SAE AMS 6303F:2003 pdf download

SAE AMS 6303F:2003 pdf download Steel, Bars and Forgings 0.90Si – 1.0Cr – 2.0Ni – 3.2Mo – 2.0Cu – 0.10V (0.07 – 0.13C) Vacuum Arc or Electroslag Remelted
3.4.2.1 Thickness of D-type heavy shall not exceed 0.0005 inch (12.7 µm).
3.4.2.2 A rateable field is defined as one which has a type A, B, C, or D inclusion rating of at least 1.0 thin or heavy in accordance with the Jernkontoret chart, Plate III, ASTM E 45.
3.4.3 Average Grain Size of Bars: Shall be ASTM No. 6 or finer, determined in accordance with ASTM E 112.
3.4.4 Response to Heat Treatment: Product, 4.0 inches (102 mm) and under in nominal cross-section, shall have hardness not lower than 34 HRC at any location after being heated to 1675 °F ± 25 (913 °C ± 14) held at heat for 15 to 30 minutes, and quenched in oil.
3.5 Quality: The product, as received by purchaser, shall be uniform in quality and condition, sound, and free from foreign materials and from imperfections detrimental to usage of the product.
3.5.1 Steel shall be premium aircraft-quality conforming to AMS 2300 or MAM 2300.
3.5.2 Bars ordered hot rolled or cold drawn or ground, turned, or polished, shall after removal of the standard machining allowance in accordance with AS1182, be free from seams, laps, tears, and cracks open to the ground, turned, or polished surfaces.
3.5.3 Grain flow of die forgings, except in areas which contain flash-line end grain, shall follow the general contour of the forgings showing no evidence of reentrant grain flow. 3.6 Tolerances: Bars shall conform to all applicable requirements of AMS 2251 or MAM 2251.
4. QUALITY ASSURANCE PROVISIONS:
4.1 Responsibility for Inspection: The vendor of the product shall supply all samples for vendor’s tests and shall be responsible for the performance of all required tests. Purchaser reserves the right to sample and to perform any confirmatory testing deemed necessary to ensure that the product conforms to specified requirements.
4.2 Classification of Tests:
4.2.1 Acceptance Tests: Composition (3.1), condition (3.3), macrostructure (3.4.1), micro-inclusion rating (3.4.2) average grain size for bars (3.4.3), and tolerances (3.6) are acceptance tests and shall be performed on each heat or lot as applicable.
4.2.2 Periodic Tests: Response to heat treatment (3.4.4), frequency-severity cleanliness rating (3.5.1), and grain flow of die forgings (3.5.3) are periodic tests and shall be performed at a frequency selected by the vendor unless frequency of testing is specified by purchaser.
4.3 Sampling and Testing:
Shall be as follows:
4.3.1 Bars and Forging Stock: In accordance with AMS 2370.
4.3.2 Forgings: In accordance with AMS 2372.
4.4 Reports:
The vendor of the product shall furnish with each shipment a report showing the results of tests for chemical composition, macrostructure, and micro-inclusion rating of each heat, and for condition and average grain size of each lot, and stating that the product conforms to the other technical requirements. If forgings are supplied, the size and melt source of the stock used to make the forgings shall also be included.