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Nickel 625 vs. SAE-AISI A7 Steel

Nickel 625 belongs to the nickel alloys classification, while SAE-AISI A7 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is nickel 625 and the bottom bar is SAE-AISI A7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 79
72
Tensile Strength: Ultimate (UTS), MPa 790 to 910
800 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 330
260
Melting Completion (Liquidus), °C 1350
1470
Melting Onset (Solidus), °C 1290
1430
Specific Heat Capacity, J/kg-K 440
470
Thermal Conductivity, W/m-K 11
37
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 80
10
Density, g/cm3 8.6
7.7
Embodied Carbon, kg CO2/kg material 14
13
Embodied Energy, MJ/kg 190
200
Embodied Water, L/kg 290
100

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 26 to 29
29 to 77
Strength to Weight: Bending, points 22 to 24
25 to 48
Thermal Diffusivity, mm2/s 2.9
10
Thermal Shock Resistance, points 22 to 25
27 to 72

Alloy Composition

Aluminum (Al), % 0 to 0.4
0
Carbon (C), % 0 to 0.1
2.0 to 2.9
Chromium (Cr), % 20 to 23
5.0 to 5.8
Cobalt (Co), % 0 to 1.0
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 0 to 5.0
81.4 to 87.7
Manganese (Mn), % 0 to 0.5
0 to 0.8
Molybdenum (Mo), % 8.0 to 10
0.9 to 1.4
Nickel (Ni), % 58 to 68.9
0 to 0.3
Niobium (Nb), % 3.2 to 4.2
0
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0 to 0.4
0
Tungsten (W), % 0
0.5 to 1.5
Vanadium (V), % 0
3.9 to 5.2

Comparable Variants