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Stainless Steel Processing
High-quality stainless steel welding for demanding projects – corrosion-resistant and with perfect seam quality.
Stainless steel welding at Krieg Elektronik Gehäusebau GmbH
KRIEG Elektronik-Gehäusebau GmbH is the leading provider of laser welding in North Rhine-Westphalia. For more than 50 years we have been processing stainless steel with the highest precision, manufacturing demanding assemblies that stand out for their quality, corrosion resistance and exceptional durability.
Frequently welded products and assemblies
We manufacture stainless steel components for a wide range of applications. Typical products include:
• Enclosures and cladding
• EV charging stations and associated components
• Racks and tubular frames
• VDE control cabinets and electronics enclosures
Technical requirements and surface quality
Our welding processes meet strict functional and visual criteria. We produce seal welds to IP65, protecting components from dust and water jets. Surfaces are processed free of grease, scratches and scoring. Depending on customer requirements, surfaces are pickled, glass-bead blasted, electropolished or ground.
Material thicknesses and alloys
We process stainless steel in material thicknesses from 1 to 8 millimetres. Frequently used alloys are 1.4301 V2A, 1.4016 V2A in magnetic grade and 1.4571 V4A for demanding environments.
Quality inspection after welding
High-quality results are ensured through systematic quality inspections. Verification includes visual inspections and tensile tests, among other methods.
Surface treatment and post-treatment
Depending on the application, we offer a wide range of finishing processes. These include pickling, passivation, electropolishing, glass bead blasting, grinding, polishing and painting. These processes increase the corrosion resistance, processing quality and service life of the components.
Challenges in stainless steel welding
Our specialists have extensive experience in handling the critical properties of stainless steel. The technical challenges include distortion, cracking, heat tint and high heat input. Precise temperature control and material handling are essential here.
Stainless steel forgives nothing
Except a perfect seam. Stainless steel hates heat. We still like it hot.
6 advantages of stainless steel welding
High corrosion resistance to moisture, chemicals and environmental influences.
Very long service life, even under demanding operating conditions.
High strength, combined with slim, material-efficient designs.
Hygienic and leak-tight welded joints that are easy to clean.
Excellent visual quality of the weld seams
- Versatile applications in industry, engineering, construction and consumer goods
Advantages of stainless steel welding
This weighting is based on the factors that have the greatest practical influence on function, service life and cost-effectiveness in stainless steel welding. What matters is not theoretical material properties but the result after welding. The prioritisation therefore reflects what delivers the greatest long-term benefit to customers in real-world use.
- Durability35 %
- Quality and leak-tightness25 %
- Appearance20 %
- Versatility20 %
Frequently asked questions
Here you will find quick answers to frequently asked questions about Conventional Welding at Krieg Elektronik-Gehäusebau.
Which stainless steel grades can be welded reliably, and where are the limits?
Austenitic stainless steels such as 1.4301 and 1.4571 are readily weldable and the most forgiving in terms of process. Ferritic stainless steels such as 1.4016 are weldable but require controlled heat input and suitable filler materials. Martensitic stainless steels are only weldable to a limited extent and are critical in series production.
How is corrosion resistance maintained after welding?
Through clean joints, the correct filler material, controlled heat input and consistent post-treatment. Heat tint must be removed, as it destroys the passive layer. Pickling or electropolishing are not optional extras but functionally necessary.
Which welding processes are suitable for stainless steel, and when is which process technically required?
TIG is used where seam quality, control and appearance are decisive. MIG or MAG are used where higher deposition rates and cost-effective production are required. Laser welding makes sense for high repeatability, low heat input and tight tolerances. The process is chosen to suit the component, not by preference.
How is distortion minimised in stainless steel welding through design and process engineering?
Through symmetrical welding sequences, short seams, controlled tack welding and minimal heat input. Designs must be weld-friendly. Distortion is not fate – it is a sign of poor planning.
Which post-weld treatments are mandatory and which are only optional?
Removing heat tint, cleaning the weld zone and restoring the passive layer are mandatory. Cosmetic finishing such as grinding or polishing is optional unless functionally required. Corrosion protection is a must; appearance is an extra.
How is the quality of a stainless steel weld seam objectively tested and assessed?
Through visual inspection, dimensional checks, leak tests and, where necessary, mechanical tests such as tensile or tear tests. A weld seam is only good if it fulfils its function and can be produced reproducibly.
Have a project in mind?
Challenge us – we'll get it done. Tell us about your project; we'll advise you personally and work with you to turn your specifications into the right solution.