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AWS E309LMo vs. ASTM A356 Grade 8

Both AWS E309LMo and ASTM A356 grade 8 are iron alloys. They have 62% of their average alloy composition in common. There are 25 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 AWS E309LMo and the bottom bar is ASTM A356 grade 8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
21
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 79
73
Tensile Strength: Ultimate (UTS), MPa 580
630

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1430
1470
Melting Onset (Solidus), °C 1390
1430
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
38
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 22
3.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.2
2.0
Embodied Energy, MJ/kg 59
26
Embodied Water, L/kg 180
55

Common Calculations

PREN (Pitting Resistance) 32
4.7
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 21
22
Strength to Weight: Bending, points 20
21
Thermal Diffusivity, mm2/s 3.9
10
Thermal Shock Resistance, points 15
18

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.2
Chromium (Cr), % 22 to 25
1.0 to 1.5
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 53.6 to 63.5
95.4 to 97.4
Manganese (Mn), % 0.5 to 2.5
0.5 to 0.9
Molybdenum (Mo), % 2.0 to 3.0
0.9 to 1.2
Nickel (Ni), % 12 to 14
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.2 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.050 to 0.15