EN10028-2 18MnMo4-5 steel plate belongs to the European standard pressure vessel steel plate, which is used to manufacture reactors, heat exchangers, separators, spherical tanks, oil and gas tanks, liquefied gas tanks, nuclear reactor pressure shells, liquefied petroleum gas cylinders, turbine volutes, etc.
18MnMo4-5 chemical composition(%, by mass)
Grade |
C |
Si |
Mn |
P |
S |
N |
Cr |
Cu |
Mo |
Ni |
|
18MnMo4-5 |
≤0.20 |
≤0.40 |
0.90~1.50 |
≤0.015 |
≤0.005 |
≤0.012 |
≤0.30 |
≤0.30 |
0.45~0.60 |
≤0.30 |
Mechanical properties of 18MnMo4-5 steel plate
Material |
Delivery status |
Thick (t) |
Tensile requirements |
Impact energy KV, J |
|
Yield strength, ReH |
Tensile strength |
Elongation, A% |
|
Min. |
|
Under the following temperature (℃) |
|
Grade |
Steel no. |
mm |
MPa |
MPa |
-20 |
0 |
20 |
|
Min. |
Min. |
|
18MnMo4-5 |
1.5414 |
+NT |
≤60 |
345 |
510 ～ 650 |
20 |
27 |
34 |
40 |
|
60 < t≤150 |
325 |
|
+QT |
150 < t≤ 250 |
310 |
480～ 620 |
18MnMo4-5 steel specification
Executive standard: EN10028-2. This European standard specifies the requirements for non-alloy steel and alloy steel flat products that can be welded with high-temperature properties for pressure vessels.
Delivery status of 18MnMo4-5 steel plate:
18MnMo4-5 steel plates are usually delivered in normalized + tempered (N+T) or quenched and tempered (QT) state.
Smelting method:
Smelting by electric furnace + external refining + vacuum degassing, fine grain killed steel
The high-performance boiler drum plate 18MnMo4-5 developed this time is mainly used by a large boiler factory for the production of Singapore's new environmentally friendly boiler drum. In response to customer needs, HBIS Wugang strengthened the technical service docking, and tailor-made the high-performance boiler drum steel plate 18MnMo4-5 produced according to European standards, with a thickness of 82mm ~ 86mm. The steel plate not only has the advantage of low cost but also has the advantage of high performance. On the basis of European standards, the yield strength has been increased, the tensile strength range has been reduced, and strict requirements on impact and high temperature tensile indicators have also been put forward, making it difficult to develop.
