EN 10216-2 Seamless Steel Tubes For Pressure Purposes
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The DIN EN 10216-2 standard specifies the requirements for seamless non-alloy and alloy steel tubes for specified elevated temperature conditions. Primarily used in the construction of pressure equipment such as boilers, heat exchangers, and pipelines.
EN 10216-2 falls under the broader EN 10216 series, which covers seamless steel tubes intended for use in pressurized systems. The “-2” part of the standard refers to a specific section for carbon and carbon-manganese steel tubes, designed for use in high-temperature conditions
EN 10216-2 Materials Grade
EN 10216-2 pipes are manufactured using carbon steel or carbon-manganese steel, which are materials with good strength and heat resistance. Common materials under this standard include:
- P235GH: A general-purpose grade of carbon steel for high-temperature service.
- P265GH: Another common grade for medium to high-pressure applications.
- P295GH: For high-temperature, high-pressure situations
- 16Mo3,It is used for high-temperature applications, especially in environments where resistance to thermal cycling and corrosion is required.
- 13CrMo4-5,Offers excellent resistance to oxidation and corrosion at high temperatures. It is used in critical pressure equipment, particularly where higher resistance to creep is required.
- 10CRMO9-10 ,Chrome-manganese, perlitic creep resistant structural steelfor high temperature applications up to 580 ℃
EN 10216-2 Chemical Composition:
| Steel grade | C | Si | Mn | P | S |
Cr | Mo | Ni | Altot | Cu | Ti max | |
| Steel name | Steel number | max | max | |||||||||
| P195GH | 1.0348 | =0.13 | =0.35 | =0.70 | 0.025 | 0.020 | =0.30 | =0.08 | =0.30 | =0.020 | =0.30 | 0.040 |
| P235GH | 1.0345 | =0.16 | =0.35 | =1.20 | 0.025 | 0.020 | =0.30 | =0.08 | =0.30 | =0.020 | =0.30 | 0.040 |
| P265GH | 1.0425 | =0.20 | =0.40 | =1.40 | 0.025 | 0.020 | =0.30 | =0.08 | =0.30 | =0.020 | =0.30 | 0.040 |
| 16Mo3 | 1.5415 | 0.12-0.20 | 0.40-0.90 | 0.40-0.90 | 0.025 | 0.020 | =0.30 | 0.25-0.35 | =0.30 | =0.040 | =0.30 | |
| 14MoV6-3 | 1.7715 | 0.10-0.15 | 0.15-0.35 | 0.40-0.70 | 0.025 | 0.020 | 0.30-0.60 | 0.40-0.50 | =0.30 | =0.040 | =0.30 | |
| 13CrMo4-5 | 1.7335 | 0.10-0.17 | =0.15 | 0.40-0.70 | 0.025 | 0.020 | 0.70-1.15 | 0.40-0.60 | =0.30 | =0.040 | =0.30 | |
| 10CrMo9-10 | 1.7380 | 0.08-0.14 | 0.08-0.14 | 0.30-0.70 | 0.025 | 0.020 | 2.00-2.50 | 0.90-1.10 | =0.30 | =0.040 | =0.30 | |
| 25CrMo4 | 1.7218 | 0.22-0.29 | 0.22-0.29 | 0.60-0.90 | 0.025 | 0.020 | 0.90-1.20 | 0.15-0.30 | =0.30 | =0.040 | =0.30 | |
| 15NiCuMoNb5-6-4 | 1.6368 | =0.17 | =0.17 | 0.80-1.20 | 0.025 | 0.020 | =0.30 | 0.25-0.50 | 1.00-1.30 | =0.050 | 0.50-0.80 | |
| X10CrMoVNb9-1 | 1.4903 | 0.08-0.12 | 0.08-0.12 | 0.30-0.60 | 0.025 | 0.020 | 8.00-9.50 | 0.85-1.05 | =0.40 | =0.040 | =0.30 | |
| a Elements not included in this Table shall not be intentionally added to the steel without the agreement of the purchaser, except for elemnents which may be added for finishing the cast. All appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steel making process | ||||||||||||
| b This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements which shall be reported. When using titanium, the producer shall verify that (Al+Ti/2)=0,020% | ||||||||||||
| c Option 2: In order to facilitate subsequent forming operations, an agreed maximum copper content lower than indicated and an agreed specified maximum tin content shall apply | ||||||||||||
| d The content of these elements need not to be reported unless intentionally added to the cast | ||||||||||||
| e For wall thickness=30 mm the carbon content may be increased by 0.02% for cast and product analysis | ||||||||||||
| f The upper carbon value of 0,23 % shall not be exceeded for product analysis | ||||||||||||
