MAIN GROUPS OF THE STEELS RESISTANT TO CORROSION
| RODZAJ STRUKTURY / TYPE OF STRUCTURE | GŁÓWNY SKŁADNIK STOPU / MAIN COMPONENT OF ALLOY |
|---|---|
| Ferrytyczna / Ferritic | Cr |
| Martenzytyczna / Martensitic | Cr, C lub Ni |
| Austeniczna / Austenitic | Cr, Ni, Mo |
| Austenityczno–Ferrytyczna / Ferritic-Austenitic (DUPLEX) | Cr, Ni, Mo wyższe zawartości Cr i niższe zawartości Ni niż w stalach austenitycznych / higher content of Cr and lower content of Ni than austenitic steels |
STEEL GRADES
| PN-EN | PN | AISI / ASTM | DIN | ||
|---|---|---|---|---|---|
| STAL NIERDZEWNA STAINLESS STEEL |
FERRYTY | 1.4000 | 0H13 | 410S | X6Cr13 |
| 1.4003 | X2CrNi12 | – | – | ||
| 1.4016 | H17 | 430 | C6Cr17 | ||
| 1.4510 | 0H17T | 430Ti 439 |
X3CrTi17 | ||
| MARTENZYTY | 1.4006 | 1H13 | 410 | X12Cr13 | |
| 1.4021 | 2H13 | 420 | X20Cr13 | ||
| 1.4028 | 3H13 | 420F | X30Cr13 | ||
| 1.4031 | 4H13 | 420 | X39Cr13 | ||
| 1.4034 | 4H13 | 420 | X46Cr13 | ||
| 1.4122 | 3H17M | – | X39CrMo17-1 | ||
| AUSTENITY | 1.4301 | 0H18N9 | 304 | X5CrNi18-10 | |
| 1.4306 | 00H18N10 | 304L | X2CrNi19-11 | ||
| 1.4307 | – | (304L) | X2CrNi18-9 | ||
| 1.4310 | 1H18N9 | 301 | X10CrNi18-8 | ||
| 1.4311 | – | 304LN | X2CrNiN18-10 | ||
| 1.4401 | 0H17N12M2T | 316 | X5CrNiMo17-12-2 | ||
| 1.4404 | 00H17N14M2 | 316L | X2CrNiMo17-12-2 | ||
| 1.4429 | – | 316LN | X2CrNiMoN17-13-3 | ||
| 1.4435 | – | 316L | X2CrNiMo18-14-3 | ||
| 1.4539 | 0H22N24 M4TCu |
904L N 8904 |
X1NiCrMoCu25-20-5 | ||
| 1.4541 | 1H18N9T 1H18N10T 0H18N10T |
321 | X6CrNiTi18-10 | ||
| 1.4571 | H17N13M2T H18N10MT |
316Ti | X6CrNiMoTi17-12-2 | ||
| DUPLEX | 1.4362 | – | S 32304 | X2CrNiN23-4 | |
| 1.4410 | LH18N10M2 | – | X2CrNiMoN25-7-4 | ||
| 1.4462 | – | S 31803 | X2CrNiMoN22-5-3 | ||
| STAL ŻAROODPORNA HEAT-RESISTANT STEEL |
FERRYT | 1.4724 | H13JS | – | X10CrAlSi13 |
| 1.4742 | H18JS | – | X10CrAlSi18 | ||
| 1.4762 | H24JS | (446) | X10CrAlSi25 | ||
| AUSTENITY | 1.4828 | H20N12S2 | 309 | X15CrNiSi20-12 | |
| 1.4841 | H25N20S2 | 310 314 |
X15CrNiSi25-21 | ||
| 1.4843 | H23N18 | – | X16CrNi25-20 | ||
| 1.4845 | – | 310S | X8CrNiSi25-21 | ||
| 1.4864 | H16N36S2 | 330 | X12NiCrSi35-16 | ||
STEEL PROPERTIES
The group of steels of special physical – chemical properties, resistant to corrosion caused by water, atmospheric factors, diluted acids, alkaline solutions.
Steel stainlessness, acid resistance, and heat resistance is obtained by adding chromium and nickel as well as molybdenum in appropriate amount, and for heat resistance steels by adding aluminium, silicon and cerium. At present the steels resistant to corrosion are divided into two groups: stainless steels and heat-resistant steels.
Stainless steels comprise all the steels of high resistance to corrosion, except of the heat resistance ones. Stainless steels are used in the temperatures up to 5000 C. Numbering within the range from 1.40 … – 1.45 …
Heat resistant steels (including the creep resistant ones) show high corrosion resistance including that for oxidation (formation of scale) in the temperatures above 5000 C. Besides, creep resistant steels are required to maintain their mechanical properties on stable level under this conditions. Numbering within the range from 1.47 … – 1.48 …
The main properties of the steels referred to above are: resistance to corrosion in various environment conditions, resistance to high temperatures, low thermal expansion, rigidity, strength, durability, easy-machining and joining.
APPLICATION
Steel is used in the chemical industry, construction industry, architecture, and for interior fitments. It is also used in the food industry, brewing industry, automotive and transportation industry, power industry, paper-making industry, tool-making and medical industry, and also at the production of household articles.