A 829 4340 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 829 4340

SAE A 829 4340

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This page is mainly introduced the A 829 4340 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 829 4340,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Alloy Structural Steel Plates

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.01
Si   0.20
Mn   0.30
P  
S  
Ni   0.15
Cr 28.00  30.00
Al  
Cu   0.15
Ti  
Fe  
N   0.02
Mo 3.50  4.20

Mechanical Properties

Tensile strength 939~919 σb/MPa
Yield Strength 841 σ 0.2 ≥/MPa
Elongation 60 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 747~771 -
HRC 30 -

Physical Properties

Thermal expansion 08-46 e-6/K
Thermal conductivity 91-33 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 6013-3341 째C
Density 5145-6296 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 829 4340 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