Name: ISO 5951:2013 — Hot-rolled steel sheet of higher yield strength with improved formability
SKU: ISO 5951:2013
Price: 25 EUR
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Abstract

Overview

ISO 5951:2013 specifies requirements for hot-rolled steel sheet of higher yield strength with improved formability. The standard covers killed, fine-grain hot-rolled sheet containing microalloying elements (for example niobium, vanadium or titanium) to deliver improved formability, weldability and toughness compared with normal high-yield steels. Typical product forms are coils and cut lengths (commonly 1 mm to 6 mm thickness and widths ≥ 600 mm). ISO 5951:2013 is intended for parts that need better formability while retaining higher strength, enabling mass savings and improved weld performance.

Key topics and technical requirements

Scope and exclusions
- Applies to hot-rolled sheets with microalloying for improved formability.
- Excludes steels for boilers/pressure vessels, commercial/drawing quality (ISO 3573), weathering steels, and lower-yield steels covered by ISO 4995/4996.
Chemical composition
- Heat analysis limits (examples): C ≤ 0.15%, Mn ≤ 1.65%, P ≤ 0.025%, S ≤ 0.030%.
- Mandatory presence of one or more microalloying elements (Nb, V, Ti) to achieve required properties.
- Limits on additional elements (Cu, Ni, Cr, Mo) and product analysis tolerances are specified.
Mechanical properties
- Defined grade series (e.g., HSF325 to HSF560) with yield-strength levels from ~325 MPa up to ~560 MPa and corresponding tensile strength and elongation requirements.
- Yield strength may be measured by 0.5% proof stress or 0.2% offset where appropriate.
Testing and sampling
- Tensile testing per ISO 6892-1; sampling rules (one tensile sample per lot, lot ≤ 50 t).
- Optional impact testing (ISO 148-1) may be agreed for thicker material.
Manufacture, surface and delivery
- Steelmaking and processing left to manufacturer unless agreed; surface supplied as rolled or pickled/descaled and normally oiled for protection.
- Dimensional and shape tolerances referenced to ISO 16160 (and ISO 20805 for heavier thickness/coils).
Weldability
- Product is normally weldable when appropriate welding procedures are used; descaling may be needed for some methods.

Applications

Fabrication of formed components where a balance of higher yield strength and improved formability is required.
Useful for applications seeking weight reduction, increased performance and better weldability while maintaining manufacturability (e.g., cold-formed structural parts and stamped components).
Supplied mainly in the delivered condition for further forming, joining and finishing.

Who uses this standard

Steel producers and mill product specifiers
OEM engineers and procurement teams (automotive, appliances, fabricated metalwork)
Sheet metal fabricators, stampers and weld engineers
Testing laboratories and quality assurance personnel

Related standards

ISO 6892-1 (tensile testing), ISO 148-1 (Charpy impact), ISO 16160 (dimensional/shape tolerances), ISO 20805 (coils/heavy thickness).

ISO 5951:2013

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Applications

Who uses this standard

Related standards

Технические детали

ISO 3573:2012

Hot-rolled carbon steel sheet of commercial and drawing qualities

ISO 6892-1:2019

Metallic materials — Tensile testing — Part 1: Method of test at room temperature

ISO 14817-2:2015

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BS ISO 16160:2012

Hot-rolled steel sheet products. Dimensional and shape tolerances.

ISO 20805:2017

Hot-rolled steel sheet in coils of higher yield strength with improved formability and heavy thickness for co…