| Category | Steel grade | Standard | Country | Application |
|---|---|---|---|---|
| Special Alloy | E8201 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | F8252 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | F8251 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E8351 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E8332 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E8331 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E8330 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E8321 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E8311 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | F8310 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | X12Ni5 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | X8Ni9 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | 15NiMn6 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | 13MnNi6-3 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | 12Ni14 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E3425 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E3406 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1 556 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1 555 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1 529 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1528 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | EI527 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1526 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1517 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1353 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1 352 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1 351 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1314 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1313 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1312 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1311 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | E1310 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | HS18-1-1-5 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | HS18-0-1 | UNE | Spain | Spain structural alloy steel |
| Special Alloy | HS121-5-5 | UNE | Spain | Spain structural alloy steel |
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