ASTM B476-01 pdf free.Standard Specification for General Requirements for Wrought Precious Metal Electrical Contact Materials.
The manufacturer shall afford the inspector represent-ing the purchaser, all reasonable facilities to satisfy him that thematerial is being furnished in accordance with this specification.The manufacturer shall perform or have performed atleast these minimum tests to ensure conformance to thisspecification:Visual inspection at 1xfor surface defects. Al1material shall be visually free from structural defects, cracks,seams，porosity,inclusions，segregation,and other defectsdescribed in 7.1. Hardness test or tension test can be applied, but notboth unless specified by user. Dimensional inspections shall be made as required toensure conformance to tolerances specified. Spectrographic or chemical analysis when requiredby order.
Material that fails to conform to this specification willbe rejected, and the manufacturer shall be notified within 30days after receipt of the material. In the event of rejection,manufacturer and purchasershall maintain test data and samples for not less than 6 weeksfrom the date of the test reports to resolve any disputed testresults.When specified in the purchase order or contract, themanufacturer’s or supplier’s certification shall be furnished tothe purchaser stating that samples representing each lot havebeen manufactured,tested, and inspected in accordance withthis specification and the requirements have been met. Whenspecified in the purchase order or contract, a report of the testresults shall be furnished.Packaging and Package Marking:The material shall be separated by size, composition,and temper, and prepared for shipment in such a manner as toensure acceptance by common carrier for transportation and toafford protection from the normal hazards of transportation.15.2 Each shipping unit shall be legibly marked with thepurchase order number，metal or alloy designation,temper,size, shape, gross and net weight,and name of supplier.Thespecification number shall be shown when specified.
Special tolerances other than those specified hereinshall be as agreed upon by the manufacturer and purchaser.16.2Special requirements in analysis test procedures, tolerances, properties, and quality shall be as agreed upon betweenmanufacturer and purchaser.ASTM B476 pdf download.