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 The solution for improving machinability to stainless steel bar type 304 and 316.Austenitic stainless steel is one of the most outstanding alloys of our time, with a worldwide distribution restricted by one problem: high costs due to difficulties in machining. To offer an acceptable solution the metallurgist has studied the problem and the producer has marketed Type 303, a Type 304 (18/8 stainless alloy) with a content of sulphur ten times greater. The solution with Type 303 however has two aspects: 1) A greatly increased machinability. 2) A reduced resistance to corrosion and fatigue due to the higher content of sulphides presented in the structure. The research departments of ACCIAIERIE VALBRUNA S.P.A. have created a new product which offers the right solution to the problem of corrosion and fatigue whilst still maintaining a high degree of machinability. The result is MAXIVAL® MAXIVAL® is a technologically advanced product which offers a high machinability standard without penalizing mechanical properties and the resistance to corrosion. The basic idea behind MAXIVAL® is the substitution of the high sulphur content, producing a steel with well distributed inclusions which: 1) Break the "chips" on machining; 2) Do not wear nor overheat the tools; 3) Do not weaken the metallic matrix; 4) Do not create corrosion points. MAXIVAL® is a stainless steel resistant to corrosion, weldable and mechanically as strong as Type 304 and 316. The advantages offered to a machine shop when working with MAXIVAL® are: a) A greater number of machined pieces; b) Less tool wear; c) A reduction of down times for tool replacement. |
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