Carbon steel for pressure applications

Boiler steel, also known as pressure vessel steel, is a special type of steel used in the construction of boilers, pressure vessels, and other equipment operating under high pressure. This steel is designed to withstand high temperatures and pressure, as well as corrosive environments. Their designations typically begin with a "P" for "pressure" (as opposed to "S" for "structure").

Properties of Boiler Steel:

  1. High Strength: Boiler steel has high tensile and compressive strength to withstand internal pressure without failing.
  2. Heat Resistance: It can endure high temperatures without losing its structural integrity.
  3. Corrosion Resistance: Often alloyed with elements like chromium, molybdenum, and nickel to resist corrosion caused by steam and other chemicals.
  4. Ductility: It has enough flexibility to prevent deformation and cracking due to pressure changes.
  5. Weldability: It offers good weldability to ensure strong and secure connections.

Boiler steel plate according to European standard

NameMaterial NumberOld Designation
P235GH1.0345HI
P265GH1.0425HII
P295GH1.048117Mn4
P355GH1.0473

19Mn6

16Mo31.541515Mo3
13CrMo4-51.733510CrMo44
10CrMo9-101.738010CrMo910
P275NH1.0487

WStE285

P275NL11.0488TStE285
P275NL21.1104EStE285
P355N1.0562StE355
P355NH1.0565WStE355
P355NL11.0566TStE355
P355NL21.1106EStE355
P460NH1.8935WStE460
P460NL11.8915TStE460
P460NL21.8918EStE460


Boiler steel plate according to American standards:

  1. A516 Gr 60 is equivalent to P265GH
  2. A516 Gr 70 is equivalent to P355GH
  3. Occasionally, we also have other boiler steel plates in stock, such as 16Mo3 and A387Gr11

Boiler steel plates are often dual-certified for both European and American standards.

Given the relationship with our sister company Deprest, which specializes in pressure vessels, we keep a large stock of boiler steel plates.

Tabel ketelstaalplaat