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EN 1.1221 Steel vs. EN 1.1158 Steel

Both EN 1.1221 steel and EN 1.1158 steel are iron alloys. Their average alloy composition is basically identical. There are 31 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 1.1221 steel and the bottom bar is EN 1.1158 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 250
140 to 150
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 10 to 21
23 to 24
Fatigue Strength, MPa 240 to 340
170 to 220
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 72
73
Shear Strength, MPa 450 to 520
300 to 320
Tensile Strength: Ultimate (UTS), MPa 730 to 870
470 to 500
Tensile Strength: Yield (Proof), MPa 390 to 550
240 to 310

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 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 48
49
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
2.1
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
1.4
Embodied Energy, MJ/kg 19
19
Embodied Water, L/kg 47
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 67 to 130
89 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 410 to 800
150 to 250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26 to 31
17 to 18
Strength to Weight: Bending, points 23 to 26
17 to 18
Thermal Diffusivity, mm2/s 13
13
Thermal Shock Resistance, points 23 to 28
15 to 16

Alloy Composition

Carbon (C), % 0.57 to 0.65
0.22 to 0.29
Chromium (Cr), % 0 to 0.4
0 to 0.4
Iron (Fe), % 97.1 to 98.8
97.6 to 99.38
Manganese (Mn), % 0.6 to 0.9
0.4 to 0.7
Molybdenum (Mo), % 0 to 0.1
0 to 0.1
Nickel (Ni), % 0 to 0.4
0 to 0.4
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 0.4
Sulfur (S), % 0 to 0.035
0 to 0.035

Comparable Variants