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S31254 Stainless Steel vs. S32750 Stainless Steel

Both S31254 stainless steel and S32750 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 86% of their average alloy composition in common. There are 33 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 S31254 stainless steel and the bottom bar is S32750 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
270
Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 40
17
Fatigue Strength, MPa 290
360
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 80
81
Shear Strength, MPa 490
530
Tensile Strength: Ultimate (UTS), MPa 720
860
Tensile Strength: Yield (Proof), MPa 330
590

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 420
450
Maximum Temperature: Mechanical, °C 1090
1100
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 460
480
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 28
21
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.5
4.1
Embodied Energy, MJ/kg 74
56
Embodied Water, L/kg 190
180

Common Calculations

PREN (Pitting Resistance) 44
43
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
130
Resilience: Unit (Modulus of Resilience), kJ/m3 270
860
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
31
Strength to Weight: Bending, points 22
26
Thermal Diffusivity, mm2/s 3.8
4.0
Thermal Shock Resistance, points 15
25

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 19.5 to 20.5
24 to 26
Copper (Cu), % 0.5 to 1.0
0 to 0.5
Iron (Fe), % 51.4 to 56.3
58.1 to 66.8
Manganese (Mn), % 0 to 1.0
0 to 1.2
Molybdenum (Mo), % 6.0 to 6.5
3.0 to 5.0
Nickel (Ni), % 17.5 to 18.5
6.0 to 8.0
Nitrogen (N), % 0.18 to 0.22
0.24 to 0.32
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.8
0 to 0.8
Sulfur (S), % 0 to 0.010
0 to 0.020