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EN 1.8509 Steel vs. EN 1.1181 Steel

Both EN 1.8509 steel and EN 1.1181 steel are iron alloys. They have a very high 98% 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 1.8509 steel and the bottom bar is EN 1.1181 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 340
160 to 180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11
19 to 20
Fatigue Strength, MPa 580
190 to 260
Impact Strength: V-Notched Charpy, J 29
23 to 38
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 680
350 to 390
Tensile Strength: Ultimate (UTS), MPa 1130
560 to 620
Tensile Strength: Yield (Proof), MPa 940
280 to 380

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 39
42
Thermal Expansion, µm/m-K 13
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.8
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.4
Embodied Energy, MJ/kg 22
19
Embodied Water, L/kg 65
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
90 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 2340
210 to 380
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 40
20 to 22
Strength to Weight: Bending, points 31
19 to 21
Thermal Diffusivity, mm2/s 10
11
Thermal Shock Resistance, points 33
19 to 21

Alloy Composition

Aluminum (Al), % 0.8 to 1.2
0
Carbon (C), % 0.38 to 0.45
0.32 to 0.39
Chromium (Cr), % 1.5 to 1.8
0 to 0.4
Iron (Fe), % 95.5 to 97.1
97.4 to 99.18
Manganese (Mn), % 0.4 to 0.7
0.5 to 0.8
Molybdenum (Mo), % 0.2 to 0.35
0 to 0.1
Nickel (Ni), % 0
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