ED035019 - Lincoln Excalibur 630-16 Stainless Stick Electrode 3/32" (8lb Can)

Technical Overview of Lincoln Excalibur 630-16

The Lincoln Electric Excalibur 630-16 (SKU: ED035019) is a specialized stainless steel covered electrode designed for the Shielded Metal Arc Welding (SMAW) of precipitation-hardening stainless steels. Specifically formulated to meet AWS A5.4 E630-16 classifications, this electrode is engineered for joining materials such as ASTM A564 Type 630 (commonly known as 17-4 PH) and Type 631 (17-7 PH). The weld metal composition is nominally 17% chromium, 4% nickel, and 4% copper, which allows the deposit to respond to precipitation hardening heat treatments, thereby matching the mechanical properties of the base material.

Metallurgically, the Excalibur 630-16 is capable of producing weld deposits with high tensile strength and hardness. In the as-welded condition, the microstructure is primarily martensitic with some retained austenite. Post-weld heat treatment (PWHT) is critical for applications requiring optimal strength and ductility. The electrode utilizes a rutile-basic coating system that provides excellent arc physics, including a stable arc transfer and low spatter generation, which is essential for maintaining the integrity of high-value stainless components.

This 3/32-inch (2.4 mm) diameter electrode operates effectively on both Direct Current Electrode Positive (DCEP) and Alternating Current (AC). It is packaged in Lincoln's hermetically sealed 8lb cans, ensuring low moisture content and preventing porosity defects associated with hydrogen pickup. It is an indispensable consumable for technical fabrication environments dealing with aerospace components, chemical processing equipment, and high-stress mechanical parts.