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EN 1.6311 Steel vs. EN 1.8902 Steel

Both EN 1.6311 steel and EN 1.8902 steel are iron alloys. Their average alloy composition is basically identical. 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 1.6311 steel and the bottom bar is EN 1.8902 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 19
21
Fatigue Strength, MPa 340
290
Impact Strength: V-Notched Charpy, J 51
58
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 400
380
Tensile Strength: Ultimate (UTS), MPa 650
600
Tensile Strength: Yield (Proof), MPa 490
420

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
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 39
44
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
7.6
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
2.6
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.8
Embodied Energy, MJ/kg 22
24
Embodied Water, L/kg 51
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 650
470
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23
21
Strength to Weight: Bending, points 21
20
Thermal Diffusivity, mm2/s 10
12
Thermal Shock Resistance, points 19
18

Alloy Composition

Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0.15 to 0.23
0 to 0.22
Chromium (Cr), % 0 to 0.5
0 to 0.35
Copper (Cu), % 0 to 0.2
0 to 0.6
Iron (Fe), % 95.9 to 98
95 to 99.05
Manganese (Mn), % 1.0 to 1.5
1.0 to 1.8
Molybdenum (Mo), % 0.45 to 0.6
0 to 0.13
Nickel (Ni), % 0.4 to 0.8
0 to 0.85
Niobium (Nb), % 0
0 to 0.060
Nitrogen (N), % 0 to 0.012
0 to 0.027
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.65
Sulfur (S), % 0 to 0.035
0 to 0.030
Titanium (Ti), % 0
0 to 0.060
Vanadium (V), % 0 to 0.020
0 to 0.22