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EN 1.8818 Steel vs. EN 1.8823 Steel

Both EN 1.8818 steel and EN 1.8823 steel are iron alloys. Both are furnished in the thermomechanically rolled condition. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.8818 steel and the bottom bar is EN 1.8823 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
25
Fatigue Strength, MPa 200
270
Impact Strength: V-Notched Charpy, J 48
48
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 280
340
Tensile Strength: Ultimate (UTS), MPa 440
530
Tensile Strength: Yield (Proof), MPa 270
360

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
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
47
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
2.4
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.6
Embodied Energy, MJ/kg 21
22
Embodied Water, L/kg 49
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 200
360
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16
19
Strength to Weight: Bending, points 16
19
Thermal Diffusivity, mm2/s 13
13
Thermal Shock Resistance, points 13
16

Alloy Composition

Aluminum (Al), % 0.015 to 0.034
0.015 to 0.034
Carbon (C), % 0 to 0.15
0 to 0.16
Chromium (Cr), % 0 to 0.35
0 to 0.35
Copper (Cu), % 0 to 0.6
0 to 0.6
Iron (Fe), % 95.9 to 99.985
95.6 to 99.985
Manganese (Mn), % 0 to 1.6
0 to 1.7
Molybdenum (Mo), % 0 to 0.13
0 to 0.13
Nickel (Ni), % 0 to 0.35
0 to 0.55
Niobium (Nb), % 0 to 0.060
0 to 0.060
Nitrogen (N), % 0 to 0.017
0 to 0.017
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.55
0 to 0.55
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.060
0 to 0.060
Vanadium (V), % 0 to 0.1
0 to 0.12