IS 11946:1987

In this competitive scenario, it isn't easy to survive in the market without a standard quality and certified product. BIS license may also be required to sell products in the Indian market.

To get BIS certification and produce a standard quality product, the manufacturer must ensure that their product must follow the specified Indian standard.

Let’s take a closer look at IS 11946:1987 for Soft Magnetic Iron strips.

This standard specifies the requirements for cold-rolled soft magnetic iron strips used primarily for electromagnetic applications like relay yoke, armature, and the like in electrical machinery and apparatus.

The standard requires that all general requirements for the supply of cold-rolled soft magnetic iron strips be met. Strips may be supplied in coils or straight lengths, subject to mutual agreement between the purchaser and the manufacturer.

The chemical composition of the material shall be as per standard. The material must be uniform in composition and micro and macrostructure, sound and free from physical defects or flaws both externally and internally. The strips as received must be smooth and flat, with no waviness, bow, bend, or buckle. The material in the coil must be uniformly treated, with uniform hardness and characteristics, so that it uncoils free from waviness.


Tests shall be carried out in accordance with the standard.

  • Tensile test
  • Bend test
  • Grain size


Each strip must be treated on both sides with a non-hardening rust-preventive oil that is easily washable with an aqueous alkali solution. Each bundle or package of strips or tag attached to each coil must bear the manufacturer's name and trade mark, quality/grade, product dimension, cast or identification mark, net and gross weight, and the dispatch date. The standard mark (ISI Mark) may also be applied to the material.

The Manufacturer 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.

ALSO READ: BIS QCO for the Steel and Steel Products (Soft Magnetic Iron Strips)

isi mark


For Detailed Information about the Procedure for BIS ISI Certification


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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