C87200 Bronze vs. AWS E312

C87200 bronze belongs to the copper alloys classification, while AWS E312 belongs to the iron alloys. There are 20 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 C87200 bronze and the bottom bar is AWS E312.

UNS C87200 Silicon Bronze AWS E312 (W31310) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		200

Elongation at Break, %		30
Elongation at Break, %		25

Poisson's Ratio		0.34
Poisson's Ratio		0.27

Shear Modulus, GPa		43
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		380
Tensile Strength: Ultimate (UTS), MPa		740

Thermal Properties

Latent Heat of Fusion, J/g		260
Latent Heat of Fusion, J/g		310

Melting Completion (Liquidus), °C		970
Melting Completion (Liquidus), °C		1410

Melting Onset (Solidus), °C		860
Melting Onset (Solidus), °C		1360

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		15

Otherwise Unclassified Properties

Base Metal Price, % relative		29
Base Metal Price, % relative		20

Density, g/cm³		8.6
Density, g/cm³		7.7

Embodied Carbon, kg CO₂/kg material		2.7
Embodied Carbon, kg CO₂/kg material		3.6

Embodied Energy, MJ/kg		44
Embodied Energy, MJ/kg		52

Embodied Water, L/kg		310
Embodied Water, L/kg		200

Common Calculations

Stiffness to Weight: Axial, points		7.4
Stiffness to Weight: Axial, points		15

Stiffness to Weight: Bending, points		19
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		12
Strength to Weight: Axial, points		27

Strength to Weight: Bending, points		14
Strength to Weight: Bending, points		24

Thermal Shock Resistance, points		14
Thermal Shock Resistance, points		18

Alloy Composition

Aluminum (Al), %		0 to 1.5
Aluminum (Al), %		0

Carbon (C), %		0
Carbon (C), %		0 to 0.15

Chromium (Cr), %		0
Chromium (Cr), %		28 to 32

Copper (Cu), %		89 to 99
Copper (Cu), %		0 to 0.75

Iron (Fe), %		0 to 2.5
Iron (Fe), %		52.3 to 63.5

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

Manganese (Mn), %		0 to 1.5
Manganese (Mn), %		0.5 to 2.5

Molybdenum (Mo), %		0
Molybdenum (Mo), %		0 to 0.75

Nickel (Ni), %		0
Nickel (Ni), %		8.0 to 10.5

Phosphorus (P), %		0 to 0.5
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		1.0 to 5.0
Silicon (Si), %		0 to 1.0

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

Tin (Sn), %		0 to 1.0
Tin (Sn), %		0

Zinc (Zn), %		0 to 5.0
Zinc (Zn), %		0