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ASTM B622 UNS N10665 (Hastelloy B2) Seamless Pipe and Tube

Hastelloy B2 seamless pipe or tube refers to the nickel-molybdenum alloy pipe or tube manufactured to ASTM B622 UNS N10665. The pipe or tube shall be supplied in solution annealed and descaled condition. It shall be furnished with plain ends cut and deburred. Usually, at least one of the non-destructive methods shall be taken to ensure the quality: magnetic particle inspection(MPI), eddy current test(ET), ultrasonic examination(UT).

Hastelloy B-2 seamless pipe, made to ASTM B622 UNS N10665

Hastelloy B-2 seamless pipe, made to ASTM B622 UNS N10665, 19mm x 2mm x 3.5m.

1. Chemical Composition Requirements

NiCrMoFeCSiCoMnPS
Remainder≤1.026.0~30.0≤2.0≤0.02≤0.10≤1.0≤1.0≤0.04≤0.03
*All values are in weight percent.

2. Mechanical Properties of ASTM B622 UNS N10665

Tensile Strength, min.Yield Strength, min.Elongation
ksiMPaksiMPamin. %
1107605135040
*The density of UNS N10665 pipe or tube is 0.333 lb/in3 or 9.22 g/cm3.
*Yield strength shall be tested on the basis of 0.2% offset; the specimen’s diameter for elongation test shall be 2 inch(50.8 mm).

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