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S20431 Stainless Steel vs. Nickel 825

S20431 stainless steel belongs to the iron alloys classification, while nickel 825 belongs to the nickel alloys. They have 53% of their average alloy composition in common. There are 31 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 S20431 stainless steel and the bottom bar is nickel 825.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 46
34
Fatigue Strength, MPa 320
190
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Shear Strength, MPa 500
430
Tensile Strength: Ultimate (UTS), MPa 710
650
Tensile Strength: Yield (Proof), MPa 350
260

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Mechanical, °C 890
980
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1360
1370
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
1.7

Otherwise Unclassified Properties

Base Metal Price, % relative 12
41
Density, g/cm3 7.7
8.2
Embodied Carbon, kg CO2/kg material 2.5
7.2
Embodied Energy, MJ/kg 36
100
Embodied Water, L/kg 140
230

Common Calculations

PREN (Pitting Resistance) 20
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
180
Resilience: Unit (Modulus of Resilience), kJ/m3 310
170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
22
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 4.0
2.9
Thermal Shock Resistance, points 15
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.2
Carbon (C), % 0 to 0.12
0 to 0.050
Chromium (Cr), % 17 to 18
19.5 to 23.5
Copper (Cu), % 1.5 to 3.5
1.5 to 3.0
Iron (Fe), % 66.1 to 74.4
22 to 37.9
Manganese (Mn), % 5.0 to 7.0
0 to 1.0
Molybdenum (Mo), % 0
2.5 to 3.5
Nickel (Ni), % 2.0 to 4.0
38 to 46
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.050
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
0.6 to 1.2