E 410NiMo - 16

About E 410NiMo - 16

• Classification: The prefix "E" denotes an electrode for arc welding. "410NiMo" refers to the specific chemical composition (a martensitic stainless steel with Nickel and Molybdenum additions). The suffix "-16" indicates the electrode's covering type, typically a titania-based or rutile-based coating suitable for AC or DCEP (Direct Current Electrode Positive) welding, providing a stable arc and good usability in all positions except vertical down.
• Material Composition: The deposited weld metal is a soft martensitic stainless steel, typically containing:
  • Chromium (Cr): 11.5 - 14%
  • Nickel (Ni): 3 - 4.5%
  • Molybdenum (Mo): around 0.5%
  • Carbon (C): low content (<0.04%)
• Properties: The weld metal is air-hardening but is designed to offer a good balance of high strength, good toughness, and excellent resistance to corrosion, erosion, cavitation, and abrasion. The nickel and molybdenum content improves ductility and crack resistance compared to standard 410 electrodes.
• Post-Weld Heat Treatment (PWHT): Because the weld metal is air-hardening, preheating to a maximum of 150C (302F) and a post-weld heat treatment (tempering or normalizing) are generally required, especially for thicker materials or critical applications, to achieve optimal toughness and prevent cracking