Free machining austenitic stainless steel with better machinability than standard grades 

Better machinability steels Austenitic stainless steel Valbruna Stainless Steel

Austenitic Stainless Steel

Machinability
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COMPARISON

In order to understand the level of advantages that Maxival allows, it is better to solely refer the properties of these grades compared with a free machining grade such as AISI 303 ( MAXIVAL 188HS ) and standard grades such as AISI 304 and AISI 316.
In this specific case, it appears that:

  • Maxival shows intermediate values between AISI 303 ( MAXIVAL 188HS ) and standard grades relative to corrosion resistance
  • Whilst the Maxival process greatly improves machinability, traditional AISI 303 with its high added sulphur content, is still better
  • Maxival grades have a better weldability than AISI 303, nevertheless depending on the welding process, Maxival has a different behaviour compared to standard grades. 
    This situation must be considered during the project.
  • AISI 303 ( MAXIVAL 188HS ) has poor transversal ductility and toughness.  Therefore cold formability process would be avoided.
  • Maxival grades can be cold and hot worked.

Evolution of Flank Wear of MV274MDE


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