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S35125 Stainless Steel vs. S31727 Stainless Steel

Both S35125 stainless steel and S31727 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 78% 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 S35125 stainless steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 39
40
Fatigue Strength, MPa 200
240
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Shear Strength, MPa 370
430
Tensile Strength: Ultimate (UTS), MPa 540
630
Tensile Strength: Yield (Proof), MPa 230
270

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 490
420
Maximum Temperature: Mechanical, °C 1100
1010
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 36
24
Density, g/cm3 8.1
8.0
Embodied Carbon, kg CO2/kg material 6.4
4.7
Embodied Energy, MJ/kg 89
64
Embodied Water, L/kg 210
180

Common Calculations

PREN (Pitting Resistance) 30
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
200
Resilience: Unit (Modulus of Resilience), kJ/m3 140
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
22
Strength to Weight: Bending, points 18
20
Thermal Shock Resistance, points 12
14

Alloy Composition

Carbon (C), % 0 to 0.1
0 to 0.030
Chromium (Cr), % 20 to 23
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 36.2 to 45.8
53.7 to 61.3
Manganese (Mn), % 1.0 to 1.5
0 to 1.0
Molybdenum (Mo), % 2.0 to 3.0
3.8 to 4.5
Nickel (Ni), % 31 to 35
14.5 to 16.5
Niobium (Nb), % 0.25 to 0.6
0
Nitrogen (N), % 0
0.15 to 0.21
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030