American equivalents (steel)

American equivalents (steel)

This topic has 8 replies, 6 voices, and was last updated 15 December 2020 at 11:44 by William Howcroft.

Viewing 9 posts - 1 through 9 (of 9 total)

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21 February 2016 at 03:29 #226246
Nick_G
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@nick_g
.

I have a set of drawings from American origin for an engine I am considering building.

They list for certain parts a grade of steel as A311. This stuff :- **LINK**

What is the UK EN designation for this please. I have looked on the web, but it's all Greek to me.

Cheers, Nick

Edited By Nick_G on 21/02/2016 03:32:09
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21 February 2016 at 03:29 #29575
Nick_G
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@nick_g
21 February 2016 at 03:50 #226247
Peter Krogh
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@peterkrogh76576
It's most commonly known here in the US as 1144. That might yield a better search result for you.

Pete
21 February 2016 at 07:25 #226252
Roger Provins 2
Participant
@rogerprovins2
There was and early post on this subject.

http://www.model-engineer.co.uk/forums/postings.asp?th=44783

Edited By Roger Provins 2 on 21/02/2016 07:26:43
21 February 2016 at 07:27 #226253
JasonB
Moderator
@jasonb
Yanks favorite metal for model crankshafts. I either use black Mild steel which does not move about much or EN8 and take care to balance the cuts and let it rest. Or go for a built up crank.

Basically its heat treated to remove any internal stress so won't move about when you start making unbalanced cuts in it.
21 February 2016 at 07:31 #226254
Raymond Anderson
Participant
@raymondanderson34407
Hi Nick, A311 is an ASTM designation, the equivalent AISI code is as Peter mentioned AISI 1144. [ Stressproof ] I have used it a few times and it is tough, but nice to machine. Not quite as tough as AISI 4340 [EN 24 ] . With the correct insert it can leave a lovely surface finish.
21 February 2016 at 08:11 #226255
JasonB
Moderator
@jasonb
If its the engine we were talking about then substitute EN1A for the cam lobe blank and Stainless 303 for the valves.

J
21 February 2016 at 11:19 #226285
Nick_G
Participant
@nick_g
.

Cheers guy's.

Yes Jason it is that Hoglet V twin.

Nick
15 December 2020 at 11:44 #513616
William Howcroft
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@williamhowcroft68688
https://tubingchina.com/1144-Stressproof-equivalent-steel.htm
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