Corrosion-resistant (stainless) steel is a type of steel whose main feature is its corrosion resistance. It is an alloy of chromium, nickel and iron, and has a chromium content of 10.5-30%, nickel up to 30% or 2.5% manganese. At the same time it contains a number of other austenite elements such as carbon, manganese, nitrogen, and copper.

We supply the material according to EN 10088 and dimensional tolerances according to EN 9445

Mechanical properties:

Steel grade Mechanical properties
as per EN 10088  as per ČSN Yield point - Re
min. / max.
 Strength - Rm
min. / max.
 Dilatability - A80
min. %
1.4301 304 230 - 260 540 - 750 45
1.4307 304L 220 - 250 520 - 700 45
1.4401 316 240 - 270 530 - 680 40
1.4436 316 240 - 270 550 - 700 40
1.4404 316L 240 - 270 530 - 680 40
1.4435 316L 240 - 270 550 - 700 40
1.4571 316Ti 240 - 270 540 - 690 40
1.4541 321 220 - 250 520 - 720 40
1.4016 430 260 - 280 450 - 600 20

Surface quality:

EN

DIN

AISI

ČSN

Appearance

1D

a

1

xx xxx.2

Metal pure

2D

IIIb

2D

xx xxx.3

Matt

2B

IIIc

2B

xx xxx.4

Dull gloss

2R

IIId

BA

xx xxx.5

  Brilliant polish

2G

IV

K 240

 

Grinded

2J

V

SB

 

Brushed

Dimensions mm:

 

Sheet / Bespoke

Coil / strip

Thickness

0,3 - 4,0

0,3 - 2,0

Width

100 - 1 750

20 - 1 550

Length

100 - 6 000

-

Inner coil diameter

-

508 / 650

Outer coil diameter

-

max. 1 800

Breakdown of stainless steel:

There are many types of stainless steel, which differ in resistance to corrosion caused by a specific factor. According to the chemical composition of the stainless steel, we divide them into ferritic, martensitic, austenitic and austenitic-ferritic.

Ferritic

This steel is magnetic and sufficiently ductile. The higher content of chromium increases its corrosion resistance, which in oxidizing environments is higher than for martensitic steel. It is used in the chemical industry, in a nitric acid environment, in transportation, climate control, and architecture. It is not suitable in welded structures.

Martensitic

The corrosion resistance is low and drops with increasing temperature. Resistance to atmospheric corrosion is sufficient only in very clean air.

Austenitic

It has high corrosion resistance in all basic classes, and it can be increased by adding molybdenum and copper. An important feature is its ductility and toughness.

Austenitic-ferritic (duplex)

It is made from conventional austenitic steel by increasing the chromium content and decreasing the nickel content. This steel therefore has several special properties. Welding is more demanding.