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EN 1.8868 Steel vs. EN 1.5638 Steel

Both EN 1.8868 steel and EN 1.5638 steel are iron alloys. Both are furnished in the quenched and tempered condition. They have a very high 97% of their average alloy composition in common. There are 30 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 1.8868 steel and the bottom bar is EN 1.5638 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
23
Fatigue Strength, MPa 260
290
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 540
580
Tensile Strength: Yield (Proof), MPa 350
410

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
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 48
52
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
4.0
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.6
1.7
Embodied Energy, MJ/kg 21
23
Embodied Water, L/kg 48
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
120
Resilience: Unit (Modulus of Resilience), kJ/m3 330
450
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
20
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 16
17

Alloy Composition

Boron (B), % 0 to 0.0050
0
Carbon (C), % 0 to 0.16
0.060 to 0.12
Chromium (Cr), % 0 to 0.3
0
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 96.4 to 100
94.4 to 96.4
Manganese (Mn), % 0 to 1.5
0.5 to 0.8
Molybdenum (Mo), % 0 to 0.25
0
Nickel (Ni), % 0 to 0.5
3.0 to 4.0
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.015
0
Phosphorus (P), % 0 to 0.020
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.6
Sulfur (S), % 0 to 0.0080
0 to 0.015
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0 to 0.060
0
Zirconium (Zr), % 0 to 0.050
0