Crucible Industries LLC. 416R
1) Good machinability for gun drilling and reaming, plus excellent polish ability for uniform lapping, necessary for bore accuracy.
2) A homogeneous microstructure which responds to heat treat providing a uniform hardness along the length of the bar, necessary for accurate button rifling to precise groove dimensions.
3) An optimum combination of high tensile strength along with adequate toughness to withstand the typical chamber pressures encountered during firing.
4) Good corrosion resistance to inhibit rusting and which also helps to minimize fouling. Crucible 416R provides a durable finish which does not pit when properly maintained.
5) Precision straightened and stress relieved bars, either mill length or mult length, ready to be cut to length and gun drilled.
6) 100% ultrasonic testing for reliable barrels.
Crucible 416R stainless steel is manufactured using very stringent controls from initial melting, through hot rolling, heat treating, cold finishing and final bar inspection. Barrels made from Crucible 416R are used at all levels of competition and in all conditions dry, damp or salty. Although all martensitic stainless steels have reduced ductility at very low temperatures, Crucible 416R can be safely used down to minus 40°F (-40°C).
For more than 25 years, Crucible 416R, produced in Syracuse, NY, has been the choice of custom barrelmakers and champion shooters.
General Properties
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Technical Datasheet (English)
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