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ACI-ASTM CN7M Steel vs. SAE-AISI H24 Steel

Both ACI-ASTM CN7M steel and SAE-AISI H24 steel are iron alloys. They have 47% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CN7M steel and the bottom bar is SAE-AISI H24 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
78
Tensile Strength: Ultimate (UTS), MPa 480
720 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 310
240
Melting Completion (Liquidus), °C 1410
1750
Melting Onset (Solidus), °C 1450
1700
Specific Heat Capacity, J/kg-K 470
420
Thermal Conductivity, W/m-K 21
27
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 32
37
Density, g/cm3 8.1
9.1
Embodied Carbon, kg CO2/kg material 5.6
6.1
Embodied Energy, MJ/kg 78
93
Embodied Water, L/kg 210
78

Common Calculations

PREN (Pitting Resistance) 29
28
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 17
22 to 61
Strength to Weight: Bending, points 17
20 to 39
Thermal Diffusivity, mm2/s 5.6
6.9
Thermal Shock Resistance, points 12
22 to 61

Alloy Composition

Carbon (C), % 0 to 0.070
0.42 to 0.53
Chromium (Cr), % 19 to 22
2.5 to 3.5
Copper (Cu), % 3.0 to 4.0
0 to 0.25
Iron (Fe), % 37.4 to 48.5
78 to 82.4
Manganese (Mn), % 0 to 1.5
0.15 to 0.4
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 27.5 to 30.5
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.5
0.15 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0
0.4 to 0.6