EN 10216-2 Seamless Steel Tube
1.4922 X20CrMoV11-1 Seamless Steel Tubes
EN 10216-2 1.4922 X20CrMoV11-1 Seamless Steel Tubes
Short Description:
X20CrMoV11-1 Seamless Tubes are high-alloy tubes.which contain a lot of Cr in the chemical composition, which resistant to high temperature, low temperature and corrosion.which used in power plant boilers and oil refinery furnaces.
EN 10216-2 1.4922 X20CrMoV11-1 Seamless Steel Tubes are high-alloy tubes. Because the alloy tubes contain a lot of Cr in the chemical composition, they are resistant to high temperature, low temperature and corrosion. They are mainly used in power plant boilers and oil refinery furnaces.EN 10216-2 1.4922 X20CrMoV11-1 Seamless Steel Tubes are subject to strict EN10204 3.2 third-party testing before use.
Standard:BS EN 10216-2:2013
Seamless steel tubes for pressure purposes — Technical delivery conditions Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties.
EN 10216-2 1.4922 X20CrMoV11-1 Seamless Steel Tubes Quick Details
Manufacture:Seamless process
Wall thickness(WT): 2.1mm——20 mm.
Outer diameter (OD): 21 mm——509mm
Length: 6M or specified length as required.
Ends: Plain End, Beveled End, Threaded
Additional Info
Surface: Tubes will be varnished to prevent rust.
Marking: Standard + Steel Grade + Size + Heat No + Lot No
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden) or as required
Manufacturing process
steel making process
1.4922 X20CrMoV11-1 Steels shall be fully killed.
The tubes shall be manufactured by a seamless process.
We will hot work or cold work the tube according to the actual requirements. Tubes should be cold-finished prior to heat treatment.
Heat Treatment For EN 10216-2 1.4922 X20CrMoV11-1 Seamless Steel Tubes
| Steel Grade | Heat treatment a | Austenizing | Tempering | |||
| Steel Name | Steel Number | Temperature °C | Cooling Medium | Temperature °C | Cooling medium | |
| X20CrMoV11-1 | 1.4922 | +NT c | 1020 to 1080 | air | 730 to 780 | air |
| a +N = Normalizing, +NT = Normalizing + Tempering, +QT = Quenching + Tempering (air or liquid), +I = Isothermal Annealing. b Normalizing includes Normalizing Forming. Normalized Forming shall be carried out in a temperature range from 880 °C to 1 000 °C. c For these steel grades it may be necessary in the case of wall thickness T above 10 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 “. | ||||||
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 |
Note:
1.In order to facilitate subsequent forming operations, an agreed maximum copper content lower than indicated and an agreed specified maximum tin content shall apply.
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.
Testing
(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
Note:
a The choice of flattening or ring tensile test and of drift expanding test or ring expanding test is at the manufacturer’s
discretion.
b For steel grades X20CrMoV11-1 tubes, the flattening or ring tensile test and the drift expanding test or ring expanding test shall be carried out at one end of 20 % of the tubes of each test unit.
c Group A: tubes having wall thickness T ≥ 16 mm manufactured from steel grades X20CrMoV11-1,
In the event that the purchaser does not indicate a wish to implement any of these options at the time of enquiry and order, the tubes shall be supplied in accordance with the basic specification
Marking
Marking to be applied
The marking shall be indelibly marked on each tube at least at one end. For tubes with outside diameter D ≤ 51 mm the marking on tubes may be replaced by the marking on a label attached to the bundle or box.
EXAMPLE 100 m – Tube – d min 240 x T min 40 – EN 10216-2 1.4922 X20CrMoV11-1
Marking can be customized according to customer requirements
Protection
The tubes will be delivered with A temporary protective coating or durable coating and/or lining