254SMO, X1CrNiMoCuN20-18-7, 1.4547, UNS S31254 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 254SMO, X1CrNiMoCuN20-18-7, 1.4547, UNS S31254

AFNOR 254SMO, X1CrNiMoCuN20-18-7, 1.4547, UNS S31254

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This page is mainly introduced the 254SMO, X1CrNiMoCuN20-18-7, 1.4547, UNS S31254 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of 254SMO, X1CrNiMoCuN20-18-7, 1.4547, UNS S31254,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.

Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel, Stainless steel used in cryogenic, paper, chemical, petrochemical and refining industries, in power plants for heat exchangers, radiators, in aviation construction as aviation steel, screws, valves, heat exchangers, coolers, special tanks, pumps and pipelines.Steel resistant to intergranular corrosion in the sensitized and in the delivery conditions.

  • Steel Garde:254SMO, X1CrNiMoCuN20-18-7, 1.4547, UNS S31254
  • Type:Stainless Steels
  • Country:France
  • Standard:AFNOR
  • Standard Number:
    ITEM Standard Number Descriptions
    1 EN 10028-7 Flat products made of steels for pressure purposes - Part 7: Stainless steels
    2 EN 10088-1 Stainless steels - Part 1: List of stainless steels
    3 EN 10088-2 Stainless steels - Part 2: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for general purposes
    4 EN 10088-3 Stainless steels - Part 3: Technical delivery conditions for semi-finished products, bars, rods, wire, sections and bright products of corrosion resisting steels for general purposes
    5 EN 10088-4 Stainless steels - Part 4: Technical delivery conditions for sheet/plate and strip of corrosion resisting steels for construction purposes
    6 EN 10088-5 Stainless steels - Part 5: Technical delivery conditions for bars, rods, wire, sections and bright products of corrosion resisting steels for construction purposes
    7 EN 10216-5 (2004) Seamless steel tubes for pressure purposes - Technical delivery conditions - Part 5: Stainless steel tubes
    8 EN 10217-7 Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes
    9 EN 10250-4 Open die steel forgings for general engineering purposes - Part 4: Stainless steels
    10 EN 10253-3 Butt-welding pipe fittings - Part 3: Wrought austenitic and austenitic-ferritic (duplex) stainless steels without specific inspection requirements
    11 EN 10253-4 Butt-welding pipe fittings - Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements
    12 EN 10272 Stainless steel bars for pressure purposes
    13 EN 10296-2 (2005) Welded circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel
    14 EN 10297-2 (2005) Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel
  • Metallographic Structure:Austenite
  • Application:Seamless circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.020
Si   0.70
Mn   1.00
P   0.030
S   0.010
Cr 19.50  20.50
Mo 6.00  7.00
Ni 17.50  18.50
N 0.18  0.25
Cu 0.50  1.00

Mechanical Properties

Tensile strength 912~555 σb/MPa
Yield Strength 002 σ 0.2 ≥/MPa
Elongation 01 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 756~611 -
HRC 30 -

Physical Properties

Thermal expansion 91-93 e-6/K
Thermal conductivity 94-81 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8388-5384 째C
Density 9106-6361 kg/m3
Resistivity 0.50-0.60 Ohm.mm2/m
     

Heat Treatment Regime

Annealing

Quenching

Tempering

Normalizing

Q & T

Size Availability

Steel Grade Specification Processing range(mm)
254SMO, X1CrNiMoCuN20-18-7, 1.4547, UNS S31254 Stainless Steels Round Bar and Hollow Bar Φ1 to Φ2000
Square and Flat Steel Φ10 to Φ100
Plate and Sheet 0.08-800(Thickness)*10-1500(Width)*Length
Tube or Pipe OD:Φ4-410; WT:1-35 mm; Lenght:10-12000
Coil and Strip Steel THK:0.1mm Width:1500mm
Forged Ring/Cylindrical/Disk

Technical specification/standard for download

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