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S21460 Stainless Steel vs. S31730 Stainless Steel

Both S21460 stainless steel and S31730 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 82% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S21460 stainless steel and the bottom bar is S31730 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 46
40
Fatigue Strength, MPa 390
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 580
370
Tensile Strength: Ultimate (UTS), MPa 830
540
Tensile Strength: Yield (Proof), MPa 430
200

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 920
990
Melting Completion (Liquidus), °C 1380
1430
Melting Onset (Solidus), °C 1330
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 18
16

Otherwise Unclassified Properties

Base Metal Price, % relative 14
24
Density, g/cm3 7.6
8.0
Embodied Carbon, kg CO2/kg material 3.0
4.6
Embodied Energy, MJ/kg 43
63
Embodied Water, L/kg 160
180

Common Calculations

PREN (Pitting Resistance) 25
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
170
Resilience: Unit (Modulus of Resilience), kJ/m3 460
99
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
19
Strength to Weight: Bending, points 26
18
Thermal Shock Resistance, points 17
12

Alloy Composition

Carbon (C), % 0 to 0.12
0 to 0.030
Chromium (Cr), % 17 to 19
17 to 19
Copper (Cu), % 0
4.0 to 5.0
Iron (Fe), % 57.3 to 63.7
52.4 to 61
Manganese (Mn), % 14 to 16
0 to 2.0
Molybdenum (Mo), % 0
3.0 to 4.0
Nickel (Ni), % 5.0 to 6.0
15 to 16.5
Nitrogen (N), % 0.35 to 0.5
0 to 0.045
Phosphorus (P), % 0 to 0.060
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.010