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ACI-ASTM CF8 Steel vs. ASTM Grade HC Steel

Both ACI-ASTM CF8 steel and ASTM grade HC steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CF8 steel and the bottom bar is ASTM grade HC steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 55
6.0
Fatigue Strength, MPa 260
96
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 540
430
Tensile Strength: Yield (Proof), MPa 260
200

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 420
460
Maximum Temperature: Mechanical, °C 980
1100
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1430
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 15
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 16
14
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 3.1
2.8
Embodied Energy, MJ/kg 44
40
Embodied Water, L/kg 150
170

Common Calculations

PREN (Pitting Resistance) 20
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
21
Resilience: Unit (Modulus of Resilience), kJ/m3 160
95
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 19
16
Strength to Weight: Bending, points 19
16
Thermal Diffusivity, mm2/s 4.3
4.5
Thermal Shock Resistance, points 13
14

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.5
Chromium (Cr), % 18 to 21
26 to 30
Iron (Fe), % 63.8 to 74
61.9 to 74
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 8.0 to 11
0 to 4.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.040