welding-alloys.com 4 Cobalt based alloys selection guide Product Composition [%] - Co balance C Mn Si Cr W Fe Others STELLOY 25 0.15 1.5 1 20 14 4 Ni: 9.5 STELLOY 21 0.35 1 1 28 3 Ni: 3.2 Mo: 5.5 STELLOY 6 BC 0.9 1 1.2 29 5 3.5 Ni: < 3 STELLOY 6 1.1 1 1.2 29 5 3.5 Ni: < 3 STELLOY 6 HC 1.2 1 1.2 29 5 3.5 Ni: < 3 STELLOY 12 1.5 1 1 30 7.5 3.5 Ni: < 3 STELLOY 1 2.4 1 1.2 28.5 12.5 3.5 Ni: < 3 The technical datasheets for these products are available on our website. The safety datasheets are also available on request. Product Welding process Standard diameters [mm] AWS A5.21 Metal-to-metal friction Mineral abrasion Abrasion under pressure Hot abrasion Erosion Cavitation Impact Mechanical fatigue Thermal fatigue STELLOY 25 -G 1.2 - 1.6 - u u uuuuuu STELLOY 21 -G 1.2 - 1.6 ERCCoCr-E u u uuuu u uu -TIG -LD STELLOY 6 BC -G 1.2 - 1.6 ERCCoCr-A u u u u u u u u STELLOY 6 -G 1.2 - 1.6 u u u u u u u u -TIG -LD STELLOY 6 HC -G 1.2 - 1.6 u u u u u u u u u STELLOY 12 -G 1.2 - 1.6 ERCCoCr-B u u u u u u u u -TIG -LD STELLOY 1 -G 1.2 - 1.6 ERCCoCr-C u u u u u u suitable u u highly suitable Gas shielded (-G) Laser deposit (-LD) Gas tungsten arc welding (-TIG)
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