A387 Qib 5 Chav Kawm 2 yog qhov 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.
Cov Khoom Siv Tshuaj Rau ASTM A387 Qib 5 Alloy Steel Phaj
| Element | Chemical Composition (%) | |
| A387 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 |
Mechanical Property
|
Qib |
A387 Gr.5 CL.2Mechanical Property |
|||
|
Thickness |
Yield |
Tensile |
Elongation |
|
|
A387 Gr.5 Cl.2 |
mm |
Min Mpa |
Mpa |
Tsawg% |
|
t Tsawg dua lossis sib npaug li 50 |
310 |
515-690 |
18 |
|
|
50 |
- |
- |
- |
|
daim ntawv thov
1. Lub Nkoj Siab & Boilers
Boiler Cheebtsam:Feem ntau siv rau chav nruas, raj, thiab headers nyob rau hauv fossil roj thiab nuclear fais fab nroj tsuag. Nws tiv taus thermal qaug zog thiab oxidation tso cai rau boilers ua haujlwm ntawm qhov kub txog li 1000℃F (538 degree)rau ncua sij hawm nrog kev saib xyuas tsawg heev.
Fabricated Vessels:Zoo tagnrho rau kev tsim kho ntawm loj - nplai welded siab hlab ntsha. Cov ntsiab lus molybdenum muab lub zog nkag siab, ua kom cov hlab ntsha tuaj yeem tiv taus siab txog 2,175 psitsis muaj structural warping los yog cracking.
2. Kev ua tshuaj lom neeg
Acid tuav:Tshwj xeeb haum rau cov cuab yeej ua cov khoom siv anhydrous sulfuric acidthiab citric acid daws. Nws tuav cov txheej txheem kev ncaj ncees ntawm qhov siab txog li 85%ntawm qhov kub thiab txias li 650℃F (343 degree).
Ib puag ncig hnyav:Siv nyob rau hauv cov tshuaj reactors uas tsis kam mus oxidation thiab siab - cov tshuaj tiv thaiv siab yuav tsum tau tiv thaiv cov cuab yeej tsis ua hauj lwm thiab xyuas kom ntev - kev nyab xeeb.
3. Kev lag luam roj & roj
Kev Pab Cuam:Cov ntsiab lus siab chromium muab qhov tseem ceeb tiv thaiv corrosion los ntawm hydrogen sulfide (
H2Scap H sub 2 cap S
𝐻2𝑆)thiab lwm yam acidic compounds pom nyob rau hauv "qaub" roj thiab roj teb.
Infrastructure:Feem ntau siv nyob rau hauv siab -siab piping systems, flanges, thiab cov yeeb nkab clamps uas hloov cov kua kub thiab cov roj cua ntawm cov txheej txheem sib txawv.
4. Kev tsim hluav taws xob
Kev Tswj Kub Kub:Fabricated rau hauv tshav kub exchangersthiab condenserqhov twg yuav tsum tau ua kom muaj thermal hloov hauv siab -siab qhov chaw.
Advanced Systems:Ua hauj lwm hauv cov cuab yeej tshwj xeeb rau cov chaw nres tsheb hydropower, nuclear reactor siab hlab ntsha, thiab siab -kub ducting rau cov pa tawm.
5. Cov nroj tsuag Petrochemical
Lub nkoj Reactor:Qhov tseem ceeb rau cov tshuaj reactorsuas pib thiab ceev cov kev tshwm sim nyob rau hauv ib puag ncig hnyav. Nws tiv thaiv siab -kub corrosion uas yuav txwv tsis pub lub neej ntawm cov cuab yeej siv.
Cov cuab yeej ua haujlwm:Siv nyob rau hauv cov khoom sib cais, spherical cia tso tsheb hlau luam, thiab cov khoom siv rau cov roj liquefied cia qhov twg cov khoom yuav tsum tiv thaiv ob qho tib si thermal stress thiab ib puag ncig degradation.
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.
ASTM A387 GRADE 5 CLASS 2 khoom yog dab tsi?
ASTM A387 Qib 5 Chav Kawm 2 yog qib siab -chromium zoo-molybdenum (Cr-Mo) alloy steel phaj tsim los rau weldable siab hlab ntsha thiab boilers ua haujlwm ntawm qhov kub siab.
ASTM A387 sib npaug li cas?
Ntawm cov ASTM A387 Qib 22 sib npaug steel qib, SA387 Qib 22, 10CrMo9-10 yog nrov dua li lwm yam sib npaug. SA387 Qib 22 steel yog raws li ASME SA387 / SA387M tus qauv. Kev ua haujlwm tshuaj lom neeg thiab kev ua haujlwm ntawm SA387 Qib 22 steel yuav luag zoo ib yam nrog ASTM A387 Qib 22 steel.