EN 10216-1 P235TR2 seamless pipes and tubes are specified when the material needs additional inspection and verified impact performance. Steel number 1.0255, P235TR2 has a minimum yield strength of 235 MPa and tensile strength of 360 to 500 MPa. Compared with P235TR1, this grade is aluminium killed and comes with mandatory impact testing at 0°C along with specific inspection requirements. P235TR2 also replaced the former DIN 1630 St 37.4 designation. Amardeep Steel supplies P235TR2 seamless pipes and tubes with EN 10204 3.1 mill test certificates, while 3.2 inspection documentation is available on request. For the base grade, see our EN 10216-1 P235TR1 seamless pipes. For elevated temperature service, see EN 10216-2 P235GH tubes, or browse all carbon steel seamless pipes and tubes.
What Are P235TR2 Seamless Pipes and Tubes?
P235TR2 is the quality 2 version of P235 in EN 10216-1. The minimum 0.020% total aluminium makes it a fully killed, fine grain steel. Each lot is impact tested and supplied with specific inspection, so the certificate reports results from the tubes delivered.
What TR2 Adds Over TR1
- Aluminium, total: 0.020% minimum (not specified for TR1)
- Sulfur: 0.015% maximum (0.020% for TR1)
- Charpy V impact test at 0°C, mandatory
- Specific inspection and testing, with EN 10204 3.1 or 3.2
- Non-destructive testing options by agreement
EN 10216-1 P235TR2 Specifications
Parameter | Details |
|---|---|
Standard | EN 10216-1 (seamless non-alloy steel tubes for pressure purposes, room temperature properties) |
Grade | P235TR2 (1.0255) |
Type | Seamless, hot finished or cold finished |
Outside Diameter | About 10 mm to 508 mm OD, to EN 10220 series |
Wall Thickness | About 1.6 mm to 40 mm, depending on OD |
Delivery Condition | Normalised or normalising formed (+N); cold finished tubes are normalised after cold forming |
Inspection | Specific inspection and testing |
Length | Random and exact lengths |
Ends | Plain end, bevelled end on request |
Test Certificate | EN 10204 3.1, with 3.2 available on request |
P235TR2 Chemical Composition
Element | Content (%) |
|---|---|
Carbon (C) | 0.16 max |
Silicon (Si) | 0.35 max |
Manganese (Mn) | 1.20 max |
Phosphorus (P) | 0.025 max |
Sulfur (S) | 0.015 max |
Chromium (Cr) | 0.30 max |
Molybdenum (Mo) | 0.08 max |
Nickel (Ni) | 0.30 max |
Copper (Cu) | 0.30 max |
Aluminium, total (Al) | 0.020 min |
Niobium (Nb) | 0.010 max |
Titanium (Ti) | 0.040 max |
Vanadium (V) | 0.02 max |
Cr + Cu + Mo + Ni | 0.70 max |
P235TR2 Mechanical Properties
Property | Value |
|---|---|
Upper Yield Strength ReH, min (wall up to 16 mm) | 235 MPa |
ReH, min (wall over 16 to 40 mm) | 225 MPa |
ReH, min (wall over 40 to 60 mm) | 215 MPa |
Tensile Strength Rm | 360 to 500 MPa |
Elongation A, min (longitudinal / transverse) | 25% / 23% |
Impact Energy KV, min at 0°C | 40 J longitudinal, 28 J transverse |
Impact values are minimum averages of three Charpy V specimens. Confirm the test direction and temperature against the edition on your order.
Equivalent Grades of EN 10216-1 P235TR2 seamless pipes & tubes
Standard | Designation |
|---|---|
EN steel number | 1.0255 |
Former DIN 1630 | St 37.4 |
Closest ASTM | A106 Grade A, a close match, not identical |
Welded equivalent | EN 10217-1 P235TR2 |
Equivalent grades are close matches, not direct substitutes. For welded tube, see our EN 10217-1 welded steel tubes.
