A 307 Grade A chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 307 Grade A

SAE A 307 Grade A

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This page is mainly introduced the A 307 Grade A chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 307 Grade A,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Carbon Steel Bolts and Studs, 60 000 PSI Tensile Strength

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.15
Si   1.00
Mn 3.75  4.75
P   0.045
S   0.03
Ni 9.00  10.50
Cr 19.00  22.00
Al  
Cu  
Ti  
Fe  
N  
Mo  
V  

Mechanical Properties

Tensile strength 487~561 σb/MPa
Yield Strength 458 σ 0.2 ≥/MPa
Elongation 70 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 302~188 -
HRC 30 -

Physical Properties

Thermal expansion 50-70 e-6/K
Thermal conductivity 91-11 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 3819-5607 째C
Density 6235-1441 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 307 Grade A 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