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Material used for Peugeot Conrod Manufacture

Material used for Peugeot Conrod Manufacture

(OP)
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??

Thanks,

Matt

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.

Regards,

Cory

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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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