EN 10216-2 1.4922 X20CrMoV11-1 Seamless Steel Tubes
X20CrMoV12-1 / 1.4922 – High-Temperature Alloy Steel for Demanding Power and Petrochemical Applications
X20CrMoV12-1, also known as 1.4922, is a high-strength, heat-resistant alloy steel designed for extreme temperatures and high-stress environments. With its unique composition, this alloy offers exceptional creep resistance, corrosion resistance, and long-term stability, making it an ideal choice for the power generation, petrochemical, and industrial processing sectors.
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.
Chemical Composition of EN 10216-2 1.4922 X20CrMoV11-1 Seamless Steel Tubes
| Steel Grade | Steel Number | C | Si | Mn | P max | Smax |
| X20CrMoV11-1 | 1.4922 |
0,17 to 0,23
|
0,15 to 0,50
|
≤ 1,00 | 0,025 | 0,010 |
| Cr | Mo | Ni | Al tot | CuVV | V |
|
10,0 to 12,5
|
0,80 to 1,20
|
0,30 to 0,80
|
≤0,040
|
≤ 0,30
|
0,25 to 0.35
|
Mechanical Properties of EN 10216-2 1.4922 X20CrMoV11-1 Seamless Steel Tubes
| Steel Grade | Upper yield strength or proof strength R eH or Rp 0,2 for Wall Thickness Tmin. | Tensile Strength Rm |
Elongation A min. % a |
|||||
| Steel Name | Steel Number | T ≤ 16 | 16 < T ≤ 40 | 40 < T ≤ 60 | 60 < T ≤ 100 | l | t | |
| MPa * | MPa * | MPa * | MPa * | MPa * | ||||
| X20CrMoV11-1 | 1.4922 | 490 | 490 | 490 | 490 | 690 to 840 | 17 | 14 |
| Steel Grade | Impact properties | |||||
| Minimum average absorbed energy KV 2 J at a temperature of °C |
||||||
| Steel Name | Steel Number | l | t | |||
| 20 | 0 | -10 | 20 | 0 | ||
| X20CrMoV11-1 | 1.4922 | 40 | – | – | 27 | – |
Note:l = longitudinal t = transverse
Impact test verification (longitudinal or transversal) is mandatory for wall thickness T ≥ 16 mm.
Minimum proof strength R p0,2 at elevated temperature of EN 10216-2 1.4922 X20CrMoV11-1 Seamless Steel Tubes
| Steel Grade | Wall thickness mm |
Minimum proof strength R p0,2 MPa at a temperature of °C | ||||||||
| Steel name | Steel number | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 550 | |
| X20CrMoV11-1 | 1.4922 | ≤ 100 | 430 | 415 | 390 | 380 | 360 | 330 | 290 | 250 |
Note:1 MPa = 1 N/mm 2 .
Dimensions tolerances of EN 10216-2
Tolerances on outside diameter and wall thicknes
| Outside Diameter D mm | Tolerances on D |
Tolerances on T for a T/D ratio | |||
| ≤ 0,025 | > 0,025 ≤ 0,050 |
> 0,050 ≤ 0,10 |
> 0,10 | ||
| D ≤ 219,1 | ± 1% or ± 0.5mm whichever is the greater |
± 12,5% or ± 0.4mm whichever is the greater | |||
| D > 219,1 | ± 20% | ± 15% | ± 12,5% | ± 10% a | |
| a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | |||||
Tolerances on inside diameter and wall thickness
| Tolerances on inside diameter | Tolerances on T for a T/d ratio | |||||
| d | d min | ≤ 0,03 | > 0,03 ≤ 0,06 |
> 0,06 ≤ 0,12 |
> 0,12 | |
| ± 1% or ± 2 mm whichever is the greater | (+ 2% ,0)or (+ 4 mm,0) |
whichever is the greater | ± 20% | ± 15% | ± 12,5% | ± 10% a |
| a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | ||||||
Tolerances on outside diameter and minimum wall thickness
| Outside diameter D mm | Tolerances on D | Tolerances on T min for a T min /D ratio | |||
| ≤ 0,02 | > 0,02 ≤ 0,04 |
> 0,04 ≤ 0,09 |
> 0,09 | ||
| D ≤ 219,1 | ± 1% or ± 0.5mm whichever is the greater |
(+ 28%,0) or (+ 0.8 mm,0) whichever is the greater | |||
| D > 219,1 | + 50% 0 |
+ 35% 0 |
+ 28% 0 |
+ 22% a 0 |
|
| a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | |||||
Tolerances on inside diameter and minimum wall thickness
| Tolerances on inside diameter |
Tolerances on T min for a T min /d ratio |
|||
| d | d min | ≤ 0,05 | > 0,05 ≤ 0,1 |
> 0,1 |
| ± 1% or ± 2 mm whichever is the greater |
(+2%,0) or (+ 4 mm,0) whichever is the greater | + 35% 0 |
+ 28% 0 |
+ 22% a 0 |
| a For outside diameters D ≥ 355,6 mm it is permitted to exceed the upper wall thickness locally by a further 5% of the wall thickness T | ||||
Tolerances on exact lengths
Dimension in mm
| Length L | Tolerance on exact length |
| L ≤ 6000 | +10 0 |
| 6000 < L ≤ 12 000 | +15 0 |
| L > 12 000 | + by agreement 0 |
Straightness
The deviation from straightness of any tube length L shall not exceed 0,001 5 L. Deviations from straightness over any one metre length shall not exceed 3 mm.
Preparation of ends
The tubes shall be delivered with bevelled ends (see Figure 1). The bevel shall have an angle α of 30°(+5°,0°) with a root face C of 1,6 mm ± 0,8 mm, except that for wall thickness T greater than 20 mm, an agreed alternative bevel may be specified.
TESTINGS
(1)Chemical analysis
(2)Tensile test(Tensile test at room temperature, Tensile test at elevated temperature)
(3)Flattening test
(4)Ring tensile test
(5)Drift expanding test
(6)Ring expanding test
(7)Impact test
(8)Leak tightness test(Hydrostatic test, Electromagnetic test)
(9)Dimensional inspection
(10) Visual examination
(11) Non-destructive testing
