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S30815 Stainless Steel vs. S31277 Stainless Steel

Both S30815 stainless steel and S31277 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 74% 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 S30815 stainless steel and the bottom bar is S31277 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 45
45
Fatigue Strength, MPa 320
380
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
80
Shear Strength, MPa 480
600
Tensile Strength: Ultimate (UTS), MPa 680
860
Tensile Strength: Yield (Proof), MPa 350
410

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 430
430
Maximum Temperature: Mechanical, °C 1020
1100
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1360
1410
Specific Heat Capacity, J/kg-K 490
460
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 17
36
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.3
6.7
Embodied Energy, MJ/kg 47
90
Embodied Water, L/kg 160
220

Common Calculations

PREN (Pitting Resistance) 24
51
Resilience: Ultimate (Unit Rupture Work), MJ/m3 260
320
Resilience: Unit (Modulus of Resilience), kJ/m3 310
410
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25
29
Strength to Weight: Bending, points 22
25
Thermal Shock Resistance, points 15
19

Alloy Composition

Carbon (C), % 0.050 to 0.1
0 to 0.020
Cerium (Ce), % 0.030 to 0.080
0
Chromium (Cr), % 20 to 22
20.5 to 23
Copper (Cu), % 0
0.5 to 1.5
Iron (Fe), % 62.8 to 68.4
35.5 to 46.2
Manganese (Mn), % 0 to 0.8
0 to 3.0
Molybdenum (Mo), % 0
6.5 to 8.0
Nickel (Ni), % 10 to 12
26 to 28
Nitrogen (N), % 0.14 to 0.2
0.3 to 0.4
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 1.4 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.010