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SAE-AISI S7 Steel vs. ASTM Grade HL Steel

Both SAE-AISI S7 steel and ASTM grade HL steel are iron alloys. They have 52% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI S7 steel and the bottom bar is ASTM grade HL steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 74
80
Tensile Strength: Ultimate (UTS), MPa 670 to 2030
500

Thermal Properties

Latent Heat of Fusion, J/g 260
320
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1420
1340
Specific Heat Capacity, J/kg-K 470
490
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 5.0
27
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.3
4.5
Embodied Energy, MJ/kg 31
65
Embodied Water, L/kg 65
210

Common Calculations

PREN (Pitting Resistance) 8.4
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24 to 72
18
Strength to Weight: Bending, points 22 to 46
18
Thermal Shock Resistance, points 22 to 66
11

Alloy Composition

Carbon (C), % 0.45 to 0.55
0.2 to 0.6
Chromium (Cr), % 3.0 to 3.5
28 to 32
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 91.6 to 94.9
40.8 to 53.8
Manganese (Mn), % 0.2 to 0.9
0 to 2.0
Molybdenum (Mo), % 1.3 to 1.8
0 to 0.5
Nickel (Ni), % 0
18 to 22
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Vanadium (V), % 0 to 0.3
0