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S31277 Stainless Steel vs. S21603 Stainless Steel

Both S31277 stainless steel and S21603 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 71% of their average alloy composition in common. There are 28 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 S31277 stainless steel and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 45
45
Fatigue Strength, MPa 380
360
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
79
Shear Strength, MPa 600
490
Tensile Strength: Ultimate (UTS), MPa 860
690
Tensile Strength: Yield (Proof), MPa 410
390

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 430
420
Maximum Temperature: Mechanical, °C 1100
990
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 460
480
Thermal Expansion, µm/m-K 16
17

Otherwise Unclassified Properties

Base Metal Price, % relative 36
17
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 6.7
3.6
Embodied Energy, MJ/kg 90
50
Embodied Water, L/kg 220
160

Common Calculations

PREN (Pitting Resistance) 51
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 320
270
Resilience: Unit (Modulus of Resilience), kJ/m3 410
380
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 29
25
Strength to Weight: Bending, points 25
22
Thermal Shock Resistance, points 19
15

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 20.5 to 23
17.5 to 22
Copper (Cu), % 0.5 to 1.5
0
Iron (Fe), % 35.5 to 46.2
57.6 to 67.8
Manganese (Mn), % 0 to 3.0
7.5 to 9.0
Molybdenum (Mo), % 6.5 to 8.0
2.0 to 3.0
Nickel (Ni), % 26 to 28
5.0 to 7.0
Nitrogen (N), % 0.3 to 0.4
0.25 to 0.5
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 0.75
Sulfur (S), % 0 to 0.010
0 to 0.030