MEX 2017 Launch of plastic mould steel for precisely shaped and complex geometries

Editor: Briggette Jaya

Germany – At Moulding Expo, Deutsche Edelstahlwerke will present its newly developed Formadur 400 for the first time. This plastic mould steel sets a technological milestone in the area of surface quality, the company, which is a subsidiary of the Schmolz + Bickenbach Group, says.

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Mould frames made of Formadur 400.
Mould frames made of Formadur 400.
(Source: Deutsche Edelstahl)

According to D. Edelstahl, to achieve high surface finishing, this pre-hardened steel is characterised by a homogenous micro-structure with a hardness range of 365 - 410 HB. Due to this, Formadur 400 offers high-polish ability, which in turn considerably improves product quality in plastic injection moulding, for example, in splash boards and tailgates.

Plastic products must meet high requirements for accuracy in size and fit in every industry – from moulds for flat-screens to bumpers for the automotive industry. This steel has been specially developed as an enhancement of the pre-hardened standard grades 1.2311 and 1.2738. Thus Formadur 400 is good for precise and efficient manufacturing of complex and large-shaped moulds for plastic forming, the company adds.

Furthermore this steel offers good machinability, weldability and a hardenability through to its core. Formadur 400 is said to have a high homogeneous hardness profile of approximately 400 HB across the whole cross section to allow it to have a high-polish ability and good texturing properties.

For even higher polishing ability, D. Edelstahlwerke offers this steel in electro-slag-remelted condition – Formadur 400 Superclean. The re-melting process leads to high polishing results due to an even more homogeneous micro-structure, the company adds. For applications requiring a lower hardness level of up to 355 HB, D. Edelstahlwerke is also launching the pre-hardened plastic mould steel, Formadur 320, at the show. This material is also available in Superclean condition. With these two plastic mould steels from the Formadur product family, the company claims to offer very high quality for a wide range of tools and plastic products.