The tensile strength of Hastelloy C-276 (UNS N10276) is temperature dependent: as the temperature elevated, its tensile strength gradually decreases. The ASME BPVC Section II Part D has prescribed a series of tensile strengths of Hastelloy C-276 materials at elevated temperatures which are listed in below table.

*Temp.	-20~100	200	300	400	500	600	650
*T.S	100.0	100.0	100.0	97.7	95.7	93.9	93.1
*Temp.	700	750	800	850	900	950	1000
*T.S	92.4	91.7	90.9	90.2	89.4	88.5	87.6

*Temp.: metal temperature, °F, not exceeding; *T.S: tensile strength, ksi.
*The tabulated values are applicable to ASTM B366 Gr. N10276 seamless or welded fittings, ASTM B462 & B564 Gr. N10276 forgings, ASTM B574 Gr. N10276 rods, ASTM B575 Gr. N10276 plates, sheets, strips, ASTM B619 Gr. N10276 welded pipes, ASTM B622 Gr. N10276 seamless pipes & tubes, ASTM B626 Gr. N10276 welded tubes.
*All materials shall be solution annealed.