MPIF releases guide to US part buyers

Steel sets record for Young's modulus SUMITOMO Metal Industries has produced a particle-reinforced steel with a Young's modulus of 265 to 285 GPa -- the highest yet achieved for steel. Advanced Materials and Processes ( M a t e r i a l s Park, Ohio, USA) reports that the steel's high level of stiffness is achieved through a three-stage production process. It begins with the mechanical alloying of oxides of iron, carbon and yttrium, which are comminuted to ultrafine particles in a ball mill. Following milling, the powder is sealed in a capsule and hot extruded. In the final step, the extruded material is heat t r e a t e d at t e m p e r a t u r e s of 1200 to 1400°C, enabling both primary and secondary recrystallization. The steel's composition is Fe- (13-16) Cr- (1-3)A1-0.5 (Y20 + Yb~O3). T e n s i l e y i e l d strength is reported as 600 to 900 MPa, u l t i m a t e t e n s i l e strength is 700 to 900 MPa and elongation 10-20%. Sumitomo produces the steel as bar, but says it can be fabricated into pipe and sheet. Sumitomo Metal Industries Ltd; tel: 4 8 1 - 6 - 2 2 0 - 5 1 1 1 ; fax: + 81-6-223-0305.

Sand k Group announces new president SANDVIK Group of Sweden has appointed Clas ]~ke Hedstr6m as its p r e s i d e n t and chief executive officer. Hedstr5m, aged 65, joined Sandvik C o r o m a n t in 1965 straight from the Royal Institute of Technology was appointed president of Sandvik Coromant in 1984 and of the 8andvik Tooling Business Area in 1992. He replaces Per-Olof Eriksson, who has held both positions for the past ten years. Eriksson continues as a Sandvik director, while Percy Barnevik remains Group chairman.

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MPR June 1993

Practice bullets m a d e with M I M PRACTICE bullets that disintegrate on contact with their target are being produced via metal injection moulding (MIM) by UK firm Royal Ordnance Specialty Metals (ROSM). The Wolverham ptonb a s e d firm p r o d u c e s t h e a m m u n i t i o n from a heavy alloy t h a t is almost pure t u n g s t e n . The bullets are pressed to near-net shape, before sintering to deliberately low strength values. Royal Ordnance Specialty Metals; tel: ~- 44-902783939; f a x : + 4 4 - 9 0 2 783352

M P I F releases

guide to US part buyers

THE Metal Powder Industries

listed. Information on manu-

part producing members. The 96-page booklet gives t h e production capabilities of 85 m a n u f a c t u r e r s of p o w d e r m e t a l l u r g y (PM) p r o d u c t s m a d e from steel, stainless steel, copper, brass, bronze, aluminium, titanium, nickel, tool steel, s u p e r a l l o y and tungsten metal powders, Members of t h e Powder Metallurgy Parts Association, Metal P o w d e r T e c h n o l o g y Association and Metal Iajection Molding Association are

als and speciality products are provided for each company. The MPIF, together with the American Powder Metallurgy Institute (APMI), has also released its 1994 "Publications Update", outlining the titles it has available on PM and particulate materials. Metal Powder Industries Felon; tel: + 1-609-4527700; f a x : + 1-609-987. 8523.