Surface Finishes

The 1D finish is our standard for hot rolled sections in stainless steel. These sections are heat-treated and a final acid pickling process removes the rolling scale. This finish is not free of surface imperfections. Imperfections are defined by the EN 10163-3. Hot rolled products are suitable for applications, where no particular aesthetic conditions are requested on the surfaces, but mainly are functional. With additional processing such as polishing or cold drawing a better finer surface can be reached.

The 1D finish is the common finish for our laser-welded sections in stainless steel. These sections are produced from strips, which are cut from hot rolled, annealed and pickled plate. The finished product is sand blasted, passivated and free from scale. Processes of welding and final straightening affect the surface. This finish is not free of surface imperfections. Imperfections are defined by the EN 10163-3-D1. Laser fused profiles from Montanstahl have an extraordinary clean and homogeneous surface and are already in with the standard mill finish suitable for a wide range of applications.
These products are suitable to be used in their present condition or to be further processed. With additional processing such as polishing or cold drawing a finer surface can be reached.

The 2H finish is our standard for cold rolled or cold drawn stainless steel section, which is a smooth, matt or bright surface. Cold formed products – depending on their deformation level – have substantially increased tensile strengths. This strain hardening can be lowered by a following heat treatment without affecting the surface, for example by annealing. Admissible Imperfections are defined by the EN 10277-1. These products are suitable to be used in their present condition or to be further processed. Cold worked profiles from Montanstahl have process-related a very smooth surface and are already with the standard mill finish suitable for a wide range of aesthetic applications. With additional processing such as grinding or polishing, a finer surface can be reached.

The AR finish (meaning as rolled) is our standard for hot rolled sections in in carbon steel, which is defined by EN 10025. The hot rolling and the final straightening process affect the surface. Admissible imperfections are defined by the EN 10163-3. Hot rolled profiles from Montanstahl have in their crude condition an above-average good surface and are already with the standard mill finish suitable for a wide range of aesthetic applications.
With additional processing such as cold drawing a finer surface can be reached.

Laser fused profiles from Montanstahl are manufactured with sheet metal strips, which are taken from hot rolled, annealed and pickled respectively blasted sheets. Processes of welding and final straightening affect the surface. This finish is not free of surface imperfections. Imperfections are defined by the EN 10163-3-D1.
Laser fused profiles from Montanstahl are blasted at the end of the production chain and therefore have an extraordinary clean and homogeneous surface. Our profiles in their standard mill finish can be classified under surface class Sa 3 of the EN (ISO) 8501-1. The blasted surface has a grey-white metallic appearance and is slightly roughened from the blasting shot, which allows a good adhesion of eventually applied coatings. The surface is free of dirt, oil, grease, visible scale, rust, corrosion products, oxides, paint or other contaminants. This surface condition is suitable for a wide range of applications. With additional processing such as polishing, a finer surface can be reached.

+C is the abbreviation that is added to the grade to direct to a cold formed execution. Cold drawn steel profiles are characterized by a smooth, matt surface and have – depending on their deformation level – substantially increased tensile strengths. This strain hardening can be lowered by a following heat treatment without affecting the surface, for example by annealing. Admissible Imperfections are defined by the EN 10277-1. These products are suitable to be used in their present condition or to be further processed. Cold worked profiles from Montanstahl have process-related a very smooth surface and are already with the standard mill finish suitable for a wide range of aesthetic applications. With additional processing such as grinding or polishing, a finer surface can be reached.