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SAE-AISI H11 Steel vs. SAE-AISI 8660 Steel

Both SAE-AISI H11 steel and SAE-AISI 8660 steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 23 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 H11 steel and the bottom bar is SAE-AISI 8660 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
73
Tensile Strength: Ultimate (UTS), MPa 690 to 1840
660

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 42
39
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 9.5
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 5.5
2.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.5
Embodied Energy, MJ/kg 43
20
Embodied Water, L/kg 75
50

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 66
23
Strength to Weight: Bending, points 22 to 43
21
Thermal Diffusivity, mm2/s 11
10
Thermal Shock Resistance, points 22 to 58
19

Alloy Composition

Carbon (C), % 0.33 to 0.43
0.56 to 0.64
Chromium (Cr), % 4.8 to 5.5
0.4 to 0.6
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 89.6 to 92.5
96.4 to 97.6
Manganese (Mn), % 0.2 to 0.5
0.75 to 1.0
Molybdenum (Mo), % 1.1 to 1.6
0.15 to 0.25
Nickel (Ni), % 0 to 0.3
0.4 to 0.7
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0.8 to 1.2
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0.3 to 0.6
0