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 008~992 σb/MPa
Yield Strength 643 σ 0.2 ≥/MPa
Elongation 90 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 427~040 -
HRC 30 -

Physical Properties

Thermal expansion 45-75 e-6/K
Thermal conductivity 18-29 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3879-2726 째C
Density 2609-1261 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