ASTM A335 GRADE P91 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ASTM A335 GRADE P91

ASTM ASTM A335 GRADE P91

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This page is mainly introduced the ASTM A335 GRADE P91 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of ASTM A335 GRADE P91,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
ASTM A335 GRADE P91
Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
  • Steel Garde:ASTM A335 GRADE P91
  • Type:Special Alloy
  • Country:USA
  • Standard:ASTM
  • Application:Seamless Ferritic Alloy Steel Pipe for High-Temperature Service

Chemical composition(mass fraction)(wt.%)

Mechanical Properties

Tensile strength 175~415 σb/MPa
Yield Strength 468 σ 0.2 ≥/MPa
Elongation 27 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 111~683 -
HRC 30 -

Physical Properties

Thermal expansion 23-75 e-6/K
Thermal conductivity 94-16 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 8324-9179 째C
Density 6342-6912 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)
ASTM A335 GRADE P91 Special Alloy 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