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Jenama: Gnee Steel
Unit Jualan | : | Metric Ton |
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Komposisi kimia 440F keluli tahan karat terutamanya termasuk unsur-unsur seperti besi, kromium, karbon, molibdenum dan kobalt, di antaranya kandungan karbon adalah 0.95-1.20%. Ia adalah keluli tahan karat karbon tinggi dan tinggi-kromium, milik keluli tahan karat martensit. Ia mempunyai rintangan kakisan yang baik, kekerasan yang tinggi dan rintangan haus yang baik, tetapi ketangguhan yang lemah. Kekerasan rawatan habanya boleh mencapai 60-62 HRC. Ia digunakan terutamanya untuk mengeluarkan bahagian mekanikal seperti alat pemotongan, galas dan injap.
Element | Minimum | Maximum |
Carbon | 0.95 | 1.20 |
Chromium | 16.0 | 18.0 |
Iron | Balance | — |
Manganese | — | 1.25 |
Molybdenum | — | 0.60 |
Nickel | — | 0.75 |
Nitrogen | — | 0.08 |
Phosphorus | — | 0.04 |
Selenium | — | 0.15 |
Silicon | — | 1.00 |
Sulphur | — | 0.030 |
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.