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ACI-ASTM CF20 Steel vs. SAE-AISI H11 Steel

Both ACI-ASTM CF20 steel and SAE-AISI H11 steel are iron alloys. They have 76% 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 ACI-ASTM CF20 steel and the bottom bar is SAE-AISI H11 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
74
Tensile Strength: Ultimate (UTS), MPa 530
690 to 1840

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
42
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
9.5

Otherwise Unclassified Properties

Base Metal Price, % relative 16
5.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.1
3.0
Embodied Energy, MJ/kg 44
43
Embodied Water, L/kg 150
75

Common Calculations

PREN (Pitting Resistance) 20
9.6
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
25 to 66
Strength to Weight: Bending, points 19
22 to 43
Thermal Diffusivity, mm2/s 4.3
11
Thermal Shock Resistance, points 11
22 to 58

Alloy Composition

Carbon (C), % 0 to 0.2
0.33 to 0.43
Chromium (Cr), % 18 to 21
4.8 to 5.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 64.2 to 74
89.6 to 92.5
Manganese (Mn), % 0 to 1.5
0.2 to 0.5
Molybdenum (Mo), % 0
1.1 to 1.6
Nickel (Ni), % 8.0 to 11
0 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 2.0
0.8 to 1.2
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0.3 to 0.6