Standard parts of stainless steel

Stainless steel

The Ganter product range includes a great many standard parts made of high-quality, non-rusting stainless steels. Thanks to their outstanding material properties, these are used in a wide array of industries. Their corrosion and rust resistance in particular contribute to the lasting value and long service life of machines and equipment. Operating and maintenance costs are also reduced by easy cleaning and exceptional hygiene properties, ensuring that investments in these high-quality stainless steel components quickly pay for themselves. In principle, non-rusting stainless steels offer good material characteristics with regard to yield point, strain and tensile strength. They are also abrasion-resistant, smooth and non-porous, making additional surface protection entirely unnecessary. Moreover, they have an especially low coefficient of thermal conduction, which is useful for the thermal decoupling of systems and buildings.

The specific requirements for the resistance of non-rusting stainless steels to moisture, chemicals, chlorine- and acid-containing media, aggressive atmospheres and sterilization arise mainly from the relevant areas of application, such as in food production, pharmaceutical manufacturing or the off-shore industry. The specific properties of non-rusting stainless steels depend on the composition of the alloying constituents, the production process and the manner of treatment. Overall, this can result in varied resistance levels and diverse advantages.

To make it easier to differentiate the various material types, the stainless steels used by Ganter are divided into stainless steel quality classes.

Stainless steel quality classes

Stainless steel quality class 1

In a rural atmosphere, in contact with highly diluted acids, alkaline solutions and water with low salt and mineral concentrations, the materials of stainless steel quality class 1 have moderate to good rust and corrosion resistance. For example, they can be cleaned in a washing machine and are ideally suited for functional and moving parts.
The most familiar and perhaps most widely used representative of stainless steel quality class 1 is X8CrNiS 18 9 with material designation AISI 303 (1.4305), which belongs to stainless steel group A1 due to its austenitic structure. Thanks to its excellent machinability, this material is commonly used for turned parts.
Less well known is X5CrNiMo 16 5, with material designation AISI 316F (1.4405), which belongs to stainless steel group C1 due to its martensitic structure. This stainless steel alloy can be used as a casting material. It is also weldable and frequently used for its outstanding strength properties.

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Stainless steel quality class 2

In an urban atmosphere, in contact with diluted acids, alkaline solutions and water with moderate salt and mineral concentrations, materials of stainless steel quality class 2 offer good rust and corrosion resistance. They are ideally suited in situations such as water fittings, food production machines and building components.
The most familiar and perhaps most widely used representative of stainless steel quality class 2 is X5CrN18 10 with material designation AISI 304 (1.4301), which belongs to stainless steel group A2 due to its austenitic structure. This material is primarily used for making parts that are punched, laser cut, shaped or welded.
Stainless steel X10CrN18 8 with material designation AISI 302 (1.4310), which also belongs to stainless steel group A2 due to its austenitic structure, has a special range of applications. This stainless steel alloy is used in a strain-hardened form primarily as a material for extension, compression and leaf springs.

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Stainless steel quality class 4

In marine and offshore applications, swimming pools and brine baths with chlorinated water and anywhere that aggressive cleaning agents must be used, alloys of stainless steel quality class 4 are preferred. These stainless steels owe their high resistance to acids and alkaline solutions primarily to the chromium, nickel and molybdenum components of the alloys.
One example of stainless steel quality class 4 is the alloy X2CrNiMo17 12 2 with material designation AISI 316L (1.4404), which belongs to stainless steel group A4 due to its austenitic structure. Thanks to its relatively good machinability, this material is frequently used for turned parts.
When it comes to materials optimized for casting, the alloy X6CrNiM18 10 with material designation AISI 316 (1.4408), which also belongs to stainless steel group A4 due to its austenitic structure, represents a good choice. This material also lives up to high requirements in terms of resistance, such as in the form of a precision-cast U-handle.

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