ASTM ASME SB 473 Alloy 20 UNS N08020 Bar

ASTM / ASME SB 473 Alloy 20 (UNS N08020) yog cov nickel-hlau-chromium alloy nrog ntxiv ntawm tooj liab thiab molybdenum. Nws yog feem ntau hu ua Alloy 20 thiab muaj npe nrov rau nws qhov tshwj xeeb corrosion kuj nyob rau hauv ntau qhov chaw. Nov yog cov ncauj lus kom ntxaws txog nws cov specifications, khoom, thiab kev siv:

Qib npe:

DIN: 2.4660

JIS:wb 08020

EN:NiCr20CuMo

ASME:SIB 473

Elemental Composition:

Nickel (Ni): 32-38%

Chromium (Cr): 19-21%

Hlau (Fe):Tshuav

Copper (Cu): 3-4%

Molybdenum (Molybdenum): 2-3%

Niobium (Nb):8xC min, 1.0 max

Cov pa roj carbon (C):0.07% max

Manganese (Mn):2.0% max

Silicon (Si):1.0% max

Sulfur (S):0.035% max

Phosphorus (P):0.045% max

Mechanical Properties (Tsev muaj nuj nqis):

Tensile zog:80 ksi (551 MPa) yam tsawg kawg nkaus

Yield Strength (0.2% offset):35 ksi (241 MPa) yam tsawg kawg nkaus

Elongation:30% yam tsawg kawg nkaus

Hardness (Brinell):217 max

Daim Ntawv Thov Ntau:

Alloy 20 pom kev siv dav hauv kev lag luam xws li kev ua tshuaj lom neeg, tshuaj, khoom noj khoom haus, thiab lwm yam, qhov twg corrosion kuj tiv thaiv sulfuric acid, pitting, crevice corrosion, thiab intergranular corrosion yuav tsum tau. Cov ntawv thov uas muaj xws li:

Cov cuab yeej siv tshuaj (reactors, heat exchangers, tank cia)

Cov khoom siv tshuaj thiab khoom noj khoom haus

Piping systems thiab li qub

Cov khoom siv tswj cov pa phem

Thaum tshav kub kub exchangers thiab condensers

Petrochemical kev lag luam Cheebtsam

Common Q&A:

Puas yog Alloy 20 haum rau siv nyob rau hauv ib puag ncig sulfuric acid?

Yog lawm, Alloy 20 muaj kev tiv thaiv zoo heev rau sulfuric acid, ua rau nws haum rau siv nyob rau hauv ib puag ncig uas cov corrosive acid tam sim no.

Alloy 20 puas tuaj yeem welded?

Yog lawm, Alloy 20 tuaj yeem welded siv cov txheej txheem vuam zoo. Nws yog ib qho tseem ceeb uas yuav tsum tau siv cov hlau muab tub lim sib haum nrog Alloy 20 kom tswj nws cov khoom tiv thaiv corrosion.

Cov kev txwv ntawm Alloy 20 yog dab tsi?

Thaum Alloy 20 muaj kev tiv thaiv corrosion zoo heev, nws yuav tsis tsim nyog siv rau hauv qhov chaw txo qis lossis ib puag ncig uas muaj cov oxidizing muaj zog xws li nitric acid.

Puas yog Alloy 20 kim dua piv rau stainless hlau?

Yog lawm, Alloy 20 feem ntau kim dua cov qauv stainless hlau vim nws cov ntsiab lus nickel thiab molybdenum. Txawm li cas los xij, nws qhov kev tiv thaiv corrosion zoo tshaj plaws ua rau tus nqi siab dua hauv ntau daim ntawv thov.

Alloy 20 puas tuaj yeem siv rau hauv cov ntawv thov kub?

Alloy 20 nthuav tawm cov khoom siv kho tshuab zoo ntawm qhov kub siab thiab tuaj yeem siv rau hauv cov ntawv thov kub. Txawm li cas los xij, nws qhov kev ua tau zoo yuav tsis zoo dua li qee qhov kub-kub alloys xws li Inconel lossis Hastelloy nyob rau hauv huab cua.

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