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EN 1.8821 Steel vs. EN 1.8891 Steel

Both EN 1.8821 steel and EN 1.8891 steel are iron alloys. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.8821 steel and the bottom bar is EN 1.8891 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
180
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
19
Fatigue Strength, MPa 280
330
Impact Strength: V-Notched Charpy, J 68
40
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 340
380
Tensile Strength: Ultimate (UTS), MPa 530
610
Tensile Strength: Yield (Proof), MPa 390
480

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
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 49
46
Thermal Expansion, µm/m-K 13
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
2.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.6
1.7
Embodied Energy, MJ/kg 21
24
Embodied Water, L/kg 48
51

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
110
Resilience: Unit (Modulus of Resilience), kJ/m3 400
630
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 19
22
Strength to Weight: Bending, points 19
20
Thermal Diffusivity, mm2/s 13
12
Thermal Shock Resistance, points 16
18

Alloy Composition

Aluminum (Al), % 0.020 to 0.030
0.020 to 0.060
Carbon (C), % 0 to 0.14
0 to 0.2
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 0
0 to 0.7
Iron (Fe), % 96.8 to 99.98
95.2 to 99
Manganese (Mn), % 0 to 1.6
1.0 to 1.7
Molybdenum (Mo), % 0 to 0.2
0 to 0.1
Nickel (Ni), % 0 to 0.5
0 to 0.8
Niobium (Nb), % 0 to 0.050
0 to 0.050
Nitrogen (N), % 0 to 0.015
0 to 0.025
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0 to 0.050
0 to 0.030
Vanadium (V), % 0 to 0.1
0 to 0.2