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S41045 Stainless Steel vs. C15900 Copper

S41045 stainless steel belongs to the iron alloys classification, while C15900 copper belongs to the copper alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S41045 stainless steel and the bottom bar is C15900 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 25
6.5
Poisson's Ratio 0.28
0.34
Rockwell B Hardness 70
95
Shear Modulus, GPa 76
43
Shear Strength, MPa 280
420
Tensile Strength: Ultimate (UTS), MPa 430
720
Tensile Strength: Yield (Proof), MPa 230
240

Thermal Properties

Latent Heat of Fusion, J/g 270
210
Maximum Temperature: Mechanical, °C 740
200
Melting Completion (Liquidus), °C 1450
1080
Melting Onset (Solidus), °C 1400
1030
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 29
280
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
48
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
49

Otherwise Unclassified Properties

Base Metal Price, % relative 8.5
30
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 2.2
2.8
Embodied Energy, MJ/kg 31
45
Embodied Water, L/kg 100
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
37
Resilience: Unit (Modulus of Resilience), kJ/m3 140
260
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 16
23
Strength to Weight: Bending, points 16
20
Thermal Diffusivity, mm2/s 7.8
80
Thermal Shock Resistance, points 16
26

Alloy Composition

Aluminum (Al), % 0
0.76 to 0.84
Carbon (C), % 0 to 0.030
0.27 to 0.33
Chromium (Cr), % 12 to 13
0
Copper (Cu), % 0
97.5 to 97.9
Iron (Fe), % 83.8 to 88
0 to 0.040
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 0 to 0.5
0
Niobium (Nb), % 0 to 0.6
0
Nitrogen (N), % 0 to 0.030
0
Oxygen (O), % 0
0.4 to 0.54
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0.66 to 0.74