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ACI-ASTM CF16F Steel vs. ASTM A356 Grade 8

Both ACI-ASTM CF16F steel and ASTM A356 grade 8 are iron alloys. Both are furnished in the heat treated (HT) condition. They have 70% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CF16F steel and the bottom bar is ASTM A356 grade 8.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 50
21
Fatigue Strength, MPa 270
270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 530
630
Tensile Strength: Yield (Proof), MPa 280
390

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Maximum Temperature: Mechanical, °C 980
440
Melting Completion (Liquidus), °C 1420
1470
Melting Onset (Solidus), °C 1400
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
38
Thermal Expansion, µm/m-K 16
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 18
3.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.4
2.0
Embodied Energy, MJ/kg 47
26
Embodied Water, L/kg 150
55

Common Calculations

PREN (Pitting Resistance) 22
4.7
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
110
Resilience: Unit (Modulus of Resilience), kJ/m3 190
390
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
22
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 4.3
10
Thermal Shock Resistance, points 12
18

Alloy Composition

Carbon (C), % 0 to 0.16
0 to 0.2
Chromium (Cr), % 18 to 21
1.0 to 1.5
Iron (Fe), % 61.3 to 72.8
95.4 to 97.4
Manganese (Mn), % 0 to 1.5
0.5 to 0.9
Molybdenum (Mo), % 0 to 1.5
0.9 to 1.2
Nickel (Ni), % 9.0 to 12
0
Phosphorus (P), % 0 to 0.17
0 to 0.035
Selenium (Se), % 0.2 to 0.35
0
Silicon (Si), % 0 to 2.0
0.2 to 0.6
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0
0.050 to 0.15