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S31254 Stainless Steel vs. N08366 Stainless Steel

Both S31254 stainless steel and N08366 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a moderately high 92% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S31254 stainless steel and the bottom bar is N08366 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 40
34
Fatigue Strength, MPa 290
190
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 84
82
Shear Modulus, GPa 80
80
Shear Strength, MPa 490
390
Tensile Strength: Ultimate (UTS), MPa 720
590
Tensile Strength: Yield (Proof), MPa 330
240

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 1090
1100
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 460
460
Thermal Conductivity, W/m-K 14
13
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 28
33
Density, g/cm3 8.0
8.1
Embodied Carbon, kg CO2/kg material 5.5
6.2
Embodied Energy, MJ/kg 74
84
Embodied Water, L/kg 190
200

Common Calculations

PREN (Pitting Resistance) 44
42
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
160
Resilience: Unit (Modulus of Resilience), kJ/m3 270
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25
20
Strength to Weight: Bending, points 22
19
Thermal Diffusivity, mm2/s 3.8
3.4
Thermal Shock Resistance, points 15
13

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.035
Chromium (Cr), % 19.5 to 20.5
20 to 22
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51.4 to 56.3
42.4 to 50.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 6.0 to 6.5
6.0 to 7.0
Nickel (Ni), % 17.5 to 18.5
23.5 to 25.5
Nitrogen (N), % 0.18 to 0.22
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030