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SAE-AISI H42 Steel vs. ACI-ASTM CD3MWCuN Steel

Both SAE-AISI H42 steel and ACI-ASTM CD3MWCuN steel are iron alloys. They have 70% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H42 steel and the bottom bar is ACI-ASTM CD3MWCuN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 700 to 1980
790

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1620
1460
Melting Onset (Solidus), °C 1570
1410
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 24
16
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
22
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.8
4.2
Embodied Energy, MJ/kg 130
58
Embodied Water, L/kg 98
180

Common Calculations

PREN (Pitting Resistance) 31
42
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 23 to 65
28
Strength to Weight: Bending, points 21 to 42
24
Thermal Diffusivity, mm2/s 6.5
4.2
Thermal Shock Resistance, points 20 to 57
22

Alloy Composition

Carbon (C), % 0.55 to 0.7
0 to 0.030
Chromium (Cr), % 3.8 to 4.5
24 to 26
Copper (Cu), % 0 to 0.25
0.5 to 1.0
Iron (Fe), % 79.3 to 83.8
56.6 to 65.3
Manganese (Mn), % 0.15 to 0.4
0 to 1.5
Molybdenum (Mo), % 4.5 to 5.5
3.0 to 4.0
Nickel (Ni), % 0 to 0.3
6.5 to 8.5
Nitrogen (N), % 0
0.2 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 5.5 to 6.8
0.5 to 1.0
Vanadium (V), % 1.8 to 2.2
0