- Vibration Monitoring
- PLC & I/O Cards
- Industrial Communications
- Automation Accessories
- Controllers & Data Acquisition
- AC Drives
- Isolator & Barrier
- Industrial Computers
- Encoders
- Safety Switches & Guard Locking
- Automation Software
- HMI Displays
- Motor Soft Starters
- Servo Drives
- CCTV & Security
- Robotics
- Pneumatic Cylinders
- Machine Vision
Brand: Böhler Welding
Böhler Union ER 90S-B3 2.25Cr-1Mo TIG Welding Rod
Description
2.25Cr-1Mo TIG rod for P22 boiler, plate and tube steel
Böhler Union ER 90S-B3 is a GTAW rod for 2.25 % Cr – 1 % Mo alloyed boiler, plate and tube steels, as well as in oil refineries. It is classified AWS A5.28 / SFA-5.28 ER90S-B3, EN ISO 21952-A W CrMo2Si and EN ISO 21952-B W 62 M 2C1M3. Böhler Welding recommends it preferably for the base metal 10CrMo9-10 (ASTM A335 P22), approves it in long-term condition up to 1100 °F service temperature, and notes that the very low trace-element content gives reliable long-term creep properties without embrittlement.
Technical specifications
| Parameter | Specification |
|---|---|
| AWS classification | A5.28 / SFA-5.28 ER90S-B3 |
| EN ISO classification | 21952-A W CrMo2Si; 21952-B W 62 M 2C1M3 |
| Typical analysis, wt % | C 0.09; Si 0.55; Mn 0.60; Cr 2.55; Mo 1.05 |
| Base materials | ASTM A 182 Gr. F22 Cl. 1 and 3; A 213 Gr. T22; A 234 Gr. WP22 Cl. 1 and 3; A 335 Gr. P22; A 217 Gr. WC9; A 387 Gr. 22; EN 1.7380 10CrMo9-10; 1.7379 G17CrMo9-10 |
| All-weld metal, heat treated 1275 °F / 1 h (typical) | Yield 78 ksi (538 MPa); tensile 90 ksi (621 MPa); impact 80 ft-lbs at 68 °F |
| Polarity / shielding gas | DC-; I1 |
| Rod sizes (length 39 in.) | 3/32; 1/8 in. |
| Preheat and interpass | 200 to 500 °F (about 93 to 260 °C) |
| Tempering | 1275 ± 25 °F (about 690 °C), at least 1 h, furnace-cool to 575 °F (about 300 °C), then still air |
| Approvals | None listed |
Use in refinery and power piping
The 2.25Cr-1Mo grade is a staple of refinery piping, reactors and boilers, and a TIG rod of this type is mostly used for root passes and thin-wall pipe, with SAW or SMAW fill by other consumables. The matching SAW wire in Böhler’s range is
, and for 1.25Cr-0.5Mo grades see . The data sheet notes that step-cooling applications can be handled with special products, so ask if step-cooling tests are part of the specification.| Related Böhler TIG rod | AWS / EN ISO class | Typical use |
|---|---|---|
| EMK 6 | ER70S-6 / W 3Si1 | Carbon steel boiler, vessel and structural joints |
| Union ER 80S-B2 | ER80S-B2 | 1.25Cr-0.5Mo creep-resistant steel |
| Thermanit 309L | ER309L / W 23 12 L | Dissimilar joints and buffer layers |
Handling and what to confirm
Use clean, dry rods and pure argon, and keep the rod tip inside the gas shield while welding so that the filler does not oxidise. The slow furnace cooling to 575 °F in the data sheet tempering note is part of the heat treatment cycle, so plan the PWHT with the fabricator before welding starts. Confirm diameter, pack weight, certificate level and, where required, step-cooling or X-factor test reports at quotation stage.
Documents and quotation
The Böhler Welding data sheet for Union ER 90S-B3 (GTAW, US edition) is attached. Browse more in the TIG Welding Wire category. For a quotation, send diameter, pack size, quantity and certificate requirements.
Datasheets & Documents
- Datasheet Böhler Welding Union ER 90S-B3 GTAW product data sheet (US edition) Download
Reviews (0)
About brand
Böhler Welding is the welding consumables brand of voestalpine Böhler Welding, part of the voestalpine group, with a portfolio that covers stick electrodes, TIG rods, solid wires, gas-shielded and self-shielded flux-cored wires and submerged-arc wires and fluxes. The company states more than 100 years of experience. Seven Star LLC, an independent supplier in Muscat, lists Böhler Welding consumables and welding machines, including pipeline electrodes, and sources Böhler Welding consumables for fabricators and pipeline contractors.
Böhler Welding product groups
Beyond the consumables above, Böhler Welding lists strip cladding, wire arc additive manufacturing, metal powders, arc spraying cored wires, ceramic weld backing, brazing consumables and welding automation such as orbital welding and collaborative robots. The pipeline range includes cellulosic FOX CEL electrodes and basic vertical-down FOX BVD electrodes for large-diameter line pipe.
Ordering Böhler Welding consumables: what we need
Give the product name, the AWS or EN classification, the diameter and length, and the packaging you need. For pipeline electrodes also state the pipe grade, wall thickness, welding position and whether sour-service test values are required, because the Böhler Welding data sheets note that some test values are available on request.
Related products
Frequently Asked Questions
What is the classification of Union ER 90S-B3?
AWS A5.28 ER90S-B3, EN ISO 21952-A W CrMo2Si.
Which base metal is it preferably used for?
10CrMo9-10, equal to ASTM A335 P22.
Up to what service temperature is it approved long-term?
Up to 1100 °F.
What preheat and tempering does the data sheet give?
Preheat and interpass 200 to 500 °F; temper at 1275 °F ± 25 for at least 1 hour.
Which sizes are listed?
3/32 and 1/8 inch, 39 inches long.
Reviews
There are no reviews yet.