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N08925 Stainless Steel vs. S31727 Stainless Steel

Both N08925 stainless steel and S31727 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 86% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is N08925 stainless steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45
40
Fatigue Strength, MPa 310
240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Shear Strength, MPa 470
430
Tensile Strength: Ultimate (UTS), MPa 680
630
Tensile Strength: Yield (Proof), MPa 340
270

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1100
1010
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 460
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 33
24
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 6.2
4.7
Embodied Energy, MJ/kg 84
64
Embodied Water, L/kg 200
180

Common Calculations

PREN (Pitting Resistance) 44
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
200
Resilience: Unit (Modulus of Resilience), kJ/m3 280
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23
22
Strength to Weight: Bending, points 21
20
Thermal Shock Resistance, points 15
14

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 19 to 21
17.5 to 19
Copper (Cu), % 0.8 to 1.5
2.8 to 4.0
Iron (Fe), % 42.7 to 50.1
53.7 to 61.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 6.0 to 7.0
3.8 to 4.5
Nickel (Ni), % 24 to 26
14.5 to 16.5
Nitrogen (N), % 0.1 to 0.2
0.15 to 0.21
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030