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SAE-AISI 8620 Steel vs. ACI-ASTM CF10SMnN Steel

Both SAE-AISI 8620 steel and ACI-ASTM CF10SMnN steel are iron alloys. They have 64% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8620 steel and the bottom bar is ACI-ASTM CF10SMnN steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 210
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 13 to 31
34
Fatigue Strength, MPa 270 to 360
260
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Tensile Strength: Ultimate (UTS), MPa 520 to 690
660
Tensile Strength: Yield (Proof), MPa 360 to 570
330

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 410
900
Melting Completion (Liquidus), °C 1460
1360
Melting Onset (Solidus), °C 1420
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
15
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 1.5
3.1
Embodied Energy, MJ/kg 20
45
Embodied Water, L/kg 50
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 86 to 150
180
Resilience: Unit (Modulus of Resilience), kJ/m3 340 to 880
280
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 18 to 24
24
Strength to Weight: Bending, points 18 to 22
22
Thermal Shock Resistance, points 15 to 20
15

Alloy Composition

Carbon (C), % 0.18 to 0.23
0 to 0.1
Chromium (Cr), % 0.4 to 0.6
16 to 18
Iron (Fe), % 96.9 to 98
59.1 to 65.4
Manganese (Mn), % 0.7 to 0.9
7.0 to 9.0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.4 to 0.7
8.0 to 9.0
Nitrogen (N), % 0
0.080 to 0.18
Phosphorus (P), % 0 to 0.035
0 to 0.060
Silicon (Si), % 0.15 to 0.35
3.5 to 4.5
Sulfur (S), % 0 to 0.040
0 to 0.030