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ASTM Grade HL Steel vs. ASTM A372 Grade A Steel

Both ASTM grade HL steel and ASTM A372 grade A steel are iron alloys. They have 48% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HL steel and the bottom bar is ASTM A372 grade A steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
140
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
22
Fatigue Strength, MPa 150
190
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 500
500
Tensile Strength: Yield (Proof), MPa 270
270

Thermal Properties

Latent Heat of Fusion, J/g 320
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1390
1460
Melting Onset (Solidus), °C 1340
1420
Specific Heat Capacity, J/kg-K 490
470
Thermal Expansion, µm/m-K 17
12

Otherwise Unclassified Properties

Base Metal Price, % relative 27
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.5
1.4
Embodied Energy, MJ/kg 65
18
Embodied Water, L/kg 210
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
95
Resilience: Unit (Modulus of Resilience), kJ/m3 180
200
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 18
18
Thermal Shock Resistance, points 11
16

Alloy Composition

Carbon (C), % 0.2 to 0.6
0 to 0.3
Chromium (Cr), % 28 to 32
0
Iron (Fe), % 40.8 to 53.8
98.3 to 99.85
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 18 to 22
0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 2.0
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.010