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N08031 Stainless Steel vs. S38815 Stainless Steel

Both N08031 stainless steel and S38815 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 65% of their average alloy composition in common. There are 28 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 N08031 stainless steel and the bottom bar is S38815 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 45
34
Fatigue Strength, MPa 290
230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
74
Shear Strength, MPa 510
410
Tensile Strength: Ultimate (UTS), MPa 730
610
Tensile Strength: Yield (Proof), MPa 310
290

Thermal Properties

Latent Heat of Fusion, J/g 310
370
Maximum Temperature: Corrosion, °C 460
400
Maximum Temperature: Mechanical, °C 1100
860
Melting Completion (Liquidus), °C 1440
1360
Melting Onset (Solidus), °C 1390
1310
Specific Heat Capacity, J/kg-K 460
500
Thermal Expansion, µm/m-K 18
15

Otherwise Unclassified Properties

Base Metal Price, % relative 39
19
Density, g/cm3 8.1
7.5
Embodied Carbon, kg CO2/kg material 7.1
3.8
Embodied Energy, MJ/kg 96
54
Embodied Water, L/kg 240
140

Common Calculations

PREN (Pitting Resistance) 52
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
170
Resilience: Unit (Modulus of Resilience), kJ/m3 230
220
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
22
Strength to Weight: Bending, points 22
21
Thermal Shock Resistance, points 14
15

Alloy Composition

Aluminum (Al), % 0
0 to 0.3
Carbon (C), % 0 to 0.015
0 to 0.030
Chromium (Cr), % 26 to 28
13 to 15
Copper (Cu), % 1.0 to 1.4
0.75 to 1.5
Iron (Fe), % 29 to 36.9
56.1 to 67
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 6.0 to 7.0
0.75 to 1.5
Nickel (Ni), % 30 to 32
13 to 17
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 0.3
5.5 to 6.5
Sulfur (S), % 0 to 0.010
0 to 0.020