ASTM A537 tus qauv hais txog cov phaj siab ntawm lub nkoj, cov khoom siv hauv cov cua sov-kho, carbon-manganese silicon steel. Raws li qhov sib txawv ntawm lub zog thiab kev kho cua sov, nws nyob ntawm chav kawm 1, 2 thiab 3.
ASTM A537 / ASME SA537 phaj cov khoom yog cua sov- kho, carbon-manganese silicon steel. A537 Class 1 phaj yog normalized thiab Class 2 phaj yog quenched thiab tempered. A537 carbon steel phaj muaj zog tensile ntau dua li ASTM A516. A537 phaj feem ntau yog siv hauv Roj & Roj thiab Petrochemical kev lag luam.
ASTM A537 Chav Kawm 1 thiab Chav Kawm 2 steel phaj sib txawv tshwj xeeb hauv lub zog thiab kev kho cua sov, nrog rau Chav Kawm 2 muab cov txiaj ntsig siab dua thiab lub zog tensile vim quenching thiab tempering, ua rau nws tsim nyog rau kev thov, siab - kev siv siab, thaum Chav Kawm 1 (normalized) muab qhov zoo rau cov kev pabcuam dav dav, ua tau raws li cov kev xav tau sib txawv hauv kev tsim cov hlab ntsha. Chav Kawm 2 lub zog muaj zog ntau dua yuav tsum tau tswj xyuas nruj dua, tab sis tso cai rau cov qauv tsim muaj zog dua, qhov chav kawm 1 yog qhov yooj yim dua rau cov qauv txheej txheem.
ASTM A537 Qib 1
ASTM A537 Class 1 carbon steel daim hlau yog tsim los siv rau hauv kev siv lub nkoj siab.
Cov khoom siv yog cov hlau tsis zoo uas tau kho cov cua sov thiab ua rau muaj qhov tshwm sim ntau dua thiab lub zog tensile ntau dua li cov qauv ASTM A516 ntau dua. Cov hlau yog zoo tagnrho rau siv nyob rau hauv cov kev pab cuam pressurized ob leeg nyob rau hauv boilers thiab siab hlab ntsha.
ASTM A537 Qib 2
ASTM A537 Class 2 steel yog cov khoom siv siab dua thiab tensile lub zog siv hauv kev tsim cov hlab ntsha thiab cov boilers steel.
Cov hlau muaj xws li alloying ntawm carbon, manganese thiab silicon thiab kho cua sov siv txoj kev quenched thiab tempered uas muab cov khoom nws residual zog. Tau los ntawm lub ntiaj teb no tus thawj fabricators, ASTM A537 Class 2 yog cov khoom siv dav siv los ntawm kev lag luam roj, roj thiab petrochemical.
Tshuaj muaj pes tsawg leeg ntawm ASTM A537 Class 1 & Class 2
| A537 | C | Si | Mn<40mm | Mn>40 hli | P | S | Cr | Mo | Ni | Cu |
| Chav Kawm 1 | 0.24 | 0.15 - 0.50 | 0.70 - 1.35 | 1.00 - 1.60 | 0.035 | 0.035 | 0.25 | 0.80 | 0.25 | 0.35 |
| Chav kawm 2 | 0.24 | 0.15 - 0.50 | 0.70 - 1.35 | 1.00 - 1.60 | 0.035 | 0.035 | 0.25 | 0.80 | 0.25 | 0.35 |
Mechanical Properties ASTM A537 Chav Kawm 1 & Chav Kawm 2
| Chav Kawm 1 | Chav Kawm 1 | Chav kawm 2 | Chav kawm 2 | Chav kawm 2 | |
| Tawm tswv yim (MPa) | 345 | 310 | 415 | 380 | 315 |
| Tensile (MPa) | 485 - 620 | 450 - 585 | 550 - 690 | 515 - 655 | 485 - 620 |
| Thickness | < 65 | >65 <100 | < 65 | > 65 <1 00 | >100> 150 |
qhov sib txawv tseem ceeb
Kev kho cua sov:
Chav Kawm 1: Normalized (rhuab thiab txias hauv huab cua tseem).
Chav Kawm 2: quenched thiab Tempered (rhuab, txias sai, ces reheated rau ib tug tshwj xeeb kub).
Lub zog (Yield & Tensile):
Chav Kawm 1: Tsawg zog (piv txwv li, 50 ksi min yield, 70 ksi min tensile rau nyias daim hlau).
Chav Kawm 2: Lub zog siab dua (piv txwv li, 60 ksi min yield, 80 ksi min tensile rau daim hlau nyias).
Daim ntawv thov:
Chav Kawm 1: Standard boilers, nruab nrab kub, dav siv lub nkoj siab.
Chav Kawm 2: Siab-siab, qis- kub, lossis ntau qhov chaw xav tau xav tau lub zog ntau dua.
Toughness:
Ob qho tib si muaj kev sib tw zoo, tab sis Chav Kawm 2 txoj kev kho cua sov ua kom muaj zog rau kev pabcuam nyuaj.
