A 646 Grade Marage 300 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 646 Grade Marage 300

SAE A 646 Grade Marage 300

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This page is mainly introduced the A 646 Grade Marage 300 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of A 646 Grade Marage 300,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
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Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C   0.03
Si   0.10
Mn   0.10
Ni   18.50
Cr  
Al   0.10
Cu  
Ti   0.60
Fe  
Mo   5.00
Co   9.00

Mechanical Properties

Tensile strength 924~742 σb/MPa
Yield Strength 156 σ 0.2 ≥/MPa
Elongation 09 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 969~781 -
HRC 30 -

Physical Properties

Thermal expansion 16-93 e-6/K
Thermal conductivity 10-21 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 5644-0535 째C
Density 4499-2613 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 646 Grade Marage 300 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

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