AWS E240 (W32410) Weld Metal
AWS E240 is a weld metal formulated for joining stainless steels. Cited properties are appropriate for the as-welded condition. E240 is the AWS designation for this material. W32410 is the UNS number. Additionally, the ISO numeric designation is ES240.
It has a moderately low ductility among stainless steel welding fillers. In addition, it has a fairly low base cost and a fairly low embodied energy.
The graph bars on the material properties cards below compare AWS E240 to: stainless 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
200 GPa 29 x 106 psi
Elongation at Break
17 %
Poisson's Ratio
0.28
Shear Modulus
77 GPa 11 x 106 psi
Tensile Strength: Ultimate (UTS)
770 MPa 110 x 103 psi
Thermal Properties
Latent Heat of Fusion
290 J/g
Melting Completion (Liquidus)
1390 °C 2540 °F
Melting Onset (Solidus)
1350 °C 2460 °F
Specific Heat Capacity
480 J/kg-K 0.11 BTU/lb-°F
Thermal Conductivity
15 W/m-K 8.4 BTU/h-ft-°F
Thermal Expansion
15 µm/m-K
Otherwise Unclassified Properties
Base Metal Price
14 % relative
Density
7.7 g/cm3 480 lb/ft3
Embodied Carbon
3.0 kg CO2/kg material
Embodied Energy
42 MJ/kg 18 x 103 BTU/lb
Embodied Water
160 L/kg 19 gal/lb
Common Calculations
PREN (Pitting Resistance)
22
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
28 points
Strength to Weight: Bending
24 points
Thermal Diffusivity
3.9 mm2/s
Thermal Shock Resistance
19 points
Alloy Composition
| Fe | 58.6 to 68.4 | |
| Cr | 17 to 19 | |
| Mn | 10.5 to 13.5 | |
| Ni | 4.0 to 6.0 | |
| Si | 0 to 1.0 | |
| Mo | 0 to 0.75 | |
| Cu | 0 to 0.75 | |
| N | 0.1 to 0.3 | |
| C | 0 to 0.060 | |
| P | 0 to 0.040 | |
| S | 0 to 0.030 |
All values are % weight. Ranges represent what is permitted under applicable standards.
Followup Questions
Similar Alloys
Further Reading
AWS A5.4: Specification for Stainless Steel Electrodes for Shielded Metal Arc Welding
Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005
Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012