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ACI-ASTM CF20 Steel vs. SAE-AISI 6150 Steel

Both ACI-ASTM CF20 steel and SAE-AISI 6150 steel are iron alloys. They have 71% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 6150 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
200 to 350
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 50
15 to 23
Fatigue Strength, MPa 240
300 to 750
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 530
630 to 1200
Tensile Strength: Yield (Proof), MPa 250
420 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 970
420
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
46
Thermal Expansion, µm/m-K 17
12 to 13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 16
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.1
2.0
Embodied Energy, MJ/kg 44
28
Embodied Water, L/kg 150
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
130 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 160
460 to 3590
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
22 to 43
Strength to Weight: Bending, points 19
21 to 32
Thermal Diffusivity, mm2/s 4.3
13
Thermal Shock Resistance, points 11
20 to 38

Alloy Composition

Carbon (C), % 0 to 0.2
0.48 to 0.53
Chromium (Cr), % 18 to 21
0.8 to 1.1
Iron (Fe), % 64.2 to 74
96.7 to 97.7
Manganese (Mn), % 0 to 1.5
0.7 to 0.9
Nickel (Ni), % 8.0 to 11
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 2.0
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.040
Vanadium (V), % 0
0.15 to 0.3