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A890 Grade 4A

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America ASTM A890Grade4A 普通应用的铁铬镍钼耐腐蚀双重(奥氏体/铁素体)铸件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: A890Grade4A / A890 Grade 4A
Category Grade Standard Region/Area Standard Content
Metals A890 Grade 4A ASTM A890/A890M America 普通应用的铁铬镍钼耐腐蚀双重(奥氏体/铁素体)铸件

Chemical composition(mass fraction)(wt.%) of the A890 Grade 4A

Element Min Max Similar
C - 0.0300 -
Mn - 1.5000 -
P - 0.0400 -
S - 0.0200 -
Si - 1.0000 -
Ni 4.5000 6.5000 -
Cr 21.0000 23.5000 -
Mo 2.5000 3.5000 -
Cu - 1.0000 -
N 0.1000 0.3000 -
Si - 1.0000 -
S - 0.0200 -
P - 0.0400 -
Ni 4.5000 6.5000 -
N 0.1000 0.3000 -
Mo 2.5000 3.5000 -
Mn - 1.5000 -
Cu - 1.0000 -
Cr 21.0000 23.5000 -
C - 0.0300 -

Mechanical Properties of steel grade A890 Grade 4A

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)
611 (≥) 531 (≥) 34 24 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade A890 Grade 4A

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
14 - -     0.43 -  
166 749 - 43.3 443   -  
678 - 24 23.2   324 243

Heat Treatment of steel grade A890 Grade 4A

Heat treated : 1168°C - 1125°C

Technological Curves of steel grade A890 Grade 4A

Cross Reference Table (Equivalent Grade) of A890 Grade 4A

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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