The material of the main shaft is high-quality 50Mn carbon structural steel, with a C content of 0.48% to 0.56%, Si content of 0.17% to 0.37%, Mn content of 0.7% to 1.0%, S content less than 0.035%, P content less than 0.035%, Cr content less than 0.25%, Ni content less than 0.30%, and Cu content l...
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