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).

1. Chemical Composition Requirements

Ni	Cr	Mo	Fe	C	Si	Co	Mn	P	S
Remainder	≤1.0	26.0~30.0	≤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
ksi	MPa	ksi	MPa	min. %
110	760	51	350	40

*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).