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EN 1.8831 Steel vs. EN 1.8870 Steel

Both EN 1.8831 steel and EN 1.8870 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is EN 1.8831 steel and the bottom bar is EN 1.8870 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
21
Fatigue Strength, MPa 330
310
Impact Strength: V-Notched Charpy, J 110
67
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 390
380
Tensile Strength: Ultimate (UTS), MPa 630
610
Tensile Strength: Yield (Proof), MPa 480
450

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 49
39
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
2.8
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.6
1.7
Embodied Energy, MJ/kg 21
22
Embodied Water, L/kg 48
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 620
530
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
22
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 13
10
Thermal Shock Resistance, points 18
18

Alloy Composition

Aluminum (Al), % 0.020 to 0.040
0
Boron (B), % 0
0 to 0.0050
Carbon (C), % 0 to 0.16
0 to 0.18
Chromium (Cr), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 96.6 to 99.98
95.1 to 100
Manganese (Mn), % 0 to 1.7
0 to 1.7
Molybdenum (Mo), % 0 to 0.2
0 to 0.5
Nickel (Ni), % 0 to 0.5
0 to 1.0
Niobium (Nb), % 0 to 0.050
0 to 0.050
Nitrogen (N), % 0 to 0.020
0 to 0.015
Phosphorus (P), % 0 to 0.020
0 to 0.025
Silicon (Si), % 0 to 0.6
0 to 0.5
Sulfur (S), % 0 to 0.0050
0 to 0.010
Titanium (Ti), % 0 to 0.050
0 to 0.030
Vanadium (V), % 0 to 0.1
0 to 0.080
Zirconium (Zr), % 0
0 to 0.050