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EN 1.8550 Steel vs. EN 1.6553 Steel

Both EN 1.8550 steel and EN 1.6553 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 1.8550 steel and the bottom bar is EN 1.6553 steel.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 440
420
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
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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