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ASTM Grade HL Steel vs. ACI-ASTM CF8 Steel

Both ASTM grade HL steel and ACI-ASTM CF8 steel are iron alloys. They have 78% of their average alloy composition in common. There are 28 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 ASTM grade HL steel and the bottom bar is ACI-ASTM CF8 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
55
Fatigue Strength, MPa 150
260
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 500
540
Tensile Strength: Yield (Proof), MPa 270
260

Thermal Properties

Latent Heat of Fusion, J/g 320
300
Maximum Temperature: Corrosion, °C 460
420
Maximum Temperature: Mechanical, °C 1100
980
Melting Completion (Liquidus), °C 1390
1420
Melting Onset (Solidus), °C 1340
1430
Specific Heat Capacity, J/kg-K 490
480
Thermal Expansion, µm/m-K 17
15

Otherwise Unclassified Properties

Base Metal Price, % relative 27
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.5
3.1
Embodied Energy, MJ/kg 65
44
Embodied Water, L/kg 210
150

Common Calculations

PREN (Pitting Resistance) 31
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
240
Resilience: Unit (Modulus of Resilience), kJ/m3 180
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
19
Thermal Shock Resistance, points 11
13

Alloy Composition

Carbon (C), % 0.2 to 0.6
0 to 0.080
Chromium (Cr), % 28 to 32
18 to 21
Iron (Fe), % 40.8 to 53.8
63.8 to 74
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 18 to 22
8.0 to 11
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