Chemical industry components require BÖHLER steels with excellent corrosion resistance and stability. Key quality features include ultra-clean materials, full traceability, controlled heat treatment, and rigorous testing for safe, reliable operatio
Components used in the general chemical industry are exposed to highly aggressive environments, including corrosive media, elevated temperatures, pressure fluctuations, and complex chemical reactions. Equipment such as reactors, valves, pumps, and piping systems must ensure safe and reliable operation over long service periods. Material requirements are therefore focused on excellent corrosion resistance, resistance to pitting and stress corrosion cracking, high-temperature stability, and adequate mechanical strength. In addition, materials must maintain structural integrity and dimensional stability under combined chemical and mechanical loading.
BÖHLER high-performance steels and alloys are specifically developed to meet these demanding chemical industry requirements. Advanced stainless steels, including austenitic, duplex, and precipitation-hardened grades, as well as highly alloyed materials, provide an optimized combination of corrosion resistance and mechanical performance. Produced using advanced melting and refining technologies, BÖHLER materials ensure superior cleanliness, low inclusion levels, and homogeneous microstructures, which are essential for long-term reliability. Key quality features include strict control of chemical composition, certified traceability, and validated heat treatment processes. Comprehensive testing, including corrosion behavior, mechanical performance, and non-destructive inspection, ensures compliance with industry standards. BÖHLER materials enable safe, durable, and efficient solutions for critical chemical processing applications.
BÖHLER A903 (UNS S32205) is the most common stainless ferritic-austenitic Cr-Ni-Mo steel with nitrogen addition. In addition to good strength properties, this steel offers high corrosion resistance, especially against stress corrosion cracking in chloride-containing solutions, and is resistant to intergranular corrosion up to 300°C. The alloy should not be used at temperatures above 300°C due to embrittlement. Heat treatment after welding is not necessary. Required surface finish: pickled, scale-free heat treated or machined. Commonly used in the oil and gas industry, hydroelectric power, pressure vessels, pulp and paper industry, components and chemical tanks, such as parts for separators and heat exchangers and parts in the paper industry, oil and gas extraction , compressors, seawater desalination.
Read MoreBÖHLER A911SA is a ferritic-austenitic stainless steel of Type 25%Cr with PREN of min. 40. It offers excellent corrosion resistance against general corrosion, stress corrosion cracking, corrosion fatigue, pitting, crevice and erosion corrosion and possessing very high mechanical strength properties. However, it contains less copper compared to other super Duplex SS but a deliberate addition of tungsten instead, claimed to selectively improve corrosion resistance. Good weldability, post weld heat treatment not necessary. Max. temperature for long periods of service: 280°C (535°F ) / (300°C/570°F possible for short periods). Surface condition for optimum corrosion resistance: pickled or machined. Components in offshore, waste water, sea water desalination and chemical plants with aggressive chloride-containing media e.g. heat exchangers, separator parts, compressor and pump components, turbine blades.
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