1. UNS K31545 yog dab tsi?
UNS K31545yog lub npe rau ib qho tshwj xeebCarbon-Molybdenum (C-Mo) alloy hlau. Nws yog feem ntau paub los ntawm nwsASTM A335 qibnpe.
Qhov feem ntau sib npaug thiab ncaj qha yog: ASTM A335 Qib P2
Qhov no txhais tau tias "K31545 Seamless Steel Pipe" yog ib qhoASTM A335 Gr. P2 Seamless Yeeb Nkab.
2. Cov yam ntxwv tseem ceeb ntawm ASTM A335 Gr. P2 / UNS K31545
Cov khoom no yog tsim los rau siab -kev pabcuam kub.
Hom:Ferritic Alloy hlau (Seamless)
Qhov tseem ceeb Alloying Element: Molybdenum (hli)
Molybdenum cov ntsiab lus yog feem ntau0.44% - 0.65%.
Molybdenum tsub kom lub zog ntawm cov hlau, tshwj xeeb tshaj yog thaum kub siab. Nws kuj tseem txhim khu kev tiv thaiv corrosion thiab pitting.
Common Standard: ASTM A335 / A335M- Txheem Specification rau Seamless Ferritic Alloy-Steel Pipe rau High-Tsev Kev Pabcuam.
3. Chemical Composition (Nyob - xa mus rau ASTM A335 kom paub meej)
Cov tshuaj muaj pes tsawg leeg yog qhov laj thawj tseem ceeb rau nws qhov kev ua haujlwm siab - kub.
| Lub ntsiab | Cov ntsiab lus (%) |
|---|---|
| Cov pa roj carbon (C) | 0.10 - 0.20 |
| Manganese (Mn) | 0.30 - 0.61 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
| Silicon (Si) | 0.10 - 0.30 |
| Molybdenum (hli) | 0.44 - 0.65 |
4. Mechanical Properties (Tswj - xa mus rau ASTM A335 kom paub meej)
Cov khoom raug muab rau cov khoom siv hauv qhov kev kho cua sov zoo li qub.
| Khoom | Tus nqi |
|---|---|
| Tensile zog | 380 MPa (55 ksi) min |
| Yield zog | 205 MPa (30 ksi) min |
| Elongation | Nws txawv nrog phab ntsa thickness, tab sis feem ntau> 30% |
5. Kev siv ntau
Vim nws lub zog zoo thiab oxidation tsis kam ntawm qhov kub nruab nrab, K31545 / A335 P2 kav tau dav siv hauv:
Fais fab nroj tsuag:Siab -kub thiab siab - cov kab hluav taws xob siab, cov raj boiler, thiab cov kab hluav taws xob superheater.
Petrochemical Kev Lag Luam:Cov txheej txheem piping nyob rau hauv refineries thiab tshuaj nroj tsuag uas kub siab.
Roj & Roj:Rau cov kav dej uas xav tau lub zog ntau dua li cov pa roj carbon steel tab sis tsis yog tus nqi siab ntawm chromium alloys.
Pressure Vessel Piping:Rau kev sib txuas siab - qhov kub thiab txias Cheebtsam.
6. Qhov zoo ntawm kev siv K31545 / A335 P2 yeeb nkab
Siab -Tsub Muaj Zog:Tuav nws lub zog txhua yam zoo dua li cov pa roj carbon steel ntawm qhov kub siab tshaj 425℃(800℃F).
Creep Resistance:Resistant qeeb, mus tas li deformation (creep) uas tuaj yeem tshwm sim hauv kev ntxhov siab ntawm qhov kub thiab txias.
Weldability:Nws muaj qhov zoo weldability, tab sis nws feem ntau yuav tsum tau ua ntej - cua sov thiab tom qab -weld heat treatment (PWHT) los tiv thaiv kev tawg thiab kho cov khoom siv kho tshuab.
Tus nqi -zoo:Nws yog kev lag luam ntau dua li siab dua -qib chrome-moly alloys (xws li P5, P9, P11, P22) rau cov ntawv thov nyob rau hauv nws qhov kub thiab txias txwv.
Cov ntsiab lus
Thaum ib tug thov rau ibK31545 Seamless Steel Yeeb Nkab, lawv yeej tseem ceeb thov ibseamless, qis- alloy steel yeeb nkab nrog molybdenum ntxiv, tsim rau siab - kub thiab siab - kev pabcuam siab, feem ntau conformingASTM A335 Qib P2.
Nco ntsoov lees paub qhov tseeb ASTM / ASME specification (piv txwv li, A335) thiab qib (P2) nrog koj tus neeg muag khoom kom ntseeg tau tias nws ua tau raws li qhov tshwj xeeb ntawm koj qhov project.
