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EN 1.8550 Steel vs. EN 1.5522 Steel

Both EN 1.8550 steel and EN 1.5522 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 1.5522 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
140 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
11 to 21
Fatigue Strength, MPa 470
210 to 330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 600
320 to 380
Tensile Strength: Ultimate (UTS), MPa 1000
450 to 1490
Tensile Strength: Yield (Proof), MPa 760
300 to 520

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
51
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
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
1.9
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
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
45 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
250 to 720
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 36
16 to 53
Strength to Weight: Bending, points 29
17 to 37
Thermal Diffusivity, mm2/s 11
14
Thermal Shock Resistance, points 29
13 to 44

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
0.2 to 0.24
Chromium (Cr), % 1.5 to 1.8
0
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 94.4 to 96.3
98 to 98.9
Manganese (Mn), % 0.4 to 0.7
0.9 to 1.2
Molybdenum (Mo), % 0.15 to 0.25
0
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