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SAE-AISI 1140 Steel vs. SAE-AISI H42 Steel

Both SAE-AISI 1140 steel and SAE-AISI H42 steel are iron alloys. They have 82% of their average alloy composition in common. There are 21 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1140 steel and the bottom bar is SAE-AISI H42 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
77
Tensile Strength: Ultimate (UTS), MPa 600 to 700
700 to 1980

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Melting Completion (Liquidus), °C 1460
1620
Melting Onset (Solidus), °C 1420
1570
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 51
24
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
24
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 1.4
8.8
Embodied Energy, MJ/kg 18
130
Embodied Water, L/kg 46
98

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 21 to 25
23 to 65
Strength to Weight: Bending, points 20 to 22
21 to 42
Thermal Diffusivity, mm2/s 14
6.5
Thermal Shock Resistance, points 18 to 21
20 to 57

Alloy Composition

Carbon (C), % 0.37 to 0.44
0.55 to 0.7
Chromium (Cr), % 0
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 98.4 to 98.9
79.3 to 83.8
Manganese (Mn), % 0.7 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 0
4.5 to 5.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Sulfur (S), % 0.080 to 0.13
0 to 0.030
Tungsten (W), % 0
5.5 to 6.8
Vanadium (V), % 0
1.8 to 2.2