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Which hardness to choose for fixture components

Madis Reivik

Hot Rolled
Joined
Jan 23, 2011
Location
Estonia
Hello !

I'm making a fixture for milling aluminium cast parts and have a need for couple guiding / alingment details. I make these from ARNE tool steel and want to harden these for better wear resistance (cast parts sliding on-off from fixture, about 5k to 10k parts minimum.

I want to make fixture parts, harden in oil, temper and then machine the guide surface with carbide endmill.

What HRC is suitable ? 45 ? 50 ?
 








 
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