The Neenah Proof load test program follows AASHTO M 306 loading guidelines.
Lids are taken to failure. In the Neenah test program, the ultimate load is based on ASTM A48 Class 35B Gray Iron.
This brochure deals with the testing program here at Neenah Foundry and how age old designs have been
"modernized" using the knowledge developed in the load test program. We discuss platen lids and
reduced weight frames.
This brochure discusses quality issues and shows some details of poor quality castings.