[TheForge] steel idntification

Fri Apr 18 00:33:02 2003

Sheldon:  Piston sleeves are designed to operate at elevated temps for
extended periods and likely contain generous amounts of molybdenum.  Such
steels are very "red hard" in forging and must be worked with good orange
color present.

Anneal by fully submerging in PREHEATED vermiculite and allow to cool
slowly.  If annealed, the steel will scratch readily with a file.

Steels containing molybdenum are AIR HARDENING and have critical temps in
excess of 1850 degrees F.  Do you want/need to harden them?  If so, write me
back and I can give you specifics so I don't have to be long-winded here.

                                        Grant Marcoux
----- Original Message -----
From: "Sheldon Laing" <[email protected]>
To: <[email protected]>
Sent: Thursday, April 17, 2003 10:51 AM
Subject: [TheForge] steel idntification

Hi all,

I have a few engine sleeves (the things that pistons run up and down
inside of to prevent wear on the engine block) and I was wondering if
anyone knows what kind of tool steel this is? I found a few of them in a
scrap pile in a railway yard. It look like each piston is about 1 litre
(I thinks that's about 60 cubic inches) and I found 4 of them, however I
think it is from a bigger motor than a 4 litre (300 cubic inches). Any
ideas on what kind of steel and any tempering advice?
Thanx in advance for you help.

Sheldon Laing
Hephaestus Forge
Cape Town
South Africa
[email protected]

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