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Material used for Peugeot Conrod Manufacture

Material used for Peugeot Conrod Manufacture

Material used for Peugeot Conrod Manufacture

Hi there,

Can anyone tell me the material used to manufacture Peugeot Conrods. i have some standard ones that I need to modify for an engine that I am doing. It would be nice before I go too far to know if the rods will stand upto the revs that I am looking for. To do this I need to know the tensile stress of the material that is used in manufacture. Cast iron is too varied as a general rule of thumb, also not sure if they are cast steel. I know that the rods are circa 1995 technology. Any one have any ideas??



RE: Material used for Peugeot Conrod Manufacture

Likely they are forged steel, similar to SAE 1541.  They could be microalloyed steel, or even a powdered metal alloy.  For tensile strength, a quenched and tempered 1541 rod would have a tensile strength between 1000 MPa and 1200 MPa.



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RE: Material used for Peugeot Conrod Manufacture

Are the rods out of the engine? Got a picture?  wide flash along the I-beam suggests a forging http://www.billzilla.org/4agrods.jpg .  Thin pebbly flash suggest a casting or PM.  A small shallow hole drilled in a non-critical area (or in a spare rod) would produce chips whose behaviour would indicate general ductility. A hardness test would help judge tensile strength.  I'd magnaflux Con rods  (new or used) that I plan on abusing, paying special attention around bolt seats and removing the bolts if necessary to get a better view, and shot-peen them for improved fatigue life.

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