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ACI-ASTM CF8M Steel vs. SAE-AISI H24 Steel

Both ACI-ASTM CF8M steel and SAE-AISI H24 steel are iron alloys. They have 69% 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 CF8M 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 78
78
Tensile Strength: Ultimate (UTS), MPa 540
720 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 300
240
Melting Completion (Liquidus), °C 1440
1750
Melting Onset (Solidus), °C 1400
1700
Specific Heat Capacity, J/kg-K 480
420
Thermal Conductivity, W/m-K 16
27
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 19
37
Density, g/cm3 7.8
9.1
Embodied Carbon, kg CO2/kg material 3.8
6.1
Embodied Energy, MJ/kg 53
93
Embodied Water, L/kg 160
78

Common Calculations

PREN (Pitting Resistance) 28
28
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 19
22 to 61
Strength to Weight: Bending, points 19
20 to 39
Thermal Diffusivity, mm2/s 4.3
6.9
Thermal Shock Resistance, points 12
22 to 61

Alloy Composition

Carbon (C), % 0 to 0.080
0.42 to 0.53
Chromium (Cr), % 18 to 21
2.5 to 3.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 60.3 to 71
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), % 9.0 to 12
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
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