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S20910 Stainless Steel vs. S31727 Stainless Steel

Both S20910 stainless steel and S31727 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 30 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 S20910 stainless steel and the bottom bar is S31727 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 290
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 39
40
Fatigue Strength, MPa 310 to 460
240
Poisson's Ratio 0.28
0.28
Reduction in Area, % 56 to 62
56
Shear Modulus, GPa 79
78
Shear Strength, MPa 500 to 570
430
Tensile Strength: Ultimate (UTS), MPa 780 to 940
630
Tensile Strength: Yield (Proof), MPa 430 to 810
270

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 460
420
Maximum Temperature: Mechanical, °C 1080
1010
Melting Completion (Liquidus), °C 1420
1440
Melting Onset (Solidus), °C 1380
1390
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 22
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 4.8
4.7
Embodied Energy, MJ/kg 68
64
Embodied Water, L/kg 180
180

Common Calculations

PREN (Pitting Resistance) 34
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
200
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 1640
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 33
22
Strength to Weight: Bending, points 24 to 27
20
Thermal Shock Resistance, points 17 to 21
14

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 20.5 to 23.5
17.5 to 19
Copper (Cu), % 0
2.8 to 4.0
Iron (Fe), % 52.1 to 62.1
53.7 to 61.3
Manganese (Mn), % 4.0 to 6.0
0 to 1.0
Molybdenum (Mo), % 1.5 to 3.0
3.8 to 4.5
Nickel (Ni), % 11.5 to 13.5
14.5 to 16.5
Niobium (Nb), % 0.1 to 0.3
0
Nitrogen (N), % 0.2 to 0.4
0.15 to 0.21
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.1 to 0.3
0