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【范围】
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1.1 Form
This specification covers an aircraft-quality, low-alloy, heat-resistant steel in the form of bars, forgings, and forging stock.
1.2 Application
These products have been used typically for parts such as turbine discs, compressor discs, and fasteners, for service up
to 1050 °F (566 °C), but usage is not limited to such applications.strRefField
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