12 welding-alloys.com Cobalt Based Alloys Product Welding process Standard diameters [mm] AWS A5.21 Description and applications STELLOY 25 -G 1.2 - 2.4 - Low carbon cobalt base with low cracking tendency. Highly resistant to high temperature wear and metal-to-metal abrasion. Maintains a good level of hardness at high temperatures. Applications: Straightening guides, vertical mill rolls and foot rolls in continuous casting, press dies, punching and shearing dies, extrusion dies and dummy blocks. STELLOY 21 -G 1.2 - 2.4 ERCCoCr-E Low carbon cobalt base with low cracking tendency. Ideal choice for resistance to multiple combinations of stress such as corrosion and cavitation. Maintains a good level of hardness at high temperatures. Can be work hardened and polished, low coefficient of friction. Applications: Industrial valve work, forging dies, hot trim and shearing dies, punches. STELLOY 6 -G 1.2 - 2.4 ERCCoCr-A Combines all the outstanding properties of cobalt based alloys, including abrasion and erosion resistance. Medium hardness deposit with good machinability. Tailored compositions are also possible by adjusting the carbon content. A lower carbon content, and therefore lower cracking tendency, facilitates machining. A higher carbon content allows the required hardness to be obtained on low alloy steels from the first layer. Applications: Hot trim and shearing dies, punches. STELLOY 12 -G 1.2 - 2.4 ERCCoCr-B Good resistance to mineral abrasion due to its high hardness. Particularly suited to the production of cutting tools. Applications: Cutting tools, hot trim and shearing dies, punches. STELLOY 1 -G 1.2 - 2.4 ERCCoCr-C Highest hardness of the cobalt based alloy range, offering excellent resistance to abrasion and corrosion. Self polishing, promotes scratch free sliding of abrasive materials. Not suitable for impact resistance. Applications: Hot trim and shearing dies, punches. Gas shielded (-G) Open arc / self shielded (-O)
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