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SAE-AISI M4 Steel vs. AWS BVAu-7

SAE-AISI M4 steel belongs to the iron alloys classification, while AWS BVAu-7 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.

For each property being compared, the top bar is SAE-AISI M4 steel and the bottom bar is AWS BVAu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
130
Poisson's Ratio 0.29
0.38
Shear Modulus, GPa 76
45
Tensile Strength: Ultimate (UTS), MPa 770 to 2150
200

Thermal Properties

Latent Heat of Fusion, J/g 260
140
Melting Completion (Liquidus), °C 1610
1120
Melting Onset (Solidus), °C 1560
1100
Specific Heat Capacity, J/kg-K 440
240
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Density, g/cm3 8.3
15

Common Calculations

Stiffness to Weight: Axial, points 13
4.7
Stiffness to Weight: Bending, points 23
11
Strength to Weight: Axial, points 26 to 72
3.7
Strength to Weight: Bending, points 23 to 45
5.1
Thermal Shock Resistance, points 24 to 68
8.9

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 1.3 to 1.4
0 to 0.0050
Chromium (Cr), % 3.8 to 4.8
0
Cobalt (Co), % 0
0 to 0.060
Copper (Cu), % 0 to 0.25
0
Gold (Au), % 0
49.5 to 50.5
Iron (Fe), % 75.9 to 81.4
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0.15 to 0.4
0
Molybdenum (Mo), % 4.3 to 5.5
0
Nickel (Ni), % 0 to 0.3
24.5 to 25.5
Palladium (Pd), % 0
23.9 to 26
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), % 5.3 to 6.5
0
Vanadium (V), % 3.8 to 4.5
0
Zinc (Zn), % 0
0 to 0.0010