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Rifles, Reloading, Optics, Equipment
Gunsmithing
Making a new recoil lug
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<blockquote data-quote="Trickymissfit" data-source="post: 1304715" data-attributes="member: 25383"><p>even better than 17PH4 SS steel is MAR10 from Baldwin Steel in PA. Very similar to 17ph4 in the alloy make up, but delivered in a prehard state. Usually right at 30RC. A much tougher steel than 17ph4. The down side is that it's not cheap, and really not what you want to machine in a typical Bridgeport mill. On the plus side, it will not rust! Not even in a deionized water soak. </p><p></p><p>On the otherhand if it were be, I'd make mine out of generic 4150 pretreat steel, and then have it electroless nickled. After being plated, I'd simply grind it flat & parallel. An issue I've found with the 17ph4 is that the basic metal is hard to machine perfectly flat. I found it was far better to wire the shape out of a block that was ground flat and parallel. Same issue with MAR10 by the way. But with a wire EDM it doesn't change.</p><p></p><p>gary</p></blockquote><p></p>
[QUOTE="Trickymissfit, post: 1304715, member: 25383"] even better than 17PH4 SS steel is MAR10 from Baldwin Steel in PA. Very similar to 17ph4 in the alloy make up, but delivered in a prehard state. Usually right at 30RC. A much tougher steel than 17ph4. The down side is that it's not cheap, and really not what you want to machine in a typical Bridgeport mill. On the plus side, it will not rust! Not even in a deionized water soak. On the otherhand if it were be, I'd make mine out of generic 4150 pretreat steel, and then have it electroless nickled. After being plated, I'd simply grind it flat & parallel. An issue I've found with the 17ph4 is that the basic metal is hard to machine perfectly flat. I found it was far better to wire the shape out of a block that was ground flat and parallel. Same issue with MAR10 by the way. But with a wire EDM it doesn't change. gary [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Gunsmithing
Making a new recoil lug
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