Welding wire MTC MT-4820 1.4820

Welding Wire MTC MT-4820 1.4820

**MT‑4820 – MIG wire electrode made of ferritic-austenitic chrome-nickel steel**  
*Heat-resistant up to +1100 °C, resistant to scaling and sulfur – ideal for welding high-temperature resistant steels*  

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### Product Overview  
The MIG wire MT‑4820 is specially designed for MAG welding (MIG) of ferritic-austenitic, heat-resistant steels. It combines high mechanical strength with outstanding resistance to scaling, oxidation, and sulfur-containing furnace gases – even at temperatures up to +1100 °C.  

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## Technical Specifications (Indicative Values)

| **Parameter** | **Value** | **Unit** |
|---------------|----------|------------|
| 0.2 % elongation strength (Rp0.2) | 450 | MPa |
| Tensile strength (Rm) | 650 | MPa |
| Elongation at break (A5) | 15 | % |
| Charpy impact strength (AV) | 50 | J |
| Welding gas (MIG) | **M 11** | – |
| Microstructure | Ferritic-Austenitic | – |
| Chemical composition (in %) | C 0.10 % · Si 0.6 % · Mn 1.0‑2.5 % · Cr 24‑27 % · Ni 4‑6 % | – |

**Standard:** EN ISO 14343‑A (G/W 25 4) – Material number 1.4820  

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## Applications & Welding Positions  

| **Process** | **Permissible positions (according to DIN EN ISO 6947)** |
|---------------|-----------------------------------------------|
| MIG (MAG) | **PA, PB, PF** (Flat, vertical and overhead welding positions) |

*Recommended Practice*  
- **Joint welding** on similar heat-resistant steels: MT‑4820 provides a stable root pass.  
- **Cover welding**: The chemical resistance of the wire maximizes the notch toughness and formability of the cover layer.  

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## Key Benefits at a Glance  

- **Heat resistance up to +1100 °C** – no deterioration of welding properties at high operating temperatures.  
- **Scaling and oxidation protection** – reduces post-processing and increases the service life of the weld.  
- **Resistance to sulfur-containing furnace gases** – ideal for welding in aggressive environments.  
- **High mechanical quality** (Rm 650 MPa, AV 50 J) – guarantees strong and durable connections.  
- **Suitable for all common MIG positions (PA, PB, PF)** – flexible application in manufacturing and service.  

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## Packaging & Size Specifications  

| Diameter | Spool | Package contents |
|-------------|-------|------------|
| **1.00 mm** | K300 | 15.0 kg |
| **1.20 mm** | K300 | 15.0 kg |

Each package is hermetically sealed to prevent contamination and ensure the quality of the welding material.  

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## Special Notes  

- The wire is heat- and scaling-resistant **up to +1100 °C**, as well as resistant to reducing, sulfur-containing furnace gases.  
- MT‑4820 is recommended for **cover welding** because its chemical resistance increases notch toughness and reduces post-processing requirements.  
- For **joint welding**, austenitic fillers (e.g. MT‑309, MT‑310) can be used additionally to further optimize the welding properties.  

 

Product Safety and Documents

Manufacturer

METAL TECHNOLOGY CANTERBO GMBH

Robert-Bosch-Str. 11

40668 Meerbusch

Germany

Email: info@mtc-meerbusch.com

Telephone: +49 (0)2150 6090-0

Web: https://www.mtc-meerbusch.com/

Product Identification

• 1.0 mm K300 15 kg spool · Item no. 7048201003
• 1.2 mm K300 15 kg spool