Welding Wire UTP WEARMIG DUR 450 (UTP A Dur 450)

WEARmig Dur 450 solid wire for wear-resistant hardfacing

WEARmig Dur 450 is an alloyed solid wire for GMAW hardfacing of components subjected to high pressure, impact, and abrasion stress. In its untreated state, the weld metal achieves a hardness of approximately 450 HB, making it particularly suitable for the repair, regeneration, and preventive wear protection of heavily stressed machine components.

Typical fields of application include undercarriage parts for crawler vehicles, machine and gear components, as well as punches. The applied weld metal can be finished by grinding. Furthermore, both soft annealing and subsequent hardening are possible, allowing the mechanical properties to be specifically adapted to the respective application.

Product features

• Solid wire for GMAW hardfacing
• High resistance to pressure, impact, and abrasion stress
• Hardness of untreated weld metal: approx. 450 HB
• Hardness after hardening at 820–850 °C with oil quenching: approx. 62 HRC
• Hardness after soft annealing at 720–740 °C: approx. 200 HB
• Hardness of the first layer on unalloyed steel: approx. 350 HB
• Weld metal can be soft-annealed and hardened
• Mechanical finishing by grinding possible
• Processing with direct current (DC+)

Typical application areas

WEARmig Dur 450 is suitable for, among others:

• Undercarriage parts of crawler vehicles
• Machine components
• Gear parts
• Punches
• Wear-stressed surfaces and edges
• Repair and regeneration of worn components
• Preventive wear protection coatings

Standards and classifications

Typical wire analysis

Processing instructions

The welding area must be prepared to a metallic bright finish prior to processing. Solid components and high-carbon steels should be preheated to approx. 300 °C to reduce stresses and crack formation.

Concrete welding parameters should be adapted to the component geometry, base material, overlay thickness, and welding position.