SA387 Qib 11 Chav Kawm 1yog ib qho chromium-molybdenum (Cr-}Mo) alloy steel phaj rau siab-kub siab cov hlab ntsha thiab boilers, muab zoo heev - kub lub zog, oxidation, thiab corrosion kuj, tshwj xeeb tshaj yog nyob rau hauv qaub roj (H2S) ib puag ncig, vim nws ~ 1.25% Cr thiab ~ 0.5% tensi 0.5% Mos cov ntsiab lus zoo li, zog.
Sib npaug
| BS | EN | ASTM / ASME | DIN |
| 621 B | ––– | SA387-11-1 | ––– |
Specifications rau ASME SA387 Qib 11 Alloy Steel Phaj
Chromium & Molybdenum cov ntsiab lus (raws li ASME specification)
| Lub npe | Nominal Chromium Cov ntsiab lus (%) |
Nominal Molybdenum Cov ntsiab lus (%) |
| SA387 Qib 11 | 1.25% | 0.50% |
Tensile Requirements rau ASME SA387 Qib 11 Alloy Steel Phaj Chav Kawm 1 Phaj
| Lub npe: | Yuav tsum tau: | Qib 11 |
| SA387 Qib 11 | Tensile zog, ksi [MPa] | 75 txog 100 [515 rau 690] |
| Yield zog, min, ksi [MPa] / (0.2% offset) | 43 [310] | |
| Elongation hauv 8 nti. [200mm], min % | 18 | |
| Elongation hauv 2 nti [50mm], min, % | 22 | |
| Txo thaj tsam, min% | ––– |
Cov Khoom Siv Tshuaj Rau ASME SA387 Qib 11 Alloy Steel Phaj
| Element | Chemical Composition (%) | |
| SA387 Qib 11 | ||
| Cov pa roj carbon: | Kev Ntsuas Kub: | 0.05 - 0.17 |
| Product Analysis: | 0.04 - 0.17 | |
| Manganese: | Kev Ntsuas Kub: | 0.40 - 0.65 |
| Product Analysis: | 0.35 - 0.73 | |
| Phosphorus: | Kev Ntsuas Kub: | 0.035 |
| Product Analysis: | 0.035 | |
| Sulfur (max): | Kev Ntsuas Kub: | 0.035 |
| Product Analysis: | 0.035 | |
| Silicon: | Kev Ntsuas Kub: | 0.50 - 0.80 |
| Product Analysis: | 0.44 - 0.86 | |
| Chromium: | Kev Ntsuas Kub: | 1.00 - 1.50 |
| Product Analysis: | 0.94 - 1.56 | |
| Molybdenum: | Kev Ntsuas Kub: | 0.45 - 0.65 |
| Product Analysis: | 0.45 - 0.70 |
Daim ntawv thov
Roj & Roj Kev Lag Luam: Siv rau cov khoom siv hauv cov roj refineries, cov chaw ua roj, thiab cov tank cia tuav cov kua kub thiab roj.
Petrochemical Facilities: Zoo tagnrho rau cov cua kub exchangers thiab cov hlab ntsha siab hauv kev ua tshuaj lom neeg uas muaj qhov kub thiab txias.
Kev tsim hluav taws xob: Siv hauv boilers thiab lwm yam khoom siv thermal uas yuav tsum tau ua kom ntev - lub sij hawm muaj kev ruaj ntseg ntawm qhov kub siab.
Sour Service Environments: Nws cov ntsiab lus chromium muaj kev tiv thaiv zoo heev rau corrosion thiab hydrogen nres, ua rau nws haum rau "qaub" (hydrogen sulfide- muaj) cov ntawv thov roj.
Tiv tauj peb ntawm beam@gneesteelgroup.com rau tus nqi, kev txhawb nqa, lossis kev daws teeb meem. Peb yeej ib txwm npaj los txhawb koj qhov project.
1.Qhov kub ntawm SA 387 GR 11 yog dab tsi?
Nyob rau hauv qis kawg ntawm qhov kub ntawm SA 387 Gr 11 (1150 ° F min tempering kub), thiab SA 387 Gr 22 (1250 ° F min tempering kub) yog siv. Cov qib no tuaj yeem teev nyob rau hauv chav kawm 1 lossis 2 thiab tseem tuaj yeem muab rau hauv Normalized & Tempered lossis Quenched thiab Tempered.
2.Dab tsi yog qhov ntsuas kub ntawm SA387 Qib 11 chav kawm 1?
SA387 Qib 11 Chav Kawm 1 steel yog tsim los rau qhov kub thiab txias, nrog rau qhov kev pabcuam kub xws li qis- qhov kub thiab txias (feem ntau cuam tshuam rau -52℃lossis qis dua) mus txog qhov muaj peev xwm ntau pua degrees Celsius, tab sis nws qhov tseem ceeb siab - qhov kub ntawm daim ntawv thov ntau yam yog txwv los ntawm kev tso cai rau 7℃siab, nrog rau kev siv ntau tshaj 70℃tsim, txawm tias nws muaj kev tiv thaiv oxidation ntawm qhov kub thiab txias. Nws yog siv rau hauv cov nroj tsuag fais fab, refineries, thiab cov nroj tsuag tshuaj rau cov kev pabcuam kub kub, xav tau kev kho cua sov tshwj xeeb xws li normalizing thiab tempering.