Lincoln Electric's LNT 25 is a solid wire for TIG welding and general unalloyed steel construction . This TIG wire has a very high notch toughness when used at low temperatures. The wire is often used for general applications. This product is available in a 5 kg package. The wire is suitable for TIG and GTAW welding processes and complies with ER 70S-3 (AWS A5 18) and W 42 5 W2Si (EN ISO 636-A) standards.