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EN 1.4439 Stainless Steel vs. R05252 Alloy

EN 1.4439 stainless steel belongs to the iron alloys classification, while R05252 alloy belongs to the otherwise unclassified metals. There are 18 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 EN 1.4439 stainless steel and the bottom bar is R05252 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
23
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 680
310
Tensile Strength: Yield (Proof), MPa 310
220

Thermal Properties

Latent Heat of Fusion, J/g 290
140
Specific Heat Capacity, J/kg-K 470
140
Thermal Expansion, µm/m-K 16
6.7

Otherwise Unclassified Properties

Density, g/cm3 7.9
17
Embodied Water, L/kg 160
600

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
63
Resilience: Unit (Modulus of Resilience), kJ/m3 240
120
Stiffness to Weight: Axial, points 14
6.5
Stiffness to Weight: Bending, points 25
12
Strength to Weight: Axial, points 24
5.2
Strength to Weight: Bending, points 22
6.1
Thermal Shock Resistance, points 15
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.010
Chromium (Cr), % 16.5 to 18.5
0
Hydrogen (H), % 0
0 to 0.0015
Iron (Fe), % 58.7 to 66.9
0 to 0.010
Manganese (Mn), % 0 to 2.0
0
Molybdenum (Mo), % 4.0 to 5.0
0 to 0.020
Nickel (Ni), % 12.5 to 14.5
0 to 0.010
Niobium (Nb), % 0
0 to 0.1
Nitrogen (N), % 0.12 to 0.22
0 to 0.010
Oxygen (O), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 1.0
0 to 0.0050
Sulfur (S), % 0 to 0.015
0
Tantalum (Ta), % 0
88.8 to 91
Titanium (Ti), % 0
0 to 0.010
Tungsten (W), % 0
9.0 to 11