Seamless tubes manufactured to ASTM B163 UNS N08825 (Incoloy Alloy 825) are primarily used for condenser and heat-exchanger service. They are applicable for piping systems designed according to ASME BPVC Section III Class 3 or ASME BPVC Section VIII Division 1 with maximum applicable temperature 800°F or 1000°F, respectively. They are also applicable for transport tanks of ASME BPVC Section XII with maximum applicable temperature 650°F.

Max. Allowable Stress Values at Different Temperatures

*Temp. °F	-20~100	200	300	400	500	600	650
*A	23.3	21.4	20.3	19.4	18.5	17.8	17.5
*B	23.3	23.3	23.3	23.3	23.3	23.3	23.3
*Temp. °F	700	750	800	850	900	950	1000
*A	17.3	17.2	17.0	17.0	16.9	16.8	16.5
*B	23.3	23.2	23.0	22.9	22.8	22.6	22.3

*Temp.: metal temperature, not exceeding.
*A: standard ASTM B163 UNS N08825 seamless tubes, annealed.
*B: ASTM B163 UNS N08825 seamless tubes, annealed; slightly greater deformation caused by stresses is acceptable.