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EN 1.7221 Steel vs. EN 1.8527 Steel

Both EN 1.7221 steel and EN 1.8527 steel are iron alloys. They have a very high 96% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.7221 steel and the bottom bar is EN 1.8527 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
270
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
16
Fatigue Strength, MPa 290 to 390
520
Impact Strength: V-Notched Charpy, J 20 to 38
39
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
74
Tensile Strength: Ultimate (UTS), MPa 650 to 780
900
Tensile Strength: Yield (Proof), MPa 430 to 630
800

Thermal Properties

Latent Heat of Fusion, J/g 250
260
Maximum Temperature: Mechanical, °C 420
490
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 44
41
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.8
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
4.0
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.7
Embodied Energy, MJ/kg 20
23
Embodied Water, L/kg 51
66

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 98
140
Resilience: Unit (Modulus of Resilience), kJ/m3 490 to 1050
1670
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 27
32
Strength to Weight: Bending, points 21 to 24
26
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 19 to 23
26

Alloy Composition

Carbon (C), % 0.22 to 0.29
0.040 to 0.12
Chromium (Cr), % 0.8 to 1.2
3.7 to 4.3
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 96.8 to 98.3
93.2 to 95.1
Manganese (Mn), % 0.5 to 0.8
0.85 to 1.2
Molybdenum (Mo), % 0.15 to 0.3
0.4 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.025
Silicon (Si), % 0 to 0.6
0 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.035