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S21904 Stainless Steel vs. S35125 Stainless Steel

Both S21904 stainless steel and S35125 stainless steel are iron alloys. They have 69% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is S21904 stainless steel and the bottom bar is S35125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17 to 51
39
Fatigue Strength, MPa 380 to 550
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
78
Shear Strength, MPa 510 to 620
370
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
540
Tensile Strength: Yield (Proof), MPa 390 to 910
230

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 430
490
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
12
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 15
36
Density, g/cm3 7.7
8.1
Embodied Carbon, kg CO2/kg material 3.0
6.4
Embodied Energy, MJ/kg 43
89
Embodied Water, L/kg 160
210

Common Calculations

PREN (Pitting Resistance) 25
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
170
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 36
19
Strength to Weight: Bending, points 23 to 29
18
Thermal Diffusivity, mm2/s 3.8
3.1
Thermal Shock Resistance, points 15 to 21
12

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.1
Chromium (Cr), % 19 to 21.5
20 to 23
Iron (Fe), % 59.5 to 67.4
36.2 to 45.8
Manganese (Mn), % 8.0 to 10
1.0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 5.5 to 7.5
31 to 35
Niobium (Nb), % 0
0.25 to 0.6
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.015