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Latest RP materials to show up at Farnborough

An EOS Electro Optical Systems (UK) product story
Edited by the Engineeringtalk editorial team May 21, 2008

Components made from the latest laser-sintering powders will be on show at Farnborough Air Show 2008.

Additive layer manufacturing applications in rapid manufacturing and prototyping are being continually extended with the introduction by EOS of new powders for laser-sintering in its Eosint metal and plastic processing machines.

Components made from the latest materials will be on show at Farnborough Air Show 2008.

EOS MaragingSteel MS1 is a new, martensite-hardening steel of high strength and toughness, suited to production of high-performance parts for the aerospace industry.

It is at least on a par with, or even superior to, conventional tool steels.

The material's composition corresponds to US classification 18 maraging 300, European 1.2709 and German X3NiCoMoTi 18-9-5.

It is easily machinable after the building process, has a tensile strength of 1950MPa and can be post-hardened to approximately 55 HRC by simple thermal age hardening.

EOS has also developed nickel and titanium alloy powders that open up further applications in the aerospace industry for the manufacture of solid, functional components.

Cobalt-chrome and stainless steel are additional metal powder materials available.

A polyamide powder has been introduced by EOS claimed to be the first ever flame retardant plastic material for laser-sintering.

Designated PA2200FR, it complies with relevant aerospace regulations such as JAR/FAR 25, Appendix F, Part 1 for flammability and Part 5 for smoke density as well as ABD0031/AITM 3.0005(2) (Airbus) and BSS 7239 (Boeing) for smoke toxicity.

Moreover, the classification V0 according to the UL94 specification is certified, which means that the material is qualified for end product applications in aircraft.

Wall thicknesses down to 2 mm may be achieved with this material.

CarbonMide is another plastic material that is finding applications in the aerospace sector.

It comprises carbon fibres in a polyamide powder matrix and is said to be 25% lighter than glass-filled powder, yet has high stiffness and strength, making it suitable for producing functional prototypes for mechanical or aerodynamic testing.

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