Unalloyed, heat-resistant steel for pressure vessels. Good weldability.
Properties suitable for good cold and hot-rolling.
Standard
EN10028-2
Identification Number
1.0425
Classification
–
Type
Alloyed/Unalloyed
Rolling State
Normalised
Brief Description
Unalloyed, heat-resistant steel for pressure vessels. Good weldability.
Properties suitable for good cold and hot-rolling.
Applications
Pressure vessels, pipes, boilers containing hot liquids, and heat exchangers.
Standard Coil Stock Range
| P265GH | 1500 | 2000 |
|---|---|---|
| 3 | ● | ● |
| 4 | ● | ● |
| 5 | ● | ● |
| 6 | ● | ● |
| 7 | ● | |
| 8 | ● | ● |
| 10 | ● | ● |
| 12 | ● | ● |
Chemical Composition
Regulatory standard
| Element | Value |
| C (%) | ≤ 0,20 |
| Si (%) | ≤ 0,40 |
| Mn (%) | 0,80-1,40 |
| P (%) | ≤ 0,025 |
| S (%) | ≤ 0,010 |
| AI (%) | ≥ 0,020 |
| Nb (%) | ≤ 0,030 |
| Ti (%) | ≤ 0,03 |
| V (%) | ≤ 0,02 |
| Mo (%) | 0,08 |
| Cu (%) | ≤ 0,30 |
| Element | Value |
| Cr (%) | ≤ 0,30 |
| Ni (%) | ≤ 0,30 |
| N (%) | ≤ 0,012 |
| B (%) | |
| Nb+Ti+V (%) | |
| Cr+Mo+Ni (%) | |
| Ni+Cr+Cu+Mo (%) | ≤ 0,70 |
| C.E.V. (%) |
C.E.V. (%) = C+(Mn/6)+[(Cr+Mo+V)/5]+[(Ni+Cu)/15]
Mechanical Properties
According to UNI EN 10028
| Mechanical characteristics | Direction | Thicknesses | Values |
| Re (MPa) | T | ≤ 16 | ≥ 265 |
| > 16 ≤ 40 | ≥ 255 | ||
| Rm(MPa) | T | < 16 | 410-530 |
| > 16 ≤ 40 | 410-530 | ||
| A80 (%) | T | ≥ 18 | |
| A5 (%) | T | ≥ 22 | |
| Bend Test 180° | |||
| KV 20°C (J) | T | ≥ 40* | |
| KV 0°C (J) | T | ≥ 34* | |
| KV -20°C (J) | T | ≥ 27* | |
| KV -40°C (J) | |||
| KV -50°C (J) |
* = Standard option
t = thickness in mm of the test piece for the bend test
ADW1 certification upon requestL = Tensile testing carried out on longitudinal test pieces
T = Bend tests carried out on cross-cut test pieces
Tolerances
Tolerances on the dimensions and on the shape UNI EN 10051
Surface condition UNI EN 10163-2
Certifications
EN 10204-3.1 PED/ 97/23/EC AD2000W1
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