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S17400 Stainless Steel vs. R05255 Alloy

S17400 stainless steel belongs to the iron alloys classification, while R05255 alloy belongs to the otherwise unclassified metals. There are 20 material properties with values for both materials. Properties with values for just one material (16, 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 S17400 stainless steel and the bottom bar is R05255 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 21
20
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 75
70
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
540
Tensile Strength: Yield (Proof), MPa 580 to 1250
450

Thermal Properties

Latent Heat of Fusion, J/g 280
140
Specific Heat Capacity, J/kg-K 480
140
Thermal Conductivity, W/m-K 17
59
Thermal Expansion, µm/m-K 11
6.6

Otherwise Unclassified Properties

Density, g/cm3 7.8
17
Embodied Water, L/kg 130
630

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
100
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
530
Stiffness to Weight: Axial, points 14
6.3
Stiffness to Weight: Bending, points 25
11
Strength to Weight: Axial, points 32 to 49
9.1
Strength to Weight: Bending, points 27 to 35
8.9
Thermal Diffusivity, mm2/s 4.5
25
Thermal Shock Resistance, points 30 to 46
31

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.010
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 3.0 to 5.0
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 70.4 to 78.9
0 to 0.010
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0
0 to 0.020
Nickel (Ni), % 3.0 to 5.0
0 to 0.010
Niobium (Nb), % 0.15 to 0.45
0 to 0.5
Nitrogen (N), % 0
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.030
0
Tantalum (Ta), % 0
95.9 to 98
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
2.0 to 3.5