Difference between CRCA and HRCA
The metal is passed to many rollers to reduce the thickness and achieve the desired result. The metal has to be ductile, because hard and brittle metal is not suitable for rolling. Rolling can be done in room temperature or known as below crystallization level, this process is known as cold rolling process. When the metal is rolled above crystallization level, this process is known as hot rolling process.
CRCA means cold rolled close annealed, as said before that metal is rolled in temperature below recrystallization level, cold rolled are much harder and have smootherfinish than hot rolled metal.
HRCA means Hot rolled close annealed is rolled on temperature above crystallization level, this hot rolled metal is softer in nature and have rough finish. This makes hot rolled metal less desirable than cold rolled metal.
They also have very different uses in practical use, Cold rolled close annealed steel is used very precision is required like furniture, automotive industry and hot rolled close annealed steel is used when less precision is required.
Carbon content of both type of steel is different and this varies because of the different temperature used in both the process. The Cold rolled close annealed steeldoesn’t experience temperature change which is why there is no change in carbon content, hot rolled close annealed steel has higher temperature processing, this leads to increase carbon content.
The CRCA AND HRCA steel are also different cost wise, CRCA steel is costly because the metal retains all its properties, HRCA steel is relatively cost effective as it causes metal to lose some of its properties because of the higher temperature processing.
The CRCA steel and HRCA steel also vary in the thickness it can achieve. In CRCA you can roll metal into thin sheets of steel but in HRCA you cannot roll metal into very thin sheets.
We at JSWMI, steel processing center, have CRCA available in a wide range of thickness, width up to 1870mm and high tensile strengths for various applications in coil / slit, sheet and trap form
Material grades are mainly commercial, forming, drawing and structural type with customized properties having TS up to 980 Mpa
We also have HRCA available in wide range of HR thickness and strengths for various applications
Material grades are mainly commercial, forming, drawing and structural type with customized properties.