Best Steel Type for a Toolpost

This topic has 2 replies, 2 voices, and was last updated 24 August 2011 at 14:55 by Clive Hartland.

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24 August 2011 at 12:08 #73817
Scrim
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@scrim
I have a choice of:

EN1A Mild Steel, or D2 Tool Steel (annealed)

to make a set of lathe toolposts.

Would hardened tool steel give a noticeably sturdier support?

I get the impression EN1A is softer than the average bit of mild steel you find lying around. Would EN1A be tough enough to prevent threads stripping when tool clamping bolts are over tightened (M6, 15mm deep threaded hole)?

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24 August 2011 at 12:08 #5628
Scrim
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@scrim
24 August 2011 at 14:55 #73826
Clive Hartland
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@clivehartland94829
If for modelling use i would use the EN1A, but if for serious production and continuous work then the tool steel.

15mm of M6 thread has a tensile of about 2000lb so I doubt it will strip? Its governed by the screw itself.

The EN1A will machine easier as it is free cutting with lead in the steel. It just wont weld!

Clive
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Best Steel Type for a Toolpost

Best Steel Type for a Toolpost

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