Specified mechanical properties at room temperature
P195 / P235 / P265 strength levels
TR1 and TR2 quality grades
TR2 grades include specified impact properties
Cold-drawn and cold-rolled tube capability
Grade-specific chemical and mechanical properties
Leak-tightness and NDT according to applicable requirements
EN 10204 inspection documentation available as specified
EN 10216-1 specifies technical delivery conditions for seamless tubes of circular cross-section made from non-alloy quality steel with specified properties at room temperature.
Specified Standard Edition: EN 10216-1:2013
Standard Title: Seamless Steel Tubes for Pressure Purposes — Technical Delivery Conditions — Part 1: Non-Alloy Steel Tubes with Specified Room Temperature Properties
EN 10216-1 should be distinguished from EN 10216-2, which covers non-alloy and alloy steel tubes with specified elevated-temperature properties.
EN 10216-1 contains six principal steel designations:
| Strength Level | TR1 Grade | Material Number | TR2 Grade | Material Number |
|---|---|---|---|---|
| P195 | P195TR1 | 1.0107 | P195TR2 | 1.0108 |
| P235 | P235TR1 | 1.0254 | P235TR2 | 1.0255 |
| P265 | P265TR1 | 1.0258 | P265TR2 | 1.0259 |
The complete TR1 or TR2 designation should be specified during purchasing because the two quality levels have different technical and inspection requirements.
TR1 and TR2 are quality designations within EN 10216-1.
| Quality Designation | Description |
|---|---|
| TR1 | Covers the standard room-temperature mechanical-property requirements for the applicable P195, P235 or P265 grade |
| TR2 | Includes additional quality requirements, including specified impact properties and tighter chemical-composition requirements for certain elements |
For applications requiring defined impact performance or more extensive inspection, the appropriate TR2 grade should be specified by the purchaser.
TR1 and TR2 should not be treated simply as interchangeable versions of the same material.
Chemical composition depends on the selected strength level and TR quality.
| Element | P195TR1 / P195TR2 | P235TR1 / P235TR2 | P265TR1 / P265TR2 |
|---|---|---|---|
| Carbon (C) | ≤0.13% | ≤0.16% | ≤0.20% |
| Silicon (Si) | ≤0.35% | ≤0.35% | ≤0.40% |
| Manganese (Mn) | ≤0.70% | ≤1.20% | ≤1.40% |
| Phosphorus (P) | ≤0.025% | ≤0.025% | ≤0.025% |
Sulfur and additional elemental requirements depend on TR1 or TR2 quality.
The complete grade designation should therefore be used for material certification and purchasing.
T = Wall Thickness. All strength values are in MPa.
| Grade | T ≤16 mm | 16 < T ≤40 mm | 40 < T ≤60 mm |
|---|---|---|---|
| P195TR1 / P195TR2 | 195 | 185 | 175 |
| P235TR1 / P235TR2 | 235 | 225 | 215 |
| P265TR1 / P265TR2 | 265 | 255 | 245 |
| Grade | Tensile Strength | Minimum Longitudinal Elongation | Minimum Transverse Elongation |
|---|---|---|---|
| P195TR1 / P195TR2 | 320–440 MPa | 27% | 25% |
| P235TR1 / P235TR2 | 360–500 MPa | 25% | 23% |
| P265TR1 / P265TR2 | 410–570 MPa | 21% | 19% |
For wall thicknesses above the ranges covered by the standard property tables, applicable properties should be confirmed according to the purchase specification.
TR2 grades have specified impact-energy requirements.
| Specimen Orientation | Test Temperature | Minimum Average Absorbed Energy |
|---|---|---|
| Longitudinal | 0°C | 40 J |
| Transverse | 0°C | 27 J |
Additional longitudinal impact testing at −10°C, with a minimum average absorbed energy of 28 J, can be specified where the applicable standard option is invoked.
TR1 grades do not carry the same specified impact-property requirements.
EN 10216-1 tubes are supplied in the applicable delivery condition defined by the standard and manufacturing route.
For cold-finished seamless tubes, the final delivery condition should be confirmed according to the selected grade, tube dimensions and ordered requirements.
Any additional heat-treatment or delivery-condition requirement should be stated at the enquiry and order stage.
