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ASTM A182 Grade F6b vs. AWS E318

Both ASTM A182 grade F6b and AWS E318 are iron alloys. They have 79% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ASTM A182 grade F6b and the bottom bar is AWS E318.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 18
29
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 850
620

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 10
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
23
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.2
4.4
Embodied Energy, MJ/kg 30
62
Embodied Water, L/kg 100
160

Common Calculations

PREN (Pitting Resistance) 14
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
22
Strength to Weight: Bending, points 26
20
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 31
16

Alloy Composition

Carbon (C), % 0 to 0.15
0 to 0.080
Chromium (Cr), % 11.5 to 13.5
17 to 20
Copper (Cu), % 0 to 0.5
0 to 0.75
Iron (Fe), % 81.2 to 87.1
57.6 to 69.5
Manganese (Mn), % 0 to 1.0
0.5 to 2.5
Molybdenum (Mo), % 0.4 to 0.6
2.0 to 3.0
Nickel (Ni), % 1.0 to 2.0
11 to 14
Niobium (Nb), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.020
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030