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EN 1.7221 Steel vs. ACI-ASTM CF16Fa Steel

Both EN 1.7221 steel and ACI-ASTM CF16Fa steel are iron alloys. They have 70% of their average alloy composition in common. 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 ACI-ASTM CF16Fa steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 230
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 17
28
Fatigue Strength, MPa 290 to 390
170
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 650 to 780
540
Tensile Strength: Yield (Proof), MPa 430 to 630
230

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 420
980
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 44
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
17
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
3.3
Embodied Energy, MJ/kg 20
47
Embodied Water, L/kg 51
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 98
120
Resilience: Unit (Modulus of Resilience), kJ/m3 490 to 1050
140
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 27
19
Strength to Weight: Bending, points 21 to 24
19
Thermal Diffusivity, mm2/s 12
4.2
Thermal Shock Resistance, points 19 to 23
12

Alloy Composition

Carbon (C), % 0.22 to 0.29
0 to 0.16
Chromium (Cr), % 0.8 to 1.2
18 to 21
Iron (Fe), % 96.8 to 98.3
62.1 to 72.4
Manganese (Mn), % 0.5 to 0.8
0 to 1.5
Molybdenum (Mo), % 0.15 to 0.3
0.4 to 0.8
Nickel (Ni), % 0
9.0 to 12
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 2.0
Sulfur (S), % 0 to 0.030
0.2 to 0.4