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SAE-AISI A7 Steel vs. Grade CW6MC Nickel

SAE-AISI A7 steel belongs to the iron alloys classification, while grade CW6MC nickel belongs to the nickel alloys. There are 21 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 CW6MC nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
79
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
540

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Melting Completion (Liquidus), °C 1470
1480
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 37
11
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 10
80
Density, g/cm3 7.7
8.6
Embodied Carbon, kg CO2/kg material 13
14
Embodied Energy, MJ/kg 200
200
Embodied Water, L/kg 100
290

Common Calculations

Stiffness to Weight: Axial, points 13
13
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 Diffusivity, mm2/s 10
2.8
Thermal Shock Resistance, points 27 to 72
15

Alloy Composition

Carbon (C), % 2.0 to 2.9
0 to 0.060
Chromium (Cr), % 5.0 to 5.8
20 to 23
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 87.7
0 to 5.0
Manganese (Mn), % 0 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.4
8.0 to 10
Nickel (Ni), % 0 to 0.3
55.4 to 68.9
Niobium (Nb), % 0
3.2 to 4.5
Phosphorus (P), % 0 to 0.030
0 to 0.015
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