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SAE-AISI H14 Steel vs. ACI-ASTM CF8M Steel

Both SAE-AISI H14 steel and ACI-ASTM CF8M steel are iron alloys. They have 72% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI H14 steel and the bottom bar is ACI-ASTM CF8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 75
78
Tensile Strength: Ultimate (UTS), MPa 710 to 2030
540

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1530
1440
Melting Onset (Solidus), °C 1490
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 35
16
Thermal Expansion, µm/m-K 11
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 10
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
19
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 2.7
3.8
Embodied Energy, MJ/kg 39
53
Embodied Water, L/kg 73
160

Common Calculations

PREN (Pitting Resistance) 13
28
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 69
19
Strength to Weight: Bending, points 22 to 44
19
Thermal Diffusivity, mm2/s 9.3
4.3
Thermal Shock Resistance, points 24 to 68
12

Alloy Composition

Carbon (C), % 0.35 to 0.45
0 to 0.080
Chromium (Cr), % 4.8 to 5.5
18 to 21
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 86.5 to 89.9
60.3 to 71
Manganese (Mn), % 0.2 to 0.5
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 0 to 0.3
9.0 to 12
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.8 to 1.2
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 4.0 to 5.3
0