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SAE-AISI M2 Steel vs. AWS BVAu-8

SAE-AISI M2 steel belongs to the iron alloys classification, while AWS BVAu-8 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is SAE-AISI M2 steel and the bottom bar is AWS BVAu-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
100
Poisson's Ratio 0.29
0.42
Shear Modulus, GPa 77
36
Tensile Strength: Ultimate (UTS), MPa 760 to 2150
140

Thermal Properties

Latent Heat of Fusion, J/g 260
71
Melting Completion (Liquidus), °C 1610
1240
Melting Onset (Solidus), °C 1570
1200
Specific Heat Capacity, J/kg-K 440
140
Thermal Expansion, µm/m-K 10
14

Otherwise Unclassified Properties

Density, g/cm3 8.4
19

Common Calculations

Stiffness to Weight: Axial, points 13
3.0
Stiffness to Weight: Bending, points 23
8.3
Strength to Weight: Axial, points 25 to 71
2.1
Strength to Weight: Bending, points 22 to 44
3.2
Thermal Shock Resistance, points 27 to 76
7.1

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0.78 to 1.1
0 to 0.0050
Chromium (Cr), % 3.8 to 4.5
0
Copper (Cu), % 0 to 0.25
0
Gold (Au), % 0
91 to 93
Iron (Fe), % 78.5 to 83.4
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.5 to 5.5
0
Nickel (Ni), % 0 to 0.3
0
Palladium (Pd), % 0
7.0 to 9.0
Phosphorus (P), % 0 to 0.030
0 to 0.0020
Silicon (Si), % 0.2 to 0.45
0
Sulfur (S), % 0 to 0.030
0
Tungsten (W), % 5.5 to 6.8
0
Vanadium (V), % 1.8 to 2.2
0
Zinc (Zn), % 0
0 to 0.0010