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S31730 Stainless Steel vs. Grade CU5MCuC Nickel

S31730 stainless steel belongs to the iron alloys classification, while grade CU5MCuC nickel belongs to the nickel alloys. They have 70% of their average alloy composition in common. There are 26 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 S31730 stainless steel and the bottom bar is grade CU5MCuC nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
22
Fatigue Strength, MPa 170
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 540
580
Tensile Strength: Yield (Proof), MPa 200
270

Thermal Properties

Latent Heat of Fusion, J/g 290
310
Maximum Temperature: Mechanical, °C 990
980
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 470
460
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 24
45
Density, g/cm3 8.0
8.2
Embodied Carbon, kg CO2/kg material 4.6
7.7
Embodied Energy, MJ/kg 63
110
Embodied Water, L/kg 180
230

Common Calculations

PREN (Pitting Resistance) 30
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
110
Resilience: Unit (Modulus of Resilience), kJ/m3 99
190
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 18
19
Thermal Shock Resistance, points 12
16

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 17 to 19
19.5 to 23.5
Copper (Cu), % 4.0 to 5.0
1.5 to 3.5
Iron (Fe), % 52.4 to 61
22.2 to 37.9
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 3.0 to 4.0
2.5 to 3.5
Nickel (Ni), % 15 to 16.5
38 to 44
Niobium (Nb), % 0
0.6 to 1.2
Nitrogen (N), % 0 to 0.045
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030