AWS E33-31 vs. C37700 Brass

AWS E33-31 belongs to the iron alloys classification, while C37700 brass belongs to the copper alloys. There are 20 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 AWS E33-31 and the bottom bar is C37700 brass.

AWS E33-31 (W33310) Weld Metal UNS C37700 (CW612N) Forging Brass

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		210
Elastic (Young's, Tensile) Modulus, GPa		100

Elongation at Break, %		29
Elongation at Break, %		40

Poisson's Ratio		0.27
Poisson's Ratio		0.31

Shear Modulus, GPa		81
Shear Modulus, GPa		39

Tensile Strength: Ultimate (UTS), MPa		810
Tensile Strength: Ultimate (UTS), MPa		400

Thermal Properties

Latent Heat of Fusion, J/g		320
Latent Heat of Fusion, J/g		170

Melting Completion (Liquidus), °C		1380
Melting Completion (Liquidus), °C		890

Melting Onset (Solidus), °C		1330
Melting Onset (Solidus), °C		880

Specific Heat Capacity, J/kg-K		480
Specific Heat Capacity, J/kg-K		380

Thermal Expansion, µm/m-K		14
Thermal Expansion, µm/m-K		21

Otherwise Unclassified Properties

Base Metal Price, % relative		36
Base Metal Price, % relative		23

Density, g/cm³		7.9
Density, g/cm³		8.1

Embodied Carbon, kg CO₂/kg material		6.0
Embodied Carbon, kg CO₂/kg material		2.6

Embodied Energy, MJ/kg		86
Embodied Energy, MJ/kg		45

Embodied Water, L/kg		260
Embodied Water, L/kg		320

Common Calculations

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		7.1

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

Strength to Weight: Axial, points		28
Strength to Weight: Axial, points		14

Strength to Weight: Bending, points		24
Strength to Weight: Bending, points		15

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

Alloy Composition

Carbon (C), %		0 to 0.030
Carbon (C), %		0

Chromium (Cr), %		31 to 35
Chromium (Cr), %		0

Copper (Cu), %		0.4 to 0.8
Copper (Cu), %		58 to 61

Iron (Fe), %		24.7 to 34.8
Iron (Fe), %		0 to 0.3

Lead (Pb), %		0
Lead (Pb), %		1.5 to 2.5

Manganese (Mn), %		2.5 to 4.0
Manganese (Mn), %		0

Molybdenum (Mo), %		1.0 to 2.0
Molybdenum (Mo), %		0

Nickel (Ni), %		30 to 32
Nickel (Ni), %		0

Nitrogen (N), %		0.3 to 0.5
Nitrogen (N), %		0

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

Silicon (Si), %		0 to 0.9
Silicon (Si), %		0

Sulfur (S), %		0 to 0.010
Sulfur (S), %		0

Zinc (Zn), %		0
Zinc (Zn), %		35.7 to 40.5

Residuals, %		0
Residuals, %		0 to 0.5