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400

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250 St34F
#400

Description

Australia AS 400 Australia Structural steel and 400 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 400
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 400 AS Australia Australia Structural steel
K51B60HS
K8660HS
X1112
1137
1144
1146
X1147
1214
12L14
250

Chemical composition(mass fraction)(wt.%) of the 400

C(％) Si(％) P(％) S(％) Other(%)
0.22 0.4 0.04 0.04 Ce 0.39

Mechanical Properties of steel grade 400

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)
639 (≥) 771 (≥) 43 14 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 243

Physical Properties of steel grade 400

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
41 - -     0.24 -  
658 175 - 23.3 111   -  
127 - 43 11.2   234 413

Heat Treatment of steel grade 400

Heat treated : 1414°C - 1678°C

Technological Curves of steel grade 400

Cross Reference Table (Equivalent Grade) of 400

Grade Standard Country Application
UNS S44002 UNS USA Martensitic special steel
UNS S44003 UNS USA Martensitic special steel
UNS S44004 UNS USA Martensitic special steel
UNS S50400 UNS USA Martensitic special steel
UNS S17400 UNS USA precipitation hardening
UNS S17400 UNS USA precipitation hardening
S17400 UNS USA Martensitic special steel
S17400 UNS USA Martensitic special steel
UNS G31400 UNS USA precipitation hardening
UNS H41400 UNS USA precipitation hardening
UNS S64005 UNS USA precipitation hardening
UNS S64006 UNS USA precipitation hardening
1.4003 AFNOR France Ferritic
1.4000 AFNOR France Ferritic
1.4002 AFNOR France Ferritic
1.4006 AFNOR France Martensite And Precipitation Hardening
UNS J94003 AISI USA
UNS J93400 AISI USA
400 AS Australia Australia Structural steel
400L0 AS Australia Australia Structural steel
250 St34F
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Jiangyou Longhai Special Steel Co.,Ltd.

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