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EN 1.4959 Stainless Steel vs. 295.0 Aluminum

EN 1.4959 stainless steel belongs to the iron alloys classification, while 295.0 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 1.4959 stainless steel and the bottom bar is 295.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
71
Elongation at Break, % 40
2.0 to 7.2
Fatigue Strength, MPa 170
44 to 55
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
27
Shear Strength, MPa 430
180 to 230
Tensile Strength: Ultimate (UTS), MPa 630
230 to 280
Tensile Strength: Yield (Proof), MPa 190
100 to 220

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Maximum Temperature: Mechanical, °C 1090
170
Melting Completion (Liquidus), °C 1400
640
Melting Onset (Solidus), °C 1350
530
Specific Heat Capacity, J/kg-K 480
880
Thermal Conductivity, W/m-K 12
140
Thermal Expansion, µm/m-K 15
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
35
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
100

Otherwise Unclassified Properties

Base Metal Price, % relative 31
10
Density, g/cm3 8.0
3.0
Embodied Carbon, kg CO2/kg material 5.4
7.9
Embodied Energy, MJ/kg 76
150
Embodied Water, L/kg 200
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
5.2 to 13
Resilience: Unit (Modulus of Resilience), kJ/m3 96
77 to 340
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 22
21 to 26
Strength to Weight: Bending, points 20
27 to 32
Thermal Diffusivity, mm2/s 3.2
54
Thermal Shock Resistance, points 15
9.8 to 12

Alloy Composition

Aluminum (Al), % 0.25 to 0.65
91.4 to 95.3
Carbon (C), % 0.050 to 0.1
0
Chromium (Cr), % 19 to 22
0
Cobalt (Co), % 0 to 0.5
0
Copper (Cu), % 0 to 0.5
4.0 to 5.0
Iron (Fe), % 39.4 to 50.5
0 to 1.0
Magnesium (Mg), % 0
0 to 0.030
Manganese (Mn), % 0 to 1.5
0 to 0.35
Nickel (Ni), % 30 to 34
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.015
0
Silicon (Si), % 0 to 0.7
0.7 to 1.5
Sulfur (S), % 0 to 0.010
0
Titanium (Ti), % 0.25 to 0.65
0 to 0.25
Zinc (Zn), % 0
0 to 0.35
Residuals, % 0
0 to 0.15