Data sheet with specifications, mechanical properties, welding guidelines and storage information for Metrode A-10 and A-12 welding consumables.
The Metrode A-10 and A-12 data sheets describe welding consumables designed for elevated‑temperature service on 0.5% Mo and 1¼Cr‑½Mo creep‑resisting steels. They are intended for use in power‑plant piping, turbine castings, boiler super‑heaters and related high‑temperature applications.
The documents list product types such as MMA electrodes, solid TIG/MIG wires and fluxes, providing composition, mechanical properties (tensile strength, proof stress, elongation, hardness), recommended pre‑heat and post‑weld heat‑treatment temperatures, operating parameters, packaging dimensions and storage guidelines.
| Tensile strength (A-10 MMA electrode) | 510 MPa |
|---|---|
| 0.2 % Proof stress (A-12 MMA electrode) | 460 MPa |
| Operating voltage (OCV) | ≥ 70 V |
| Packaging weight (2.5 mm electrode) | 12.0 kg/carton |
| Storage condition | Hermetically sealed tins, unlimited shelf life |
Pre‑heat should be 150 °C–250 °C (BS EN), 200 °C–300 °C (BS), 160 °C–190 °C (AWS) or 200 °C–350 °C (DIN).
PWHT is typically performed at 690 °C, with the time depending on section thickness.
Redry at 250 °C–300 °C for 1–2 h to keep H₂ < 10 ml/100 g, or at 300 °C–350 °C for 1–2 h to keep H₂ < 5 ml/100 g.
The wires can be used with DC positive or AC, with an open‑circuit voltage of at least 70 V.