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N08031 Stainless Steel vs. S31100 Stainless Steel

Both N08031 stainless steel and S31100 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 66% of their average alloy composition in common. There are 30 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 N08031 stainless steel and the bottom bar is S31100 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
4.5
Fatigue Strength, MPa 290
330
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 81
79
Shear Strength, MPa 510
580
Tensile Strength: Ultimate (UTS), MPa 730
1000
Tensile Strength: Yield (Proof), MPa 310
710

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 460
470
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1440
1420
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
16
Thermal Expansion, µm/m-K 18
13

Otherwise Unclassified Properties

Base Metal Price, % relative 39
16
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 7.1
3.1
Embodied Energy, MJ/kg 96
44
Embodied Water, L/kg 240
170

Common Calculations

PREN (Pitting Resistance) 52
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
40
Resilience: Unit (Modulus of Resilience), kJ/m3 230
1240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
36
Strength to Weight: Bending, points 22
29
Thermal Diffusivity, mm2/s 3.1
4.2
Thermal Shock Resistance, points 14
28

Alloy Composition

Carbon (C), % 0 to 0.015
0 to 0.060
Chromium (Cr), % 26 to 28
25 to 27
Copper (Cu), % 1.0 to 1.4
0
Iron (Fe), % 29 to 36.9
63.6 to 69
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 30 to 32
6.0 to 7.0
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.045
Silicon (Si), % 0 to 0.3
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0
0 to 0.25