The chemical composition of every alloy melt is tested and recorded into our database. We then electronically store the records for an indefinite period. This test is performed to ensure the alloy performance properties are to the specifications of the customer. Casting alloys are typically specified as per ASTM, AMS and SAE alloy specifications. The alloy composition is analyzed by spectrographic atomic absorption (spectrometer).
To confirm the properties of the metal cast part are correct, mechanical testing is performed to approve the metal of the casting. The testing confirms the properties comply per the specified mechanical requirements. The below mechanical properties testing is done to confirm proper casting quality.
• Hardness testing: A non-destructive procedure that demonstrates the alloy’s machinability and wear resistance.
• Tensile testing: A destructive casting quality test that provides ultimate tensile strength, yield strength, elongation and reduction of the material test specimen.
• Load testing: This test is performed on the entire casting lot to evaluate its casting quality, and to verify that the cast part can carry (deflect) the required or specified structural load when applied. Pressure-containing parts can be hydraulically tested to a proof load or destruction maximum limit.