Heat resistant nickel alloys welding
Supplier
The supplier Evek GmbH offers to buy any nickel alloy at the best price in the segment of rolled products. We offer any nickel alloy from the specialized warehouses of Evek GmbH. Timely delivery is ensured by representative offices in Eastern European cities.
Welding Challenges
Welding any nickel alloy with a number of difficulties due to the fact that the transition of the metal from solid to liquid state has a tendency to form pores. In argon arc welding, nitrogen is the main source of pores. After the weld cools, nitrogen gas forms pores inside the metal.
Crystallization cracks
Welding is associated with a high tendency for the weld to develop crystallization cracks at the boundaries of large grains, which have a transcrystalline structure. To prevent cracking it is necessary to limit the content of harmful impurities and introduce elements that bind sulfur in the most refractory compounds.
Chemical composition of high-temperature nickel alloys
| Alloy grade | Ni | Cr | Co | Mo | Al | Ti | Nb | C | B | Zr | Impurities |
| Inconel X-750 | 73,0 | 18,0 | - | - | 0,8 | 2,5 | 0,9 | 0,04 | - | - | 6.8% Fe |
| Udimet 500 | 53,6 | 18,0 | 18,5 | 4,0 | 2,9 | 2,9 | - | 0,08 | 0,006 | 0,05 | |
| Udimet 700 | 53,4 | 15,0 | 18,5 | 5,2 | 4,3 | 3,5 | - | 0,08 | 0,03 | - | |
| Waspaloy | 58,3 | 19,5 | 13,5 | 4,3 | 1,3 | 3,0 | - | 0,08 | 0,006 | 0,06 | |
| Astroloy | 55,1 | 15,0 | 17,0 | 5,2 | 4,0 | 3,5 | - | 0,06 | 0,03 | - | |
| Rene 41 | 55,3 | 19,0 | 11,0 | 10,0 | 1,5 | 3,1 | - | 0,09 | 0,005 | - | |
| Nimonic 90 | 57,4 | 19,5 | 18,0 | - | 1,4 | 2,4 | - | 0,07 | - | - | |
| Nimonic 115 | 57,3 | 15,0 | 15,0 | 3,5 | 5,0 | 4,0 | - | 0,15 | - | - |
Welding optimization
An important condition is the cleanliness of the surface of welding materials and base metal as well as the binding of hydrogen. This is solved by the introduction of strong deoxidants in the weld pool (titanium, aluminum, etc.), as well as by the use of coatings or fluxes that can convert hydrogen into stable volatile compounds.
Buy, bargain price
Supplier offers to buy any nickel alloy, the price - due to the technological features of production without including additional costs. The website of Evek GmbH contains information about the latest arrivals of products. The price is optimal from the supplier.
