Bohler UTP 2535 Nb (Joining & Repair-Heat Resistant) Special Application Stick Electrodes
UTP® 2535 Nb: basic coated stick electrode with high carbon content. Bohler Welding Stainless steels are iron-base alloys which contain a minimum of 11% chromium uniformly dispersed throughout the metal. UTP® 2535 Nb is suitable for joining and surfacing of heat resistant CrNi-cast steels (centrifugal- and mouldcast parts) of the same or of similar nature, such as 1.4848 G-X 40 CrNiSi 25 20, 1.4852 G-X 40 NiCrSiNb 35 26, 1.4857 G-X 40 NiCrSi 35 26. It is used for operating temperatures up to 1150° C in carburised low-sulphur combustion gas, e. g. Reforming Ovens in Petrochemical Plants.
Features
- Stable, Short Arc Control, designed to run with a tight, short arc held vertically. This minimises ambient gas contamination and maintains tight control over the puddle.
- Highly sensitive to over-heating. The coating chemistry forces low heat distribution to prevent thermal stress cracking in specialised cast alloys.
-
Officially rated for flat, horizontal, vertical-up, and overhead positions (
PA, PB, PC, PE, PF). - Best suited for narrow stringer beads rather than wide weaving patterns to keep regional heat stress at a minimum
Technical Data
- EN ISO 3581-A E Z 25 35 Nb B 6 2
- Maximum Service Temperature: Up to 1150°C (2100°F) in carburising, low-sulphur combustion gases
- Base Materials: Suitable for CrNi cast steels like 1.4848 (GX40CrNiSi 25-20), 1.4852 (GX40NiCrSiNb 35-26), and 1.4857 (GX40NiCrSi 35-26)