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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

Steel Garde:O1
Type:Tool Die Steels
Country:USA
Standard:ASTM
Application:Oil-Hardening Tool Steel

Relevant products:

T30402/X155CrVMo12...

X105CrMo17 Extruded Pipe

D2(Cr12Mo1V1) Hot Rolled Plate

Cross Reference Table(Equivalent Materials):

Material	Standard	Country
X36CrMo17	DIN	Germany
X64CrMo14	DIN	Germany
X6CrMo15-5	DIN	Germany
X220CrVMo12-2	DIN	Germany
X155CrVMo12-1	DIN	Germany
1.2379	DIN	Germany
X165CrCoMo12	DIN	Germany
32NiCrMo12-5	DIN	Germany
A723	AISI	USA

Chemical composition(mass fraction)(wt.%)

Elements	Min.（≥）	Max.（≤）
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	354～883	σb/MPa
Yield Strength	136	σ 0.2 ≥/MPa
Elongation	79	δ5≥(％)
ψ	-	ψ≥(％)
Akv	-	Akv≥/J
HBS	540～755	-
HRC	30	-

Physical Properties

Thermal expansion	83-22	e-6/K
Thermal conductivity	82-70	W/m.K
Specific heat	450-460	J/kg.K
Melting temperature	2196-3033	째C
Density	5789-8934	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