EN 10216-2 is a standard for seamless steel tubes used in specific high-temperature applications, such as seamless boiler tube and power plant tube. It covers the following steel grades: P195GH, P235GH, P265GH, 16Mo3, 14MoV6-3, 13CrMo4-5, and 10CrMo9-10, including both non-alloy and alloy steels. EN 10216-2 specifies the technical delivery conditions for seamless steel tubes with circular cross-sections in two test categories. EN 10216-2 seamless boiler tubes fully comply with PED 2014/68/EU and are the mainstream designated material standard for boiler projects and power plant EPC projects exported to the EU.
Outer diameter: 10.2mm-720mm;
Wall thickness: 1.2mm~12mm;
Length: 5-12m or as per customer requirements;
Steel grades: P195GH, P235GH, P265GH, 16Mo3, 14MoV6-3, 13CrMo4-5, 10CrMo9-10.
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Steel grades |
EN10216-2 CHEMICAL COMPOSITION (LADLE ANALYSIS) |
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C% max |
Si% max |
Mn% max |
P% max |
S% max |
Cr% max |
Mo% max |
Ni% max |
Al.cał% min |
Cu% max |
Nb% max |
Ti% max |
V% max |
Cr+ Cu+ Mo+ Ni% MAX |
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P195GH |
0.13 |
0.35 |
0.70 |
0.025 |
0.020 |
0.30 |
0.08 |
0.30 |
≥ 0.020 |
0.30 |
0.010 |
0.040 |
0.02 |
0.70 |
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P235GH |
0.16 |
0.35 |
1,20 |
0.025 |
0.020 |
0.30 |
0.08 |
0.30 |
≥ 0.020 |
0.30 |
0.010 |
0.040 |
0.02 |
0.70 |
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P265GH |
0.20 |
0.40 |
1,40 |
0.025 |
0.020 |
0.30 |
0.08 |
0.30 |
≥ 0.020 |
0.30 |
0.010 |
0.040 |
0.02 |
0.70 |
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16Mo3 |
0.12- 0.20 |
0.35 |
0.40- 0.70 |
0.025 |
0.020 |
0.30 |
0.25- 0.35 |
0.30 |
≥ 0.020 |
0.30 |
- |
- |
- |
- |
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14MoV6-3 |
0.10- 0.15 |
0.15- 0.35 |
0.40- 0.70 |
0.025 |
0.020 |
0.30- 0.60 |
0.50- 0.70 |
0.30 |
≥ 0.020 |
0.30 |
- |
0.22-0.28 |
- |
- |
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13CrMo4-5 |
0.15 |
0.50- 1,00 |
0.30- 0.60 |
0.025 |
0.020 |
1,00- 1,50 |
0.45- 0.65 |
0.30 |
≥ 0.020 |
0.30 |
- |
- |
- |
- |
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10CrMo9-10 |
0.10- 0.17 |
0.35 |
0.40- 0.70 |
0.025 |
0.020 |
0.70- 1,15 |
0.40- 0.60 |
0.30 |
≥ 0.020 |
0.30 |
- |
- |
- |
- |
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EN 10216-2 Mechanical properties |
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Steel grades |
Mechanical properties during tensile testing in room temperature |
Resilience |
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Upper yield limit or yield strength Re or R0.2 for wall thickness of t min |
Tensile strength Rm |
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Minimum energy average absorbed KVJ at the temperature of 0°C |
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T≤16 |
16 |
40 |
60 |
I |
T |
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MPa |
MPa |
MPa |
MPa |
MPa |
I |
t |
20 |
0 |
-10 |
20 |
0 |
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P195GH |
195 |
- |
- |
- |
320- 440 |
27 |
25 |
- |
40 |
28 |
- |
27 |
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P235GH |
235 |
225 |
215 |
- |
360- 500 |
25 |
23 |
- |
40 |
28 |
- |
27 |
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P265GH |
265 |
255 |
245 |
- |
410- 570 |
23 |
21 |
- |
40 |
28 |
- |
27 |
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16Mo3 |
280 |
270 |
260 |
- |
450- 600 |
22 |
20 |
40 |
- |
- |
27 |
- |
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14MoV6-3 |
320 |
320 |
310 |
- |
460- 610 |
20 |
18 |
40 |
- |
- |
27 |
- |
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13CrMo4-5 |
290 |
290 |
280 |
- |
440- 590 |
22 |
20 |
40 |
- |
- |
27 |
- |
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10CrMo9-10 |
280 |
280 |
270 |
- |
480- 630 |
22 |
20 |
40 |
- |
- |
27 |
- |
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EN 10216-2 Outside diameter and wall thickness tolerances |
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Outside diameter D mm |
Permissible deviations of outside diameter D |
Permissible deviations of wall thickness t depending on the T/D ratio |
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≤0.025 |
>0.025 |
>0.050 |
>0.10 |
