P/M steel matches impact strength of wrought bar, plate.

A powder metallurgy steel that is said to match the tensile strength, elongation, and impact strength of wrought low-carbon bar and plate was reported in a paper presented at the MPIF/APMI [PM.sup.2]TEC conference in New Orleans, Louisiana, May 13 to 17. According to authors Thomas Fleming of Metco Industries, St. Marys, Pa.; and William Alcini of NTN Technical Center, Ann Arbor, Mich., the P/M steel was developed as an economical solution for products requiring significant elongation and impact strength. The approach is to infiltrate copper during the sintering of an ...