1. ASTM A671 CJH115 Chav Kawm 12 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 superior cryogenic toughness.
Chav Kawm 12: Hydrostatic xeem siab ntawm12,000 psi (83 MPa).
Txhim kho qhov tseem ceeb: 9% siab dua qhov ntsuas vs. Chav kawm 11 (12k vs. 11k psi).
2. Nws feem ntau siv rau qhov twg?
Zoo tagnrho rau:
LNG terminal thib ob piping
Cryogenic twj tso kua mis headers
Industrial tub yees tshuab
Kev thauj tshuaj lom neeg hauv cov huab cua txias
3. Cov qauv kev tsim khoom yog dab tsi?
Ob -welded seamsnrog 100% radiographic tshuaj xyuas.
Charpy V-kev ntsuas ntsuasntawm-50 ° F / -46 ° C(min. 20 ft-lb cuam tshuam lub zog).
Normalized kho cua sovrau uniform grain qauv.
Hardness tswj: Tsawg dua los yog sib npaug li 200 HBW los tiv thaiv vuam tawg.
4. Mechanical zog?
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% (kom paub meej tias qhov ductility nyob rau hauv thermal stress).
Impact toughness: Verified ntawm-46 degreeRaws li ASTM A370.
5. Nws piv rau cov qib zoo sib xws li cas?
| Feature | CJH115 Class 12 | CJF115 Class 12 |
|---|---|---|
| Nickel | 3.5% | 2.25% |
| Temp | -46 degree | -60 degree |
| Nqi | Siab dua | qis |
| Siv Case | Nruab nrab cryogenics | Cryogenic siab heev |
