O1 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of O1

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ASTM O1

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This page is mainly introduced the O1 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of O1,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Oil-Hardening Tool Steel

Chemical composition(mass fraction)(wt.%)

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.85  1.00
Si 0.10  0.50
Mn 1.00  1.40
P   0.030
S   0.030
Cr 0.40  0.60
Mo  
V   0.30
W 0.40  0.60
Ni+Cu   0.75

Mechanical Properties

Tensile strength 422~816 σb/MPa
Yield Strength 008 σ 0.2 ≥/MPa
Elongation 66 δ5≥(%)
ψ - ψ≥(%)
Akv - Akv≥/J
HBS 597~221 -
HRC 30 -

Physical Properties

Thermal expansion 92-71 e-6/K
Thermal conductivity 12-60 W/m.K
Specific heat 450-460 J/kg.K
Melting temperature 9696-4909 째C
Density 4172-9476 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)
O1 Tool Die 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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