Is 10Cr9Mo1VNb equivalent to the American standard vessel plate SA387GR91CL2?

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I. Characteristics of 10Cr9Mo1VNb: It not only possesses high oxidation resistance and resistance to corrosion by high-temperature steam, but also exhibits good impact toughness, as well as high and stable ductility and heat strength. When used at temperatures below 620°C, its service stress is higher than that of austenitic stainless steel. Above 550°C, the recommended design stress is approximately twice that of T9 and 2.25Cr-1Mo steels. II. Standards for 10Cr9Mo1VNb: ASTM A213, ASTM A335
III. Chemical composition of 10Cr9Mo1VNb:
Grade | C | Mn | Si | Cr | Mo | S | P | Nb | V | Al
0.05–0.15 | 0.30–0.60 | 0.5 (max) | 1.9–2.6 | 0.87–1.13 | 0.025 | 0.025
P92 | 0.07–0.13 | 0.3–0.60 | 0.5 (max) | 8.5–9.5 | 0.30–0.60 | 0.01 | 0.020 | 0.04–0.09 | 0.15 | 0.25 | 0.04
P91 | 0.08–0.12 | 0.3–0.60 | 0.2–0.58 | 8.0–9.5 | 0.85–1.05 | 0.01 | 0.020 | 0.06–0.10 | 0.18–0.25 | 0.04
IV. Mechanical properties of 10Cr9Mo1VNb:
Tensile strength ≥ 585 (MPa)
Yield strength ≥ 415 (MPa)
Elongation ≥ 20 (%)
V. Applications of 10Cr9Mo1VNb: It can be used as steel tubes for high-temperature superheaters and reheaters in subcritical and supercritical boilers with wall temperatures up to 625°C, as well as for high-temperature header tubes and steam pipes with wall temperatures up to 600°C. It is also suitable for use in nuclear power heat exchangers and furnace tubes in petroleum cracking units. 10Cr9Mo1VNb is a chromium-molybdenum alloy steel according to national standards. It possesses resistance to hydrogen embrittlement, hydrogen corrosion, hydrogen exfoliation, and sulfide corrosion in hydrogen-containing environments at medium temperatures (350 – 480 °C). It also exhibits good resistance to low-temperature embrittlement, and is widely used in the manufacturing of equipment for the fertilizer, petrochemical, and thermal power industries, such as ammonia synthesis reactors, gasification furnaces, shift converters, and hydrogenation reactors. 10Cr9Mo1VNb is equivalent to the American standard vessel steel grades T91/P91/SA387GR91