As a company in the SCHMOLZ + BICKENBACH Group, Deutsche Edelstahlwerke (DEW) have been presenting their new special steel, Corrodur 4418 Mod, this year in Nashville/USA. The extremely high-performance steel, also known as Super 13Cr, is characterized by high strength, outstanding toughness and good resistance to pitting and stress corrosion. It thus exceeds conventional chrome steels in terms of performance considerably.
Corrosive media, such as acid gases or chloride, constantly attack the materials-handling technology at high temperatures in the oil and gas extraction sector. Corrodur 4418 Mod takes over where conventional chrome steels reach their limits and offers users an extremely high-performance material solution.
With this steel grade, DEW were one of the very first steel manufacturers to be qualified by the leading oil and gas company, Statoil ASA (since 2018: Equinor ASA) according to NORSOK M650 for a strength level of min.
Increased performance with unchanged dimensions
Deutsche Edelstahlwerke has managed to improve the steel’s properties by means of controlled heat treatment. With a tensile strength of at least 862 MPa, a yield strength of 758 MPa and a toughness of at least 81 J at –10 °C, Corrodur 4418 Mod is far superior to conventional 13% chrome steels. The very good resistance to pitting and stress corrosion is a noteworthy attribute.
What is more, the steel’s high strength opens up greater scope to users when it comes to dimensioning components and planned increases in performance with unchanged dimensions.
“We were delighted to present our special steel to a wide trade audience already. Over and above this, we very much look forward to talking with other experts,” says Peter Grüneberg, Senior Key Account Manager Specials at DEW.
All stainless steels for plastic moulds combine quality and machinability
Demand for stainless steel plastic moulds is also on the rise. Deutsche Edelstahlwerke (DEW) has put together a package of all-stainless materials especially for the requirements of industry.
Plastic bottles, yoghurt pots, car seats or syringes: these everyday products have more in common with each other than just their main component – plastic: almost every plastic product has its origin in a mould or tool made of stainless tool steel. The trend in plastic mould construction is toward moulds made entirely of stainless tool steel.
However, mould makers can often only machine stainless steels for their purposes with high machining costs. DEW has developed three stainless tool steels for various areas of application in order to meet both the increasing quality demands of industry and the requirements of machinability in the long term.
This "All Stainless Concept" consists of the materials Formadur 2083 Superclean, Formadur PH X Superclean and Corroplast. All three steels are corrosion-resistant, hard and at the same time easy to machine. In addition, each material shines in its own right with further positive properties.
Highly versatile: Formadur 2083 Superclean
Formadur 2083 Superclean impresses with its excellent wear resistance and polishability. In addition, the steel is very tough and easy to machine. Despite its very good corrosion properties, the all-rounder can be textured. Formadur 2083 Superclean is suitable for injection moulding, compression moulding and extrusion in plastics processing.
Polishable and acid-resistant: Formadur PH X Superclean
Formadur PH X Superclean combines strength and toughness and is the first choice in terms of polishability. The steel also impresses in terms of weldability because it contains a low carbon content. Due to its extremely high resistance, Formadur PH X Superclean is particularly suitable for processing plastics such as PVC or aminoplasts, as the moulds often have to struggle with acid deposition.
Easy to machine and yet extremely robust: Corroplast
Corroplast is characterised by a unique balance between very good machinability and consistently good corrosion behaviour. The properties of the steel are adjusted precisely according to the requirements with a targeted metallurgical treatment for sulphur distribution and heat treatment. The main areas of application for Corroplast are base plates, structural parts and plastic moulds.
Deutsche Edelstahlwerke is one of the world’s leading manufacturers of special steel long products. They can look back on over 160 years of experience in the production of high-grade steel products. The range of products is unique worldwide and includes tool steels, stainless, acid and heat-resistant steels, engineering and bearing steels, and special materials.
The product portfolio ranges from 0.7 mm drawn wire to forged products of up to 1,100 mm in diameter. Deutsche Edelstahlwerke customers receive the entire manufacturing chain from a single source: from production to prefabrication to heat and surface treatment.
Deutsche Edelstahlwerke is a company of the SCHMOLZ + BICKENBACH Group
The SCHMOLZ + BICKENBACH Group is one of the world's leading providers of individual solutions in the special long steel products sector. The Group is one of the leading manufacturers of tool steel and non-corrosive long steel on the global market and one of the two largest companies in Europe for alloyed and high-alloyed quality and engineering steels.
With more than 10 000 employees and its own production and distribution companies in more than 30 countries on 5 continents, the company guarantees global support and supply for its customers and offers them a complete portfolio of production and sales & services around the world. Customers benefit from the company's technological expertise, consistently high product quality around the world as well as detailed knowledge of local markets.