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S82121 Stainless Steel vs. S35135 Stainless Steel

Both S82121 stainless steel and S35135 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 64% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is S82121 stainless steel and the bottom bar is S35135 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
34
Fatigue Strength, MPa 370
180
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 78
79
Shear Strength, MPa 470
390
Tensile Strength: Ultimate (UTS), MPa 730
590
Tensile Strength: Yield (Proof), MPa 510
230

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Corrosion, °C 430
560
Maximum Temperature: Mechanical, °C 1020
1100
Melting Completion (Liquidus), °C 1430
1430
Melting Onset (Solidus), °C 1380
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 14
37
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 2.8
6.8
Embodied Energy, MJ/kg 40
94
Embodied Water, L/kg 150
220

Common Calculations

PREN (Pitting Resistance) 28
37
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
160
Resilience: Unit (Modulus of Resilience), kJ/m3 660
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26
20
Strength to Weight: Bending, points 23
19
Thermal Shock Resistance, points 20
13

Alloy Composition

Carbon (C), % 0 to 0.035
0 to 0.080
Chromium (Cr), % 21 to 23
20 to 25
Copper (Cu), % 0.2 to 1.2
0 to 0.75
Iron (Fe), % 66.7 to 75.4
28.3 to 45
Manganese (Mn), % 1.0 to 2.5
0 to 1.0
Molybdenum (Mo), % 0.3 to 1.3
4.0 to 4.8
Nickel (Ni), % 2.0 to 4.0
30 to 38
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 1.0
0.6 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015
Titanium (Ti), % 0
0.4 to 1.0