C99750 Brass vs. ASTM B617 Coin Silver

C99750 brass belongs to the copper alloys classification, while ASTM B617 coin silver belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is C99750 brass and the bottom bar is ASTM B617 coin silver.

UNS C99750 Manganese White Brass ASTM B617 Coin Silver Electrical Contact Alloy

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		130
Elastic (Young's, Tensile) Modulus, GPa		75

Elongation at Break, %		20 to 30
Elongation at Break, %		1.1 to 22

Poisson's Ratio		0.32
Poisson's Ratio		0.37

Shear Modulus, GPa		48
Shear Modulus, GPa		28

Tensile Strength: Ultimate (UTS), MPa		450 to 520
Tensile Strength: Ultimate (UTS), MPa		290 to 520

Thermal Properties

Latent Heat of Fusion, J/g		200
Latent Heat of Fusion, J/g		120

Melting Completion (Liquidus), °C		840
Melting Completion (Liquidus), °C		870

Melting Onset (Solidus), °C		820
Melting Onset (Solidus), °C		780

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		250

Thermal Expansion, µm/m-K		20
Thermal Expansion, µm/m-K		19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS		2.0
Electrical Conductivity: Equal Volume, % IACS		83

Electrical Conductivity: Equal Weight (Specific), % IACS		2.2
Electrical Conductivity: Equal Weight (Specific), % IACS		72

Otherwise Unclassified Properties

Density, g/cm³		8.1
Density, g/cm³		10

Common Calculations

Stiffness to Weight: Axial, points		8.6
Stiffness to Weight: Axial, points		4.1

Stiffness to Weight: Bending, points		21
Stiffness to Weight: Bending, points		14

Strength to Weight: Axial, points		15 to 18
Strength to Weight: Axial, points		7.7 to 14

Strength to Weight: Bending, points		16 to 18
Strength to Weight: Bending, points		9.3 to 14

Thermal Shock Resistance, points		13 to 15
Thermal Shock Resistance, points		14 to 25

Alloy Composition

Aluminum (Al), %		0.25 to 3.0
Aluminum (Al), %		0 to 0.0050

Cadmium (Cd), %		0
Cadmium (Cd), %		0 to 0.050

Copper (Cu), %		55 to 61
Copper (Cu), %		9.0 to 10.4

Iron (Fe), %		0 to 1.0
Iron (Fe), %		0 to 0.050

Lead (Pb), %		0.5 to 2.5
Lead (Pb), %		0 to 0.030

Manganese (Mn), %		17 to 23
Manganese (Mn), %		0

Nickel (Ni), %		0 to 5.0
Nickel (Ni), %		0 to 0.010

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.020

Silver (Ag), %		0
Silver (Ag), %		89.6 to 91

Zinc (Zn), %		17 to 23
Zinc (Zn), %		0 to 0.060

Residuals, %		0
Residuals, %		0 to 0.060