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S40910 Stainless Steel vs. N08031 Stainless Steel

Both S40910 stainless steel and N08031 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 45% 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 S40910 stainless steel and the bottom bar is N08031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
210
Elongation at Break, % 23
45
Fatigue Strength, MPa 130
290
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
81
Shear Strength, MPa 270
510
Tensile Strength: Ultimate (UTS), MPa 430
730
Tensile Strength: Yield (Proof), MPa 190
310

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Maximum Temperature: Corrosion, °C 440
460
Maximum Temperature: Mechanical, °C 710
1100
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 26
12
Thermal Expansion, µm/m-K 10
18

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
39
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.0
7.1
Embodied Energy, MJ/kg 28
96
Embodied Water, L/kg 94
240

Common Calculations

PREN (Pitting Resistance) 11
52
Resilience: Ultimate (Unit Rupture Work), MJ/m3 80
270
Resilience: Unit (Modulus of Resilience), kJ/m3 94
230
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 16
25
Strength to Weight: Bending, points 16
22
Thermal Diffusivity, mm2/s 6.9
3.1
Thermal Shock Resistance, points 16
14

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.015
Chromium (Cr), % 10.5 to 11.7
26 to 28
Copper (Cu), % 0
1.0 to 1.4
Iron (Fe), % 85 to 89.5
29 to 36.9
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0
6.0 to 7.0
Nickel (Ni), % 0 to 0.5
30 to 32
Niobium (Nb), % 0 to 0.17
0
Nitrogen (N), % 0 to 0.030
0.15 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.020
Silicon (Si), % 0 to 1.0
0 to 0.3
Sulfur (S), % 0 to 0.020
0 to 0.010
Titanium (Ti), % 0 to 0.5
0