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SAE-AISI D5 Steel vs. ACI-ASTM CF20 Steel

Both SAE-AISI D5 steel and ACI-ASTM CF20 steel are iron alloys. They have 82% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI D5 steel and the bottom bar is ACI-ASTM CF20 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 5.4 to 14
50
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
77
Tensile Strength: Ultimate (UTS), MPa 770 to 2030
530

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
16
Thermal Expansion, µm/m-K 11
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 4.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 4.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
16
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 3.5
3.1
Embodied Energy, MJ/kg 51
44
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 15
20
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28 to 73
19
Strength to Weight: Bending, points 24 to 46
19
Thermal Diffusivity, mm2/s 7.4
4.3
Thermal Shock Resistance, points 26 to 67
11

Alloy Composition

Carbon (C), % 1.4 to 1.6
0 to 0.2
Chromium (Cr), % 11 to 13
18 to 21
Cobalt (Co), % 2.5 to 3.5
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 77.9 to 84.4
64.2 to 74
Manganese (Mn), % 0 to 0.6
0 to 1.5
Molybdenum (Mo), % 0.7 to 1.2
0
Nickel (Ni), % 0 to 0.3
8.0 to 11
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 0.6
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0 to 1.0
0