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ACI-ASTM CB6 Steel vs. SAE-AISI 5140 Steel

Both ACI-ASTM CB6 steel and SAE-AISI 5140 steel are iron alloys. They have 79% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CB6 steel and the bottom bar is SAE-AISI 5140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 18
12 to 29
Fatigue Strength, MPa 410
220 to 570
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 880
560 to 970
Tensile Strength: Yield (Proof), MPa 660
290 to 840

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 870
420
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 17
45
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
1.4
Embodied Energy, MJ/kg 36
19
Embodied Water, L/kg 130
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
76 to 180
Resilience: Unit (Modulus of Resilience), kJ/m3 1110
220 to 1880
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 32
20 to 34
Strength to Weight: Bending, points 26
19 to 28
Thermal Diffusivity, mm2/s 4.6
12
Thermal Shock Resistance, points 31
16 to 29

Alloy Composition

Carbon (C), % 0 to 0.060
0.38 to 0.43
Chromium (Cr), % 15.5 to 17.5
0.7 to 0.9
Iron (Fe), % 74.4 to 81
97.3 to 98.1
Manganese (Mn), % 0 to 1.0
0.7 to 0.9
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 3.5 to 5.5
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.030
0 to 0.040