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EN 1.8915 Steel vs. ACI-ASTM CF20 Steel

Both EN 1.8915 steel and ACI-ASTM CF20 steel are iron alloys. They have 71% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.8915 steel and the bottom bar is ACI-ASTM CF20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
160
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 19
50
Fatigue Strength, MPa 340
240
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 640
530
Tensile Strength: Yield (Proof), MPa 490
250

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
970
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
16
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.5
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
3.1
Embodied Energy, MJ/kg 24
44
Embodied Water, L/kg 51
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
220
Resilience: Unit (Modulus of Resilience), kJ/m3 640
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23
19
Strength to Weight: Bending, points 21
19
Thermal Diffusivity, mm2/s 12
4.3
Thermal Shock Resistance, points 19
11

Alloy Composition

Aluminum (Al), % 0.020 to 0.050
0
Carbon (C), % 0 to 0.2
0 to 0.2
Chromium (Cr), % 0 to 0.3
18 to 21
Copper (Cu), % 0 to 0.7
0
Iron (Fe), % 95.2 to 98.9
64.2 to 74
Manganese (Mn), % 1.1 to 1.7
0 to 1.5
Molybdenum (Mo), % 0 to 0.1
0
Nickel (Ni), % 0 to 0.8
8.0 to 11
Niobium (Nb), % 0 to 0.050
0
Nitrogen (N), % 0 to 0.025
0
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 2.0
Sulfur (S), % 0 to 0.0080
0 to 0.040
Titanium (Ti), % 0 to 0.030
0
Vanadium (V), % 0 to 0.2
0