P235TR2 vs P265TR1 vs P265TR2
Property | P235TR2 | P265TR1 | P265TR2 | P265GH (EN 10216-2) |
|---|---|---|---|---|
Carbon, max | 0.16% | 0.20% | 0.20% | 0.20% |
Manganese, max | 1.20% | 1.40% | 1.40% | 1.40% |
Sulfur, max | 0.015% | 0.020% | 0.015% | 0.010% |
Aluminium | 0.020% min | Not specified | 0.020% min | 0.020% min |
ReH min (wall up to 16 mm) | 235 MPa | 265 MPa | 265 MPa | 265 MPa |
Rm | 360 to 500 MPa | 410 to 570 MPa | 410 to 570 MPa | 410 to 570 MPa |
Impact test | 40 J at 0°C (long.) | Not required | 40 J at 0°C (long.) | Required |
Inspection | Specific | Non-specific allowed | Specific | Specific |
Design temperature | Room temperature | Room temperature | Room temperature | Elevated temperature |
Values per EN 10216-1 and EN 10216-2. TR grades and GH grades share yield levels but are not interchangeable: GH grades have specified elevated temperature properties. Confirm values against the edition on your order.
If impact testing is not needed, EN 10216-1 P235TR1 seamless pipes cost less. For more strength, see EN 10216-1 P265TR2 seamless pipes.
EN 10216-1 P235TR2 seamless pipes & tubes Size and Weight Chart
OD (mm) | 2.0 mm | 2.6 mm | 3.2 mm | 4.0 mm | 5.0 mm | 6.3 mm |
|---|---|---|---|---|---|---|
21.3 | 0.95 | 1.20 | 1.43 | 1.71 | n/a | n/a |
26.9 | 1.23 | 1.56 | 1.87 | 2.26 | n/a | n/a |
33.7 | 1.56 | 1.99 | 2.41 | 2.93 | 3.54 | 4.26 |
42.4 | 1.99 | 2.55 | 3.09 | 3.79 | 4.61 | 5.61 |
48.3 | 2.28 | 2.93 | 3.56 | 4.37 | 5.34 | 6.53 |
60.3 | n/a | 3.70 | 4.51 | 5.55 | 6.82 | 8.39 |
76.1 | n/a | 4.71 | 5.75 | 7.11 | 8.77 | 10.84 |
88.9 | n/a | 5.53 | 6.76 | 8.38 | 10.35 | 12.83 |
114.3 | n/a | 7.16 | 8.77 | 10.88 | 13.48 | 16.78 |
139.7 | n/a | 8.79 | 10.77 | 13.39 | 16.61 | 20.73 |
168.3 | n/a | 10.62 | 13.03 | 16.21 | 20.14 | 25.17 |
219.1 | n/a | 13.88 | 17.04 | 21.22 | 26.40 | 33.06 |
Weights in kg/m, worked out as (OD minus wall) x wall x 0.02466, for steel at 7.85 g/cm³. Outside diameters follow EN 10220 series 1. Other ODs and walls are made to order.
Applications of P235TR2 Seamless Pipes and Tubes
- Water, air and gas pressure lines
- Compressed air and pneumatic systems
- Mechanical and structural pressure parts
- Pressure equipment to PED where impact values are required
- Outdoor process and utility lines in cold climates
- Hydraulic and fire protection systems
Testing and Documentation
Every order of P235TR2 seamless tube goes through the checks below at our testing facility or approved third party labs.
- Ladle chemical analysis
- Tensile test
- Flattening or ring expanding test
- Leak tightness test: hydrostatic or electromagnetic
- Charpy V impact test at 0°C
- Non-destructive testing for imperfections by agreement
- Visual and dimensional inspection
Mill test certificates are issued to EN 10204 3.1, with 3.2 available on request. You can view our approvals on the certificates page.
Packing and Marking
Each tube is marked with EN 10216-1, P235TR2, size, heat number and manufacturer name. Tubes are varnished or oiled against rust, ends capped on request, and packed in hexagonal bundles with steel strapping. Read more about our packing and despatch process.
Request a Quote for EN 10216-1 P235TR2 Seamless Pipes & Tubes
Send us the OD, wall thickness, impact direction, inspection document (3.1 or 3.2), length and quantity of your required P235TR2 pipe, and our team will reply with price and delivery. Use the enquiry form or reach us through the contact page.
Frequently Asked Questions
What is P235TR2?
P235TR2 (1.0255) is the quality 2 version of P235 in EN 10216-1: an aluminium killed non-alloy steel for seamless pressure tubes, with 235 MPa minimum yield, mandatory impact testing and specific inspection.
What is the difference between P235TR1 and P235TR2?
P235TR2 adds a minimum aluminium content, a lower sulfur limit, a mandatory Charpy impact test at 0°C and specific inspection.
What is the tensile strength of P235TR2?
EN 10216-1 sets 360 to 500 MPa tensile strength for P235TR2.
What is the old DIN equivalent of P235TR2?
P235TR2 replaced St 37.4 from DIN 1630.
