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4J78

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China YB 4J78 无磁定膨胀瓷封镍基合金 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 4J78 / 4J78
Category Grade Standard Region/Area Standard Content
Metals 4J78 YB/T 5233 China 无磁定膨胀瓷封镍基合金

Chemical composition(mass fraction)(wt.%) of the 4J78

Element Min Max Similar
Ni - - -
Cu - 1.5000 -
Mo 20.0000 22.0000 -
Si - 0.3000 -
Mn - 0.4000 -
S - 0.0200 -
P - 0.0200 -
C - 0.0500 -

Mechanical Properties of steel grade 4J78

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)
994 (≥) 177 (≥) 31 12 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 114

Physical Properties of steel grade 4J78

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
44 - -     0.13 -  
674 525 - 44.3 234   -  
252 - 14 23.2   232 222

Heat Treatment of steel grade 4J78

Heat treated : 1183°C - 1295°C

Technological Curves of steel grade 4J78

Cross Reference Table (Equivalent Grade) of 4J78

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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Jiangyou Longhai Special Steel Co.,Ltd.

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