ASTM A387 Qib 22 Chav Kawm 2 yog chromium-molybdenum (Cr-Mo) alloy steel phaj rau siab- kub, siab- kev siv siab xws li boilers thiab siab hlab ntsha, muab superior toughness (Class 2) thiab zoo heev corrosion/oxidation kuj, muaj nyob rau hauv roj, roj, thiab tshuaj industries rau reactors, heat exchangers, thiab Nws yog ib txwm muab cov normalized thiab tempered, kom ntseeg tau lub zog ntawm siab kub thiab zoo low -kub tej yam toughness, nrog rau cov tshuaj muaj pes tsawg leeg.
Cov Khoom Siv Tshuaj Rau ASTM A387 Qib 22 Alloy Steel Phaj
| Element | Chemical Composition (%) | |
| A387 Qib 22 | ||
| Cov pa roj carbon: | Kev Ntsuas Kub: | 0.05 - 0.15 |
| Product Analysis: | 0.04 - 0.15 | |
| 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: | 0.035 |
| Product Analysis: | 0.035 | |
| Silicon: | Kev Ntsuas Kub: | 0.50 max |
| Product Analysis: | 0.50 max | |
| Chromium: | Kev Ntsuas Kub: | 2.00 - 2.50 |
| Product Analysis: | 1.88 - 2.62 | |
| Molybdenum: | Kev Ntsuas Kub: | 0.90 - 1.10 |
| Product Analysis: | 0.85 - 1.15 |
Mechanical Property
|
A387 Gr.22 CL.2Mechanical Property |
||||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
A387 Gr.22 Cl.2 |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
t Tsawg dua lossis sib npaug li 50 |
310 |
515-690 |
18 |
|
|
50<> |
- |
- |
- |
|
Daim ntawv thov
Roj & Roj:Cov hlab ntsha siab, cov kav dej, thiab cov khoom siv hauv cov chaw ua dej thiab cov kev pabcuam qaub (H2S ib puag ncig).
Petrochemical Kev Lag Luam:Reactors, piping, thiab hlab ntsha nyob rau hauv chemical processing plant.
Kev tsim hluav taws xob:Boilers, heat recovery steam generators (HRSG), turbines, thiab high -temperature ducting.
Lwm yam:Thaum tshav kub kub exchangers, cov hlab ntsha siab, thiab cov khoom siv hauv kev xav tau ib puag ncig.
Qhov zoo
Kev Ua Haujlwm Kub Kub:Tsim kom muaj qhov kub thiab txias, tiv thaiv kev nkag thiab tswj lub zog.
Corrosion & Oxidation Resistance:Chromium thiab molybdenum cov ntsiab lus muab kev tiv thaiv zoo rau oxidation thiab corrosive media, nrog rau cov roj qaub.
Superior Strength:Ntau zog tensile thiab tawm los piv rau cov pa roj carbon steels, haum rau siab - kev siv kev ntxhov siab.
Zoo Weldability:Nws tuaj yeem yooj yim welded, tseem ceeb heev rau fabricating complex hlab ntsha.
Versatility:Muaj nyob rau hauv ntau yam thicknesses thiab cov ntaub ntawv, raws li nruj kev lag luam qauv.
Thov kev tshaj lij rau ASTM A387 Qib 22 Chav Kawm 2 los ntawm GNEE Steel.
Dab tsi yog qhov txawv ntawm ASTM A387 Qib 22 Chav Kawm 2 thiab Chav Kawm 1?
Qhov tseem ceeb sib txawv ntawm ob yog nyob rau hauv cov cuab yeej cuab tam thiab cov txheej txheem kho cua sov. Chav Kawm 2 yuav tsum muaj zog tensile ntau dua, lub zog tawm los, thiab cuam tshuam rau lub zog, thiab feem ntau raug rau normalizing + tempering tshav kub kho kom ntseeg tau cov qauv ruaj khov ntawm cov khoom nyob rau hauv qhov kub thiab txias. Hauv qhov sib piv, Chav Kawm 1 muaj qhov ntsuas cov cuab yeej cuab yeej qis dua, thiab nws cov txheej txheem kho cua sov tuaj yeem hloov kho raws li qhov xav tau tiag tiag, nrog rau cov ntawv thov uas tsis tshua muaj hnyav dua li cov chav kawm 2.
Dab tsi ntawm cov hlau yog ASTM A387 Qib 22 Chav Kawm 2, thiab nws cov ntsiab lus alloying yog dab tsi?
ASTM A387 Qib 22 Chav Kawm 2 yog chromium-molybdenum alloy tshav kub-resistant steel phaj, belongs rau qeb ntawm qis- alloy siab- lub zog steel. Nws cov ntsiab lus alloying suav nrog kwv yees li 2.25% chromium (Cr) thiab 1.0% molybdenum (Mo), ntxiv los ntawm cov ntsiab lus tseem ceeb xws li carbon, manganese, thiab silicon. Qhov sib piv alloy endows nws nrog zoo heev -kub txhua yam khoom thiab corrosion kuj.