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Special Steels


304H || 316H || 317L || 321H || 347H ||


We are your one-stop shop for special steels & modified steel grades.

With our special steels we support Customers engaged in several market fields, such as Energy, Aerospace, Oil & Gas, Chemical, Petrochemical, Water Treatment, Pulp & Paper, General Engineering,...

We supply BARS, SHEETS, PLATES, PIPING & TUBING, FASTENERS in various hard to find steels.


1.4948 || 1.4919 / 1.4401 || 1.4438 || 1.4878 || 1.4961 / 1.4550 ||



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304H || UNS S30409 - 1.4948 X5CrNi18-10, AISI 304H, Tp 304H, Type 304H

UNS S30409 - 1.4948
X5CrNi18-10, AISI 304H, Tp 304H, Type 304H

This special steel combines 304 stainless steel with higher carbon value C≥0.04%, in order to provide elevated temperature creep strength.
The higher Carbon content makes this stainless steel suitable for a wide range of applications, affected by heat.
304H has a good resistance to atmospheric and environmental corrosion: 304H corrosion resistance is good for applications in food a beverage, organic and inorganic chemicals.
304H stainless steel can operate in applications with nitric acid solutions and also in applications with aggressive organic acid, e.g. acetic.
304H can provide resistance to moderately reducing solutions such as pure phosphoric acid in cold solution up to 10% diluted hot solutions.
The 304H can also operate successfully in caustic solutions free of chlorides or fluorides at moderate temperatures.

Main chemistry: 

Fe balance ; Cr 18-20% ; Ni 8-10.5%; Mn 2% max; C 0.04-0.10% 

Main fields of application:

Energy, Petrochemical, Oil&Gas, Chemical, Water Treatment, Pulp & Paper   


Our products in UNS S30409 - 1.4948, X5CrNi18-10, AISI 304H, Tp 304H, Type 304H are:

  • Bars
  • Sheets
  • Plates
  • Pipes & Tubes

Main specifications: ASTM A276, ASTM A479, ASTM A182, ASTM A240

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