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EN 1.8550 Steel vs. EN 1.1158 Steel

Both EN 1.8550 steel and EN 1.1158 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 32 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 1.8550 steel and the bottom bar is EN 1.1158 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
23 to 24
Fatigue Strength, MPa 470
170 to 220
Impact Strength: V-Notched Charpy, J 34
28 to 40
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 600
300 to 320
Tensile Strength: Ultimate (UTS), MPa 1000
470 to 500
Tensile Strength: Yield (Proof), MPa 760
240 to 310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 440
400
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
49
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 3.4
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.4
Embodied Energy, MJ/kg 23
19
Embodied Water, L/kg 67
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 1550
150 to 250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 36
17 to 18
Strength to Weight: Bending, points 29
17 to 18
Thermal Diffusivity, mm2/s 11
13
Thermal Shock Resistance, points 29
15 to 16

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.3 to 0.37
0.22 to 0.29
Chromium (Cr), % 1.5 to 1.8
0 to 0.4
Iron (Fe), % 94.4 to 96.3
97.6 to 99.38
Manganese (Mn), % 0.4 to 0.7
0.4 to 0.7
Molybdenum (Mo), % 0.15 to 0.25
0 to 0.1
Nickel (Ni), % 0.85 to 1.2
0 to 0.4
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.035