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Nickel Alloy Seamless Tube Specification – ASTM B444

Overview:

This specification covers UNS N06625 and UNS N06852 nickel-chromium-molybdenum-columbium alloys and UNS N06219 nickel-chromium-molybdenum-silicon alloy seamless pipe and tube that has been cold-worked. Chemical testing shall be performed on each type of material and shall conform to the chemical composition limits specified for carbon, manganese, silicon, phosphorus, sulfur, chromium, tantalum, columbium, cobalt, molybdenum, iron, aluminum, titanium, copper, and nickel. The material shall undergo tensile testing and shall conform to the required room temperature tensile properties like tensile strength, yield strength, and elongation depending on the heat treatment used and including small diameter and light-walled tubing. Each pipe or tube must endure hydrostatic testing and nondestructive electric tests, and will adhere to the allowable fiber stress.

  • ¬†For the entire specification and current updates, please contact ASTM.

 

 

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