TS EN 10051

TS EN 10051 is the standard for dimensional and shape tolerances of continuously hot-rolled, uncoated flat steel products. It applies to strip and plate/sheet cut from wide strip made of non-alloy and alloy steels, with a maximum width of 2 200 mm; it also covers hot-rolled strip intended for cold rolling. In practice, this kind of tolerance standard defines the geometric accuracy of the product, not just its steel grade or chemical composition.

What dimensional and shape tolerances mean

In hot-rolled steel, properties such as thickness, width, flatness, edge condition and waviness can affect downstream processing. Dimensional tolerances describe the permitted deviation from the nominal size, while shape tolerances address how the product behaves geometrically across its length and width. That distinction matters because later operations such as cutting, welding, forming and surface preparation depend on predictable flat products. The scope here is limited to uncoated material, meaning products delivered without a metallic or organic coating after hot rolling.

Where this standard is used and what it covers

• Continuously hot-rolled strip and plate/sheet made from non-alloy and alloy steels
• Products with a maximum width of 2 200 mm
• Relevant steel types including the stainless steels listed in Table 1
• Plate/sheet cut from wide strip
• Hot-rolled strip supplied for subsequent cold rolling

From a general technical perspective, standards of this type help align producer and user expectations for acceptance, processing and fit-for-purpose use. The main focus of TS EN 10051 is geometric conformance rather than chemical or strength classification, so its role is to control size and shape accuracy for flat products that will often move on to further fabrication steps. That makes it especially relevant where consistent handling and downstream formability are important.