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SAE-AISI M4 Steel vs. Nickel 625

SAE-AISI M4 steel belongs to the iron alloys classification, while nickel 625 belongs to the nickel 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 SAE-AISI M4 steel and the bottom bar is nickel 625.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
790 to 910

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Melting Completion (Liquidus), °C 1610
1350
Melting Onset (Solidus), °C 1560
1290
Specific Heat Capacity, J/kg-K 440
440
Thermal Conductivity, W/m-K 25
11
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
80
Density, g/cm3 8.3
8.6
Embodied Carbon, kg CO2/kg material 14
14
Embodied Energy, MJ/kg 210
190
Embodied Water, L/kg 110
290

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 23
23
Strength to Weight: Axial, points 26 to 72
26 to 29
Strength to Weight: Bending, points 23 to 45
22 to 24
Thermal Diffusivity, mm2/s 6.9
2.9
Thermal Shock Resistance, points 24 to 68
22 to 25

Alloy Composition

Aluminum (Al), % 0
0 to 0.4
Carbon (C), % 1.3 to 1.4
0 to 0.1
Chromium (Cr), % 3.8 to 4.8
20 to 23
Cobalt (Co), % 0
0 to 1.0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 75.9 to 81.4
0 to 5.0
Manganese (Mn), % 0.15 to 0.4
0 to 0.5
Molybdenum (Mo), % 4.3 to 5.5
8.0 to 10
Nickel (Ni), % 0 to 0.3
58 to 68.9
Niobium (Nb), % 0
3.2 to 4.2
Phosphorus (P), % 0 to 0.030
0 to 0.015
Silicon (Si), % 0.2 to 0.45
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0 to 0.4
Tungsten (W), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0

Comparable Variants