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 715~669 σb/MPa
Yield Strength 553 σ 0.2 ≥/MPa
Elongation 90 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 647~846 -
HRC 30 -

Physical Properties

Thermal expansion 92-22 e-6/K
Thermal conductivity 42-34 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 4415-6766 째C
Density 5229-2630 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