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S21640 Stainless Steel vs. Nickel 30

S21640 stainless steel belongs to the iron alloys classification, while nickel 30 belongs to the nickel alloys. They have 41% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is S21640 stainless steel and the bottom bar is nickel 30.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 46
34
Fatigue Strength, MPa 320
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
82
Shear Strength, MPa 520
440
Tensile Strength: Ultimate (UTS), MPa 740
660
Tensile Strength: Yield (Proof), MPa 350
270

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 940
1020
Melting Completion (Liquidus), °C 1430
1480
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 15
10
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 17
60
Density, g/cm3 7.7
8.5
Embodied Carbon, kg CO2/kg material 3.6
9.4
Embodied Energy, MJ/kg 51
130
Embodied Water, L/kg 150
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
180
Resilience: Unit (Modulus of Resilience), kJ/m3 300
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 27
22
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 4.0
2.7
Thermal Shock Resistance, points 16
18

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 17.5 to 19.5
28 to 31.5
Cobalt (Co), % 0
0 to 5.0
Copper (Cu), % 0
1.0 to 2.4
Iron (Fe), % 63 to 74.3
13 to 17
Manganese (Mn), % 3.5 to 6.5
0 to 0.030
Molybdenum (Mo), % 0.5 to 2.0
4.0 to 6.0
Nickel (Ni), % 4.0 to 6.5
30.2 to 52.2
Niobium (Nb), % 0.1 to 1.0
0.3 to 1.5
Nitrogen (N), % 0.080 to 0.3
0
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.020
Tungsten (W), % 0
1.5 to 4.0