C55181 Copper vs. S34565 Stainless Steel

C55181 copper belongs to the copper alloys classification, while S34565 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is C55181 copper and the bottom bar is S34565 stainless steel.

UNS C55181 (BCuP-2) Filler Metal UNS S34565 (Alloy 24, F49) Stainless Steel

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		110
Elastic (Young's, Tensile) Modulus, GPa		210

Poisson's Ratio		0.34
Poisson's Ratio		0.28

Shear Modulus, GPa		40
Shear Modulus, GPa		80

Tensile Strength: Ultimate (UTS), MPa		200
Tensile Strength: Ultimate (UTS), MPa		900

Thermal Properties

Latent Heat of Fusion, J/g		190
Latent Heat of Fusion, J/g		310

Maximum Temperature: Mechanical, °C		200
Maximum Temperature: Mechanical, °C		1100

Melting Completion (Liquidus), °C		790
Melting Completion (Liquidus), °C		1420

Melting Onset (Solidus), °C		710
Melting Onset (Solidus), °C		1380

Specific Heat Capacity, J/kg-K		410
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		15

Otherwise Unclassified Properties

Base Metal Price, % relative		28
Base Metal Price, % relative		28

Density, g/cm³		8.5
Density, g/cm³		7.9

Embodied Carbon, kg CO₂/kg material		2.4
Embodied Carbon, kg CO₂/kg material		5.3

Embodied Energy, MJ/kg		38
Embodied Energy, MJ/kg		73

Embodied Water, L/kg		290
Embodied Water, L/kg		210

Common Calculations

Stiffness to Weight: Axial, points		7.0
Stiffness to Weight: Axial, points		14

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

Strength to Weight: Axial, points		6.5
Strength to Weight: Axial, points		32

Strength to Weight: Bending, points		8.9
Strength to Weight: Bending, points		26

Thermal Shock Resistance, points		8.2
Thermal Shock Resistance, points		22

Alloy Composition

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

Chromium (Cr), %		0
Chromium (Cr), %		23 to 25

Copper (Cu), %		92.4 to 93
Copper (Cu), %		0

Iron (Fe), %		0
Iron (Fe), %		43.2 to 51.6

Manganese (Mn), %		0
Manganese (Mn), %		5.0 to 7.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		4.0 to 5.0

Nickel (Ni), %		0
Nickel (Ni), %		16 to 18

Niobium (Nb), %		0
Niobium (Nb), %		0 to 0.1

Nitrogen (N), %		0
Nitrogen (N), %		0.4 to 0.6

Phosphorus (P), %		7.0 to 7.5
Phosphorus (P), %		0 to 0.030

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

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

Residuals, %		0 to 0.15
Residuals, %		0