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S-2工具鋼圓錐滾子是為達到極限強度而設計的，可滿足承受強烈沖擊所需的韌性和強度，全部硬化處理，具有高強度、高沖擊韌性、高耐磨性能和高疲勞壽命等特點，可以用于耐沖擊和重負荷的行業(yè)領域。公司產品嚴格按照國家標準GB/T 25767-2010 《滾動軸承 圓錐滾子》進行生產和檢驗。S-2工具鋼圓錐滾子常用于礦山冶金及油田設備和海上鉆井操作，在巖石和粉泥漿料磨耗方面提供良好的服務。
| Material | AISI | Military ASTM | UNS AMS | DIN | JIS/SUJ |
| S-2 Tool Steel | S-2 | A-681 | T-41902 |
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| Additional testing may be required to certify that materials comply with specific standards. | |||||
材料成分
S-2 / Rockbit Cylindrical Rollers are manufactured to the following 化學成分
| Chemical Analysis | |
| Carbon | 0.47% to 0.55% |
| Manganese | 0.30% to 0.50% |
| Silicon | 0.90% to 1.10% |
| Molybdenum | 0.30% to 0.60% |
| Phosphorus | 0.030% maximum |
| Sulphur | 0.030% maximum |
| Vanadium | 0.5% maximum |
物理性能
Hardness as measured on parallel flat surfaces is Rockwell “C”55-59.Roller of special hardness are available upon request.
| Tensile strength抗拉強度 Yield strength屈服強度 | 310,000 psi 290,000 psi |
| Elongation in two inches伸長率 | 7% |
| Reduction in area收縮率 | 25% |
| Modulus of elasticity彈性模量 Density密度 | 30,000,000 psi 0.283 lbs./cu.in |
AVAILABLE GRADES AND SIZES
| Size Range in Millimeters | Dia: Minimum 5.00 mm to Mximum 40.00 mm & Length: 6.00 mm to 50.00 mm |
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