C55281 Copper vs. S44635 Stainless Steel

C55281 copper belongs to the copper alloys classification, while S44635 stainless steel belongs to the iron alloys. There are 18 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

For each property being compared, the top bar is C55281 copper and the bottom bar is S44635 stainless steel.

UNS C55281 (BCuP-3) Filler Metal UNS S44635 (25-4-4) 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		0.27

Shear Modulus, GPa		40
Shear Modulus, GPa		81

Tensile Strength: Ultimate (UTS), MPa		190
Tensile Strength: Ultimate (UTS), MPa		710

Thermal Properties

Latent Heat of Fusion, J/g		190
Latent Heat of Fusion, J/g		300

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

Melting Completion (Liquidus), °C		810
Melting Completion (Liquidus), °C		1460

Melting Onset (Solidus), °C		640
Melting Onset (Solidus), °C		1420

Specific Heat Capacity, J/kg-K		400
Specific Heat Capacity, J/kg-K		470

Thermal Expansion, µm/m-K		16
Thermal Expansion, µm/m-K		11

Otherwise Unclassified Properties

Density, g/cm³		8.7
Density, g/cm³		7.8

Embodied Carbon, kg CO₂/kg material		7.0
Embodied Carbon, kg CO₂/kg material		4.4

Embodied Energy, MJ/kg		110
Embodied Energy, MJ/kg		62

Common Calculations

Stiffness to Weight: Axial, points		6.9
Stiffness to Weight: Axial, points		15

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

Strength to Weight: Axial, points		6.1
Strength to Weight: Axial, points		25

Strength to Weight: Bending, points		8.5
Strength to Weight: Bending, points		23

Thermal Shock Resistance, points		7.7
Thermal Shock Resistance, points		23

Alloy Composition

Carbon (C), %		0
Carbon (C), %		0 to 0.025

Chromium (Cr), %		0
Chromium (Cr), %		24.5 to 26

Copper (Cu), %		88.5 to 89.4
Copper (Cu), %		0

Iron (Fe), %		0
Iron (Fe), %		61.5 to 68.5

Manganese (Mn), %		0
Manganese (Mn), %		0 to 1.0

Molybdenum (Mo), %		0
Molybdenum (Mo), %		3.5 to 4.5

Nickel (Ni), %		0
Nickel (Ni), %		3.5 to 4.5

Niobium (Nb), %		0
Niobium (Nb), %		0.2 to 0.8

Nitrogen (N), %		0
Nitrogen (N), %		0 to 0.035

Phosphorus (P), %		5.8 to 6.2
Phosphorus (P), %		0 to 0.040

Silicon (Si), %		0
Silicon (Si), %		0 to 0.75

Silver (Ag), %		4.8 to 5.2
Silver (Ag), %		0

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

Titanium (Ti), %		0
Titanium (Ti), %		0.2 to 0.8

Residuals, %		0 to 0.15
Residuals, %		0