MIL-S-980B
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时间:2024-05-11 16:30:04
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MIL-S-980B, MILITARY SPECIFICATION: STEEL, CHROMIUM ALLOY, BARS (FOR TORPEDO GYROSCOPE BEARINGS) (02 JUL 1965)., This specification covers spheroidized chromium alloy steel bars of special metallurgical quality in sizes 1 inch and under in diameter, for use in torpedo gyroscope bearings requiring a finish of minimum surface roughness.
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