BIS CERTIFICATION FOR STEEL FOR INTERNAL COMBUSTION ENGINES VALVES
IS 7494:1981

This standard specifies the requirements for wrought alloy and unalloyed steel bars up to and including 40 mm in diameter intended for the manufacture of internal combustion engine valves.

General requirements for material supply must be in accordance with the specified standard. Unless otherwise specified in the order, the processes used to manufacture the steel are at the discretion of the manufacturer. The material must be free of potentially harmful internal and surface flaws. Steel shall be supplied in any heat treatment or surface machining condition agreed upon between the purchaser and the manufacturer. The chemical composition must adhere to the standards specified.

Tests

Tests shall be carried out in accordance with the specified standard.

• Dimensional tolerances
• Elevated temperature properties
• Chemical composition
• Hardness
• Inclusion rating
• Tensile test

Packing & Marking:

Packing and marking must be done in accordance with IS 7494:1981. Steel bars must be properly bundled. Each bundle must have a metal tag with the following information attached:

• Name and trademark of the manufacturer,
• Steel grade, and
• Cast number or any other identification mark.

The Standard Mark (ISI Mark) may also be applied to the material. Manufacturers must obtain a BIS license from the Bureau of Indian Standards to use a standard mark (ISI Mark). The Bureau grants a license based on a successful assessment of manufacturing infrastructure, production process, and quality control and testing capabilities during a visit to its manufacturing premises.

NOTE:

For Detailed Information about the Procedure for BIS ISI Certification

Conclusion:

If a product falls under the scope of the BIS Conformity Assessment Scheme, All the manufacturers, importers, and foreign entities must obtain BIS ISI Certification. The Bureau may cancel the License if the product fails to meet certification requirements.

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