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S32906 Stainless Steel vs. S31254 Stainless Steel

Both S32906 stainless steel and S31254 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 84% 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 S32906 stainless steel and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 270
190
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 28
40
Fatigue Strength, MPa 460
290
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
80
Shear Strength, MPa 550
490
Tensile Strength: Ultimate (UTS), MPa 850
720
Tensile Strength: Yield (Proof), MPa 620
330

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 460
420
Maximum Temperature: Mechanical, °C 1100
1090
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1420
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 13
14
Thermal Expansion, µm/m-K 13
17

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 20
28
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 3.7
5.5
Embodied Energy, MJ/kg 52
74
Embodied Water, L/kg 190
190

Common Calculations

PREN (Pitting Resistance) 41
44
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
240
Resilience: Unit (Modulus of Resilience), kJ/m3 950
270
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
25
Strength to Weight: Bending, points 26
22
Thermal Diffusivity, mm2/s 3.6
3.8
Thermal Shock Resistance, points 23
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.020
Chromium (Cr), % 28 to 30
19.5 to 20.5
Copper (Cu), % 0 to 0.8
0.5 to 1.0
Iron (Fe), % 56.6 to 63.6
51.4 to 56.3
Manganese (Mn), % 0.8 to 1.5
0 to 1.0
Molybdenum (Mo), % 1.5 to 2.6
6.0 to 6.5
Nickel (Ni), % 5.8 to 7.5
17.5 to 18.5
Nitrogen (N), % 0.3 to 0.4
0.18 to 0.22
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.010