Please see our product range and grade.

304l 1.4306

Chemical Composition

Consequently finished steel products are sometimes supplied to the market ‘dual certified’ to each grade designations as they’ll then be used for fabrications specifying either grade, inside a specific normal. The welding consumables for both types are based on a low carbon composition, to avoid intercrystalline corrosion risk within the solidified weld nugget or from the diffusion of carbon into the father or mother (surrounding) steel.

En 1.4306, Astm Type 304l

X8CrNiS18-9, 1.4305, AISI Automatic stainless steel with excessive carbon and sulphur content for cutting. Stainless steel derivative from 1.4301 with lowered carbon content material, increased chromium and nickel. In aqueous solutions containing halogenides, e.g. chlorides or bromides, pitting and crevice corrosion may occur depending on halogenide concentration, temperature, pH-worth, focus of oxidizing compounds, or crevice geometry, if relevant. For a short period of time, for instance throughout cooking of meals in stainless-steel dishes, Core 304L/4306 can tolerate even comparatively high chloride concentrations.


  • Core 304L/4306 has the variant with 10.5 wt.% nickel for improved formability and low carbon content material for improved resistance towards intergranular corrosion after welding.
  • Core 304L/4306 is an austenitic stainless steel that belongs to the standard CrNi chrome steel family.
  • Core 304L/4306 is a better nickel different to Core 304L/4307 with improved formability and deep drawability.
  • X5CrNi18-10 and S30400 steel is a mass-produced grade, showing in most forms of semi-finished products, starting from pipes, sheets, bars, profiles or strips.

The presence of corrosion-inhibiting or accelerating compounds like e.g. transition steel ions or natural compounds may influence the corrosion behaviour of grade Core 304L/4306. Commercially produced steels, utilizing current steelmaking strategies, are sometimes produced because the low carbon sort as a matter in fact as a result of improved management in trendy steelmaking.

X5crni18-10, 1.4301, Aisi 304 – Specification And Application

This also applies to sure liquid metals at high temperatures – lead, cadmium, zinc, and alumina. In order to completely restore the corrosion resistance of the weld seam, the weld discoloration must be removed by pickling and passivation. The mechanical properties of the obtainable merchandise are given in the desk under. In addition to these values, a number of of the chromium-nickel grades are available in the mood rolled condition with larger mechanical power. Please contact your native Outokumpu sales firm for more information.

There does not seem to be a transparent purpose for this and the differences are probably associated with the decrease strength of the low carbon kind. The low carbon type could also be easier to form and kind, which in flip can also affect the levels of residual stress left the steel after is forming and fitting up for welding. This may result in the ‘normal’ carbon varieties needing more pressure to carry them in place once fitted-up for welding, with extra of a bent to spring-back if not properly held in place.

If the carbon degree is below zero.030% then this intercrystalline corrosion doesn’t take place following exposure to these temperatures, particularly for the sort of instances usually experienced within the warmth affected zone of welds in ‘thick’ sections of metal A240 304L Stainless steel plate. We have a full-automatic natural gas furnance with 24 mtrs in size for annealing, the tolerance between the setted and actual tempreture might be within 10℃, and it ensures the mechanical properities and the quality of the pipe floor.