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S31277 Stainless Steel vs. N08925 Stainless Steel

Both S31277 stainless steel and N08925 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 94% of their average alloy composition in common. There are 28 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 S31277 stainless steel and the bottom bar is N08925 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
45
Fatigue Strength, MPa 380
310
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
80
Shear Strength, MPa 600
470
Tensile Strength: Ultimate (UTS), MPa 860
680
Tensile Strength: Yield (Proof), MPa 410
340

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 460
460
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 36
33
Density, g/cm3 8.1
8.1
Embodied Carbon, kg CO2/kg material 6.7
6.2
Embodied Energy, MJ/kg 90
84
Embodied Water, L/kg 220
200

Common Calculations

PREN (Pitting Resistance) 51
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
250
Resilience: Unit (Modulus of Resilience), kJ/m3 410
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 29
23
Strength to Weight: Bending, points 25
21
Thermal Shock Resistance, points 19
15

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.020
Chromium (Cr), % 20.5 to 23
19 to 21
Copper (Cu), % 0.5 to 1.5
0.8 to 1.5
Iron (Fe), % 35.5 to 46.2
42.7 to 50.1
Manganese (Mn), % 0 to 3.0
0 to 1.0
Molybdenum (Mo), % 6.5 to 8.0
6.0 to 7.0
Nickel (Ni), % 26 to 28
24 to 26
Nitrogen (N), % 0.3 to 0.4
0.1 to 0.2
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.030