ASTM B423-03 pdf free.Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy (UNS N08825 and N08221)* Seamless Pipe and Tube. This specification2covers nickel-iron-chromium-molybdenum-copper alloys (UNS N08825 and N08221)inthe form of cold-worked and hotfinished seamless pipe andtube intended for general corrosive service....