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S20431 Stainless Steel vs. N08810 Stainless Steel

Both S20431 stainless steel and N08810 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 67% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S20431 stainless steel and the bottom bar is N08810 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 46
33
Fatigue Strength, MPa 320
160
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 500
340
Tensile Strength: Ultimate (UTS), MPa 710
520
Tensile Strength: Yield (Proof), MPa 350
200

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 410
490
Maximum Temperature: Mechanical, °C 890
1100
Melting Completion (Liquidus), °C 1400
1400
Melting Onset (Solidus), °C 1360
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
12
Thermal Expansion, µm/m-K 17
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
30
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.5
5.3
Embodied Energy, MJ/kg 36
76
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 20
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
140
Resilience: Unit (Modulus of Resilience), kJ/m3 310
100
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
18
Strength to Weight: Bending, points 23
18
Thermal Diffusivity, mm2/s 4.0
3.0
Thermal Shock Resistance, points 15
13

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.6
Carbon (C), % 0 to 0.12
0.050 to 0.1
Chromium (Cr), % 17 to 18
19 to 23
Copper (Cu), % 1.5 to 3.5
0 to 0.75
Iron (Fe), % 66.1 to 74.4
39.5 to 50.7
Manganese (Mn), % 5.0 to 7.0
0 to 1.5
Nickel (Ni), % 2.0 to 4.0
30 to 35
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.15 to 0.6