| 摘要 |
The present invention concerns a method of preparing a sintered product having a tensile strength 750 MPa comprising the steps of compacting a wateratomised, annealed iron-based powder comprising, by weight %, Cr 2.5-3.5, Mo 0.3-0.7, Mn 0.09-0.3, O < 0.2, C < 0.01 the balance being iron and, an amount of not more than 1 %, inevitable impurities, at a pressure of at least 600 MPa and subjecting the compacted body to sintering at a temperature of at most 1220 ~C. The invention also concerns the annealed powder used in the method as well as the sintered products.
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