1. Monel 400 Group 1: Allowable Stress – Temperature Table

Metal Temperature, °F	-20~100	200	300	400	500	600
Max. Allowable Stress, ksi	16.7	14.6	13.6	13.2	13.1	13.1
Metal Temperature, °F	650	700	750	800	850	900
Max. Allowable Stress, ksi	13.1	13.0	12.9	12.7	11.0	8.0

*Group 1 refers to Monel 400 bar, seamless pipe & tube (＞5″ in OD), and forging of annealed condition.
*Metal temperature shall be interpreted as “not exceeding”.

2. Monel 400 Group 2: Allowable Stress – Temperature Table

Metal Temperature, °F	-20~100	200	300	400	500	600
Max. Allowable Stress, ksi	18.7	16.4	15.2	14.7	14.7	14.7
Metal Temperature, °F	650	700	750	800	850	900
Max. Allowable Stress, ksi	14.7	14.6	14.5	14.3	11.0	8.0

*Group 2 refers to Monel 400 plate, seamless tube(≤3″), seamless pipe & tube(≤5″), seamless & welded fittings of annealed condition.
*Metal temperature shall be interpreted as “not exceeding”.

3. Monel 400 Group 3: Allowable Stress – Temperature Table

Metal Temperature, °F	-20~100	200	300	400	500	600
Max. Allowable Stress, ksi	20.0	19.4	18.6	17.9	17.6	17.3
Metal Temperature, °F	650	700	750	800	850	900
Max. Allowable Stress, ksi	17.2	17.0	16.8	14.5	8.5	4.0

*Group 3 refers to Monel 400 hot-worked bars(ASME SB164) with hexagonal section(54mm ~102mm).
*Metal temperature shall be interpreted as “not exceeding”.

4. Monel 400 Group 4: Allowable Stress – Temperature Table

Metal Temperature, °F	-20~100	200	300	400	500	600
Max. Allowable Stress, ksi	21.4	21.4	21.4	21.4	21.4	21.4
Metal Temperature, °F	650	700	750	800	850	900
Max. Allowable Stress, ksi	21.4	20.7	18.5	14.5	8.5	4.0

*Group 4 refers to Monel 400 as-rolled plate and hot-worked bar or rod with round, square or rectangle section(305mm~356mm).
*Metal temperature shall be interpreted as “not exceeding”.

5. Monel 400 Group 5: Allowable Stress – Temperature Table

Metal Temperature, °F	-20~100	200	300	400	500	600
Max. Allowable Stress, ksi	22.9	22.9	22.9	22.9	22.9	22.9
Metal Temperature, °F	650	700	750	800	850	900
Max. Allowable Stress, ksi	22.8	22.0	18.5	14.5	8.5	4.0

*Group 5 refers to Monel 400 hot worked bars with round, square or rectangle section ≤305mm, or with hexagonal section ≤54mm.
*Metal temperature shall be interpreted as “not exceeding”.

6. Monel 400 Group 6: Allowable Stress – Temperature Table

Metal Temperature, °F	-20~100	200	300	400	500
Max. Allowable Stress, ksi	24.3	24.3	24.3	24.3	24.3
Metal Temperature, °F	600	650	700	750	800
Max. Allowable Stress, ksi	23.9	23.5	22.8	18.0	12.7

*Group 6 refers to Monel 400 seamless tube(ASME SB163), seamless pipe & tube(ASME SB165) funished in stress-relieving condition.
*Metal temperature shall be interpreted as “not exceeding”.

All tabulated values above are based on ASME Boiler & Pressure Vessel Code Section II, Part D.