1. ASTM A671 CJH115 Chav Kawm 10 yog dab tsi?
Ib qho specification rauhluav taws xob-fusion-welded steel yeeb nkabtsim rauqis-kev pabcuam kub(hauv qab-50 ° F / -46 ° C).
CJH115: Carbon steel nrog3.5% npib tsib xeerau txhim kho cryogenic toughness.
Chav Kawm 10: Hydrostatic xeem siab ntawm10,000 psi (69 MPa).
2. Cov ntawv thov tseem ceeb?
Siv nyob rau hauv nruab nrab ntawm qhov chaw cryogenic:
LNG auxiliary piping systems
Tshuaj ua cov nroj tsuag
tub yees infrastructure
Cov kav dej txias cia
3. Kev tsim khoom xav tau?
Ob -welded tsim(sab hauv / sab nraud welds)
100% radiographic kuaj
Charpy V-kev ntsuas ntsuas ntawm -50℃F
Normalized kho cua sov
4. Mechanical Properties?
Tensile zog: Ntau dua lossis sib npaug rau 65 ksi (448 MPa)
Yield zog: Ntau dua lossis sib npaug rau 40 ksi (276 MPa)
Elongation: Ntau dua lossis sib npaug li 22%
Impact toughness: 20 ft -lb yam tsawg kawg nkaus ntawm qhov ntsuas kub
5. Nws piv rau CJF115 cov kav dej li cas?
Cov ntsiab lus nickel siab dua(3.5% vs 2.25% hauv CJF115)
Kev ntsuas qis qis(Class 10 vs Chav Kawm 50+)
Zoo dua qis - kev ua haujlwm kubntau dua cov qib tsis yog -nickel
Tus nqi ntau dua - zoorau nruab nrab siv cryogenic
