ASTM, hu ua American Society for Testing and Materials, yog ib lub koom haum qauv thoob ntiaj teb uas muaj lub luag haujlwm rau kev tsim thiab tshaj tawm cov qauv rau ntau yam lag luam. Cov qauv no muab cov txheej txheem xeem sib xws, cov lus qhia tshwj xeeb thiab cov lus qhia rau kev lag luam hauv Asmeskas. Cov qauv no yog tsim los xyuas kom meej tias cov khoom zoo, kev ua tau zoo, thiab kev nyab xeeb ntawm cov khoom thiab cov ntaub ntawv thiab los pab txhawb kev lag luam thoob ntiaj teb kom zoo.
Qhov sib txawv thiab kev npog ntawm ASTM cov qauv yog dav thiab npog ntau yam teb suav nrog, tab sis tsis txwv rau, kev tshawb fawb txog cov ntaub ntawv, kev tsim kho vaj tse, chemistry, kev tsim hluav taws xob, thiab kev tsim kho tshuab. ASTM cov qauv npog txhua yam los ntawm kev sim thiab kev soj ntsuam cov khoom siv raw mus rau qhov yuav tsum tau ua thiab kev taw qhia thaum tsim khoom, tsim khoom, thiab siv.
ASTM A36/A36M:
Cov qauv txheem rau cov hlau uas suav nrog cov kev cai rau cov hlau carbon rau kev tsim kho, kev tsim khoom, thiab lwm yam kev siv engineering.
A36 Hlau PhajCov Qauv Kev Siv Txoj Cai
Tus qauv ua tiav ASTM A36/A36M-03a, (sib npaug rau ASME code)
A36 phajsiv
Cov txheej txheem no siv rau cov choj thiab cov tsev uas muaj cov qauv riveted, bolted thiab welded, nrog rau cov hlau carbon zoo, phaj thiab tuav, thiab cov hlau ua haujlwm dav dav. Cov hlau A36 muaj li ntawm 240MP, thiab yuav nce nrog cov tuab ntawm cov khoom kom txo cov nqi tsim tawm, vim muaj cov pa roj carbon nruab nrab, kev ua tau zoo tag nrho zoo dua, lub zog, plasticity thiab vuam thiab lwm yam khoom kom tau txais kev sib tw zoo dua, feem ntau siv dav.
A36 steel phaj tshuaj lom neeg muaj pes tsawg leeg:
C: ≤ 0.25, Si ≤ 0.40, Mn: ≤ 0.80-1.20, P ≤ 0.04, S: ≤ 0.05, Cu ≥ 0.20 (thaum cov kev cai ntawm cov hlau uas muaj tooj liab).
Cov khoom siv kho tshuab:
Lub zog tawm los: ≥250.
Lub zog tensile: 400-550.
Kev ntev: ≥20.
Lub teb chaws tus qauv thiab A36 cov khoom siv zoo ib yam li Q235.
Lub sijhawm tshaj tawm: Lub Rau Hli-24-2024
