C81400 Copper vs. AWS E209

C81400 copper belongs to the copper alloys classification, while AWS E209 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 C81400 copper and the bottom bar is AWS E209.

UNS C81400 (Alloy 70C) Beryllium Copper AWS E209 (W32210) Weld Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		120
Elastic (Young's, Tensile) Modulus, GPa		200

Elongation at Break, %		11
Elongation at Break, %		17

Poisson's Ratio		0.34
Poisson's Ratio		0.28

Shear Modulus, GPa		41
Shear Modulus, GPa		79

Tensile Strength: Ultimate (UTS), MPa		370
Tensile Strength: Ultimate (UTS), MPa		770

Thermal Properties

Latent Heat of Fusion, J/g		210
Latent Heat of Fusion, J/g		300

Melting Completion (Liquidus), °C		1090
Melting Completion (Liquidus), °C		1420

Melting Onset (Solidus), °C		1070
Melting Onset (Solidus), °C		1370

Specific Heat Capacity, J/kg-K		390
Specific Heat Capacity, J/kg-K		480

Thermal Expansion, µm/m-K		17
Thermal Expansion, µm/m-K		14

Otherwise Unclassified Properties

Base Metal Price, % relative		33
Base Metal Price, % relative		21

Density, g/cm³		8.9
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		2.8
Embodied Carbon, kg CO₂/kg material		4.4

Embodied Energy, MJ/kg		45
Embodied Energy, MJ/kg		63

Embodied Water, L/kg		310
Embodied Water, L/kg		180

Common Calculations

Stiffness to Weight: Axial, points		7.3
Stiffness to Weight: Axial, points		14

Stiffness to Weight: Bending, points		18
Stiffness to Weight: Bending, points		25

Strength to Weight: Axial, points		11
Strength to Weight: Axial, points		28

Strength to Weight: Bending, points		13
Strength to Weight: Bending, points		24

Thermal Shock Resistance, points		13
Thermal Shock Resistance, points		19

Alloy Composition

Beryllium (Be), %		0.020 to 0.1
Beryllium (Be), %		0

Carbon (C), %		0
Carbon (C), %		0 to 0.060

Chromium (Cr), %		0.6 to 1.0
Chromium (Cr), %		20.5 to 24

Copper (Cu), %		98.4 to 99.38
Copper (Cu), %		0 to 0.75

Iron (Fe), %		0
Iron (Fe), %		51.5 to 64.3

Manganese (Mn), %		0
Manganese (Mn), %		4.0 to 7.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		1.5 to 3.0

Nickel (Ni), %		0
Nickel (Ni), %		9.5 to 12

Nitrogen (N), %		0
Nitrogen (N), %		0.1 to 0.3

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

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

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

Vanadium (V), %		0
Vanadium (V), %		0.1 to 0.3

Residuals, %		0 to 0.5
Residuals, %		0