Astm A537 Class 2 Steel Phajyog tsim los nrog cov tshuaj muaj pes tsawg leeg ntawm carbon, silicon, manganese, phosphorus sulfur, chromium, molybdenum, npib tsib xee, thiab tooj liab. CovAstm A537 Chav Kawm 2 Khoomyog tempered thiab quenched los muab lawv txhim khu lub zog thiab zoo heev kam rau ua nyob rau hauv kev ntxhov siab -induced systems.
Tshuaj muaj pes tsawg leeg ntawm ASTM A537 Chav Kawm 2
|
Element |
Kev sib xyaw (%) |
|---|---|
|
Cov pa roj carbon (C) |
0.24 max |
|
Manganese (Mn) |
0.70-1.35 (≤40mm thickness) 1.00-1.60 (>40 hli thickness) |
|
Phosphorus (P) |
0.035 max |
|
Sulfur (S) |
0.035 max |
|
Silicon (Si) |
0.15-0.50 |
|
Copper (Cu) |
0.35 max (yog tias muaj) |
|
Nickel (Ni) |
0.25 max (yog tias muaj) |
|
Chromium (Cr) |
0.25 max (yog tias muaj) |
|
Molybdenum (hli) |
0.08 max (yog tias muaj) |
Mechanical Properties ntawm ASTM A537 Chav Kawm 2
|
Khoom |
Tus nqi |
|---|---|
|
Tensile zog |
80-100 ksi (550-690 MPa) |
|
Yield zog |
60 ksi (415 MPa) min (≤65mm) 55 ksi (380 MPa) min (>65-100mm) 46 ksi (315 MPa) min (>100-150 hli) |
|
Elongation (hauv 50mm) |
22% min (≤100mm) 20% min (>100 hli) |
|
Kev txo qis hauv cheeb tsam |
Tsis tau teev tseg, feem ntau siab |
Daim ntawv thov:
LNG cia tanks thiab cryogenic thauj nkoj.
Offshore platforms thiab Arctic pipelines.
Siab -siab reactors nyob rau hauv cov roj refineries.
Tag nrho cov specification thiab cov ntsiab lus muaj nyob rau ntawm kev thov. Cov ntaub ntawv saum toj no yog muab rau kev taw qhia nkaus xwb. Rau kev tsim tshwj xeeb thov hu rau peb cov neeg ua haujlwm muag khoom.
1. Cov khoom siv ASTM A537 Class 2 yog dab tsi?
ASTM A537 Chav Kawm 2 yog quenched thiab tempered carbon -manganese- silicon steel phaj rau siab hlab ntsha thiab boilers, muab siab yield zog (60 ksi min) thiab tensile (80 - 100 ksi). Nws yog cua sov-kho kom muaj zog zoo dua nyob rau hauv siab -siab, qis-kub, los yog qaub qhov chaw pabcuam, raws li NACE thaum kuaj. Sib npaug rau ASME SA537 Chav Kawm 2, nws tau siv rau hauv kev thov cov ntawv thov xws li reactors thiab tso tsheb hlau luam, tso cai rau cov qauv tsim kom zoo dua rau cov nqi.
2.Dab tsi yog qhov txawv ntawm A537 Class 1 thiab Class 2?
A537 Chav Kawm 1 yog normalized (yield 50 ksi min), haum rau cov kev pabcuam txheem nrog weldability zoo. A537 Chav Kawm 2 yog quenched thiab tempered (tso tawm 60 ksi min), muab lub zog ntau dua rau cov kev kub ntxhov lossis kub, nrog kev cuam tshuam zoo dua. Chav Kawm 2 yuav tsum tau ua tib zoo vuam kom tsis txhob tawg vim qhov nyuaj, tab sis nws txo cov khoom thickness, txuag nqi.astm a537 class 2 mechanical properties overviewqhia nws ntug hauv daim ntawv thov roj qaub.
3.Cov ntawv thov twg haum A537 Class 2 daim hlau?
A537 Chav Kawm 2 haum rau siab - kev ntxhov siab siv hauv roj / roj (cov kua qaub cais), petrochemicals (reactors), thiab lub zog (steam boilers). Nws yog qhov zoo tagnrho rau cov tso tsheb hlau luam cryogenic lossis cov hlab ntsha hauv qab kev thauj khoom, nrog HIC tsis kam rau cov kua dej corrosive. Offshore platforms thiab heat exchangers tau txais txiaj ntsig los ntawm nws qhov toughness. Tsis zoo li Chav Kawm 1, nws nyiam qhov kub siab txog li 600 degree, ncua kev ua neej nyob hauv cov xwm txheej hnyav.
4.s A537 Chav Kawm 2 sib npaug rau SA537 Chav Kawm 2?
Yog lawm, A537 Chav Kawm 2 yog sib npaug rau ASME SA537 Chav Kawm 2, nrog cov muaj pes tsawg leeg zoo tib yam (carbon 0.24% max) thiab cov khoom (tso tawm 60 ksi min). ASTM A537 yog cov khoom siv spec, thaum SA537 ua kom ASME cov cai ua raws li Tshooj VIII. Kev sib npaug thoob ntiaj teb suav nrog EN P460NH thiab JIS SPV490; txheeb xyuas qhov project.