A533

A533 is a designation that can refer to several different things, most commonly a specific type of steel plate. Steel plate grade A533 is a quenched and tempered, medium-carbon, nickel-molybdenum alloy steel. It is primarily used in the construction of nuclear reactor pressure vessels. This material is known for its excellent toughness and strength at elevated temperatures, as well as its resistance to radiation embrittlement. A533 steel is manufactured in several grades, with Grade B being the most common for pressure vessel applications.

Another notable use of the designation A533 is within the realm of road numbering. The A533 is a major road in the United Kingdom. It is a primary route in Northern England, running from the A59 near York to the A19 near Sunderland. The road passes through towns such as Ripon and Durham. It serves as an important artery for both local and long-distance traffic, connecting various communities and facilitating economic activity in the region. The A533 has undergone several upgrades and diversions throughout its history to improve traffic flow and safety.