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Sheralloy copper-tungsten and silver-tungsten is manufactured for specific use as electrode materials for resistance welding and other similar related electrical contact wear applications.
Sheralloy refractory alloys are manufactured by the powder metallurgy techniques of pressing, sintering and infiltrating of tungsten with copper or silver. Sheralloy is produced under rigid manufacturing fixed processes resulting in a high degree of metallurgical uniformity held in the fine-grained micro-structure of the finished materials. To the user this means an extremely high performance welding electrode which will perform well under most severe applications.
| Grade | Description | % | RWMA Class |
Density Grams/CC |
Elec.Cond. % IACS |
Hardness |
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| S1WC | Tungsten Copper | 56 44 |
10 | 12.60 | 55-60 | 72.-82 | Flash and butt welding die inserts. Spot welding ferrous metals, stainless steel where the electrode should have higher thermal and electrical conductivity than Class 11 material. | |
| S3WC | Tungsten Copper | 68 32 |
10 | 13.93 | 48-53 | 85-92 | ||
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Light duty projection welding dies where welding pressures are not extreme | ||
| S10WC | Tungsten Copper | 75 25 |
11 | 14.80 | 42.-50 | 94-99 | Standard for electrode and die inserts on most flash and buff welding dies. For projection welding dies where welding pressures are moderate, also used for light electrical upsetting, electro forming dies, and seam welder bushing inserts | |
| S30WC | Tungsten Copper | 80 20 |
12 | 15.60 | 41-59 | 99-104 | For volume production production welding dies where pressures are relatively high, electrical upsetting of nonferrous metals and low carbon steel when used as die facings. Cross wire welding of wire and rod. | |
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25 |
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| Supplied in the fully heat treated condition. Used for electroforming and electrical upsetting where temperatures and pressures are high. | ||||||||
| S50WS | Tungsten Silver | 50 50 | - | 13.48 | 62-70 | 50-60 | For special welding applications where a corrosion resistant electrode is needed, | |
| S35WS | Tungsten Silver | 65 35 |
- | 14.77 | 50-56 | 80-87 | ||
| S100W | Tungsten | 100 | 13 | 19.28 | 31 | 69 | Pure Tungsten is very hard with low ductility. Principally used to weld nonferrous materials since it will not alloy with them. | |
| S100M | Molybdenum | 100 | 14 | 10.20 | 30 | 89 | Molybdenum is not as hard as tungsten, and can be machined. It has the same application as tungsten. | |
