EN 10025-1
EUROPEAN STEEL STANDARD
DELIVERY CONDITIONS
EN 10025-1: Technical Delivery Conditions for Hot Rolled Structural Steel Products – A Complete Guide
By PZVAR Technical Editorial Team
12 Min Read
12 Aug 2026
Table Of Contents
Key Takeaways
Defines technical delivery conditions for structural steel
Covers hot-rolled steel products for construction use
Specifies requirements for testing and product quality
Ensures conformity with EN 10025-1 requirements
EN 10025-1 is the first part of the EN 10025 European standard series and refers to hot rolled products of structural steels.
It defines the general technical delivery conditions applicable to the corresponding structural steel products within the scope of the EN 10025 series.
The standard is often quoted in structural steel materials specifications for such applications as:
• steel buildings,
• structural frames,
• bridges,
• industrial structures,
• platforms,
• towers,
• machinery structures,
• engineering structures,
• fabricated steel structures etc,
It shall not be treated as a specification for individual structural steel grades.
It contains the general requirements that combine with the other parts of the EN 10025 series.
The basic structure is as follows:
EN 10025-1 – General Technical Delivery Conditions,
EN 10025-2 – Non-alloy Structural Steels,
EN 10025-3 – Normalized/Normally Rollen Weldable Fine Grain Structural Steels,
EN 10025-4 – Thermomechanically Rollen Weldable Fine Grain Structural Steels,
EN 10025-5 – Structural Steels with Improved Atmospheric Corrosion Resistance,
EN 10025-6 – Quenched and Tempered High Yield Strength Structural Steels.
Thus, when defining a specific structural steel material, it is necessary to quote both the specific part of the EN 10025 series and the required steel grade and delivery condition.
EN 10025-1 defines general requirements for hot rolled flat and long products of structural steels.
These requirements may pertain to aspects like:
• Technical delivery conditions
• Nomenclature of steels
• Size of product
• Chemical composition
• Mechanical properties
• Conditions of delivery
• Inspection and testing
• Marking of products
• Surface quality
• Freedom from internal defects
• Tolerances
• Inspection documents
The specific requirements for the material depend on the part of the EN 10025 series used along with the required steel grade.
As an example, EN 10025-1 should always be considered along with EN 10025-2 in case of a non-alloy structural steel grade.
The EN 10025 family is divided into several parts.
| Standard | Main Subject |
|---|---|
| EN 10025-1 | General technical delivery conditions |
| EN 10025-2 | Technical delivery conditions for non-alloy structural steels |
| EN 10025-3 | Normalized/normalized rolled weldable fine grain structural steels |
| EN 10025-4 | Thermomechanically rolled weldable fine grain structural steels |
| EN 10025-5 | Structural steels with improved atmospheric corrosion resistance |
| EN 10025-6 | Quenched and tempered high yield strength structural steels |
This structure is important because EN 10025-1 alone does not define every steel grade or every mechanical property.
For example:
S355JR according to EN 10025-2 requires the requirements of EN 10025-2 together with the general requirements applicable from EN 10025-1.
Structural steel grades are indicated by names like:
• S235
• S275
• S355
• S420
• S460
Depending on the specific part of the EN 10025 family.
S stands for structural steel grade.
The number normally refers to the required minimum yield strength in the particular conditions.
Other symbols could indicate things like:
• Impact toughness
• Delivery condition
• Special requirements
E.g.
S355JR
includes designation data to differentiate the steel grade from other grades of S355.
The whole material name must always be based on the corresponding product standard and not the designation alone.
Chemical composition is a critical criterion in the specification of structural steel.
As per the steel grade being used and the appropriate part of EN 10025, criteria for the following chemical elements could be stated:
• Carbon
• Silicon
• Manganese
• Phosphorus
• Sulfur
• Nitrogen
• Copper
• Chromium
• Nickel
• Molybdenum
The allowable amounts vary according to the grade, thickness and delivery conditions of the material.
Chemical composition is relevant since it will affect:
• Strength
• Toughness
• Weldability
• Hardness
• Corrosion resistance
• Fabrication properties
The chemical composition on the material test report should hence be compared to the material standard.
The structural steel is supposed to have mechanical properties as per the required grade and delivery condition.
The mechanical properties are usually in form of:
Yield Strength
This is defined as the stress value at which the metal starts showing plastic deformation.
Tensile Strength
It is the highest value of tensile stress obtained from tensile testing.
Elongation
It is an indicator of ductility of the metal.
Impact Strength
If required, the impact testing gives the toughness of the metal as per the test conditions.
The values depend on:
• Grade of steel
• Thickness of product
• Temperature
• Delivery condition
• The relevant EN 10025 standard part
Hence, when reviewing the material certificate, one should do so as per the right grade and thickness category.
Delivery Conditions
The delivery condition represents the metallurgical condition under which the steel product is delivered.
This varies based on the respective EN 10025 standard part and grade. The delivery condition could be any of the following processes:
• As rolled
• Normalized
• Normalized Rolled
• Thermo mechanically Rolled
• Quenched and Tempered
The delivery condition will have a bearing on the material properties and its applicability.
Therefore, it should be indicated in the purchase specification.
Impact Testing and Toughness
Impact toughness is especially significant for structural purposes, where the material will be subjected to colder temperatures or where there are certain fracture toughness specifications.
Designations for EN 10025 grades may include impact testing specification.
Some examples are as follows:
• JR
• J0
• J2
These designations correspond to impact characteristics at certain test temperatures.
For instance, the impact test temperature corresponding to a certain designation cannot simply be assumed without consulting the relevant product standard.
The material certificate has to be consulted in order to verify:
Grade → Impact designation → Test temperature → Impact energy → Test result
This is especially relevant for structural steel that is subjected to certain harsh environments.
Material Identification and Traceability
Material traceability is an important consideration when EN 10025 steel is used in fabricated structures.
A typical traceability chain is:
Purchase Order → Steel Grade → Heat Number → Material Certificate → Product Marking → Fabricated Component
The heat number or other identification marking should allow the supplied product to be connected with its inspection documentation.
During fabrication, traceability should be maintained through activities such as:
- Material receipt
- Storage
- Cutting
- Forming
- Fit-up
- Welding
- Inspection
- Final fabrication
Loss of material identification can make it difficult to demonstrate that the correct steel grade was used.
Inspection Documents According to EN 10204
EN 10025 materials are commonly supplied with inspection documents specified according to EN 10204.
Depending on the purchase requirements, documents may include:
- Type 2.1
- Type 2.2
- Type 3.1
- Type 3.2
The applicable inspection document should be specified in the purchase order or technical requirements.
A Type 3.1 inspection certificate generally provides specific inspection results validated by the manufacturer’s authorized inspection representative independent of the manufacturing department.
A Type 3.2 inspection certificate involves the manufacturer’s authorized inspection representative together with an additional authorized inspection representative as specified by the applicable requirements.
The certificate should correspond to the actual material supplied, including its:
- Grade
- Heat number
- Dimensions
- Chemical composition
- Mechanical properties
- Delivery condition
- Required Testing
EN 10025-1 and Structural Steel Fabrication
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