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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
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<blockquote data-quote="John Klingenberg" data-source="post: 1801180" data-attributes="member: 107749"><p>I love working with titanium in lots of projects. The idea that it's hard on tooling can be exaggerated. Inserts for tooling are expensive no matter what's it's made of and get replaced a lot for precise work. Old inserts get relegated to rough cut use. In my opinion you replace carbide and tungsten bits for harder steel just as often. You just have to use the "right" coated tooling that's made for TI. It cuts smooth and the finish work is easy. One thing TI does do, if you have any backlash or slop in your machinery it shows on the finish. TI is also what's called a memory metal. Any stretching or distortion, it wants to go back to its original shape when not under pressure or shape. In the aircraft industry there are time limits from when a tube is bent, such as hydraulic lines, to when it needs to be installed and put under pressure. The bends get out of spec if it sits too long. A little stretching isn't going to be noticed in the shooting world, it's just not that precise of an operation with all the other variables involved. TI does gall when in contact with carbon and chromium metals. When you torque a barrel into an action it should be done as little as possible. If you burn through barrels or just like to change things up a lot TI is not the way to go. Steel bolts usually made of 4140 or 4150 steels are not a good match to be in rubbing contact with TI. Any roughness on the lugs, grit, unburnt powder, brass flakes really tear up the lug butts. Headspace happens because of this wear, not because the TI is soft but because of the metallurgical disparity. It has a place in firearms but I would limit it to a hunting rifle and not something I'm putting several hundred to thousands of rounds through. If you shoot casually I think it's a fine material.</p></blockquote><p></p>
[QUOTE="John Klingenberg, post: 1801180, member: 107749"] I love working with titanium in lots of projects. The idea that it's hard on tooling can be exaggerated. Inserts for tooling are expensive no matter what's it's made of and get replaced a lot for precise work. Old inserts get relegated to rough cut use. In my opinion you replace carbide and tungsten bits for harder steel just as often. You just have to use the "right" coated tooling that's made for TI. It cuts smooth and the finish work is easy. One thing TI does do, if you have any backlash or slop in your machinery it shows on the finish. TI is also what's called a memory metal. Any stretching or distortion, it wants to go back to its original shape when not under pressure or shape. In the aircraft industry there are time limits from when a tube is bent, such as hydraulic lines, to when it needs to be installed and put under pressure. The bends get out of spec if it sits too long. A little stretching isn't going to be noticed in the shooting world, it's just not that precise of an operation with all the other variables involved. TI does gall when in contact with carbon and chromium metals. When you torque a barrel into an action it should be done as little as possible. If you burn through barrels or just like to change things up a lot TI is not the way to go. Steel bolts usually made of 4140 or 4150 steels are not a good match to be in rubbing contact with TI. Any roughness on the lugs, grit, unburnt powder, brass flakes really tear up the lug butts. Headspace happens because of this wear, not because the TI is soft but because of the metallurgical disparity. It has a place in firearms but I would limit it to a hunting rifle and not something I'm putting several hundred to thousands of rounds through. If you shoot casually I think it's a fine material. [/QUOTE]
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