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ASTM Grade HL Steel vs. ACI-ASTM CA6NM Steel

Both ASTM grade HL steel and ACI-ASTM CA6NM steel are iron alloys. They have 65% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (5, 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 CA6NM steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
250
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
17
Fatigue Strength, MPa 150
380
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 80
76
Tensile Strength: Ultimate (UTS), MPa 500
850
Tensile Strength: Yield (Proof), MPa 270
620

Thermal Properties

Latent Heat of Fusion, J/g 320
280
Maximum Temperature: Corrosion, °C 460
390
Maximum Temperature: Mechanical, °C 1100
770
Melting Completion (Liquidus), °C 1390
1450
Melting Onset (Solidus), °C 1340
1400
Specific Heat Capacity, J/kg-K 490
480
Thermal Expansion, µm/m-K 17
10

Otherwise Unclassified Properties

Base Metal Price, % relative 27
10
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.5
2.5
Embodied Energy, MJ/kg 65
34
Embodied Water, L/kg 210
110

Common Calculations

PREN (Pitting Resistance) 31
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
130
Resilience: Unit (Modulus of Resilience), kJ/m3 180
1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
30
Strength to Weight: Bending, points 18
26
Thermal Shock Resistance, points 11
31

Alloy Composition

Carbon (C), % 0.2 to 0.6
0 to 0.060
Chromium (Cr), % 28 to 32
11.5 to 14
Iron (Fe), % 40.8 to 53.8
78.4 to 84.6
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.4 to 1.0
Nickel (Ni), % 18 to 22
3.5 to 4.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030