Robert und Wolfgang OHG
Materials & processing
Materials for modern mechanical engineering solutions
In modern machine and plant engineering, the correct choice of materials is crucial for performance, reliability and service life. Different requirements from industry, food technology and special-purpose machinery call for tailored material solutions that meet mechanical, hygienic and economic criteria.
We rely on a wide range of proven materials and process them precisely and in an application-oriented manner – from individual components to complex assemblies.

Stainless steel
Stainless steel is one of the most important materials in hygienic machine and plant engineering. It offers very high corrosion resistance, good mechanical strength and excellent cleanability, thus meeting key requirements in the food and packaging industries.
In mechanical engineering, stainless steel is used in particular for product-contact components, conveying technology, housings, frames and system components. Depending on the environment – such as aggressive cleaning agents or high humidity – different alloys are used. Surface finishing such as grinding or pickling further improves hygienic and functional properties.

Aluminium
Aluminium is used in mechanical engineering wherever an optimal balance of weight, strength and machinability is required. Due to its low density, it is particularly suitable for moving assemblies, modular constructions and dynamic systems in production facilities.
Typical applications include machine frames, protective enclosures, support structures as well as guide and structural elements. Aluminium allows precise machining and flexible design, making it especially attractive for modern, lightweight and efficient machine solutions.

Non-ferrous metals
Non-ferrous metals are used in mechanical engineering wherever specific functional properties are required. These include good sliding properties, high wear resistance, corrosion resistance or electrical conductivity.
Typical applications include bearing bushings, guide and sliding components, fittings, fastening elements as well as electrical or thermal parts. Copper, for example, is often used for conductive components, while bronze and brass are used in sliding and precision parts. Aluminium alloys complement the range where additional strength is required combined with low weight.

Engineering plastics
Engineering plastics are essential in modern mechanical engineering, particularly for wear-optimised and functional components. They are used wherever friction needs to be reduced, noise development minimised or metal-to-metal contact avoided.
Typical applications include sliding elements, guides, bearing points, scrapers as well as components in conveying and transport systems. Depending on the material (e.g. PE, PA, POM or PTFE), properties such as wear resistance, temperature resistance and chemical resistance can be specifically tailored to the respective machine environment. In the food sector, only suitable, standards-compliant materials are used.

Structural steels
Structural steels are primarily used in mechanical engineering for load-bearing and highly stressed constructions. They are characterised by good strength, excellent weldability and cost-efficient material properties.
In industrial applications, structural steels are often used as the basis for machine frames, base structures, support systems and non-product-contact structural components. Depending on requirements, they are protected against corrosion and adapted to the respective application through painting, powder coating or other surface treatments.
