AWS BVAu-7 vs. SAE-AISI O7 Steel

AWS BVAu-7 belongs to the otherwise unclassified metals classification, while SAE-AISI O7 steel belongs to the iron alloys. There are 15 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is AWS BVAu-7 and the bottom bar is SAE-AISI O7 steel.

AWS BVAu-7 (P00507) Vacuum Service Filler Metal SAE-AISI O7 (T31507) Oil-Hardening Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		130
Elastic (Young's, Tensile) Modulus, GPa		190

Poisson's Ratio		0.38
Poisson's Ratio		0.29

Shear Modulus, GPa		45
Shear Modulus, GPa		73

Tensile Strength: Ultimate (UTS), MPa		200
Tensile Strength: Ultimate (UTS), MPa		680 to 2110

Thermal Properties

Latent Heat of Fusion, J/g		140
Latent Heat of Fusion, J/g		250

Melting Completion (Liquidus), °C		1120
Melting Completion (Liquidus), °C		1480

Melting Onset (Solidus), °C		1100
Melting Onset (Solidus), °C		1430

Specific Heat Capacity, J/kg-K		240
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		15
Density, g/cm³		7.9

Common Calculations

Stiffness to Weight: Axial, points		4.7
Stiffness to Weight: Axial, points		13

Stiffness to Weight: Bending, points		11
Stiffness to Weight: Bending, points		24

Strength to Weight: Axial, points		3.7
Strength to Weight: Axial, points		24 to 74

Strength to Weight: Bending, points		5.1
Strength to Weight: Bending, points		22 to 46

Thermal Shock Resistance, points		8.9
Thermal Shock Resistance, points		23 to 70

Alloy Composition

Cadmium (Cd), %		0 to 0.0010
Cadmium (Cd), %		0

Carbon (C), %		0 to 0.0050
Carbon (C), %		1.1 to 1.3

Chromium (Cr), %		0
Chromium (Cr), %		0.35 to 0.85

Cobalt (Co), %		0 to 0.060
Cobalt (Co), %		0

Copper (Cu), %		0
Copper (Cu), %		0 to 0.25

Gold (Au), %		49.5 to 50.5
Gold (Au), %		0

Iron (Fe), %		0
Iron (Fe), %		92.9 to 97.6

Lead (Pb), %		0 to 0.0020
Lead (Pb), %		0

Manganese (Mn), %		0
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 0.3

Nickel (Ni), %		24.5 to 25.5
Nickel (Ni), %		0 to 0.3

Palladium (Pd), %		23.9 to 26
Palladium (Pd), %		0

Phosphorus (P), %		0 to 0.0020
Phosphorus (P), %		0 to 0.030

Silicon (Si), %		0
Silicon (Si), %		0 to 0.6

Sulfur (S), %		0
Sulfur (S), %		0 to 0.030

Tungsten (W), %		0
Tungsten (W), %		1.0 to 2.0

Vanadium (V), %		0
Vanadium (V), %		0 to 0.4

Zinc (Zn), %		0 to 0.0010
Zinc (Zn), %		0