This standard outlines the specifications for plain carbon and alloy tool and die steel, available in various forms such as bars, blanks, rings, and other shapes. These materials are capable of being hardened and tempered, suitable for use in both cold and hot working applications.

Steel governed by this standard must be ordered and supplied based on either (a) chemical composition or (b) chemical composition and annealed hardness. Unless specified otherwise in the order, the methods employed for manufacturing the steel and the final product are at the discretion of the manufacturer, provided that the steel is fully killed.

Each ingot must have sufficient reductions and discards to ensure that it is free of piping, harmful segregation, and other defects. The material must be roughly machined, chipped, or ground to remove any surface imperfections that may cause defects in the finished products. The material must be free of potentially harmful surface defects such as seams, laps, and cracks. The material must also be free of flaws. Surface decarburization must be completely avoided in all materials supplied in machined and ground conditions.

TESTS

The subsequent test must be conducted for Tool and Die Steels.

• Chemical composition

• Hardness

• Dimensional tolerances

• Ultrasonic test

• Additional test

MARKING:

Each bar exceeding 50 mm in diameter or equivalent cross-sectional area must be stamped or appropriately marked at the end with the following details: manufacturer's source and cast number. Additionally, the Standard Mark may be applied to the material. Manufacturers are required to obtain a BIS license from the Bureau of Indian Standards to utilize the standard mark (ISI Mark). This license is granted following a comprehensive evaluation of manufacturing infrastructure, production processes, and quality control and testing capabilities during an inspection at the manufacturing premises by the Bureau.

PROCESS FOR BIS ISI MARK CERTIFICATION