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SAE-AISI A7 Steel vs. N09777 Nickel

SAE-AISI A7 steel belongs to the iron alloys classification, while N09777 nickel belongs to the nickel alloys. They have 45% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 steel and the bottom bar is N09777 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
77
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
580

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1430
1390
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 10
38
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 13
7.4
Embodied Energy, MJ/kg 200
100
Embodied Water, L/kg 100
200

Common Calculations

PREN (Pitting Resistance) 11
30
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29 to 77
20
Strength to Weight: Bending, points 25 to 48
19
Thermal Shock Resistance, points 27 to 72
16

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Carbon (C), % 2.0 to 2.9
0 to 0.030
Chromium (Cr), % 5.0 to 5.8
14 to 19
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 81.4 to 87.7
28.5 to 47.5
Manganese (Mn), % 0 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.4
2.5 to 5.5
Nickel (Ni), % 0 to 0.3
34 to 42
Niobium (Nb), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010
Titanium (Ti), % 0
2.0 to 3.0
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0