What is ISO 10149-2:2015?

ISO 10149-2:2015 is a standard that specifies the requirements for hot-rolled flat products made of high yield strength steels for cold forming. This technical article aims to provide an easy-to-understand explanation of this standard.

Scope and Application

The scope of ISO 10149-2:2015 covers hot-rolled flat products with a minimum yield strength of 355 MPa. These steels are intended for use in cold-formed components or structures, such as automotive parts, tubes, profiles, and other general engineering purposes.

This standard applies to flat products with thicknesses ranging from 1.5 mm to 20 mm. It provides guidelines for chemical composition, mechanical properties, tolerances, dimensions, and delivery conditions for these high yield strength steels.

Chemical Composition and Mechanical Properties

ISO 10149-2:2015 specifies the levels of carbon, manganese, phosphorus, sulfur, silicon, and other elements in the steel composition. These elements play a crucial role in determining the material's mechanical properties, including yield strength, tensile strength, elongation, and impact toughness.

The standard also defines various categories of steel grades based on their chemical composition and mechanical properties. These categories enable producers and consumers to select the most suitable steel grade for their specific applications.

Tolerances, Dimensions, and Delivery Conditions

In addition to specifying the chemical composition and mechanical properties, ISO 10149-2:2015 sets tolerances for dimensions, shapes, flatness, and surface quality of the hot-rolled flat products. It also provides guidelines for marking, bundling, and labeling the products for proper identification and handling during transportation and storage.

The delivery conditions, such as rolled or normalized, are also specified in this standard. These conditions ensure that the products are supplied in the appropriate state for cold forming processes, such as bending, stamping, and deep drawing, without compromising their performance.

Overall, ISO 10149-2:2015 plays a vital role in ensuring the quality, reliability, and compatibility of high yield strength steels for cold forming applications. Compliance with this standard helps manufacturers and users of these products to achieve consistent and predictable results in their respective industries.