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S31254 Stainless Steel vs. S21600 Stainless Steel

Both S31254 stainless steel and S21600 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 83% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S31254 stainless steel and the bottom bar is S21600 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
46
Fatigue Strength, MPa 290
360
Poisson's Ratio 0.28
0.28
Reduction in Area, % 56
56
Rockwell B Hardness 84
86
Shear Modulus, GPa 80
79
Shear Strength, MPa 490
500
Tensile Strength: Ultimate (UTS), MPa 720
710
Tensile Strength: Yield (Proof), MPa 330
390

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 1090
990
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1380
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 17
17

Otherwise Unclassified Properties

Base Metal Price, % relative 28
17
Density, g/cm3 8.0
7.7
Embodied Carbon, kg CO2/kg material 5.5
3.6
Embodied Energy, MJ/kg 74
50
Embodied Water, L/kg 190
160

Common Calculations

PREN (Pitting Resistance) 44
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
270
Resilience: Unit (Modulus of Resilience), kJ/m3 270
370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 25
25
Strength to Weight: Bending, points 22
23
Thermal Shock Resistance, points 15
15

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.080
Chromium (Cr), % 19.5 to 20.5
17.5 to 22
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 51.4 to 56.3
57.6 to 67.8
Manganese (Mn), % 0 to 1.0
7.5 to 9.0
Molybdenum (Mo), % 6.0 to 6.5
2.0 to 3.0
Nickel (Ni), % 17.5 to 18.5
5.0 to 7.0
Nitrogen (N), % 0.18 to 0.22
0.25 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030