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NEWS! Some pieces are also available in stainless steels A5 1.4571, 1.4462 DUPLEX a 1.4529 HCR.

High-grade steel is an umbrella term for stainless, corrosion-resistant steels. These steels contain at least 10.5% chromium (Cr) and are much more corrosion-resistant than unalloyed steels. Over its long history, high-grade steel has gained importance in an increasing number of machining areas thanks to its corrosion resistance and outstanding mechanical properties. More than 1 000 machining companies have come together to form the trade association Warenzeichenverband Edelstahl Rostfrei e.V. and use this registered trademark. Austenitic chromium nickel steels offer and almost ideal combination of workability, mechanical properties, and corrosion resistance. They are therefore suited to many different applications and are the most important group of stainless steels.

Stainless steel A1 (AISI 303/305)

The A1 steel grade designates the "traditional turning steel" and is suited to simple machining, such as shape cutting. Because of their high sulfur content, steels of this steel grade are less resistant to corrosion than similar steels with a normal sulfur content.

Stainless steel A2 (AISI 304)

The steels of grade A2 are the most commonly used stainless steels and are known as "classic high-grade steels". For example, they are used for kitchen appliances and in apparatus construction, but are not suited to use in non-oxidizing acids and media containing chlorides, such as swimming pools or seawater. The A2 steel grade belongs to resistance class II.

Stainless steel A4 (AISI 316)

The steels of grade A4 are "acid-resistant steels" alloyed with molybdenum and have much better corrosion resistance. Large quantities of the A4 steels are used in the pulp industry because this grade was developed for boiling sulfuric acids (hence the name "acid-resistant) and is also suited to environments containing chlorides to a certain extent. A4 is also frequently used in the foodstuffs industry and shipbuilding and belongs to resistance class III.

Stainless steel A5 (1.4571- AISI 316Ti)

A5 steels are more resistant to corrosion because they are alloyed with titanium (>5xC to max. 0.8%) for stabilization. They also belong to resistance class III. They are used in inadequate constructions and constructions with moderate levels of chlorides and sulfur dioxide.

In stainless steel A5 (1.4574-AISI 316Ti) we are able to delivery these pieces
DIN 125 A Washer A5 Stainless steel (AISI 316Ti)DIN 127 B Spring lock washer with square ends A5 Stainless steel
DIN 912 Hexagon socket had cap screw A5 Stainless steel (AISI 316Ti)DIN 931 Hexagon head bolt, part thread A5 Stainless steel (AISI 316Ti)
DIN 933 Hexagon head bolt, full thread A5 Stainless steel (AISI 316Ti)DIN 934 Hexagon nut A5 Stainless steel (AISI 316Ti)
DIN 976 Threaded rod / Stud A5 Stainless steel (AISI 316Ti)DIN 980 Prevailing torque type hexagon nut A5 Stainless steel
DIN 9021 Washer with outside diameter 3x nominal thread diameter A5 Stainless steel (AISI 316Ti)DIN 7991 / ISO 10642 Countersunk (flat) head screw, TX A5 Stainless steel (AISI 316Ti)

Stainless steel 1.4462 (AISI 318 LN) DUPLEX

Steels of the 1.4462 grade belong to the stainless, austenitic-feritic high-grade steels. The feritic high-grade steels, know as chromium steels, are steels with a chromium content of 12 - 18 % and a very low carbon content (< 0.2 %). These steels combine the greater strength of ferritic chromium steels with the corrosion resistance of austenitic, chromium nickel steels. Belonging to resistance class IV, steel grade 1.4462 offers particularly good resistance to pitting and intergranular corrosion. This high corrosion protection, coupled with the favorable mechanical properties, means that it can be used for a huge number of purposes.

In stainless steel DUPLEX 1.4462 (AISI 318 LN) we are able to delivery these pieces
DIN 125 A Washer DUPLEX Stainless steel (AISI 318 LN)DIN 127 B Spring lock washer with square ends DUPLEX Stainless steel (AISI 318 LN)
DIN 912 Hexagon socket had cap screw DUPLEX Stainless steel (AISI 318 LN)DIN 931 Hexagon head bolt, part thread DUPLEX Stainless steel (AISI 318 LN)
DIN 933 Hexagon head bolt, full thread DUPLEX Stainless steel (AISI 318 LN)DIN 934 Hexagon nut A5 Stainless steel DUPLEX Stainless steel (AISI 318 LN)
DIN 976 Threaded rod / Stud DUPLEX Stainless steel (AISI 318 LN)DIN 980 Prevailing torque type hexagon nut DUPLEX Stainless steel (AISI 318 LN)
DIN 9021 Washer with outside diameter 3x nominal thread diameter DUPLEX Stainless steel (AISI 318 LN)

Stainless steel 1.4529 HCR (high corrosion resistant)

The highly corrosion-resistant 1.4529 steel grade is the highest of all stainless, austenitic, high-grade steels and therefore offers particularly good resistance to chlorine-induced stress corrosion (in accordance with DIN EN ISO 3506) and to local signs of corrosion such as pitting or crevice corrosion. The 1.4529 steel grade therefore also belongs to the highest resistance class V.

In stainless steel HCR 1.4529 (high corrosion resistant) we are able to delivery these pieces
DIN 125 A Washer HCR Stainless steelDIN 127 B Spring lock washer with square ends HCR Stainless steel
DIN 912 Hexagon socket had cap screw HCR Stainless steelDIN 931 Hexagon head bolt, part thread HCR Stainless steel
DIN 933 Hexagon head bolt, full thread HCR Stainless steelDIN 934 Hexagon nut A5 Stainless steel HCR Stainless steel
DIN 976 Threaded rod / Stud HCR Stainless steelDIN 980 Prevailing torque type hexagon nut HCR Stainless steel
DIN 1587 Hexagon domed cap nut, high type, turned form HCR Stainless steelDIN 6334 Hexagon nut, m = 3d HCR Stainless steel
DIN 9021 Washer with outside diameter 3x nominal thread diameter HCR Stainless steelDIN 7991 / ISO 10642 Countersunk (flat) head screw, TX HCR Stainless steel
Countersunk head timber screw with cutting point, TX HCR Stainless steel

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