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Key steel BS4235

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sbwhart:
Does any one know if key steel can be hardend and tempered like gauge plate.

I want to make a form tool out of it for cutting brass.

Tried to get a copy of BS4235 but they charge £120 for it on line, strewth   :bugeye: use to be able to get them for free when i was working for a living with the company picking up the tab.

  :D

Stew

John Stevenson:
Provided that it is proper key steel then yes it can.

Key steel is 0.45% carbon, 0.25% silicon, 0.7% manganese, 0.05% sulfur and 0.05% phosphur
EN9 is the closest commercial steel with all the above figures except that the carbon has been increased to 0.50% from 0.45%

John S.

John Rudd:
Stu

I'll try and d/l a copy of the BS when I get to work on Monday....We have a subscription to a site  :coffee:

sbwhart:
Thanks John and John

Thats great information, I was going to order some from macmodels but I'll check on the spec with them first, there is one or two people who do supply to the BS spec but they are more geared to commercial quatities.

Getting access to info like that is one of the few things I miss work for, that and their big scanner/plotter

 

Stew

Fergus OMore:
Cromwell Tools has a depot in Chester and has large quantities of ground gauge plate.

No connection apart from being usually a satisfied customer.

If you are desperate, you can use old allen keys as lathe tools!

Regards

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