ASTM B622 PDF

Hastelloy B2 Seamless Pipe and Tube. These alloys are classified into different grades according to chemical composition. Thus Seamless pipes or tubes can withstand higher amounts of mechanical stress, pressure, higher temperature and resist wide range of corrosive environments. These steel bars are introduced to different types of rolling mills, where these bars are rolled into a uniform round shaped solid billet. These solid round billets are later heated and then pushed or pulled over piercing rods thereby producing a hollow tube or pipe or shell.

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Tool holder: 5 degree neg. Speed: sfm, 0. Dry2, oil3, or water-base coolant4. Speed: 90 sfm depending on rigidity of set up, 0. Dry, oil, or water-base coolant.

Tool holder: 5 degree pos. Dry or water-base coolant. If brazed tool bar, grind 0 degree back rake, 10 degree pos. Speed: 70 sfm depending on the rigidity of setup, 0. Dry, oil or water-base coolant. Finish Boring C-2 or C-3 grade: Use standard positive rake tools on insert type bars.

Grind brazed tools as for finish turning and facing except back rake may be best at 0 degrees. Water-base coolant. A water-base coolant mist may also be effective.

A viscosity at degrees F from 50 to SSU. Dilute with water to make mix. Water-base coolant may cause chipping and rapid failure of carbide tools in interrupted cuts. Use positive axial and radial rake, 45 degree corner angle, 10 degree relief angle.

Speed: sfm. Feed: 0. Oil or waterbase coolants will reduce thermal shock damage of carbide cutter teeth. End Milling Not recommended , but C-2 grades may be successful on good setups. Use positive rake. Feed: Same as high speed steel. Oil or water-base coolants will reduce thermal shock damage. Drilling C-2 grade not recommended, but tipped drills may be successful on rigid setup if no great depth. The web must thinned to reduce thrust. Use degree included angle on point.

Gun drill can be used. Speed: 50 sfm. Oil or water-base coolant. Coolant-feed carbide tipped drills may be economical in some setups. Reaming C-2 or C-3 grade: Tipped reamers recommended, solid carbide reamers require vary good setup.

Tool geometry same as high speed steel. Tapping Not recommended, machine threads, or roll-form them. Others may be added and should be equally suitable. A viscosity at degree F from 50 to SSU. Table 18 Plasma Arc Cutting Our alloys can be cut using any conventional plasma arc cutting system. The best arc quality is achieved using a mixture of argon and hydrogen gases. Nitrogen gas can be substituted for hydrogen gases, but the cut quality will deteriorate slightly.

Shop air or any oxygen bearing gases should be avoided when plasma cutting these alloys.

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