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EN 10216-2, seamless boiler tubes, seamless steel tubes

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EN 10216-2, seamless boiler tubes, seamless steel tubes
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EN 10216-2 Seamless Boiler Tube

Date:2026-01-05View:36Tags:EN 10216-2, seamless boiler tubes, seamless steel tubes

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.


Dimensions of EN 10216-2

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.


EN 10216-2 Chemical Composition

Steel grades

EN10216-2 CHEMICAL COMPOSITION (LADLE ANALYSIS)

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

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

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

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

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

-

-

-

-

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

-

-

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

-

-

-

-

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

-

-

-

-


EN 10216-2 Mechanical Property

EN 10216-2 Mechanical properties

Steel grades

Mechanical properties during tensile testing in room temperature

Resilience

Upper yield limit or yield strength Re or R0.2 for wall thickness of t min

Tensile strength Rm


Elongation A min%

Minimum energy average absorbed KVJ at the temperature of 0°C

T≤16

16

40

60

I

T

MPa

MPa

MPa

MPa

MPa

I

t

20

0

-10

20

0

P195GH

195

-

-

-

320- 440

27

25

-

40

28

-

27

P235GH

235

225

215

-

360- 500

25

23

-

40

28

-

27

P265GH

265

255

245

-

410- 570

23

21

-

40

28

-

27

16Mo3

280

270

260

-

450- 600

22

20

40

-

-

27

-

14MoV6-3

320

320

310

-

460- 610

20

18

40

-

-

27

-

13CrMo4-5

290

290

280

-

440- 590

22

20

40

-

-

27

-

10CrMo9-10

280

280

270

-

480- 630

22

20

40

-

-

27

-


EN10216-2 Seamless Boiler Tube: Dimensional Tolerances

EN 10216-2 Outside diameter and wall thickness tolerances

Outside diameter D mm

Permissible deviations of outside diameter D

Permissible deviations of wall thickness t depending on the T/D ratio

≤0.025

>0.025
≤0.050

>0.050
≤0.10

>0.10

D≤219,1

+\- 1% or =\- 0.5mm depending on which is greater

+\- 12,5% or 0.4 mm depending on which is greater

D>219,1

=\- 20%

=\- 15%

=\- 12,5%

=\- 10%

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


EN 10216-2 Inside diameter and wall thickness tolerances

Permissible deviations of inside diameter

Permissible T deviations depending on the T/d ratio

d

dmin

<\-0.03

>0.03
≤0.06

>0.06
≤0.12

>0.12

+\- 1% or +\- 2mm depending on which is greater

+2% +4mm
depending on which is greater

+\-20%

+\-15%

+\-12,5%

+\-10%

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


EN 10216-2 Equivalent Steel Standard

Steel Grade

Steel Standard

Steel Grade

Steel Standard

Steel Grade

P235GH

DIN 17175

St 35.8

P265GH

DIN 17175

St 45.8

16Mo3

DIN 17175

15Mo3

10CrMo55

15Mo3

BS 3606

621

13CrMo45

DIN 17175

BS 3606

620

10CrMo910

DIN 17175

13CrMo44

BS 3606

622

25CrMo4

10CrMo910

P355N

DIN 17179

StE 355

P355NH

DIN 17179

TStE 355

P355NL1

DIN 17179

WStE 460

P460N

DIN 17179

TStE 460

P460NH

DIN 17179

WStE 460

P460NL1

DIN 17179

TStE 460

 


EN 10216-2 VS. ASTM A106 VS. ASTM A335

EN 10216-2 is a direct European equivalent to other well-known pressure tube standards:

1. EN 10216-2

Region: European Union

Process: Seamless

Service: Pressure, Elevated Temp

Common Grades: P235GH, P265GH, 16Mo3

Key Difference: Comprehensive elevated temp data, PED compliance.


2. ASTM A106

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.


3. ASTM A335

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.


EN 10216-2 Seamless Boiler Tube


Delivery Condition & Processing Capabilities

1. Delivery Condition

Hot-rolled;

Cold-drawn;

Normalized or normalized + tempered (for TC2).


2. End Finishing

Plain end;

Bevel end;

Threaded connection (with socket or cap).


3. Optional Testing

Hydrostatic test;

Eddy current test (ECT);

Ultrasonic test (UT);

Infrared or magnetic particle test (as per project requirements).


4. Surface Treatment

Rust-preventive oil;

Black paint / Color paint;

Anti-corrosion coating (temporary or export grade).


Applications of EN 10216-2 Seamless Boiler Tube

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 400580°C for extended periods.


FAQ

1. Why is 16Mo3 suitable for seamless boiler tubes?

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.


2. What are TC1 and TC2 in EN 10216-2?

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.