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ASTM A372 Grade L Steel vs. SAE-AISI P6 Steel

Both ASTM A372 grade L steel and SAE-AISI P6 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ASTM A372 grade L steel and the bottom bar is SAE-AISI P6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 1160
630 to 1930

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
43
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
9.0

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
4.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.7
1.8
Embodied Energy, MJ/kg 22
24
Embodied Water, L/kg 54
59

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 41
22 to 68
Strength to Weight: Bending, points 31
21 to 44
Thermal Diffusivity, mm2/s 12
11
Thermal Shock Resistance, points 34
21 to 63

Alloy Composition

Carbon (C), % 0.38 to 0.43
0.050 to 0.15
Chromium (Cr), % 0.7 to 0.9
1.3 to 1.8
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 95.2 to 96.3
92.9 to 95
Manganese (Mn), % 0.6 to 0.8
0.35 to 0.7
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 1.7 to 2.0
3.3 to 3.8
Phosphorus (P), % 0 to 0.015
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0.1 to 0.4
Sulfur (S), % 0 to 0.010
0 to 0.030