Vertex Alloy
Industrial metal background

254 SMO Stub End (UNS S31254 / EN 1.4547)

Легированная СтальДругие
254smo

Обзор

254 SMO stub end is a pipe fitting made from 254 SMO, a high-alloy super-austenitic stainless steel (also known as 6Mo super-austenitic). It is designed for use with lap joint flanges in piping systems requiring exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in severe chloride environments.

Описание (Английский)

254 SMO stub end is a pipe fitting made from 254 SMO, a high-alloy super-austenitic stainless steel (also known as 6Mo super-austenitic). It is designed for use with lap joint flanges in piping systems requiring exceptional resistance to pitting, crevice corrosion, and stress corrosion cracking in severe chloride environments.

Диапазон Размеров

  • 1/2" (DN15) – 24" (DN600)

Спецификация Марки

СистемаЗначение
🇺🇸 UNSS31254
ASTM / ASMEA182 F44 (forgings), A312 TP31254 (pipe), A403 WP31254 (fittings)
🇪🇺 EN1.4547 (X1CrNiMoCuN20-18-7)
🇪🇺 EN1.4547
🇯🇵 JISSUS31254
🇨🇳 GB015Cr21Ni26Mo5Cu2 (S31254)

Химический Состав

ЭлементЗначение
C≤ 0.020
Si≤ 0.80
Mn≤ 1.00
P≤ 0.030
S≤ 0.010
Cr19.5 – 20.5
Ni17.5 – 18.5
Mo6.0 – 6.5
Cu0.50 – 1.00
N0.18 – 0.22
FeBalance

Механические Свойства

productCenter.propertyЗначение
Tensile Strength Rm≥ 650 MPa
Yield Strength Rp0.2≥ 300 MPa
Elongation A (50mm)≥ 35%
Reduction in Area-
Hardness≤ 210 HB
Impact KV2 (room temp)-

Физические Свойства

СвойствоЕдиницаЗначение
Densityg/cm³8.00 g/cm³
Melting Point Range°C1,320 – 1,390 °C
Modulus of ElasticityGPa195 GPa
Shear Modulus-74 GPa
Poisson's Ratio-0.30
Thermal Conductivity (20°C)W/m·K14 W/(m·K)
CTE (20–100°C)-16.5 ppm/°C
Specific Heat (20°C)J/kg·K0.50 kJ/(kg·K)
Electrical Resistivity (20°C)μΩ·cm0.85 μΩ·m
Magnetism-Non-magnetic (fully austenitic)

Применение

  • Seawater Systems
  • Oil & Gas / Offshore
  • Chemical Processing
  • Power Generation
  • Desalination
  • Pulp & Paper
  • Pharmaceutical
  • Food / Beverage
  • Marine