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ASTM A372 Grade L Steel vs. ASTM A356 Grade 5

Both ASTM A372 grade L steel and ASTM A356 grade 5 are iron alloys. They have a very high 97% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 ASTM A356 grade 5.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14
25
Fatigue Strength, MPa 670
230
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 1160
550
Tensile Strength: Yield (Proof), MPa 1040
310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 430
420
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 44
49
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
2.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.7
1.5
Embodied Energy, MJ/kg 22
20
Embodied Water, L/kg 54
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 2890
250
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 41
20
Strength to Weight: Bending, points 31
19
Thermal Diffusivity, mm2/s 12
13
Thermal Shock Resistance, points 34
16

Alloy Composition

Carbon (C), % 0.38 to 0.43
0 to 0.25
Chromium (Cr), % 0.7 to 0.9
0.4 to 0.7
Iron (Fe), % 95.2 to 96.3
97.1 to 99.2
Manganese (Mn), % 0.6 to 0.8
0 to 0.7
Molybdenum (Mo), % 0.2 to 0.3
0.4 to 0.6
Nickel (Ni), % 1.7 to 2.0
0
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0.15 to 0.35
0 to 0.6
Sulfur (S), % 0 to 0.010
0 to 0.030