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O2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of O2

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ASTM O2

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This page is mainly introduced the O2 chemical information,mechanical properties, physical properties, mechanical properties, heat treatment, and Micro structure, etc. It also contains the use of O2,such as it is commonly used in bars, sheet,plates, steel coils, steel pipes,forged and other materials application.
Oil-Hardening Tool Steel

Steel Garde:O2
Type:Tool Die Steels
Country:USA
Standard:ASTM
Application:Oil-Hardening Tool Steel

Relevant products:

1Cr12Ni3Mo2VN/J2 Hot Forged Bar

0Cr13Ni8Mo2Al, PH...

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
C	0.85	0.95
Si		0.50
Mn	1.40	1.80
P		0.030
S		0.030
Cr		0.50
Mo		0.30
V		0.30
W
Ni＋Cu		0.75

Mechanical Properties

Tensile strength	223～157	σb/MPa
Yield Strength	376	σ 0.2 ≥/MPa
Elongation	98	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	284～204	-
HRC	30	-

Physical Properties

Thermal expansion	42-37	e-6/K
Thermal conductivity	73-12	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	9454-3791	째C
Density	7398-7854	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)
O2 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