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SFCM 740 R

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Japan JIS SFCM740R 鉻鉬鋼鍛鋼件 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SFCM740R / SFCM 740 R
Category Grade Standard Region/Area Standard Content
Metals SFCM 740 R JIS G3221 Japan 鉻鉬鋼鍛鋼件

Chemical composition(mass fraction)(wt.%) of the SFCM 740 R

Element Min Max Similar
Si 0.1500 0.3500 -
S - 0.0300 -
P - 0.0300 -
Mo 0.1500 0.3000 -
Mn 0.3000 0.8500 -
Cu - 0.3000 -
Cr 0.9000 1.5000 -
C - 0.4800 -

Mechanical Properties of steel grade SFCM 740 R

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)
955 (≥) 923 (≥) 14 14 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade SFCM 740 R

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
13 - -     0.33 -  
213 936 - 34.3 112   -  
864 - 14 24.2   344 142

Heat Treatment of steel grade SFCM 740 R

Heat treated : 1327°C - 1311°C

Technological Curves of steel grade SFCM 740 R

Cross Reference Table (Equivalent Grade) of SFCM 740 R

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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