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EN 1.1170 Steel vs. EN 1.8865 Steel

Both EN 1.1170 steel and EN 1.8865 steel are iron alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.1170 steel and the bottom bar is EN 1.8865 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 210
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16 to 17
19
Fatigue Strength, MPa 220 to 330
340
Impact Strength: V-Notched Charpy, J 28 to 35
110
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 390 to 450
410
Tensile Strength: Ultimate (UTS), MPa 640 to 730
660
Tensile Strength: Yield (Proof), MPa 330 to 500
500

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
420
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 50
39
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
3.2
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.8
Embodied Energy, MJ/kg 19
24
Embodied Water, L/kg 49
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 100
120
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 670
670
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 26
23
Strength to Weight: Bending, points 21 to 23
21
Thermal Diffusivity, mm2/s 13
10
Thermal Shock Resistance, points 20 to 23
19

Alloy Composition

Boron (B), % 0
0 to 0.0050
Carbon (C), % 0.25 to 0.32
0 to 0.18
Chromium (Cr), % 0 to 0.4
0 to 1.0
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 96.7 to 98.5
93.6 to 100
Manganese (Mn), % 1.3 to 1.7
0 to 1.7
Molybdenum (Mo), % 0 to 0.1
0 to 0.7
Nickel (Ni), % 0 to 0.4
0 to 1.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.035
0 to 0.020
Silicon (Si), % 0 to 0.4
0 to 0.6
Sulfur (S), % 0 to 0.035
0 to 0.0050
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.080
Zirconium (Zr), % 0
0 to 0.15