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EN 1.6554 Steel vs. EN 1.8868 Steel

Both EN 1.6554 steel and EN 1.8868 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 (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.6554 steel and the bottom bar is EN 1.8868 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230 to 280
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 21
25
Fatigue Strength, MPa 380 to 520
260
Impact Strength: V-Notched Charpy, J 30 to 45
90
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 780 to 930
540
Tensile Strength: Yield (Proof), MPa 550 to 790
350

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
410
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 40
48
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.7
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
2.4
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.7
1.6
Embodied Energy, MJ/kg 22
21
Embodied Water, L/kg 53
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 810 to 1650
330
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 33
19
Strength to Weight: Bending, points 24 to 27
19
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 23 to 27
16

Alloy Composition

Boron (B), % 0
0 to 0.0050
Carbon (C), % 0.23 to 0.28
0 to 0.16
Chromium (Cr), % 0.7 to 0.9
0 to 0.3
Copper (Cu), % 0 to 0.3
0 to 0.3
Iron (Fe), % 94.6 to 97.3
96.4 to 100
Manganese (Mn), % 0.6 to 0.9
0 to 1.5
Molybdenum (Mo), % 0.2 to 0.3
0 to 0.25
Nickel (Ni), % 1.0 to 2.0
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.030
0 to 0.020
Silicon (Si), % 0 to 0.6
0 to 0.4
Sulfur (S), % 0 to 0.025
0 to 0.0080
Titanium (Ti), % 0
0 to 0.030
Vanadium (V), % 0 to 0.030
0 to 0.060
Zirconium (Zr), % 0
0 to 0.050