\/td>\n59<\/td>\n50<\/td>\n56<\/td>\n47<\/td>\n51<\/td>\n40.5<\/td>\n39<\/td>\n57<\/td>\n<\/tr>\n
110<\/td>\n\u2013<\/td>\n\u2013<\/td>\n79<\/td>\n73<\/td>\n74<\/td>\n66.5<\/td>\n72<\/td>\n64.5<\/td>\n69<\/td>\n60<\/td>\n66<\/td>\n57<\/td>\n61<\/td>\n50.5<\/td>\n44<\/td>\n32<\/td>\n<\/tr>\n
120<\/td>\n\u2013<\/td>\n\u2013<\/td>\n89<\/td>\n83<\/td>\n84<\/td>\n76.5<\/td>\n82<\/td>\n74.5<\/td>\n79<\/td>\n70<\/td>\n76<\/td>\n67<\/td>\n71<\/td>\n60.5<\/td>\n54<\/td>\n42<\/td>\n<\/tr>\n
130<\/td>\n\u2013<\/td>\n\u2013<\/td>\n99<\/td>\n93<\/td>\n94<\/td>\n86.5<\/td>\n92<\/td>\n84.5<\/td>\n89<\/td>\n80<\/td>\n86<\/td>\n77<\/td>\n81<\/td>\n70.5<\/td>\n64<\/td>\n52<\/td>\n<\/tr>\n
140<\/td>\n\u2013<\/td>\n\u2013<\/td>\n109<\/td>\n103<\/td>\n104<\/td>\n96.5<\/td>\n102<\/td>\n94.5<\/td>\n99<\/td>\n90<\/td>\n96<\/td>\n87<\/td>\n91<\/td>\n80.5<\/td>\n74<\/td>\n62<\/td>\n<\/tr>\n
150<\/td>\n\u2013<\/td>\n\u2013<\/td>\n119<\/td>\n113<\/td>\n114<\/td>\n106.5<\/td>\n112<\/td>\n104.5<\/td>\n109<\/td>\n100<\/td>\n106<\/td>\n97<\/td>\n101<\/td>\n90.5<\/td>\n84<\/td>\n72<\/td>\n<\/tr>\n
160<\/td>\n\u2013<\/td>\n\u2013<\/td>\n129<\/td>\n123<\/td>\n124<\/td>\n116.5<\/td>\n122<\/td>\n114.5<\/td>\n119<\/td>\n110<\/td>\n116<\/td>\n107<\/td>\n111<\/td>\n100.5<\/td>\n94<\/td>\n82<\/td>\n<\/tr>\n
170<\/td>\n\u2013<\/td>\n\u2013<\/td>\n139<\/td>\n133<\/td>\n134<\/td>\n126.5<\/td>\n132<\/td>\n124.5<\/td>\n129<\/td>\n120<\/td>\n126<\/td>\n117<\/td>\n121<\/td>\n110.5<\/td>\n104<\/td>\n92<\/td>\n<\/tr>\n
180<\/td>\n\u2013<\/td>\n\u2013<\/td>\n149<\/td>\n143<\/td>\n144<\/td>\n136.5<\/td>\n142<\/td>\n134.5<\/td>\n139<\/td>\n130<\/td>\n136<\/td>\n127<\/td>\n131<\/td>\n120.5<\/td>\n114<\/td>\n102<\/td>\n<\/tr>\n
190<\/td>\n\u2013<\/td>\n\u2013<\/td>\n159<\/td>\n153<\/td>\n154<\/td>\n146.5<\/td>\n152<\/td>\n144.5<\/td>\n149<\/td>\n140<\/td>\n146<\/td>\n137<\/td>\n141<\/td>\n130.5<\/td>\n124<\/td>\n112<\/td>\n<\/tr>\n
200<\/td>\n\u2013<\/td>\n\u2013<\/td>\n169<\/td>\n163<\/td>\n164<\/td>\n156.5<\/td>\n162<\/td>\n154.5<\/td>\n159<\/td>\n150<\/td>\n156<\/td>\n147<\/td>\n151<\/td>\n140.5<\/td>\n134<\/td>\n122<\/td>\n<\/tr>\n
210<\/td>\n\u2013<\/td>\n\u2013<\/td>\n179<\/td>\n173<\/td>\n174<\/td>\n166.5<\/td>\n172<\/td>\n164.5<\/td>\n169<\/td>\n160<\/td>\n166<\/td>\n157<\/td>\n161<\/td>\n150.5<\/td>\n144<\/td>\n132<\/td>\n<\/tr>\n
220<\/td>\n\u2013<\/td>\n\u2013<\/td>\n189<\/td>\n183<\/td>\n184<\/td>\n176.5<\/td>\n182<\/td>\n174.5<\/td>\n179<\/td>\n170<\/td>\n176<\/td>\n167<\/td>\n171<\/td>\n160.5<\/td>\n154<\/td>\n142<\/td>\n<\/tr>\n
230<\/td>\n\u2013<\/td>\n\u2013<\/td>\n199<\/td>\n193<\/td>\n194<\/td>\n186.5<\/td>\n192<\/td>\n184.5<\/td>\n189<\/td>\n180<\/td>\n186<\/td>\n177<\/td>\n181<\/td>\n170.5<\/td>\n164<\/td>\n152<\/td>\n<\/tr>\n
240<\/td>\n\u2013<\/td>\n\u2013<\/td>\n209<\/td>\n203<\/td>\n204<\/td>\n196.5<\/td>\n202<\/td>\n194.5<\/td>\n199<\/td>\n190<\/td>\n196<\/td>\n187<\/td>\n191<\/td>\n180.5<\/td>\n174<\/td>\n162<\/td>\n<\/tr>\n
250<\/td>\n\u2013<\/td>\n\u2013<\/td>\n219<\/td>\n213<\/td>\n214<\/td>\n206.5<\/td>\n212<\/td>\n204.5<\/td>\n209<\/td>\n200<\/td>\n206<\/td>\n197<\/td>\n201<\/td>\n190.5<\/td>\n184<\/td>\n172<\/td>\n<\/tr>\n
260<\/td>\n\u2013<\/td>\n\u2013<\/td>\n229<\/td>\n223<\/td>\n224<\/td>\n216.5<\/td>\n222<\/td>\n214.5<\/td>\n219<\/td>\n210<\/td>\n216<\/td>\n207<\/td>\n211<\/td>\n200.5<\/td>\n194<\/td>\n182<\/td>\n<\/tr>\n
270<\/td>\n\u2013<\/td>\n\u2013<\/td>\n239<\/td>\n233<\/td>\n234<\/td>\n226.5<\/td>\n232<\/td>\n224.5<\/td>\n229<\/td>\n220<\/td>\n226<\/td>\n217<\/td>\n221<\/td>\n210.5<\/td>\n204<\/td>\n192<\/td>\n<\/tr>\n
280<\/td>\n\u2013<\/td>\n\u2013<\/td>\n249<\/td>\n243<\/td>\n244<\/td>\n236.5<\/td>\n242<\/td>\n234.5<\/td>\n239<\/td>\n230<\/td>\n236<\/td>\n227<\/td>\n231<\/td>\n220.5<\/td>\n214<\/td>\n202<\/td>\n<\/tr>\n
290<\/td>\n\u2013<\/td>\n\u2013<\/td>\n259<\/td>\n253<\/td>\n254<\/td>\n246.5<\/td>\n252<\/td>\n244.5<\/td>\n249<\/td>\n240<\/td>\n246<\/td>\n237<\/td>\n241<\/td>\n230.5<\/td>\n224<\/td>\n212<\/td>\n<\/tr>\n
300<\/td>\n\u2013<\/td>\n\u2013<\/td>\n269<\/td>\n263<\/td>\n264<\/td>\n256.5<\/td>\n262<\/td>\n254.5<\/td>\n259<\/td>\n250<\/td>\n256<\/td>\n247<\/td>\n251<\/td>\n240.5<\/td>\n234<\/td>\n222<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

