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S21603 Stainless Steel vs. C71520 Copper-nickel

S21603 stainless steel belongs to the iron alloys classification, while C71520 copper-nickel belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is S21603 stainless steel and the bottom bar is C71520 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Elongation at Break, % 45
10 to 45
Poisson's Ratio 0.28
0.33
Rockwell B Hardness 88
35 to 86
Shear Modulus, GPa 79
51
Shear Strength, MPa 490
250 to 340
Tensile Strength: Ultimate (UTS), MPa 690
370 to 570
Tensile Strength: Yield (Proof), MPa 390
140 to 430

Thermal Properties

Latent Heat of Fusion, J/g 290
230
Maximum Temperature: Mechanical, °C 990
260
Melting Completion (Liquidus), °C 1420
1170
Melting Onset (Solidus), °C 1380
1120
Specific Heat Capacity, J/kg-K 480
400
Thermal Expansion, µm/m-K 17
15

Otherwise Unclassified Properties

Base Metal Price, % relative 17
40
Density, g/cm3 7.7
8.9
Embodied Carbon, kg CO2/kg material 3.6
5.0
Embodied Energy, MJ/kg 50
73
Embodied Water, L/kg 160
280

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
54 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 380
67 to 680
Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 25
12 to 18
Strength to Weight: Bending, points 22
13 to 17
Thermal Shock Resistance, points 15
12 to 19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 17.5 to 22
0
Copper (Cu), % 0
65 to 71.6
Iron (Fe), % 57.6 to 67.8
0.4 to 1.0
Lead (Pb), % 0
0 to 0.020
Manganese (Mn), % 7.5 to 9.0
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
0
Nickel (Ni), % 5.0 to 7.0
28 to 33
Nitrogen (N), % 0.25 to 0.5
0
Phosphorus (P), % 0 to 0.045
0 to 0.2
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0 to 0.020
Zinc (Zn), % 0
0 to 0.5
Residuals, % 0
0 to 0.5