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D≤219,1 |
+\- 1% or =\- 0.5mm depending on which is greater |
+\- 12,5% or 0.4 mm depending on which is greater |
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D>219,1 |
=\- 20% |
=\- 15% |
=\- 12,5% |
=\- 10% |
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For the outside diameter of D≥355,6 mm, local deviation outside of the upper deviation limit by further 5% of the wall thickness T is permitted |
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EN 10216-2 Inside diameter and wall thickness tolerances |
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Permissible deviations of inside diameter |
Permissible T deviations depending on the T/d ratio |
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d |
dmin |
<\-0.03 |
>0.03 |
>0.06 |
>0.12 |
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+\- 1% or +\- 2mm depending on which is greater |
+2% +4mm |
+\-20% |
+\-15% |
+\-12,5% |
+\-10% |
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For the outside diameter of D≥355,6 mm, local deviation outside of the upper deviation limit by further 5% of the wall thickness T is permitted |
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Steel Grade |
Steel Standard |
Steel Grade |
Steel Standard |
Steel Grade |
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P235GH |
DIN 17175 |
St 35.8 |
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P265GH |
DIN 17175 |
St 45.8 |
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16Mo3 |
DIN 17175 |
15Mo3 |
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10CrMo55 |
15Mo3 |
BS 3606 |
621 |
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13CrMo45 |
DIN 17175 |
BS 3606 |
620 |
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10CrMo910 |
DIN 17175 |
13CrMo44 |
BS 3606 |
622 |
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25CrMo4 |
10CrMo910 |
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P355N |
DIN 17179 |
StE 355 |
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P355NH |
DIN 17179 |
TStE 355 |
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P355NL1 |
DIN 17179 |
WStE 460 |
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P460N |
DIN 17179 |
TStE 460 |
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P460NH |
DIN 17179 |
WStE 460 |
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P460NL1 |
DIN 17179 |
TStE 460 |
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EN 10216-2 is a direct European equivalent to other well-known pressure tube standards:
Region: European Union
Process: Seamless
Service: Pressure, Elevated Temp
Common Grades: P235GH, P265GH, 16Mo3
Key Difference: Comprehensive elevated temp data, PED compliance.
Region: USA / International
Process: Seamless
Service: Pressure, Elevated Temp
Common Grades: Grade A, B, C
Key Difference: Focuses on room temp and basic elevated temp props. Specifically for ferritic alloy steels for high-temp.
Region: USA / International
Process: Seamless
Service: High-Temperature Service
Common Grades: P5, P9, P11, P22, P91
Key Difference: Specifically for ferritic alloy steels for high-temp.
Hot-rolled;
Cold-drawn;
Normalized or normalized + tempered (for TC2).
Plain end;
Bevel end;
Threaded connection (with socket or cap).
Hydrostatic test;
Eddy current test (ECT);
Ultrasonic test (UT);
Infrared or magnetic particle test (as per project requirements).
Rust-preventive oil;
Black paint / Color paint;
Anti-corrosion coating (temporary or export grade).
EN 10216-2 seamless boiler tubes are widely used in:
Thermal power plant boilers
Residual heat boilers (HRSG)
Superheater and reheater tubes
High-temperature steam transmission pipelines
High-temperature heat exchangers
These devices typically operate in high-temperature environments of 400–580°C for extended periods.
16Mo3 contains a suitable amount of molybdenum (Mo), which, compared to ordinary carbon steel:
More stable high-temperature strength
Better creep resistance
Stronger resistance to hydrogen corrosion
Therefore, it is very suitable for boiler piping systems operating at temperatures above 450°C for extended periods.
TC1: Basic inspection level
TC2: Enhanced inspection level (recommended)
TC2 requires: more stringent chemical and mechanical testing, impact testing, and a complete MTC 3.1 document. Most boiler and power plant EPC projects specify TC2.