C\u01a1 T\u00ednh<\/h3>\n\n\n\n\n\n\n
Nominal Diameter, mm<\/th>\nTensile Strength, min, Mpa<\/th>\nYield Strength (0.2 % offset), min, Mpa<\/th>\nElongation in 50 mm, min, %<\/th>\nRediction in Area, min, %<\/th>\n<\/tr>\n
Min<\/th>\nMax<\/th>\n<\/tr>\n<\/thead>\n
M12 to M36, Inclusive<\/td>\n1040<\/td>\n1210<\/td>\n940<\/td>\n14<\/td>\n40<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

H\u00f3a h\u1ecdc<\/h3>\n\n\n\n\n\n\n\n
Th\u00e0nh ph\u1ea7n<\/th>\nCacbon<\/th>\nMangan,
\nmin.<\/th>\n		Ph\u1ed1t pho,
\nmax.<\/th>\n		L\u01b0u hu\u1ef3nh,
\nmax.<\/th>\n<\/tr>\n
\u2264 1\u215c (M30)<\/th>\n\u2265 1\u00bd (M36)<\/th>\n<\/tr>\n<\/thead>\n
Heat Analysis, %<\/td>\n0.30 \u2013 0.48<\/td>\n0.35 \u2013 0.53<\/td>\n0.60<\/td>\n0.040<\/td>\n0.040<\/td>\n<\/tr>\n
Product Analysis, %<\/td>\n0.28 \u2013 0.50<\/td>\n0.33 \u2013 0.55<\/td>\n0.57<\/td>\n0.045<\/td>\n0.045<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

\u0110ai \u1ed0c \u2013 Long \u0110\u1ec1n \u0111i k\u00e8m<\/h3>\n\n\n\n\n\n\n
Bulong<\/th>\n\u0110ai \u1ed0c<\/th>\nLong \u0110\u1ec1n<\/th>\n<\/tr>\n<\/thead>\n
A325<\/td>\nA563 ho\u1eb7c A194 2H<\/td>\nF436 ho\u1eb7c F959<\/td>\n<\/tr>\n
A325M<\/td>\nA563M ho\u1eb7c A194 2HM<\/td>\nF436M ho\u1eb7c F959M<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

