ASTM A283 PHAJ STEEL NTA QA thiab intermediate tensile zog zog cov roj hlau steel phaj ntawm cov qauv tsim zoo. Nws muaj plaub qhov sib txawv, txhua tus sawv cev ua ib qho khoom siv cais. Cov khoom siv cov khoom hauv qab no qhia tau ntau dua txhua yam txawv.
Qhov no qhia txog plaub cov qhab nia ntawm cov paib hlau ntawm cov qauv tsim qauv zoo rau kev thov dav dav. Cov qauv hlau yuav tsum tau ua piv txwv ua haujlwm los ntawm qhib {{1} {- pa oxygen, lossis hluav taws xob rauv. Cov ntaub ntawv cua sov thiab tshuaj ntsuam yuav tsum ua raws li cov tshuaj hlau uas yuav tsum tau ua, manghologe, phosphorus, sulfur, silicon, thiab tooj. Cov hnoos qeev hlau yuav tseem ua rau cov kev ntsuam xyuas Tensile thiab yuav tsum ua raws li yuav tsum muaj nuj nqis ntawm lub zog tensile, paib taw tes, thiab elongation.
ASTM A283 Tshuaj Kho Mob
| Qib A | Qib B | Qib C | Qeb D | |
| Carbon, max | 0.14 | 0.17 | 0.24 | 0.27 |
| Manganese, Max | 0.90 | 0.90 | 0.90 | 0.90 |
| Phosphorus, max | 0.035 | 0.035 | 0.035 | 0.035 |
| Sulphur, Max | 0.04 | 0.04 | 0.04 | 0.04 |
|
Silicon Daim phiaj 1 1 / 2 nyob rau hauv thiab hauv qab, max Daim hlau dhau 1 1 / 2 nyob rau hauv |
0.40 0.15-0.40 | 0.40 0.15-0.40 | 0.40 0.15-0.40 | 0.40 0.15-0.40 |
| Tooj liab min% thaum tooj liab hlau tau teev tseg | 0.20 | 0.20 | 0.20 | 0.20 |
ASTM A283 Cov Khoom Siv Neeg Kho Tshuab
| Qib A | Qib B | Qib C | Qeb D | |
| Lub zog tensile: |
45, 000 -60}, 000 psi [{310 - 415 mpa] |
50, {000 -65, 000 psi [{345 - 450 mpa] |
55, 000 75}, 000 psi [{380 - 515 mpa] |
60, {000 -80, 000 psi [{415 - 550 mpa] |
| Min. Pom tau tias taw tes: |
24,000psi [165 MPa] |
27,000psi [185 MPa] |
30,000psi [205 MPa] |
33 tus [ 230 MPa] |
| Elongation nyob rau hauv 8 ": | 27% min | 25% min | 22% min | 20% min |
| Elongation nyob rau hauv 2 ": | 38% min | 28% min | 25% min | 23% min |
ASTM A283 cov hlau roj carbon yog ib qho alloy ntawm hlau, ntxiv kom faib ua cov roj carbon hlau. Qhov no yog steel specification npog plaub cov qhab nia ntawm cov roj av qis ntawm cov qauv ntawm cov qauv zoo rau cov ntawv thov dav dav. Qib A, B, C thiab D.
