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S21904 Stainless Steel vs. S66286 Stainless Steel

Both S21904 stainless steel and S66286 stainless steel are iron alloys. They have 77% 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 S66286 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 17 to 51
17 to 40
Fatigue Strength, MPa 380 to 550
240 to 410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
75
Shear Strength, MPa 510 to 620
420 to 630
Tensile Strength: Ultimate (UTS), MPa 700 to 1000
620 to 1020
Tensile Strength: Yield (Proof), MPa 390 to 910
280 to 670

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 430
780
Maximum Temperature: Mechanical, °C 980
920
Melting Completion (Liquidus), °C 1400
1430
Melting Onset (Solidus), °C 1350
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
15
Thermal Expansion, µm/m-K 17
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 15
26
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.0
6.0
Embodied Energy, MJ/kg 43
87
Embodied Water, L/kg 160
170

Common Calculations

PREN (Pitting Resistance) 25
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 160 to 310
150 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 2070
190 to 1150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 25 to 36
22 to 36
Strength to Weight: Bending, points 23 to 29
20 to 28
Thermal Diffusivity, mm2/s 3.8
4.0
Thermal Shock Resistance, points 15 to 21
13 to 22

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0 to 0.040
0 to 0.080
Chromium (Cr), % 19 to 21.5
13.5 to 16
Iron (Fe), % 59.5 to 67.4
49.1 to 59.5
Manganese (Mn), % 8.0 to 10
0 to 2.0
Molybdenum (Mo), % 0
1.0 to 1.5
Nickel (Ni), % 5.5 to 7.5
24 to 27
Nitrogen (N), % 0.15 to 0.4
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0
1.9 to 2.4
Vanadium (V), % 0
0.1 to 0.5

Comparable Variants