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N08926 Stainless Steel vs. S31803 Stainless Steel

Both N08926 stainless steel and S31803 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is N08926 stainless steel and the bottom bar is S31803 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
29
Fatigue Strength, MPa 290
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 80
80
Shear Strength, MPa 500
460
Tensile Strength: Ultimate (UTS), MPa 740
710
Tensile Strength: Yield (Proof), MPa 330
500

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 1100
1060
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 12
16
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 33
17
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.2
3.6
Embodied Energy, MJ/kg 84
49
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 45
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
180
Resilience: Unit (Modulus of Resilience), kJ/m3 270
630
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
25
Strength to Weight: Bending, points 22
23
Thermal Diffusivity, mm2/s 3.2
4.3
Thermal Shock Resistance, points 16
20

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 19 to 21
21 to 23
Copper (Cu), % 0.5 to 1.5
0
Iron (Fe), % 41.7 to 50.4
63.7 to 71.9
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 6.0 to 7.0
2.5 to 3.5
Nickel (Ni), % 24 to 26
4.5 to 6.5
Nitrogen (N), % 0.15 to 0.25
0.080 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.020