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EN 1.8550 Steel vs. EN 1.5408 Steel

Both EN 1.8550 steel and EN 1.5408 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is EN 1.8550 steel and the bottom bar is EN 1.5408 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
140 to 160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 1000
460 to 1620

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 440
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 40
48
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
2.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.4
Embodied Energy, MJ/kg 23
19
Embodied Water, L/kg 67
48

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 36
16 to 57
Strength to Weight: Bending, points 29
17 to 39
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 29
13 to 48

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Boron (B), % 0
0.00080 to 0.0050
Carbon (C), % 0.3 to 0.37
0.28 to 0.32
Chromium (Cr), % 1.5 to 1.8
0 to 0.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 94.4 to 96.3
97.7 to 98.8
Manganese (Mn), % 0.4 to 0.7
0.8 to 1.0
Molybdenum (Mo), % 0.15 to 0.25
0.080 to 0.12
Nickel (Ni), % 0.85 to 1.2
0
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.3
Sulfur (S), % 0 to 0.035
0 to 0.025