A 541 Class 8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 541 Class 8

SAE A 541 Class 8

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This page is mainly introduced the A 541 Class 8 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 541 Class 8,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Quenched and Tempered Carbon and Alloy Steel Forgings for Pressure Vessel Components

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.20
Si   0.50
Mn   1.00
P  
S  
Ni  
Cr   12.50
Al  
Cu  
Ti  
Fe   remaining
N  
Mo  
W   3.00

Mechanical Properties

Tensile strength 573~948 σb/MPa
Yield Strength 298 σ 0.2 ≥/MPa
Elongation 61 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 977~670 -
HRC 30 -

Physical Properties

Thermal expansion 71-69 e-6/K
Thermal conductivity 85-32 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 9258-9647 째C
Density 7844-3920 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)
A 541 Class 8 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