Material used for Peugeot Conrod Manufacture

[EBDMatt]

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

 

[CoryPad]

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

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[Tmoose]

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.