BUMAX® SDX 109 - Bumax Fasteners

High strength with extreme corrosion resistance

BUMAX SDX 109 is a high-strength corrosion-resistant super duplex fastener suitable for highly aggressive environments. Due to the grade’s high chromium and molybdenum content, super duplex grades provide even greater corrosion resistance than duplex grades.

BUMAX SDX 109 is a premium A4/316L stainless steel grade with higher corrosion resistance than conventional A4/316 fasteners (e.g. A4-80), while providing strength equivalent to 10.9 carbon steel. The grade’s extreme corrosion resistance makes it suitable for highly corrosive environments.

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Stainless steel fasteners with enhanced properties

BUMAX SDX 109 fasteners outperform generic super-duplex fasteners in terms of:

High strength

Corrosion resistance

Thermal expansion coefficient

Ductility

Fatigue resistance

These enhanced properties are achieved by using premium super-duplex stainless steel that is produced to stringent BUMAX specifications by the highest quality European steel mills. Our expert fastener manufacturing processes ensure a high-performance product that is extremely reliable.

Fasteners for demanding applications

BUMAX SDX 109 fasteners are used for applications in petrochemical industries and in splash zones on offshore assets. Typical applications for BUMAX SDX 109 include heat exchangers in refineries, injection and ballast water systems, petrochemical industries, offshore platforms and power industries.