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ASTM A372 Grade L Steel vs. SAE-AISI 1090 Steel

Both ASTM A372 grade L steel and SAE-AISI 1090 steel are iron alloys. They have a very high 97% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 1090 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
220 to 280
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
11
Fatigue Strength, MPa 670
320 to 380
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
72
Shear Strength, MPa 700
470 to 570
Tensile Strength: Ultimate (UTS), MPa 1160
790 to 950
Tensile Strength: Yield (Proof), MPa 1040
520 to 610

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Maximum Temperature: Mechanical, °C 430
400
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
50
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.7
1.4
Embodied Energy, MJ/kg 22
19
Embodied Water, L/kg 54
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
82 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 2890
730 to 1000
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 41
28 to 34
Strength to Weight: Bending, points 31
24 to 27
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 34
25 to 31

Alloy Composition

Carbon (C), % 0.38 to 0.43
0.85 to 1.0
Chromium (Cr), % 0.7 to 0.9
0
Iron (Fe), % 95.2 to 96.3
98 to 98.6
Manganese (Mn), % 0.6 to 0.8
0.6 to 0.9
Molybdenum (Mo), % 0.2 to 0.3
0
Nickel (Ni), % 1.7 to 2.0
0
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.010
0 to 0.050