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Alan Gordon 4	16/08/2020 17:04:00
129 forum posts 13 photos	My present project is the construction of the Vega Twin IC engine. The plan suggests using Free Cutting Stainless steel for valves etc. So excuse the daft question but does Drill Rod have the similar properties ?
JasonB	16/08/2020 17:06:29
25215 forum posts 3105 photos 1 articles	I always make my valves from 303 Stainless, a lot nicer to machine and no risk of rusting.
Chris Evans 6	16/08/2020 17:33:22
2156 forum posts	Plus 1 for 303
Mike Poole	16/08/2020 18:21:04
3676 forum posts 82 photos	Exhaust valves have a very hard life at elevated temperatures, drill rod is just a high carbon steel and will suffer from corrosion as an exhaust valve. Mike
Kettrinboy	16/08/2020 18:54:17
94 forum posts 49 photos	I think "drill rod" is agar the Americans call silver steel, free cutting stainless is in old money EN58AM or free cutting stainless iron, it's nice stuff to machine and much better than silver steel. Edited By Kettrinboy on 16/08/2020 18:55:36 Edited By Kettrinboy on 16/08/2020 18:58:22
Alan Gordon 4	16/08/2020 20:28:45
129 forum posts 13 photos	Thank you gentlemen, good advice, many thanks.

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