Q125
Cr-Mo Steel usually used in the hardened, quenched and tempered condition.
Low alloy steel typically containing 0.3% Carbon and alloyed with up to 1.5% Chromium and 0.85% Molybdenum to give enhanced mechanical properties.
Grade is typically used in a variety of down hole tools, casing, tubulars and accessories that requires good hardenability and excellent impact properties.
Impact toughness is generally good to temperatures as low as -46 Deg C with typically 27J average and 20J single achieved, this is limited though dependent on a number of factors such as ruling section, chemical composition and heat treatment condition, with impact toughness achieved decreasing with higher strength, ruling section and at lower test temperatures due to the materials
Ductile / Brittle transition temperature.
