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AISI 1040 Category
Steel
Class
Carbon steel
Type
Standard
Designations
Germany: DIN 1.1186 Japan: JIS S 4O C United Kingdom: B.S. 080 A 40 , B.S. 2 S 93 United States: ASTM A108 , ASTM A29 , ASTM A510 , ASTM A519 , ASTM A546 , ASTM A576 , ASTM A682 , MIL SPEC MIL-S-11310 (CS1040) , SAE J403 , SAE J412 , SAE J414 , UNS G10400
Composition Element
Weight %
C
0.37-0.44
Mn
0.60-0.90
P
0.04 (max)
S
0.05 (max)
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Mechanical Properties Conditions
Properties
T (°C)
Density (×1000 kg/m )
7.845
25
Poisson's Ratio
0.27-0.30
25
Elastic Modulus (GPa)
190-210
25
Tensile Strength (Mpa)
518.8
Yield Strength (Mpa)
353.4
Elongation (%)
30.2
Reduction in Area (%)
57.2
Hardness (HB) Impact Strength (J) (Izod)
3
Treatment
25
annealed at 790°C more
149
25
annealed at 790°C more
44.3
25
annealed at 790°C more
Thermal Properties Conditions
Properties Thermal Expansion (10 /ºC)
T (°C) 13.6
-6
20-1000 more
Treatment annealed
Electric Properties Conditions
Properties Electric Resistivity (10 Ω -m) -9
T (°C) 171
20 more
Treatment