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EN 1.6553 Steel vs. EN 1.8550 Steel

Both EN 1.6553 steel and EN 1.8550 steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.6553 steel and the bottom bar is EN 1.8550 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 240
300
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19 to 21
11
Fatigue Strength, MPa 330 to 460
470
Impact Strength: V-Notched Charpy, J 30
34
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 710 to 800
1000
Tensile Strength: Yield (Proof), MPa 470 to 670
760

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
440
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 39
40
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.8

Otherwise Unclassified Properties

Base Metal Price, % relative 2.7
3.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.7
Embodied Energy, MJ/kg 21
23
Embodied Water, L/kg 51
67

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 150
100
Resilience: Unit (Modulus of Resilience), kJ/m3 600 to 1190
1550
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 25 to 28
36
Strength to Weight: Bending, points 23 to 24
29
Thermal Diffusivity, mm2/s 10
11
Thermal Shock Resistance, points 21 to 23
29

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.2
Carbon (C), % 0.23 to 0.28
0.3 to 0.37
Chromium (Cr), % 0.4 to 0.8
1.5 to 1.8
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 95.6 to 98.2
94.4 to 96.3
Manganese (Mn), % 0.6 to 1.0
0.4 to 0.7
Molybdenum (Mo), % 0.15 to 0.3
0.15 to 0.25
Nickel (Ni), % 0.4 to 0.8
0.85 to 1.2
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0 to 0.8
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.035
Vanadium (V), % 0 to 0.030
0