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EN 1.4587 Stainless Steel vs. AWS ER70S-A1

Both EN 1.4587 stainless steel and AWS ER70S-A1 are iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4587 stainless steel and the bottom bar is AWS ER70S-A1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
22
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 540
590
Tensile Strength: Yield (Proof), MPa 250
450

Thermal Properties

Latent Heat of Fusion, J/g 310
260
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 17
50
Thermal Expansion, µm/m-K 15
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.8
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.0
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 36
2.5
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.3
1.5
Embodied Energy, MJ/kg 87
20
Embodied Water, L/kg 230
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 150
540
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
21
Strength to Weight: Bending, points 18
20
Thermal Diffusivity, mm2/s 4.5
14
Thermal Shock Resistance, points 13
17

Alloy Composition


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Carbon (C), % 0 to 0.030
0 to 0.12
Chromium (Cr), % 24 to 26
0
Copper (Cu), % 2.0 to 3.0
0 to 0.35
Iron (Fe), % 32.7 to 41.9
96.1 to 99.3
Manganese (Mn), % 0 to 2.0
0 to 1.3
Molybdenum (Mo), % 4.0 to 5.0
0.4 to 0.65
Nickel (Ni), % 28 to 30
0 to 0.2
Nitrogen (N), % 0.15 to 0.25
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 1.0
0.3 to 0.7
Sulfur (S), % 0 to 0.025
0 to 0.025
Residuals, % 0
0 to 0.5