900C

900C, typically written as 900 °C or 900 C, denotes a temperature of 900 degrees Celsius. This is equivalent to 1,652 degrees Fahrenheit and 1,173.15 kelvin. The Celsius scale places 0 °C at the freezing point and 100 °C at the boiling point of water under standard conditions.

In materials science and engineering, 900 °C is a common reference point for high-temperature processes. In steel and other alloys, many heat-treatment cycles use temperatures near 900 °C to alter microstructure; for example, austenitizing temperatures for a range of carbon steels lie in this region, followed by controlled cooling to achieve desired hardness and toughness. Ceramic and powder-processed materials may be heat-treated or sintered at temperatures around 900 °C or higher, depending on composition.

At such temperatures, diffusion rates increase, oxidation becomes more rapid in air, and mechanical properties can change significantly. The exact effects depend on material composition, atmosphere, and time held at temperature. Equipment and conditions must be chosen accordingly, with protective atmospheres or coatings used to control oxidation and contamination.

Applications and practical notes: 900 °C is relevant in various industries, including metalworking, heat treatment, and ceramics. Handling at this temperature requires appropriate furnaces or kilns rated for high temperatures, along with safety measures and monitoring to ensure process control. The term 900C serves as a guideline for process conditions rather than a fixed material property.