ALLOYS HARDFACING ALLOYS

Kennametal is a global provider of solutions to wear, heat, and corrosion problems and is a world-class manufacturer of alloy-based materials and components. These consumables come in the form of rod, wire, powder, and electrode and can be custom engineered to meet individual customer needs. In addition to welding consumables, Kennametal also offers its expertise and experience in coating services in the form of HVOF (High-Velocity Oxy Fuel) coatings and weld hardfacings. In Germany, Canada, and Shanghai, hardfaced components can be manufactured complete to drawing by in-house machine shops. Industries...

Hardfacing Alloys At a Glance Stellite™ Alloys The cobalt-based Stellite™ alloys are our most well-known and successful alloys, with the best “all-round” properties. They combine excellent mechanical wear resistance, especially at high temperatures, with very good corrosion resistance. The Stellite™ alloys are mostly cobalt based with additions of Cr, C, W, and/or Mo. They are resistant to cavitation, corrosion, erosion, abrasion, and galling. The lower carbon alloys are generally recommended for cavitation, sliding wear, or moderate galling. The higher carbon alloys are usually selected for...

Hardfacing Alloys At a Glance Nistelle Alloys Nistelle™ alloys are designed for corrosion resistance rather than wear resistance, particularly in aggressive chemical environments where their high chromium and molybdenum contents provide excellent pitting resistance. As a class, they are also generally resistant to high-temperature oxidation and hot gas corrosion. Care should be taken to select the correct alloy for any given corrosive environment. Jet Kote™ powders are used for thermal spraying, and they usually consist of either a carbide-metal combination (e.g., WC-Co or Cr3Cr2-NiCr) or a Stellite™...

Hardfacing Alloys TIG and Oxy-Acetylene Welding TIG and Oxy-Acetylene Welding In TIG (Tungsten Inert Gas), also known as Gas Tungsten Arc Welding (GTAW), an arc is drawn between a nonconsumable tungsten electrode and the workpiece. The electrode, the arc, and the weld-pool are protected from the atmosphere with an inert shielding gas. The hardfacing material is in the form of a rod. Advantages of the TIG process include simple manual operation and good control of the welding arc. The process can also be mechanised, in which case a manipulator is used to move the workpiece in relation to the welding...

Hardfacing Alloys TIG and Oxy-Acetylene Welding Co NOMINAL ANALYSIS OF WELDING ROD1 Cr W C Ni Mo Fe COBALT-BASED ALLOY BARE WELDING RODS NICKEL-BASED ALLOY BARE WELDING RODS INTER-METALLIC LAVES PHASE ALLOY WELDING RODS (TRIBALOY™ ALLOYS) 1 Nominal analysis is a guideline only for standard product. Does not include all incidental elements and may differ depending on the exact specification/standard used when ordering. 2 When written certification to a standard is required, please specify this when ordering. Certain products can also be certified to AMS, SAE, and other standards. Please contact...

Hardfacing Alloys Manual Metal Arc Weld Deposition Manual Metal Arc (MMA) Weld Deposition In this process, an arc is drawn between a coated consumable electrode and the workpiece. The metallic core is melted by the arc and is transferred to the weld pool as molten droplets. The electrode coating also melts to form a gas shield around the arc and the weld pool as well as a slag on the surface of the weld pool, thus protecting the cooling weld-pool from the atmosphere. The slag must be removed after each layer. Core Wire Electrode Holder MMA welding is still a widely used hardfacing process. Due...

Hardfacing Alloys Manual Metal Arc Weld Deposition MMA Weld Deposition ALLOY 4 Nominal analysis is a guideline only for standard product. Does not include all incidental elements and may differ depending on the exact specification/standard used when ordering. 5 When written certification to a standard is required, please specify this when ordering. Certain products can also be certified to AMS, SAE, and other standards. Please contact us for more details. 6 Undiluted weld metal. Electrodes are available in these standard diameters: • 2,6mm (3/32") (special order) Electrodes are supplied in...

Hardfacing Alloys MIG Weld Deposition, Submerged Arc Welding MIG Weld Deposition, Submerged Arc Welding In these arc welding processes, consumable hardfacing wire is fed continuously from a spool through the welding torch into the arc, where it is melted and transferred to the workpiece. In the case of MIG welding, also known as Gas Metal Arc Welding (GMAW), the weld pool is protected from the atmosphere by a stream of shielding gas. The MIG process is very flexible — it can be partially or fully mechanised and is suitable for a wide range of applications. Wire-Feed Mechanism Hardfacing Wire...

Hardfacing Alloys MIG Weld Deposition, Submerged Arc Welding Co NOMINAL ANALYSIS OF UNDILUTED WELD METAL7 | Cr | W | C | Ni | Mo | Fe | COBALT-BASED ALLOY CORED WIRE NICKEL-BASED ALLOY CORED WIRE Nistelle™ alloy C INTER-METALLIC LAVES PHASE ALLOY CORED WIRE (TRIBALOY™ ALLOYS) Tribaloy™ alloy T-401 7 Nominal analysis is a guideline only for standard product. Does not include all incidental elements and may differ depending on the exact specification/standard used when ordering. 8 When written certification to a standard is required, please specify this when ordering. Certain products can also...

Hardfacing Alloys PTA & Laser Weld Deposition Plasma Transferred Arc (PTA) Weld Deposition The PTA process is easily automated, providing a high degree of reproducibility of the weld overlays. In addition, because of the highly concentrated heat source, this process benefits from high powder utilization and can achieve a very low level of iron dilution in the overlay. Tungsten Electrode Because the hardfacing materials are in powder form, it is possible to produce overlays from many different materials and combinations of materials with a wide range of hardness and other properties. Plasma Gas...