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A439 Type D-2B

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America ASTM A439TypeD-2B 奥氏体可锻铸铁铸件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A439TypeD-2B / A439 Type D-2B
Category Grade Standard Region/Area Standard Content
Metals A439 Type D-2B ASTM A439 America 奥氏体可锻铸铁铸件

Chemical composition(mass fraction)(wt.%) of the A439 Type D-2B

Element Min Max Similar
Si 1.5000 3.0000 -
P - 0.0800 -
Ni 18.0000 22.0000 -
Mn 0.7000 1.2500 -
Cr 2.7500 4.0000 -
C - 3.0000 -

Mechanical Properties of steel grade A439 Type D-2B

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)
775 (≥) 987 (≥) 12 13 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 331

Physical Properties of steel grade A439 Type D-2B

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
24 - -     0.34 -  
191 345 - 21.3 224   -  
295 - 44 32.2   242 233

Heat Treatment of steel grade A439 Type D-2B

Heat treated : 1373°C - 1654°C

Technological Curves of steel grade A439 Type D-2B

Cross Reference Table (Equivalent Grade) of A439 Type D-2B

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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