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S31277 Stainless Steel vs. S32750 Stainless Steel

Both S31277 stainless steel and S32750 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 75% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S31277 stainless steel and the bottom bar is S32750 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
210
Elongation at Break, % 45
17
Fatigue Strength, MPa 380
360
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 80
81
Shear Strength, MPa 600
530
Tensile Strength: Ultimate (UTS), MPa 860
860
Tensile Strength: Yield (Proof), MPa 410
590

Thermal Properties

Latent Heat of Fusion, J/g 310
300
Maximum Temperature: Corrosion, °C 430
450
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 36
21
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.7
4.1
Embodied Energy, MJ/kg 90
56
Embodied Water, L/kg 220
180

Common Calculations

PREN (Pitting Resistance) 51
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
130
Resilience: Unit (Modulus of Resilience), kJ/m3 410
860
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
31
Strength to Weight: Bending, points 25
26
Thermal Shock Resistance, points 19
25

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 20.5 to 23
24 to 26
Copper (Cu), % 0.5 to 1.5
0 to 0.5
Iron (Fe), % 35.5 to 46.2
58.1 to 66.8
Manganese (Mn), % 0 to 3.0
0 to 1.2
Molybdenum (Mo), % 6.5 to 8.0
3.0 to 5.0
Nickel (Ni), % 26 to 28
6.0 to 8.0
Nitrogen (N), % 0.3 to 0.4
0.24 to 0.32
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.020