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AWS E630 vs. ASTM A356 Grade 9

Both AWS E630 and ASTM A356 grade 9 are iron alloys. They have 76% 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 E630 and the bottom bar is ASTM A356 grade 9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 8.0
17
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 1040
670

Thermal Properties

Latent Heat of Fusion, J/g 280
260
Melting Completion (Liquidus), °C 1430
1470
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 17
41
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
3.6
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.8
2.4
Embodied Energy, MJ/kg 40
33
Embodied Water, L/kg 140
56

Common Calculations

PREN (Pitting Resistance) 18
4.7
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 37
24
Strength to Weight: Bending, points 29
22
Thermal Diffusivity, mm2/s 4.5
11
Thermal Shock Resistance, points 28
19

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.2
Chromium (Cr), % 16 to 16.8
1.0 to 1.5
Copper (Cu), % 3.3 to 4.0
0
Iron (Fe), % 71.6 to 75.9
95.2 to 97.2
Manganese (Mn), % 0.25 to 0.75
0.5 to 0.9
Molybdenum (Mo), % 0 to 0.75
0.9 to 1.2
Nickel (Ni), % 4.5 to 5.0
0
Niobium (Nb), % 0.15 to 0.3
0
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.75
0.2 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0
0.2 to 0.35