本发明公开了一种超大规格高性能钼合金板材，所述钼合金成分按重量百分比为包括：Ti0 .40～0 .55％ ，Zr 0 .06～0 .12％ ，C 0 .05～0 .12％，Hf 0 .8～1 .2％，余量为Mo，以及其他不可避免的杂质；还提供一种超大规格高性能钼合金板材的制备方法，依次包括：钼合金粉末制备，压制成形，高温烧结，轧制变形加工，退火热处理工序。所述大规格高性能钼合金板材在室温下的抗拉强度Ra≥1000MPa、断后伸长率A≥10％ ，1000℃抗拉强度Ra≥500MPa、断后伸长率A≥20％；规格如下：厚度≥5mm，宽幅≥1500mm，长度≥2000mm，单重≥500kg。

The invention discloses an oversized high-performance tantalum alloy sheet, the components of which include: Ti0.40 to 0.55%, Zr0.06 to 0.12%, C0.05 to 0.12% by weight. Hf0.8 to 1.2%, with a margin of Mo, and other unavoidable impurities, also provides an oversized high-performance tantalum alloy plate preparation method, including: vanadium alloy powder preparation, pressing forming, high temperature sintering, rolling deformation processing, annealing heat treatment process. The large-size high-performance tantalum alloy sheet at room temperature tensile strength Ra≥1000MPa, after the break elongation rate A ≥ 10%, 1000 degrees C tensile strength Ra≥500MPa After the break elongation rate of A ≥ 20%, specifications are as follows: thickness ≥ 5mm, wide ≥ 1500mm, length ≥ 2000mm, single weight ≥ 500kg.