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AWS E330 vs. ASTM A356 Grade 8

Both AWS E330 and ASTM A356 grade 8 are iron alloys. They have 49% 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 E330 and the bottom bar is ASTM A356 grade 8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 29
21
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 580
630

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1400
1470
Melting Onset (Solidus), °C 1350
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
38
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 31
3.5
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 5.4
2.0
Embodied Energy, MJ/kg 75
26
Embodied Water, L/kg 180
55

Common Calculations

PREN (Pitting Resistance) 17
4.7
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 20
22
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 3.2
10
Thermal Shock Resistance, points 16
18

Alloy Composition

Carbon (C), % 0.18 to 0.25
0 to 0.2
Chromium (Cr), % 14 to 17
1.0 to 1.5
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 40.7 to 51.8
95.4 to 97.4
Manganese (Mn), % 1.0 to 2.5
0.5 to 0.9
Molybdenum (Mo), % 0 to 0.75
0.9 to 1.2
Nickel (Ni), % 33 to 37
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