Quality	Surface refinement
CR210LA	+EG, +GI, +GA, +AS, +ZM	Details
CR240LA	+EG, +GI, +GA, +AS, +ZM	Details
CR270LA	+EG, +GI, +GA, +AS, +ZM	Details
CR300LA	+EG, +GI, +GA, +AS, +ZM	Details
CR340LA	+EG, +GI, +GA, +AS, +ZM	Details
CR380LA	+EG, +GI, +GA, +AS, +ZM	Details
CR420LA	+EG, +GI, +GA, +AS, +ZM	Details
CR460LA	+EG, +GI, +GA, +AS, +ZM	Details
CR500LA	+EG, +GI, +GA, +AS, +ZM	Details
CR550LA	+EG, +GI, +GA, +AS, +ZM	Details

The recommendation of the German Association of the Automotive Industry (VDA) for flat steel products for cold forming is defined in material sheet VDA 239-100. This standard covers a variety of low-alloy and micro-alloy steels, including:

The high strength of these steels is achieved by selective alloying with niobium, titanium and vanadium. These elements can be added individually or in combination. Alternatively, carbon-manganese concepts with grain refinement are also used.

Thanks to their specific properties, low-alloy and micro-alloy steels are high-strength materials. Their designation is based on:

CR240LA-UC-U an example of designations according to VDA 239-100

CR240LA-UC-U an example of designations according to VDA 239-100

Processing and finishing

To improve edge elongation and bending properties, microalloyed steels can be specified as killed steels with grain refinement through controlled sulphide inclusions (abbreviation “LAS”). The targeted control of the shape and proportion of manganese sulphide inclusions is achieved by using calcium or rare earth metals such as cerium. This leads to small, globular particles that ensure optimum properties.

Typical areas of application

Further details, including mechanical and chemical properties of the materials in accordance with VDA 239-100, can be found in our Quality Guides (QG). You can download these via the corresponding link.

Contact us – we will be happy to advise you!