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SAE-AISI A7 Steel vs. Grade CW6M Nickel

SAE-AISI A7 steel belongs to the iron alloys classification, while grade CW6M nickel belongs to the nickel alloys. There are 19 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 A7 steel and the bottom bar is grade CW6M nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
84
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
560

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Melting Completion (Liquidus), °C 1470
1530
Melting Onset (Solidus), °C 1430
1470
Specific Heat Capacity, J/kg-K 470
430
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
65
Density, g/cm3 7.7
8.8
Embodied Carbon, kg CO2/kg material 13
13
Embodied Energy, MJ/kg 200
170
Embodied Water, L/kg 100
300

Common Calculations

Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 29 to 77
18
Strength to Weight: Bending, points 25 to 48
17
Thermal Shock Resistance, points 27 to 72
16

Alloy Composition

Carbon (C), % 2.0 to 2.9
0 to 0.070
Chromium (Cr), % 5.0 to 5.8
17 to 20
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 87.7
0 to 3.0
Manganese (Mn), % 0 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.4
17 to 20
Nickel (Ni), % 0 to 0.3
54.9 to 66
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0