EN 10216-2 Mechanical Property:
| Steel grade | Tensile properties at room temperature | Impact properties a b | |||||||||||
| Steel name | Steel Number | Upper yield strength or proof strength ReH or Rp0.2 for Wall Thickness T Min. | Tensile
Strength Rm |
Elongation A min. % a |
Minimum average absorbed energy KV J at a temperature of ℃ | ||||||||
| T≤16 | 160<T≤40 | 40<T≤60 | 60<T≤100 | l | t | l |
t |
||||||
| MPa | MPa | MPa | MPa | MPa | 20 | 0 | -10 | 20 | 0 | ||||
| P195GH | 1.0348 | 195 | 320-440 | 27 | 25 | 40 c | 28 d | 27c | |||||
| P235GH | 1.0345 | 235 | 225 | 215 | 360-500 | 25 | 23 | 40 c | 28 d | 27c | |||
| P265GH | 1.0425 | 265 | 255 | 245 | 410-570 | 23 | 21 | 40 c | 2s d | 27C | |||
| 16Mo3 | 1.5415 | 280 | 270 | 260 | 450-600 | 22 | 20 | 40 c | 27 c | ||||
| 14MoV6-3 | 1.7715 | 320 | 320 | 310 | 460-610 | 20 | 18 | 40 c f | 27 c | ||||
| 13CrMo4-5 | 1.7335 | 290 | 290 | 280 | 440-590 | 22 | 20 | 40 c | 27 c | ||||
| 10CrMo9-10 | 1.7380 | 280 | 280 | 270 | 480-630 | 22 | 20 | 40 c | 27 c | ||||
| 25CrMo4 | 1.7218 | 345 | 345 | 345 | 540-690 | 18 | 15 | 40 c f | 27 c | ||||
| 15NiCuMoNb5-6-4 | 1.6368 | 440 | 440 | 440 | 440e | 610-780 | 19 | 17 | 40 c f | 27 c | |||
| X10CrMoVNb9-1 | 1.4903 | 450 | 450 | 450 | 450 | 630-830 | 19 | 17 | 40 c f | 27 c | |||
| a I = longitudinal t = transverse | |||||||||||||
| b To be verified when options 4 and/or 5 are/is specified, unless footnote f) applies | |||||||||||||
| c Option 4: Impact energy shall be verified. | |||||||||||||
| d Option 5: Longitudinal impact energy shall be verified. | |||||||||||||
| e For wall thickness 60 mm< T =80mm | |||||||||||||
| f Impact test mandatory for wall thickness T =16mm | |||||||||||||
EN 10216-2 boiler tube Heat Treatment:
| Steel grade | Heat treatment a | Austenizing | Tempering | |||
| Steel name | Steel number | Temperature °C | Cooling Medium | Temperature °C | Cooling medium | |
| P195GH | 1.0348 | +N b | 880 to 940 | Air | – | – |
| P235GH | 1.0345 | +N b | 880 to 940 | Air | – | – |
| P265GH | 1.0425 | +N b | 880 to 940 | Air | – | – |
| 16Mo3 | 1.5415 | +N b | 890 to 950 | Air | – | – |
| 14MoV6-3 | 1.7715 | +NT b c | 930 to 990 | Air | 680 to730 | air |
| 13CrMo4-5 | 1.7335 | +NT b c | 900 to 960 | Air | 660 to 730 | air |
| 10CrMo9-10 | 1.738 | +NT b c | 900 to 960 | Air | 680 to 750 | air |
| 25CrMo4 | 1.7218 | +QT | 860 to 900 | Air or Liquid | 620 to 680 | air |
| 15NiCuMoNb5-6-4 | 1.6368 | +NT c | 880 to 980 | Air | 580 to 680 | air |
| X10CrMoVNb9-1 | 1.4903 | +NT c | 1040 to 1090 | air | 730 to 780 | air |
| a +N = Normalising, +NT = Normalising + Tempering, +QT = Quenching + Tempering (air or liquid), +I = Isothermal Annealing. | ||||||
| b Normalising includes Normalising Forming. | ||||||
| c For these steel grades it may be necessary in the case of wall thickness T above 25 mm or T/D >0,15 to apply quenching and tempering in order to achieve the intended structure and material properties. The decision shall be left to the discretion of the manufacturer but shall be stated to the customer at the time of enquiry and order. Steel tubes treated in such a way shall be designated by the steel name supplemented by the symbol +QT. | ||||||
Applications
EN 10216-2 pipes are primarily used in:
- Pressure vessels: To handle high-pressure fluids.
- Boiler tubes: For steam boilers, where heat and pressure are involved.
- Heat exchangers: To transfer heat between fluids without mixing them.
- Piping systems in industries like power generation, petrochemical plants, and chemical industries.
Standards and Marking
EN 10216-2 pipes must be clearly marked to show they comply with the standard. The marking includes:
- Manufacturer’s mark.
- Steel grade.
- Pipe size and specification.
- Heat number (for traceability).
