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A3

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T30102 T30103
#A3

Description

USA ASTM A3 Alloy tool steel and A3 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: A3
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy A3 ASTM USA Alloy tool steel
H26
T20826
H41
T20841
H42
T20842
H43
T20843
A2
T30102

Chemical composition(mass fraction)(wt.%) of the A3

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Mo(％) V(%)
1.20～1.30 0.10～0.50 0.40～0.60 ≤0.030 ≤0.030 4.75～5.50 0.90～1.40 0.80～1.40

Mechanical Properties of steel grade A3

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)
634 (≥) 643 (≥) 13 31 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade A3

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
23 - -     0.23 -  
525 691 - 34.3 333   -  
418 - 24 14.2   214 111

Heat Treatment of steel grade A3

Heat treated : 1262°C - 1785°C

Technological Curves of steel grade A3

Cross Reference Table (Equivalent Grade) of A3

Grade Standard Country Application
A3 ASTM USA Alloy tool steel
A35-586 316F20 AFNOR France Resistant to high boron steel
A35-586 316F21 AFNOR France Resistant to high boron steel
A35-586 316F22 AFNOR France Resistant to high boron steel(NF A 36-580(1983))
A35-586 321F20 AFNOR France Resistant to high boron steel(NF A 36-580(1983))
A35-586 347F20 AFNOR France Resistant to high boron steel(NF A 36-580(1983))
ASTM A335 GRADE P11 ASTM USA Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A335 GRADE P22 ASTM USA Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A335 GRADE P5 ASTM USA Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A335 GRADE P9 ASTM USA Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A335 GRADE P91 ASTM USA Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
ASTM A335 GRADE P92 AMS USA Seamless Ferritic Alloy Steel Pipe for High-Temperature Service
A32 STAS/SR Romania Structural steel
A36 STAS/SR Romania Structural steel
HA3 AS Australia Australia Structural steel
HA300 AS Australia Australia Structural steel
HA300/1 AS Australia Australia Structural steel
HA350 AS Australia Australia Structural steel
A30304 GBT China China structural steel and alloy steel
A30354 GBT China China structural steel and alloy steel
T30102 T30103
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