C66900 Brass vs. R60705 Alloy

C66900 brass belongs to the copper alloys classification, while R60705 alloy belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is C66900 brass and the bottom bar is R60705 alloy.

UNS C66900 Manganese Brass UNS R60705 Zirconium-Niobium Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		98

Elongation at Break, %		1.1 to 26
Elongation at Break, %		18

Poisson's Ratio		0.32
Poisson's Ratio		0.34

Shear Modulus, GPa		45
Shear Modulus, GPa		37

Tensile Strength: Ultimate (UTS), MPa		460 to 770
Tensile Strength: Ultimate (UTS), MPa		540

Tensile Strength: Yield (Proof), MPa		330 to 760
Tensile Strength: Yield (Proof), MPa		430

Thermal Properties

Latent Heat of Fusion, J/g		190
Latent Heat of Fusion, J/g		250

Specific Heat Capacity, J/kg-K		400
Specific Heat Capacity, J/kg-K		270

Thermal Expansion, µm/m-K		20
Thermal Expansion, µm/m-K		6.3

Otherwise Unclassified Properties

Density, g/cm³		8.2
Density, g/cm³		6.7

Embodied Water, L/kg		310
Embodied Water, L/kg		450

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m³		4.6 to 200
Resilience: Ultimate (Unit Rupture Work), MJ/m³		90

Resilience: Unit (Modulus of Resilience), kJ/m³		460 to 2450
Resilience: Unit (Modulus of Resilience), kJ/m³		950

Stiffness to Weight: Axial, points		8.1
Stiffness to Weight: Axial, points		8.1

Stiffness to Weight: Bending, points		20
Stiffness to Weight: Bending, points		23

Strength to Weight: Axial, points		15 to 26
Strength to Weight: Axial, points		22

Strength to Weight: Bending, points		16 to 23
Strength to Weight: Bending, points		22

Thermal Shock Resistance, points		14 to 23
Thermal Shock Resistance, points		63

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0 to 0.050

Chromium (Cr), %		0
Chromium (Cr), %		0 to 0.2

Copper (Cu), %		62.5 to 64.5
Copper (Cu), %		0

Hafnium (Hf), %		0
Hafnium (Hf), %		0 to 4.5

Hydrogen (H), %		0
Hydrogen (H), %		0 to 0.0050

Iron (Fe), %		0 to 0.25
Iron (Fe), %		0 to 0.2

Lead (Pb), %		0 to 0.050
Lead (Pb), %		0

Manganese (Mn), %		11.5 to 12.5
Manganese (Mn), %		0

Niobium (Nb), %		0
Niobium (Nb), %		2.0 to 3.0

Nitrogen (N), %		0
Nitrogen (N), %		0 to 0.025

Oxygen (O), %		0
Oxygen (O), %		0 to 0.18

Zinc (Zn), %		22.5 to 26
Zinc (Zn), %		0

Zirconium (Zr), %		0
Zirconium (Zr), %		91 to 98

Residuals, %		0 to 0.2
Residuals, %		0