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SAE-AISI A3 Steel vs. Grade M30H Nickel

SAE-AISI A3 steel belongs to the iron alloys classification, while grade M30H nickel belongs to the nickel alloys. There are 23 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 A3 steel and the bottom bar is grade M30H nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
160
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
61
Tensile Strength: Ultimate (UTS), MPa 700 to 2150
770

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1450
1250
Melting Onset (Solidus), °C 1410
1200
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 37
22
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.3
3.3
Electrical Conductivity: Equal Weight (Specific), % IACS 9.7
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 6.0
50
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 4.4
7.7
Embodied Energy, MJ/kg 67
110
Embodied Water, L/kg 78
250

Common Calculations

Stiffness to Weight: Axial, points 14
10
Stiffness to Weight: Bending, points 25
21
Strength to Weight: Axial, points 25 to 77
25
Strength to Weight: Bending, points 23 to 48
22
Thermal Diffusivity, mm2/s 10
5.7
Thermal Shock Resistance, points 23 to 70
27

Alloy Composition

Carbon (C), % 1.2 to 1.3
0 to 0.3
Chromium (Cr), % 4.8 to 5.5
0
Copper (Cu), % 0 to 0.25
27 to 33
Iron (Fe), % 88.7 to 92
0 to 3.5
Manganese (Mn), % 0.4 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.9 to 1.4
0
Nickel (Ni), % 0 to 0.3
57.9 to 70.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
2.7 to 3.7
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.8 to 1.4
0