牌号 | Carpenter 15-15LC® Modified Stainless |
厂家 | Carpenter Technology Corporation |
分类 | Steel |
介绍 | 15-15LC® Modified stainless is an austenitic, nitrogen-strengthened stainless steel. It should be considered for oil and gas industry applications such as nonmagnetic drill collars, stabilizers, and MWD housings. The lower carbon content of 15-15LC Modified stainless results in less tendency for carbides to precipitate in grain boundaries compared with normal chrome-manganese stainless grades. This provides 15-15LC Modified stainless with improved resistance to intergranular stress- corrosion cracking. In addition, nickel, chromium, nitrogen, manganese and molybdenum are controlled to further enhance the resistance to intergranular stress-corrosion cracking. A post-machining ID compressive stress treatment for drill collars has been developed to further improve the resistance to stress-corrosion cracking. The strength of 15-15LC Modified stainless is achieved by warm working on a rotary forge at a temperature below the recrystallization temperature. |
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