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EN 1.6511 Steel vs. EN 1.8821 Steel

Both EN 1.6511 steel and EN 1.8821 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 1.6511 steel and the bottom bar is EN 1.8821 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 300
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12
25
Fatigue Strength, MPa 480
280
Impact Strength: V-Notched Charpy, J 37
68
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 600
340
Tensile Strength: Ultimate (UTS), MPa 990
530
Tensile Strength: Yield (Proof), MPa 770
390

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 430
400
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 36
49
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.1
2.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.6
Embodied Energy, MJ/kg 21
21
Embodied Water, L/kg 53
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
120
Resilience: Unit (Modulus of Resilience), kJ/m3 1590
400
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 35
19
Strength to Weight: Bending, points 28
19
Thermal Diffusivity, mm2/s 9.9
13
Thermal Shock Resistance, points 29
16

Alloy Composition

Aluminum (Al), % 0
0.020 to 0.030
Carbon (C), % 0.32 to 0.4
0 to 0.14
Chromium (Cr), % 0.9 to 1.2
0
Iron (Fe), % 95.6 to 97.2
96.8 to 99.98
Manganese (Mn), % 0.5 to 0.8
0 to 1.6
Molybdenum (Mo), % 0.15 to 0.3
0 to 0.2
Nickel (Ni), % 0.9 to 1.2
0 to 0.5
Niobium (Nb), % 0
0 to 0.050
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0 to 0.4
0 to 0.5
Sulfur (S), % 0 to 0.035
0 to 0.010
Titanium (Ti), % 0
0 to 0.050
Vanadium (V), % 0
0 to 0.1