LASER FUSED SECTIONS Technology of Laser Welding Laser welding is a manufacturing technology with a broad range of applications. Widely known are applications in the automotive industry (tailored strips and blanks), but over the years the technology was deployed for various manufacturing processes. In parallel to the applications, also the regulatory framework was developed. The most important international standards in the field of laser welding are:

• ISO 13919-1 Welding - Electrons and laser beam welded joints; guidance on quality levels for imperfections - Part 1: Steel;

• ISO 15609-4 Specification and qualification of welding procedures for metallic materials - Welding procedure specification - Part 4: Laser beam welding;

• ISO 15614-11 Specification and qualification of welding procedures for metallic materials - Welding procedure test - Part 11: Electron and laser beam welding.

Montanstahl’s laser fused stainless steel sections have been successfully utilized world-wide in the most diverse industries for over 10 years and comply with all the above mentioned standards. The products obtained an official product standard by the ASTM (ASTM 1069) and have certificates and approvals for a broad range of special applications. Laser Fusion Control Montanstahl performs a 100% weld inspection. Each individual bar is checked from start to finish, ensuring full penetration and weld continuity for the whole length of the bar. Laser fused sections have a monolithic structure and match the structural performance of hot-rolled sections. Therefore engineers do not need to apply any weld correction factor on laser fused sections, which prevents constructions from becoming unnecessarily heavy and keeps costs down as a result. Laser fused sections manufactured by Montanstahl have achieve the highest weld classification class (B) according to ISO 13919-1 and are approved by the German Building Authority, which grants unlimited access to the construction industry.

Destructive Tests Next to the 100% weld inspection, Montanstahl continuously performs destructive tests on the sections produced. The following pictures show some impressive destructive tests and prove the integrity of the weld area.