ASTM B541 Gold vs. R04295 Alloy

Both ASTM B541 gold and R04295 alloy are otherwise unclassified metals. There are 17 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM B541 gold and the bottom bar is R04295 alloy.

ASTM B541 Gold Electrical Contact Alloy UNS R04295 Niobium-Hafnium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		100

Elongation at Break, %		6.0 to 14
Elongation at Break, %		22

Poisson's Ratio		0.4
Poisson's Ratio		0.38

Shear Modulus, GPa		38
Shear Modulus, GPa		37

Tensile Strength: Ultimate (UTS), MPa		670 to 1180
Tensile Strength: Ultimate (UTS), MPa		410

Tensile Strength: Yield (Proof), MPa		480 to 900
Tensile Strength: Yield (Proof), MPa		300

Thermal Properties

Latent Heat of Fusion, J/g		90
Latent Heat of Fusion, J/g		300

Specific Heat Capacity, J/kg-K		170
Specific Heat Capacity, J/kg-K		260

Thermal Expansion, µm/m-K		13
Thermal Expansion, µm/m-K		7.2

Otherwise Unclassified Properties

Density, g/cm³		17
Density, g/cm³		9.0

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		65 to 91
Resilience: Ultimate (Unit Rupture Work), MJ/m³		84

Resilience: Unit (Modulus of Resilience), kJ/m³		1090 to 3830
Resilience: Unit (Modulus of Resilience), kJ/m³		430

Stiffness to Weight: Axial, points		3.4
Stiffness to Weight: Axial, points		6.3

Stiffness to Weight: Bending, points		9.0
Stiffness to Weight: Bending, points		17

Strength to Weight: Axial, points		11 to 19
Strength to Weight: Axial, points		13

Strength to Weight: Bending, points		9.8 to 14
Strength to Weight: Bending, points		14

Thermal Shock Resistance, points		36 to 63
Thermal Shock Resistance, points		40

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0 to 0.015

Copper (Cu), %		13.5 to 15.5
Copper (Cu), %		0

Gold (Au), %		70.5 to 72.5
Gold (Au), %		0

Hafnium (Hf), %		0
Hafnium (Hf), %		9.0 to 11

Hydrogen (H), %		0
Hydrogen (H), %		0 to 0.0015

Niobium (Nb), %		0
Niobium (Nb), %		85.9 to 90.3

Nitrogen (N), %		0
Nitrogen (N), %		0 to 0.010

Oxygen (O), %		0
Oxygen (O), %		0 to 0.025

Platinum (Pt), %		8.0 to 9.0
Platinum (Pt), %		0

Silver (Ag), %		4.0 to 5.0
Silver (Ag), %		0

Tantalum (Ta), %		0
Tantalum (Ta), %		0 to 0.5

Titanium (Ti), %		0
Titanium (Ti), %		0.7 to 1.3

Tungsten (W), %		0
Tungsten (W), %		0 to 0.5

Zinc (Zn), %		0.7 to 1.3
Zinc (Zn), %		0

Zirconium (Zr), %		0
Zirconium (Zr), %		0 to 0.7

Residuals, %		0 to 0.4
Residuals, %		0