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Description

USA ASTM O1 Alloy tool steel and O1 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: O1
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy O1 ASTM USA Alloy tool steel
T30110
D2
D3
T30403
D4
T30404
D5
T30405
D7
T30407

Chemical composition(mass fraction)(wt.%) of the O1

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) V(%) W(%)
0.85~1.00 0.10~0.50 1.00~1.40 ≤0.030 ≤0.030 0.40~0.60 ≤0.30 0.40~0.60

Mechanical Properties of steel grade O1

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
523 (≥) 994 (≥) 12 24 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade O1

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
33 - -     0.11 -  
936 228 - 42.3 412   -  
347 - 21 22.2   211 114

Heat Treatment of steel grade O1

Heat treated : 1463°C - 1826°C

Technological Curves of steel grade O1

Cross Reference Table (Equivalent Grade) of O1

Grade Standard Country Application
6CrMnSi2Mo1V China Alloy tool steel - Impact resistance tool steel
5Cr3Mn1SiMo1V China Alloy tool steel - Impact resistance tool steel
Cr12Mo1V1 China Alloy tool steel - cold work steels
Cr5Mo1V China Alloy tool steel - cold work steels
SMCr12Mo1V1 China Plastic mould with flat steel
O1 ASTM USA Alloy tool steel
X36CrMo17 DIN Germany Cold working alloy tool steel
X64CrMo14 DIN Germany Cold working alloy tool steel
X6CrMo15-5 DIN Germany Cold working alloy tool steel
X220CrVMo12-2 DIN Germany Cold working alloy tool steel
X155CrVMo12-1 DIN Germany Cold working alloy tool steel
X165CrCoMo12 DIN Germany Cold working alloy tool steel
21CrMo10 DIN Germany Hot working alloy tool steel
28NiMo17 DIN Germany Hot working alloy tool steel
35NiCrMo16 DIN Germany Hot working alloy tool steel
X20CoCrWMo10-9 DIN Germany Hot working alloy tool steel
X20CrMo13 DIN Germany Hot working alloy tool steel
BO1 UK Carbide for cutting tools
BO1 UK Carbide for cutting tools
X200CrMo12-1 AFNOR France Carbide for cutting tools

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