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AISI 440C Stainless Steel vs. S66286 Stainless Steel

Both AISI 440C stainless steel and S66286 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 31 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 AISI 440C 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, % 2.0 to 14
17 to 40
Fatigue Strength, MPa 260 to 840
240 to 410
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
75
Shear Strength, MPa 430 to 1120
420 to 630
Tensile Strength: Ultimate (UTS), MPa 710 to 1970
620 to 1020
Tensile Strength: Yield (Proof), MPa 450 to 1900
280 to 670

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 390
780
Maximum Temperature: Mechanical, °C 870
920
Melting Completion (Liquidus), °C 1480
1430
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 22
15
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.2

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
26
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.2
6.0
Embodied Energy, MJ/kg 31
87
Embodied Water, L/kg 120
170

Common Calculations

PREN (Pitting Resistance) 18
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 39 to 88
150 to 200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 26 to 71
22 to 36
Strength to Weight: Bending, points 23 to 46
20 to 28
Thermal Diffusivity, mm2/s 6.0
4.0
Thermal Shock Resistance, points 26 to 71
13 to 22

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 1.0 to 1.2
0 to 0.080
Chromium (Cr), % 16 to 18
13.5 to 16
Iron (Fe), % 78 to 83.1
49.1 to 59.5
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.75
1.0 to 1.5
Nickel (Ni), % 0
24 to 27
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
1.9 to 2.4
Vanadium (V), % 0
0.1 to 0.5

Comparable Variants