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EN 1.7221 Steel vs. ASTM A356 Grade 5

Both EN 1.7221 steel and ASTM A356 grade 5 are iron alloys. Their average alloy composition is basically identical. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7221 steel and the bottom bar is ASTM A356 grade 5.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 11 to 17
25
Fatigue Strength, MPa 290 to 390
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 650 to 780
550
Tensile Strength: Yield (Proof), MPa 430 to 630
310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 420
420
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
49
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
2.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.5
Embodied Energy, MJ/kg 20
20
Embodied Water, L/kg 51
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 98
120
Resilience: Unit (Modulus of Resilience), kJ/m3 490 to 1050
250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 23 to 27
20
Strength to Weight: Bending, points 21 to 24
19
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 19 to 23
16

Alloy Composition

Carbon (C), % 0.22 to 0.29
0 to 0.25
Chromium (Cr), % 0.8 to 1.2
0.4 to 0.7
Iron (Fe), % 96.8 to 98.3
97.1 to 99.2
Manganese (Mn), % 0.5 to 0.8
0 to 0.7
Molybdenum (Mo), % 0.15 to 0.3
0.4 to 0.6
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.6
0 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030