254 SMO / EN 1.4547 / UNS S31254 Khoom siv
SS 254 SMOmuaj cov ntsiab lus siab ntawm chromium, nickel thiab molybdenum, nrog rau me me ntawm nitrogen ntxiv.Alloy 254 SMOyog tsim los rau siv nyob rau hauv hnyav corrosive ib puag ncig, tshwj xeeb tshaj yog muaj daim ntaub ntawv uas muaj zog oxidizing thiab txo cov xov xwm. Thiab cov qauv seamless ntawm 254SMO ua rau nws muaj zog ntau dua li cov kav dej welded. Kev tiv thaiv zoo heev rau pitting thiab crevice corrosion, nrog PREN tus nqi ntau dua 42.ASTM A312 UNS S31254 Yeeb Nkabyog zoo haum rau siv nyob rau hauv kev kub siab, siab kub thiab corrosive ib puag ncig.
DIN 1.4547 Cov khoom siv tshuaj lom neeg
- Nickel (Ni): 17.5-18.5%
- Chromium (Cr): 19.5-20.5%
- Molybdenum (Mo): 6.0-6.5%
- Nitrogen (N): 0 18-0.22%
- Hlau (Fe)
Corrosion Resistance
SS 254 SMO nthuav tawm tsis tshua muaj siab heev rau pitting thiab crevice corrosion nyob rau hauv chloride-muaj xov xwm xws li seawater, nrog PREN qhov tseem ceeb feem ntau ntawm 42-45.
Mechanical Properties
- Alloy 254 SMO mechanical zog yog siab dua li cov qauv austenitic stainless hlau (xws li 304 thiab 316), thiab tuaj yeem tiv taus qhov kev nyuaj siab ib puag ncig.
- Tensile Strength: Ntau dua lossis sib npaug li 650 MPa
- Yield zog: Ntau dua lossis sib npaug li 300 MPa
- Elongation: Ntau dua lossis sib npaug li 35%
PIPE; ASTM A312 Qib 254SMO; SEAMLESS; UNS S31254
| SIZE | PUAS THK | LENGTH mm |
| 1" | SCH 40 S | 6000 |
| 1.5" | SCH 40 S | 6000 |
| 2" | SCH 40 S | 6000 |
| 4" | SCH 40 S | 6000 |
Weldability
Haum rau phau ntawv, arc, TIG thiab MIG vuam, tsis muaj kev kho cua sov yuav tsum tau tom qab vuam kom ruaj khov.
Kub Kub Resistance
Tuav lub zog thiab oxidation tsis kam ntawm qhov kub txog li 600 degree.
Tsawg Thermal Expansion
Nws muaj ib tug tsawg coefficient ntawm thermal expansion
ASTM A312 UNS S31254 Seamless Yeeb Nkab Daim Ntawv Thov:
- 1. Kev ua tshuaj lom neeg
- 2. Offshore Roj thiab Roj
- 3. Pulp thiab ntawv
- 4. Desalination
- 5. Lub zog cog
