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SAE-AISI M6 Steel vs. AWS BNi-8

SAE-AISI M6 steel belongs to the iron alloys classification, while AWS BNi-8 belongs to the nickel alloys. There are 19 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI M6 steel and the bottom bar is AWS BNi-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
180
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 77
67
Tensile Strength: Ultimate (UTS), MPa 840 to 2210
570

Thermal Properties

Latent Heat of Fusion, J/g 260
390
Melting Completion (Liquidus), °C 1560
1010
Melting Onset (Solidus), °C 1510
980
Specific Heat Capacity, J/kg-K 440
480
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
46
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 8.0
8.2
Embodied Energy, MJ/kg 120
120
Embodied Water, L/kg 160
220

Common Calculations

Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 28 to 73
20
Strength to Weight: Bending, points 24 to 45
19
Thermal Shock Resistance, points 26 to 68
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0.75 to 0.85
0 to 0.060
Chromium (Cr), % 3.8 to 4.5
0
Cobalt (Co), % 11 to 13
0 to 0.1
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 68.8 to 74.6
0
Manganese (Mn), % 0.15 to 0.4
21.5 to 24.5
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0
61.6 to 68.5
Phosphorus (P), % 0 to 0.030
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0.2 to 0.45
6.0 to 8.0
Sulfur (S), % 0 to 0.030
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 3.8 to 4.8
0
Vanadium (V), % 1.3 to 1.7
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5