自2007年12月起，SAE航空航天材料部已宣布本规范“取消”。通过这一行动，本文件将保留在航空航天材料规范索引的数字部分，表明其已被“取消”。取消的规格可从SAE获得。以下规范涵盖了类似但不一定完全相同的产品。然而，本清单仅供参考，不构成用这些规范代替“已取消”规范的权力。棒材、锻件和管材SAE AMS 6431，钢、棒材、锻件和管材，1.05Cr–0.55Ni–1.0Mo–0.11V（0.45-0.50C），真空自耗电极重熔板材、带材和板材SAE AMS 6439，钢、板材、带材和板材，1.05Cr–0.55Ni–1.0Mo–0.12V（0.42-0.48C），自耗电极真空熔化退火本规范规定了采购真空熔化铬的要求- Mo-V-Ni，D6AC型钢锻坯，再锻坯，棒材，棒材，板材，薄板和带材。

This specification has been declared “CANCELLED” by the Aerospace Materials Division, SAE, as of December, 2007. By this action, this document will remain listed in the Numerical Section of the Index of Aerospace Material Specifications indicating that it has been “CANCELLED”. Cancelled specifications are available from SAE. Similar but not necessarily identical products are covered in the following specifications. However, this listing is provided for information only and does not constitute authority to substitute these specifications for the “CANCELLED” specification.Bars, forgings, and tubing SAE AMS 6431, Steel, Bars, Forgings, and Tubing,1.05Cr – 0.55Ni – 1.0Mo – 0.11V – (0.45-0.50C), Vacuum Consumable Electrode RemeltedSheet, strip, and plate SAE AMS 6439, Steel, Sheet, Strip, and Plate, 1.05Cr –0.55Ni – 1.0Mo – 0.12V – (0.42-0.48C), Consumable Electrode Vacuum Melted AnnealedThis specification establishes the requirements for procuring vacuum melted Cr-Mo-V-Ni, type D6AC steel forged billets, reforging stock, bars, rods, plate, sheet, and strip.