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N08811 Stainless Steel vs. S31266 Stainless Steel

Both N08811 stainless steel and S31266 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 85% 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 N08811 stainless steel and the bottom bar is S31266 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 33
40
Fatigue Strength, MPa 150
400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
81
Shear Strength, MPa 340
590
Tensile Strength: Ultimate (UTS), MPa 510
860
Tensile Strength: Yield (Proof), MPa 190
470

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 490
440
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1390
1470
Melting Onset (Solidus), °C 1360
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 12
12
Thermal Expansion, µm/m-K 14
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 30
37
Density, g/cm3 8.0
8.2
Embodied Carbon, kg CO2/kg material 5.3
6.5
Embodied Energy, MJ/kg 76
89
Embodied Water, L/kg 200
220

Common Calculations

PREN (Pitting Resistance) 21
54
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
290
Resilience: Unit (Modulus of Resilience), kJ/m3 94
540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
29
Strength to Weight: Bending, points 18
24
Thermal Diffusivity, mm2/s 3.0
3.1
Thermal Shock Resistance, points 13
18

Alloy Composition

Aluminum (Al), % 0.15 to 0.6
0
Carbon (C), % 0.060 to 0.1
0 to 0.030
Chromium (Cr), % 19 to 23
23 to 25
Copper (Cu), % 0 to 0.75
1.0 to 2.5
Iron (Fe), % 39.5 to 50.6
34.1 to 46
Manganese (Mn), % 0 to 1.5
2.0 to 4.0
Molybdenum (Mo), % 0
5.2 to 6.2
Nickel (Ni), % 30 to 35
21 to 24
Nitrogen (N), % 0
0.35 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0.15 to 0.6
0
Tungsten (W), % 0
1.5 to 2.5