SAE J434:2017 pdf free
SAE J434:2017 pdf free.Automotive Ductile (Nodular) lron Castings
The foundry shall exercise the necessary controls and inspection techniques to insure compliance with the typical hardness range. Brinell hardness shall be determined according to ASTM E 10,Standard Test Method for Brinell Hardness of Metallic Materials, after sufficient material has been removed from the casting surface to insure representative hardness readings. The 10mm tungsten ball and 3000kg load shall be used unless otherwise agreed upon.
The graphite component of the microstructure shall consist of at least 80% spheroidal graphite conforming to Types I and II (per ASTM A247) in Fig. 1 (nodularity rating chart developed by the Ductile Iron Society may be used as a guide). The matrix microstructure shall consist of ferrite, ferrite and pearlite，pearlite， tempered pearlite， or tempered martensite，or a combination of these. The microstructure shall be substantially free of primary cementite. The microstructure shall be substantially free of undesirable carbides, the details of which are agreed upon between the casting manufacturer and the purchaser. Examples of matrix microstructures for each grade are shown in Fig. 2.
It is the responsbility of the manufacturer to demonstrate process capability. The specimen(s) used to do so shall be of a configuration and from a location agreed upon between the manufacturer and the purchaser. Sampling plans shall be agreed upon between the manufacturer and purchaser.
The manufacturer shall employ adequate controls to ensure that the parts conform to the agreed upon requirements.
Minor imperfections usually not associated with the structural functioning may occur in castings. These imperfections are often repairable; however, repairs should be made only in areas and by methods approved by the purchaser.Purchaser and manufacturer may agree to additional casting requirements, such as manufacturer identification, other casting information, and special testing. These should appear as additional product requirements on the casting drawing.SAE J434 pdf free download.
