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ACI-ASTM CF16Fa Steel vs. SAE-AISI 4320 Steel

Both ACI-ASTM CF16Fa steel and SAE-AISI 4320 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 (3, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CF16Fa steel and the bottom bar is SAE-AISI 4320 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
160 to 240
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 28
21 to 29
Fatigue Strength, MPa 170
320
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 540
570 to 790
Tensile Strength: Yield (Proof), MPa 230
430 to 460

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 980
420
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
46
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.5

Otherwise Unclassified Properties

Base Metal Price, % relative 17
3.4
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.3
1.7
Embodied Energy, MJ/kg 47
22
Embodied Water, L/kg 150
52

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 140
480 to 560
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
20 to 28
Strength to Weight: Bending, points 19
19 to 24
Thermal Diffusivity, mm2/s 4.2
13
Thermal Shock Resistance, points 12
19 to 27

Alloy Composition

Carbon (C), % 0 to 0.16
0.17 to 0.22
Chromium (Cr), % 18 to 21
0.4 to 0.6
Iron (Fe), % 62.1 to 72.4
95.8 to 97
Manganese (Mn), % 0 to 1.5
0.45 to 0.65
Molybdenum (Mo), % 0.4 to 0.8
0.2 to 0.3
Nickel (Ni), % 9.0 to 12
1.7 to 2.0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 2.0
0.15 to 0.35
Sulfur (S), % 0.2 to 0.4
0 to 0.040