Inspection and testing depend on the selected TR1 or TR2 grade and purchase specification.
Applicable requirements can include:
Additional inspection or testing options should be stated during the RFQ stage.
Pressure tubes are subject to the applicable leak-tightness requirements of EN 10216-1.
Project specifications can also require nondestructive examination according to the applicable standard provisions.
FYN can review requirements for:
The required method and acceptance criteria should be confirmed in the purchase specification.
These two standards cover different material-property requirements.
| Comparison | EN 10216-1 | EN 10216-2 |
|---|---|---|
| Material | Non-alloy steel | Non-alloy and alloy steel |
| Specified Properties | Room-temperature properties | Elevated-temperature properties |
| Typical Grades | P195TR1 / P195TR2 / P235TR1 / P235TR2 / P265TR1 / P265TR2 | P235GH / P265GH / 16Mo3 / 13CrMo4-5 / 10CrMo9-10 |
For elevated-temperature boiler, steam or high-temperature pressure applications, EN 10216-2 may be the appropriate material standard rather than EN 10216-1.
Final material selection should follow the applicable design code and project specification.
| Parameter | Capability |
|---|---|
| Grades | P195TR1 / P195TR2 / P235TR1 / P235TR2 / P265TR1 / P265TR2 |
| Manufacturing | Cold Drawn / Cold Rolled |
| Outside Diameter | 6–114 mm |
| Wall Thickness | 0.8–25 mm |
| Length | Up to 40 m |
| Delivery Condition | According to Grade / Manufacturing Route / Purchase Specification |
| Inspection | According to Grade / Quality Level / Purchase Specification |
| Testing Capability | Hydrostatic / UT / ET as specified |
| Documentation | EN 10204 / MTC / TPI as required |
| Third-Party Inspection | Available upon request |
| Custom Sizes | Subject to grade and technical review |
| MOQ | According to grade, size and production requirements |
EN 10216-1 standard requirements and FYN manufacturing capability are stated separately.
Actual grade and size availability is confirmed according to the required grade, dimensions, quantity, delivery condition and inspection requirements.
EN 10216-1 seamless steel tubes are used in pressure equipment where specified room-temperature properties are required.
For pressure-containing equipment and components where the applicable P195, P235 or P265 TR grade is specified.
For industrial pressure piping carrying liquids, gases or process media within the material and design conditions established by the applicable piping code.
For pressure-containing tube systems in chemical plants, process facilities and general industrial equipment.
For manufacturers and fabricators requiring seamless non-alloy steel tubing with defined room-temperature mechanical properties.
For maintenance and replacement projects where the existing equipment specification identifies an EN 10216-1 grade.
EN 10216-1 should not be selected solely on operating pressure. Material suitability must be evaluated together with design temperature, pressure, service medium, corrosion conditions and the applicable equipment design code.
Available documentation can include:
The required inspection document type should be stated during the RFQ stage.
Typical export packing includes:
Long-length tubes may require special packing and transportation arrangements.
Production lead time depends on grade, dimensions, quantity, delivery condition and inspection requirements.
For quotation, please specify:
EN 10216-1 + Complete TR1/TR2 Grade + OD × Wall Thickness × Length + Quantity
The complete grade designation should be stated, for example P235TR1 or P235TR2.
| Required Information | Details |
|---|---|
| Standard | EN 10216-1 |
| Grade | Complete designation, including TR1 / TR2 |
| Outside Diameter | Required outside diameter |
| Wall Thickness | Required wall thickness |
| Length | Required tube length |
| Quantity | Required order quantity |
| Dimensional Tolerances | If specifically required |
| Delivery Condition | If specified |
| Testing | Leak-tightness / NDT requirements |
| Inspection Certificate | Required EN 10204 document type |
| Third-Party Inspection | If required |
| Surface & Ends | Surface or end requirements, if applicable |
| Delivery | Delivery destination |
For project enquiries, send your tube list, technical specification or drawing for technical review.
For an accurate quotation, please send your required complete TR1/TR2 grade, outside diameter, wall thickness, length and quantity.
Example:
EN 10216-1 P235TR2 — 38 × 3.2 × 6000 mm — 2,000 pcs
For pressure-equipment projects, please also provide the applicable design specification, inspection certificate requirement and NDT requirements.
