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AWS E90C-K3 or E62C-K3 Weld Metal

AWS E90C-K3 is a weld metal formulated for joining alloy steels. Cited properties are appropriate for the as-welded condition. It has the highest ductility among alloy steel welding fillers. In addition, it has a moderately high electrical conductivity and a moderately high tensile strength.

The graph bars on the material properties cards below compare AWS E90C-K3 to: alloy steel welding fillers (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

190 GPa 27 x 106 psi

Elongation at Break

55 %

Poisson's Ratio

0.29

Shear Modulus

73 GPa 11 x 106 psi

Tensile Strength: Ultimate (UTS)

710 MPa 100 x 103 psi

Tensile Strength: Yield (Proof)

600 MPa 88 x 103 psi

Thermal Properties

Latent Heat of Fusion

250 J/g

Melting Completion (Liquidus)

1460 °C 2650 °F

Melting Onset (Solidus)

1410 °C 2580 °F

Specific Heat Capacity

470 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

48 W/m-K 28 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

7.9 % IACS

Electrical Conductivity: Equal Weight (Specific)

9.0 % IACS

Otherwise Unclassified Properties

Base Metal Price

3.4 % relative

Density

7.8 g/cm3 490 lb/ft3

Embodied Carbon

1.7 kg CO2/kg material

Embodied Energy

23 MJ/kg 9.8 x 103 BTU/lb

Embodied Water

53 L/kg 6.3 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

370 MJ/m3

Resilience: Unit (Modulus of Resilience)

980 kJ/m3

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

25 points

Strength to Weight: Bending

22 points

Thermal Diffusivity

13 mm2/s

Thermal Shock Resistance

21 points

Alloy Composition

Iron (Fe) 92.6 to 98.5
Nickel (Ni) 0.5 to 2.5
Manganese (Mn) 0.75 to 2.3
Molybdenum (Mo) 0.25 to 0.65
Silicon (Si) 0 to 0.8
Copper (Cu) 0 to 0.35
Carbon (C) 0 to 0.15
Chromium (Cr) 0 to 0.15
Vanadium (V) 0 to 0.030
Phosphorus (P) 0 to 0.025
Sulfur (S) 0 to 0.025
Residuals 0 to 0.5

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

AWS A5.28: Specification for Low-Alloy Steel Electrodes and Rods for Gas Shielded Arc Welding

Welding Metallurgy, 2nd ed., Sindo Kou, 2003

CRC Materials Science and Engineering Handbook, 4th ed., James F. Shackelford et al. (editors), 2015