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R05255 Alloy vs. S66286 Stainless Steel

R05255 alloy belongs to the otherwise unclassified metals classification, while S66286 stainless steel belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is R05255 alloy and the bottom bar is S66286 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 20
17 to 40
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 70
75
Tensile Strength: Ultimate (UTS), MPa 540
620 to 1020
Tensile Strength: Yield (Proof), MPa 450
280 to 670

Thermal Properties

Latent Heat of Fusion, J/g 140
300
Specific Heat Capacity, J/kg-K 140
470
Thermal Conductivity, W/m-K 59
15
Thermal Expansion, µm/m-K 6.6
17

Otherwise Unclassified Properties

Density, g/cm3 17
7.9
Embodied Water, L/kg 630
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
150 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 530
190 to 1150
Stiffness to Weight: Axial, points 6.3
14
Stiffness to Weight: Bending, points 11
24
Strength to Weight: Axial, points 9.1
22 to 36
Strength to Weight: Bending, points 8.9
20 to 28
Thermal Diffusivity, mm2/s 25
4.0
Thermal Shock Resistance, points 31
13 to 22

Alloy Composition

Aluminum (Al), % 0
0 to 0.35
Boron (B), % 0
0.0010 to 0.010
Carbon (C), % 0 to 0.010
0 to 0.080
Chromium (Cr), % 0
13.5 to 16
Hydrogen (H), % 0 to 0.0015
0
Iron (Fe), % 0 to 0.010
49.1 to 59.5
Manganese (Mn), % 0
0 to 2.0
Molybdenum (Mo), % 0 to 0.020
1.0 to 1.5
Nickel (Ni), % 0 to 0.010
24 to 27
Niobium (Nb), % 0 to 0.5
0
Nitrogen (N), % 0 to 0.010
0
Oxygen (O), % 0 to 0.015
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.0050
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Tantalum (Ta), % 95.9 to 98
0
Titanium (Ti), % 0 to 0.010
1.9 to 2.4
Tungsten (W), % 2.0 to 3.5
0
Vanadium (V), % 0
0.1 to 0.5