Description
The ER630 1.6mm TIG Wire 5kg, often referred to as ER630 TIG wire, is a high-strength stainless steel filler rod made for welding 17-4 PH stainless steel. This alloy, known for its precipitation-hardening properties, is widely used in aerospace, marine, and petrochemical industries where strength and corrosion resistance are vital.
This filler wire includes chromium, nickel, copper, and niobium. Together, these elements create weld deposits that respond well to heat treatment, delivering high tensile strength without sacrificing toughness. After welding, you can apply heat treatment to improve hardness and durability, making it suitable for heavy-load applications.
Welders choose ER630 TIG wire for critical parts such as shafts, turbine blades, gears, and valves. The 1.6mm diameter offers precise arc control, while the wire provides smooth feeding and clean bead formation. Use it with DC+ polarity, and make sure the base material is clean for optimal fusion and strength.
Although post-weld heat treatment isn’t always mandatory, it enhances mechanical performance. When required, preheating and controlled cooling reduce the risk of cracking. These steps ensure reliable results, especially on thick materials or structural components.
The 5kg spool size is ideal for medium to large projects. It offers enough material for production runs, yet remains compact enough for portable use. Whether you work in a workshop or on-site, this wire delivers consistent, high-quality welds.
At Fourie Welding & Tool, we stock professional-grade welding consumables to support engineers and fabricators across South Africa.
For heat treatment specs and material guidance, consult Special Metals’ ER630 data sheet.
