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AWS E318 vs. ASTM A182 Grade F5a

Both AWS E318 and ASTM A182 grade F5a are iron alloys. They have 70% of their average alloy composition in common. There are 25 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS E318 and the bottom bar is ASTM A182 grade F5a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
25
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
74
Tensile Strength: Ultimate (UTS), MPa 620
710

Thermal Properties

Latent Heat of Fusion, J/g 290
260
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 15
40
Thermal Expansion, µm/m-K 14
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
8.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 23
4.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.4
1.8
Embodied Energy, MJ/kg 62
24
Embodied Water, L/kg 160
69

Common Calculations

PREN (Pitting Resistance) 27
6.8
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
25
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 4.0
11
Thermal Shock Resistance, points 16
20

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.25
Chromium (Cr), % 17 to 20
4.0 to 6.0
Copper (Cu), % 0 to 0.75
0
Iron (Fe), % 57.6 to 69.5
91.4 to 95.6
Manganese (Mn), % 0.5 to 2.5
0 to 0.6
Molybdenum (Mo), % 2.0 to 3.0
0.44 to 0.65
Nickel (Ni), % 11 to 14
0 to 0.5
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0 to 0.030