12Cr2Mo1V (GB/T 3077) is a chromium-molybdenum-vanadium alloy designed for high-temperature pressure vessels, with a precise chemistry: 0.08–0.15% C, 2.00–2.50% Cr, 0.90–1.10% Mo, 0.25–0.35% V.
This composition provides exceptional creep resistance (resistance to slow deformation) at 540–570°C, critical for boiler tubes and steam pipes in coal-fired power plants. Its mechanical properties include 540–735 MPa tensile strength, ≥310 MPa yield strength, and 18% elongation-maintaining integrity under sustained high pressure and temperature. 12Cr2Mo1V is equivalent to ASTM A387 Grade 22 and DIN 1.7709, with Chinese production focused on power generation infrastructure.