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S39277 Stainless Steel vs. S21603 Stainless Steel

Both S39277 stainless steel and S21603 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 90% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is S39277 stainless steel and the bottom bar is S21603 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 250
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
45
Fatigue Strength, MPa 480
360
Poisson's Ratio 0.27
0.28
Reduction in Area, % 57
57
Shear Modulus, GPa 80
79
Shear Strength, MPa 600
490
Tensile Strength: Ultimate (UTS), MPa 930
690
Tensile Strength: Yield (Proof), MPa 660
390

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 450
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 470
480
Thermal Expansion, µm/m-K 13
17

Otherwise Unclassified Properties

Base Metal Price, % relative 23
17
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.2
3.6
Embodied Energy, MJ/kg 59
50
Embodied Water, L/kg 180
160

Common Calculations

PREN (Pitting Resistance) 43
34
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
270
Resilience: Unit (Modulus of Resilience), kJ/m3 1070
380
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 33
25
Strength to Weight: Bending, points 27
22
Thermal Shock Resistance, points 26
15

Alloy Composition

Carbon (C), % 0 to 0.025
0 to 0.030
Chromium (Cr), % 24 to 26
17.5 to 22
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 56.8 to 64.3
57.6 to 67.8
Manganese (Mn), % 0 to 0.8
7.5 to 9.0
Molybdenum (Mo), % 3.0 to 4.0
2.0 to 3.0
Nickel (Ni), % 6.5 to 8.0
5.0 to 7.0
Nitrogen (N), % 0.23 to 0.33
0.25 to 0.5
Phosphorus (P), % 0 to 0.025
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 0.75
Sulfur (S), % 0 to 0.0020
0 to 0.030
Tungsten (W), % 0.8 to 1.2
0