| Trade Desig. |
UNS No. |
Typical Composition ( % ) | Form | Treatment | Tensile Strength MPa | Yield Strength (0.2% offset) MPa | Elonga tion % | Hardness | Description and Applications | |||||
| C | Mn | Cr | Mo | Ni | Others | Min. | Min. | Min. | Max. | |||||
| Austenitic Stainless Steels | ||||||||||||||
| 301 | S30100 | 0.10 | 1 | 17 | 7 | Sheet | Annealed 1/4 to Full Hard | 758 860-1275 |
276 515-965 |
60 25-9 |
202 HB 25 HRC to 41 HRC |
A dual purpose grade-for deep drawn components and high strength springs and panelling | ||
| 302HQ | S30430 | 0.03 | 0.6 | 18 | 9 | Cu 3.5 | Wire | Annealed Lightly Drawn 4.0 min Dia. | 485-690 520-725 |
- | - | - | Wire for severe cold heading applications such as cross-recess serews. | |
| 303 | S30300 | 0.06 | 1.8 | 18 | 9 | S 0.3 | Bar | Annealed Cold Drawn | 621 689 |
241 414 |
50 40 |
160 HB 228 HB |
Free machining version for high speed repetition machining. Also available as "Ugima" 303 improved machinability bar for even higher machinability. | |
| 304 | S30400 | 0.05 | 1.5 | 18.5 | 9 | Plate | Annealed | 515 | 205 | 40 | 92 | Standard austenitic grade-excellent fabrication characteristics with good corrosion resistance. Also available as "Ugima" 304 improved machinability bar. | ||
| 304L | S30403 | 0.02 | 1.5 | 18.5 | 9 | Plate | Annealed | 485 | 170 | 40 | 88 HRB | Low carbon version of 304 gives resistance to intergranular corrosion for heavy section welding and high temperature applications. | ||
| 308L | S30803 | 0.02 | 1 | 19.5 | 10.5 | Filler wire for welding 304 and similar grades. | ||||||||
| 309 | S30900 | 0.05 | 1.5 | 23 | 13.5 | Good corrosion resistance and good resistance to attack by hot sulphur compounds in oxidising gases. Filler for welding dissimilar metals. | ||||||||
| 310 | S31000 | 0.08 | 1.5 | 25 | 20 | Plate | Annealed | 515 | 205 | 40 | 95 HRB | Good resistance to oxidation and carburising atmospheres in temperatures 850-1100°C | ||
| 316 | S31600 | 0.05 | 1 | 17 | 2 | 11 | Plate | Annealed | 515 | 205 | 40 | 95 HRB | Higher resistance than 304 to many media, particularly those containing chlorides. Also available as "Ugima" 316 improved machinability bar. | |
| 316L | S31603 | 0.02 | 1 | 17 | 2 | 11 | Plate Bar |
Annealed | 485 515 |
170 205 |
40 40 |
95 HRB | Low carbon version of 316 gives resistance to intergranular corrosion for heavy section welding and high temperature applications. | |
| 321 | S32100 | 0.04 | 1 | 18 | 9 | Ti 0.5 | Sheet | Annealed | 515 | 205 | 40 | 95 HRB | Titanium stabilized grade resists intergranular corrosion during exposure at 425-850°C. High strength in this temperature range. | |
| 347 | S34700 | 0.04 | 1 | 18 | 9 | Nb 0.7 | Plate | Annealed | 515 | 205 | 40 | 92 HRB | Niobium stabilized grade resists intergranular corrosion as for 321, but more commonly used as a filler for welding 321. | |
| 904L | N08904 | 0.02 | 1 | 20 | 4.5 | 24 | Cu 1.5 | Plate | Annealed | 550 | 250 | 40 | 84 HRB | Super austenitic grade with very high corrosion resistance, particularly to sulphuric acid and warm chlorides. |
| 2111HTR | S30815 | 0.08 | 0.6 | 21 | 11 | N 0.16 Ce 0.06 |
Plate | Annealed | 600 | 310 | 40 | 95 HRB | Excellent scaling and creep resistance at temperatures up to 1150°C. | |
| 4565S | S34565 | 0.02 | 6 | 24 | 5 | 17 | N 0.45 | Plate | Annealed | 900 | 450 | 40 | Super austenitic grade with extremely high corrosion resistance, particularly to strong acids and hot chlorides. | |
