Objective The production of cold formed high strength fasteners with yield strengths greater than 600 N/mm² currently necessitates a hardening and tempering operation being carried out on the formed component. Significant cost savings would be achieved if this heat treatment could be eliminated and, in principle, this would be possible by the development of an initial bar or rod microstructure which could be strengthened by a combination of drawing and cold forming, with the final properties produced by a low temperature stress relief operation. Whilst this approach has already been considered for a limited range of steel types and component shapes in both Japan and Europe, there is urgent need for a systematic study to establish the optimum composition and microstructure for a given component strength level in various size ranges. The behaviour of the final product also requires assessment to demonstrate that the bolt properties obtained without heat treatment are acceptable. Programme(s) ECSC-STEELRES 7C - Medium-term guidelines (ECSC) "technical steel research", 1986-1990 Topic(s) F3 - Special and alloy steels Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator BRITISH STEEL, SWINDEN TECHNOLOGY CENTRE EU contribution No data Address Moorgate S60 3AR ROTHERHAM United Kingdom See on map Total cost No data
