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SAE-AISI 9254 Steel vs. AWS BVAu-4

SAE-AISI 9254 steel belongs to the iron alloys classification, while AWS BVAu-4 belongs to the otherwise unclassified metals. There are 15 material properties with values for both materials. Properties with values for just one material (17, 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 9254 steel and the bottom bar is AWS BVAu-4.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 72
41
Tensile Strength: Ultimate (UTS), MPa 660
190

Thermal Properties

Latent Heat of Fusion, J/g 270
100
Melting Completion (Liquidus), °C 1440
950
Melting Onset (Solidus), °C 1400
950
Specific Heat Capacity, J/kg-K 480
190
Thermal Expansion, µm/m-K 13
14

Otherwise Unclassified Properties

Density, g/cm3 7.7
17

Common Calculations

Stiffness to Weight: Axial, points 13
3.6
Stiffness to Weight: Bending, points 25
9.3
Strength to Weight: Axial, points 24
3.0
Strength to Weight: Bending, points 22
4.2
Thermal Shock Resistance, points 20
8.7

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0.51 to 0.59
0 to 0.0050
Chromium (Cr), % 0.6 to 0.8
0
Gold (Au), % 0
81.5 to 82.5
Iron (Fe), % 96.1 to 97.1
0
Lead (Pb), % 0
0 to 0.0020
Manganese (Mn), % 0.6 to 0.8
0
Nickel (Ni), % 0
17.5 to 18.5
Phosphorus (P), % 0 to 0.035
0 to 0.0020
Silicon (Si), % 1.2 to 1.6
0
Sulfur (S), % 0 to 0.040
0
Zinc (Zn), % 0
0 to 0.0010