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Special Steels
Stainless, acid- and heat-resistant steels
have an excellent resistance to corrosive media, provide high strength
and elongation, and high thermal stability. Stainless steels are commonly
divided into five groups: martensitic stainless steels, ferritic stainless
steels, austenitic stainless steels, Duplex (ferritic-austenitic) stainless
steels, and precipitation-hardening stainless steels. Because of their
outstanding properties, they are used in chemical industry, in mechanical
engineering, in food industry, and in the energy, medicine, traffic and
transport industries.
The properties of this category steel are:
| Ravne |
W. No. |
DIN |
AISI/Sae |
JIS |
| PK2SP |
1.4057 /
1.2728 |
X 20CrNi 172 /
X 23CrNi 17 |
431 |
SUS 431 |
| PK346 |
1.4542 |
X 5CrNiCu10b 16-4 |
630 (17-4 PH) |
SUS 430 |
| PK348 |
1.4125 |
X 105CrMo 17 |
440C |
SUS 440C |
|
Grades |
Average Chemical Compositon % |
|
Aisi No. |
Werk No. |
Ravne Grade |
C. |
Si. |
Mn. |
Cr. |
Mo. |
V. |
W. |
Co. |
Oths. |
| 431 |
1.4057/ 1.2728 |
PK2SP |
0.15 |
1.0 |
1.50 |
15.5 |
|
|
|
|
Ni 1.6 |
| Applications : Shafts, valves, components for dairies, machine building & paper industry. |
|
Grades |
Average Chemical Compositon % |
|
Aisi No. |
Werk No. |
Ravne Grade |
C. |
Si. |
Mn. |
Cr. |
Mo. |
V. |
W. |
Co. |
Oths. |
630
(17-4PH) |
1.4542 |
PK346 |
0.07 |
0.70 |
1.50 |
15.5 |
0.60 |
|
|
|
Ni 3.25 Nb 0.45 Cu 3.25 |
| Applications : Corrosion-resistance, good machinability. Screws and spindles for fittings, wheels & compressor covers.. |
|
Grades |
Average Chemical Compositon % |
|
Aisi No. |
Werk No. |
Ravne Grade |
C. |
Si. |
Mn. |
Cr. |
Mo. |
V. |
W. |
Co. |
Oths. |
| 440C |
1.4125 |
PK348 |
1.0 |
1.0 |
1.0 |
16.5 |
0.50 |
|
|
|
|
| Applications : For hardening, wear resistant. Products with highest hardness & wear resistance, knives, nozzles, medical instruments, ball bearings. |
Next > ALLOY CONSTRUCTION STEELS
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