There are miscellaneous piping materials made from Monel 400 (UNS N04400, 67Ni-30Cu). These materials can be used in boiler or pressure vessel applications according to relative ASME Boil & Pressure Vessel Code(BPVC).

1. Monel 400 Products for Boiler & Pressure Vessel Applications

Product Forms	Standards
Plate	ASTM B127, ASME SB127,
Bar, Rod	ASTM B164, ASME SB164
Seamless Pipe & Tube	ASTM B163, ASME SB163, ASTM B165, ASME SB165
Seamless & Welded Fittings	ASTM B366, ASME SB366
Forging	ASTM B564, ASME SB564

*The Monel 400 bar & rod shall be furnished in annealed or hot-worked condition.
2. The plate shall be furnished in annealed or as-rolled condition.
3. The seamless pipe & tube, seamless & welded fittings shall be annealed or stress-relieving condition.

2. Applicability and Max. Temperature Limits

According to ASME BPVC Section II Part D, Monel 400 is not applicable to the construction of power boilers(ASME BPVC Section I). It is mainly used for construction of nuclear facility components(ASME BPVC Section III), construction of pressure vessels(ASME BPVC Section VIII, Division 1), and transport tanks(ASME BPVC Section XII). The max. temperature limits are listed in below table.

Maximum Temperature Limits, °F
ASME BPVC III	ASME BPVC VIII-1	ASME BPVC XII
800	900	650

*Seamless & welded Monel 400 fittings are not permitted to be used in applications of ASME BPVC Section III.