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EN 1.1158 Steel vs. EN 1.8824 Steel

Both EN 1.1158 steel and EN 1.8824 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.1158 steel and the bottom bar is EN 1.8824 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140 to 150
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23 to 24
22
Fatigue Strength, MPa 170 to 220
310
Impact Strength: V-Notched Charpy, J 28 to 40
67
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 300 to 320
370
Tensile Strength: Ultimate (UTS), MPa 470 to 500
580
Tensile Strength: Yield (Proof), MPa 240 to 310
440

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
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 49
49
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.6
Embodied Energy, MJ/kg 19
21
Embodied Water, L/kg 47
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89 to 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 250
530
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17 to 18
21
Strength to Weight: Bending, points 17 to 18
20
Thermal Diffusivity, mm2/s 13
13
Thermal Shock Resistance, points 15 to 16
17

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.040
Carbon (C), % 0.22 to 0.29
0 to 0.16
Chromium (Cr), % 0 to 0.4
0
Iron (Fe), % 97.6 to 99.38
96.6 to 99.98
Manganese (Mn), % 0.4 to 0.7
0 to 1.7
Molybdenum (Mo), % 0 to 0.1
0 to 0.2
Nickel (Ni), % 0 to 0.4
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.035
0 to 0.010
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.1