SA 387 Gr 5 Cl 1yog chromium-molybdenum alloy steel phaj, teev los ntawm ASME / ASTM cov qauv, tsim rau welded boilers thiab siab hlab ntsha siv nyob rau hauv siab - kub kev pab cuam, muab zoo heev zog thiab corrosion kuj vim nws cov ntsiab lus Cr / Mo, ua rau nws zoo tagnrho rau petrochemical, lub zog tsim, thiab lwm yam tseem ceeb muaj kev siv.
Tensile Requirements rau ASME SA387 Qib 5 Alloy Steel Phaj
| Lub npe: | Yuav tsum tau: | Qib 5 |
|
SA387 Qib 5 |
Tensile zog, ksi [MPA] | 75 txog 100 [515 rau 690] |
| Yield zog, min, ksi [MPa] / (0.2% offset) | 45 [310] | |
| Elongation hauv 8 nti. [200mm], min % | ... | |
| Elongation hauv 2 nti [50mm], min, % | 18 | |
| Txo thaj tsam, min% | 45 ( ntsuas ntawm cov qauv puag ncig) 40 ( ntsuas ntawm cov qauv tiaj tus) |
Cov Khoom Siv Tshuaj Rau ASME SA387 Qib 5 Alloy Steel Phaj
| Element | Chemical Composition (%) | |
| SA 387 Qib 5 | ||
| Cov pa roj carbon: | Kev Ntsuas Kub: | 0.15 max |
| Product Analysis: | 0.15 max | |
| Manganese: | Kev Ntsuas Kub: | 0.30 - 0.60 |
| Product Analysis: | 0.25 - 0.66 | |
| Phosphorus: | Kev Ntsuas Kub: | 0.035 |
| Product Analysis: | 0.035 | |
| Sulfur (max): | Kev Ntsuas Kub: | 0.030 |
| Product Analysis: | 0.030 | |
| Silicon: | Kev Ntsuas Kub: | 0.50 max |
| Product Analysis: | 0.55 max | |
| Chromium: | Kev Ntsuas Kub: | 4.00 - 6.00 |
| Product Analysis: | 3.90 - 6.10 | |
| Molybdenum: | Kev Ntsuas Kub: | 0.45 - 0.65 |
| Product Analysis: | 0.40 - 0.70 |
Daim ntawv thov
Roj & RojCov hlab ntsha siab, kaw lub tso tsheb hlau luam, corrosion{0}} cov kav dej tiv taus rau cov kev pabcuam qaub me me, thiab cov khoom siv tseem ceeb rau cov ntug dej hiav txwv drilling platforms, zoo tagnrho rau hnyav rho tawm thiab kis tau tus mob ib puag ncig.
Petrochemical & TshuajHeavy- cov khoom siv uas yuav tsum tau muaj lub zog siab thiab ruaj khov corrosion kuj ntawm qhov kub siab, nrog rau siab - siab reactors, cua sov- pauv condensers thiab txheej txheem kav dej rau cov tshuaj synthesis.
Lub zog tiamCov khoom siv tseem ceeb xws li cov khoom siv boiler drums, turbine casings, thiab siab -cov khoom siv hluav taws xob hloov pauv tau zoo, txhawb nqa ntev - lub sijhawm ua haujlwm ntawm thermal thiab ua ke - lub voj voog fais fab nroj tsuag.
Tubrog nkojCov khoom siv ruaj khov rau cov dej hiav txwv -cov khoom siv thiab cov nkoj hauv hiav txwv, xws li seawater heat exchangers thiab siab-cov khoom siv lub cev muaj zog, nrog rau kev ua haujlwm zoo rau marine corrosion.
Muaj boilersCov txheej txheem tseem ceeb uas ua rau muaj kev kub ntxhov zoo heev yog qhov tseem ceeb, suav nrog cov phab ntsa ntawm lub qhov cub, lub taub hau lub taub hau thiab lub tshuab hluav taws xob superheater, ua kom muaj kev nyab xeeb thiab ua haujlwm zoo boiler nyob rau hauv siab - qhov kub thiab txias.
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.Dab tsi yog SA 387 GR 5 khoom?
Lub siab zoo chrome molybdenum alloy steel phaj npaj tshwj xeeb rau kev siv hauv weldable carbon steel siab hlab ntsha ntawm qhov kub siab. Ntxiv molybdenum muab cov khoom siv kub tensile zog thiab chromium muab kev txhim kho corrosion.
2.Dab tsi yog qhov txawv ntawm SA 387 Gr 5 Cl 1 thiab Cl 2?
SA 387 Gr 5 Cl 1 thiab Cl 2 sib koom tib yam tshuaj muaj pes tsawg leeg (chromium-} molybdenum) tab sis txawv ntawm lawv cov khoom siv kho tshuab, nrog rau Chav Kawm 2 feem ntau muaj zog tensile ntau dua (75-}100 ksi vs 70-90 ksi) thiab min5 yield zog (min 5 ksik 1 ua, min 4) 2 tsim nyog rau kev thov ntau dua qhov kub siab ntawm lub nkoj siv.