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38 C 4

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France AFNOR NF 38C4 Quenched and tempered steels - Part 1: technical delivery conditions for specials steels and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 38C4 / 38 C 4
Category Grade Standard Region/Area Standard Content
Metals 38 C 4 NF A35-552-1 France Quenched and tempered steels - Part 1: technical delivery conditions for specials steels

Chemical composition(mass fraction)(wt.%) of the 38 C 4

Element Min Max Similar
Si - 0.3500 -
S - 0.0300 -
P - 0.0300 -
Mn 0.6000 0.9000 -
Fe - - -
Cu - 0.3000 -
Cr 0.9000 1.2000 -
C 0.3500 0.4000 -
Al 0.0200 - -
Si 0.1000 0.4000 -
S - 0.0350 -
P - 0.0350 -
Mn 0.6000 0.9000 -
Cr 0.9000 1.2000 -
C 0.3500 0.4000 -

Mechanical Properties of steel grade 38 C 4

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)
992 (≥) 796 (≥) 11 32 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 324

Physical Properties of steel grade 38 C 4

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
21 - -     0.32 -  
785 762 - 12.3 442   -  
558 - 32 21.2   112 232

Heat Treatment of steel grade 38 C 4

Heat treated : 1522°C - 1285°C

Technological Curves of steel grade 38 C 4

Cross Reference Table (Equivalent Grade) of 38 C 4

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.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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