L\u1edbp m\u1ea1<\/h3>\n

Bulong A490 th\u01b0\u1eddng l\u00e0 h\u00e0ng th\u00f4 ho\u1eb7c \u0111\u01b0\u1ee3c m\u1ea1 geomet, dacromet, \u0111\u01b0\u1ee3c ch\u1ec9 \u0111\u1ecbnh trong th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt theo ti\u00eau chu\u1ea9n: ASTM F1136, F2833 ho\u1eb7c F3019. Bulong A490\u00a0KH\u00d4NG N\u00caN<\/strong>\u00a0m\u1ea1 k\u1ebdm c\u01a1 h\u1ecdc v\u00ec n\u00f3 s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 khu\u1ebfch t\u00e1n hydro (Hydrogen and Brittleness) l\u00e0m cho bulong tr\u1edf n\u00ean gi\u00f2n h\u01a1n r\u1ea5t nhi\u1ec1u v\u1ec1 l\u00e2u d\u00e0i v\u00e0 t\u00ednh to\u00e0n v\u1eb9n c\u1ea5u tr\u00fac.<\/p>\n","protected":false},"excerpt":{"rendered":"

ASTM A490 v\u00e0 ASTM A490M l\u00e0 ti\u00eau chu\u1ea9n d\u00e0nh cho bu l\u00f4ng k\u1ebft c\u1ea5u n\u1eb7ng \u0111\u01b0\u1ee3c l\u00e0m t\u1eeb th\u00e9p h\u1ee3p kim\u00a0thu\u1ed9c ASTM International. ASTM l\u00e0 m\u1ed9t t\u1ed5 ch\u1ee9c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf th\u1ef1c hi\u1ec7n ph\u00e1t tri\u1ec3n v\u00e0 xu\u1ea5t b\u1ea3n c\u00e1c ti\u00eau chu\u1ea9n k\u1ef9 thu\u1eadt cho bu l\u00f4ng k\u1ebft c\u1ea5u, th\u00e9p h\u1ee3p kim, x\u1eed l\u00fd nhi\u1ec7t. Bulong ASTM A490 c\u00f3 \u0111\u1ed9 b\u1ec1n k\u00e9o t\u1ed1i thi\u1ec3u l\u00e0 150 ksi. C\u00f2n t\u00ednh theo h\u1ec7 m\u00e9t th\u00ec ti\u00eau chu\u1ea9n n\u00e0y t\u01b0\u01a1ng \u0111\u01b0\u01a1ng l\u00e0 m\u1ed9t bulong c\u01b0\u1eddng \u0111\u1ed9 cao c\u1ea5p b\u1ec1n 10.9 d\u00e0nh cho ng\u00e0nh k\u1ebft c\u1ea5u th\u00e9p.<\/p>\n

V\u00e0o n\u0103m 2016, ti\u00eau chu\u1ea9n ASTM A490 \u0111\u00e3 ch\u00ednh th\u1ee9c b\u1ecb r\u00fat l\u1ea1i v\u00e0 thay th\u1ebf b\u1eb1ng ti\u00eau chu\u1ea9n ASTM F3125, A490 hi\u1ec7n tr\u1edf th\u00e0nh c\u1ea5p theo ti\u00eau chu\u1ea9n F3125. \u0110\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt F3125 l\u00e0 s\u1ef1 h\u1ee3p nh\u1ea5t v\u00e0 thay th\u1ebf c\u1ee7a s\u00e1u ti\u00eau chu\u1ea9n ASTM, bao g\u1ed3m A325 , A325M, A490, A490M, F1852 v\u00e0 F2280. Ch\u00fang t\u00f4i ch\u1ecdn gi\u1eef th\u00f4ng tin \u0111\u1eb7c \u0111i\u1ec3m k\u1ef9 thu\u1eadt A490 ch\u1ec9 cho m\u1ee5c \u0111\u00edch tham kh\u1ea3o v\u00e0 cung c\u1ea5p th\u00f4ng tin.<\/p>\n","protected":false},"featured_media":4800,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_cat":[208,207],"product_tag":[],"_links":{"self":[{"href":"https:\/\/nanotechvietnam.com\/en\/wp-json\/wp\/v2\/product\/4784"}],"collection":[{"href":"https:\/\/nanotechvietnam.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/nanotechvietnam.com\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/nanotechvietnam.com\/en\/wp-json\/wp\/v2\/comments?post=4784"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nanotechvietnam.com\/en\/wp-json\/wp\/v2\/media\/4800"}],"wp:attachment":[{"href":"https:\/\/nanotechvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=4784"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/nanotechvietnam.com\/en\/wp-json\/wp\/v2\/product_cat?post=4784"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/nanotechvietnam.com\/en\/wp-json\/wp\/v2\/product_tag?post=4784"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}