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Old 09-20-2017, 07:21 AM   #1
Rudy
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Default Leaded steel

I have access to some "leaded steel". I'm told it's easy to machine, but not weldable. Would this be an alternative to cast iron for cylinders?


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Old 09-20-2017, 08:42 AM   #2
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Quote:
Originally Posted by Rudy View Post
I have access to some "leaded steel". I'm told it's easy to machine, but not weldable. Would this be an alternative to cast iron for cylinders?
Cylinders for what?


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Old 09-20-2017, 08:48 AM   #3
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My next (seccond) project will be a Farm Boy hit and miss engine. I'm also thinking general material compatibility. If leaded steel was compatible with aluminium pistons for instance.
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Old 09-20-2017, 03:53 PM   #4
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Default Leaed Steel

Rudy,
It's fun to machine bt has little corrosion resistance. Not sure how it would react to combustion products.
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Old 09-20-2017, 04:04 PM   #5
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If you are talking about 12L14 leaded steel or similar, it makes good cylinders for IC engines of all types. I have made many in the last 15 years and have had no problems.

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Old 09-20-2017, 05:04 PM   #6
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If coupled with an aluminum piston the piston must have cast Iron rings.
The piston should have enough clearance to have a sliding fit (about 1/1000 per inch diameter) after accounting for the differential expansion.

Aluminum 21-25 ppm/*C
Steel 15 ppm/*C
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Old 09-21-2017, 01:54 AM   #7
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12L14 leaded is very acceptable for IC cylinders.... that what is specified in Lee Hodgens radials which use 2024 aluminum for pistons
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Old 09-21-2017, 06:39 AM   #8
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Thanks guys. This is really usefull information.
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Old 09-22-2017, 12:32 AM   #9
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Consider yourself lucky! Leaded steel is well known for good machining characteristics thus is used widely where better grades of steel are not needed.
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Old 09-22-2017, 11:32 AM   #10
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Leaded steel easily finish to mirror, to me it feels "slippery" like lubricated in line with the fact that the chip slide easily over the tool edge. This property makes if desirable for cylinders BUT it rust as you look at it which makes it undesirable unless is kept coated with oil, most probable with an internal combustion engine.


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