Steel

Steel is an alloy of iron, carbon and other alloying elements containing less than 2.14% carbon. Like steel, they are considered alloys in practice, they contain mainly iron and can be transformed into other compounds.

We generally divide steel into hot-rolled steel and cold-rolled steel.

The feedstock for cold-rolled products consists of steel plates or hot-rolled coils. These are further refined by rolling, re-crystallizing annealing and again light rolling. The result is a uniform structure and better surface material than hot-rolled sheets. Cold-rolled steel products are therefore used in the automotive and electronics industries.

The advantage of hot-rolled steel plates is good weldability. That is why they are intended for the engineering, construction and energy industries.

Properties and use of steel

The popularity of steel products primarily lies in its high strength, excellent formability, aesthetics and resistance to corrosion. If we take the reasonable acquisition costs into account, steel is the ideal starting material in almost all industries. Specifically, we can mention the loadbearing structure of buildings, bridges and walkways, stairs, etc. Another advantage is also the full recyclability of steel structures.

DIN 1.4301 -  AISI 304.

Steel resistant to water, steam, humidity, weak organic and inorganic acids up to medium temperatures. It has wide opportunities of application, e.g. in foodstuffs, dairy, brewery and viniculture industries, in pharmaceuticals and cosmetics, home appliances, household goods, in the production of chemical instruments, in architecture, for surgical instruments, for the construction food preparation facilities and sanitary equipment.

DIN 1.4306 - AISI 304L.:

Chemical resistance is comparable with material DIN 1.4306, and retains similar benefits of application however cold formability is better. Applications can be found in production of welded structures and products.

DIN 1.4305 - AISI 303:

Thanks to very good workability this steel is commonly known as automate type one. It is applied for the manufacture of components for automated machinery and the manufacture of standard machine components.

DIN 1.4541 - AISI 321:

The chemical resistance is similar to that of DIN 1.4301 and has the same benefits of application. Thanks to stabilisation by titanium it is impossible to polish it to high gloss. This material very suitable for structures with a thickness over 6 mm, which can not be heat treated after welding. Applications are typical in the pharmaceutical, chemical and power engineering fields.

DIN 1.4401 - AISI 316

This grade of steel is used where construction components and tools are to be of medium strength. This steel resists permanent effects of water, steam and humidity. It is applied in the chemical, textile, pharmaceutical, paper and foodstuff fields ensuring minimum contamination of food.

DIN 1.4404,1.4435 - AISI 316L:

These steel grades have increased corrosion resistance in chemical environments. It is used for structural components, instruments and apparatus in the chemical industry. It features with high chemical stress especially through forming, acetic, sulphuric and phosphoric acids. Another typical application covers equipment that is in contact with saltwater, printing industry, varnishes and sulphides, the chemical and dairy industries.

DIN 1.4571 - AISI 316Ti:

This steel is suitable for structural components, instruments and apparatus in the chemical industry, for use in media containing halogen and non-oxidizing acids and where materials free of molybdenum are not sufficient. This is a standard material within the sphere of construction the chemical instruments. Traditional applications cover chemical, pharmaceutical and rubber industries along with fields producing the pulp, textile, inks, fertilizers, plastics and fuels.

DIN 1.4016 - AISI 430:

Ferritic steel with high chromium content ensures good resistance to water, steam, humidity, and weak acid a alkaline resistance, frequent applications are in the sphere of gastronomy, in foodstuff production, household and kitchen appliances, medical technology, sanitary and air conditioning facilities.

Film Types

POLYETHYLENE FILM, BLUE, TRANSPARENT, THICKNESS – 80 MICRONS

Suitable for temporary protection of stainless sheets and coils. Very suitable for manufacturing from deep-drawing sheet, featured with an "Easy Peel" effect.

POLYETHYLENE FILM, BLACK & WHITE WITH BLUE STRIPES, THICKNESS – 80 MICRONS

Suitable for temporary protection of stainless sheets and coils. Printed stripes enable one to identify the rolling direction and/or direction of the surface treatment. Used as a standard.

POLYETHYLENE FILM, BLACK & WHITE WITH BLUE STRIPES AND ARROWS, THICKNESS – 100 MICRONS

Developed especially for temporary protection of stainless sheets and coils cut by laser, it has very high adhesiveness. Printed arrows enable one to identify the rolling direction and/or direction of the surface treatment.

Conversion table of standards and basic mechanical properties.

Comparison in accordance with ČSN, EN 10088-1 and 10088-2.

The above represents an approximate comparison of mechanical values.

Comparison of utility properties for information only

Comparison of chemical composition

Weight table in kgs

Stainless steel sheets – marking and surface treatment

Survey of basic EN standards

EN – Material standards

EN - Dimensional Allowances