Yagona raqamlash tizimi (UNS) Shimoliy Amerikada keng qabul qilingan qotishma belgilash tizimidir. Har bir UNSnumber ma'lum bir metall yoki qotishma bilan bog'liq va uning o'ziga xos kimyoviy tarkibini yoki ba'zi hollarda o'ziga xos mexanik yoki fizik xususiyatni belgilaydi.
Umumiy foydalanish titanium va titanium qotishma UNSdesignation
UNS R50400, R56400, R53400
| UNS belgisi | AISI darajasi | UZ/DIN | GB darajasi |
| UNSR 50250 | Gr1 | 3.7025 | TA1 |
| UNSR 50400 | Gr2 | 3.7035 | TA2 |
| UNSR 56400 | Gr5 | 3.7165 | TC4 |
| UNSR 52400 | Gr7 | 3.7235 | TA9 |
| UNSR 53400 | Gr12 | 3.7105 | TA10 |
Amerika standarti1 ~ 38-sinf va UNS kodiquyidagicha:
| UNS belgisi | AISI darajasi | Asosiy qotishma tarkibi (qoldiq: titanium) |
| UNS R50250 | Gr1 | toza titan |
| UNS R50400 | Gr2 | toza titan |
| UNS R50550 | Gr3 | toza titan |
| UNS R50700 | Gr4 | toza titan |
| UNS R56400 | Gr5 | 6%Al+4%V |
| UNS R54520 | Gr6 | 5%Al+2.5%Sn |
| UNS R52400 | Gr7 | 0,12~0,25%Pd |
| UNS R56320 | Gr9 | 3%Al+2.5%V |
| UNS R52250 | Gr11 | 0,12~0,25%Pd |
| UNS R53400 | Gr12 | 0,3%Mo+0,8%Ni |
| UNS R53413 | Gr13 | 0,5%Ni+0,05%Ru |
| UNS R53414 | Gr14 | 0,5%Ni+0,05%Ru |
| UNS R53415 | Gr15 | 0,5%Ni+0,05%Ru |
| UNS R52402 | Gr16 | 0,04~0,08%Pd |
| UNS R52252 | Gr17 | 0,04~0,08%Pd |
| UNS R56322 | Gr18 | 3%Al+2,5%V+0,04~0,08%Pd |
| UNS R58640 | Gr19 | 3%Al+8%V+6%Cr+4%Zr+4%Mo |
| UNS R58645 | Gr20 | 3%Al+8%V+6%Cr+4%Zr+4%Mo+0,04~0,08%Pd |
| UNS R58210 | Gr21 | 15%Mo+3%Al+2.7%Nb+0.25%Si |
| UNS R56407 | Gr23 | 6%Al{{2}}4%V+ELI |
| UNS R56405 | Gr24 | 6%Al+4%V+0,04~0,08%Pd |
| UNS R56403 | Gr25 | 6%Al+4%V+0,04~0,08%Pd+0,3~0,8%Ni |
| UNS R52404 | Gr26 | 0,08 ~ 0,14% Ru |
| UNS R52254 | Gr27 | 0,08 ~ 0,14% Ru |
| UNS R56323 | Gr28 | 3%Al+2,5%V+0,08~0,14%Ru |
| UNS R56404 | Gr29 | 6%Al+4%V+0,08~0,14%Ru |
| UNS R53530 | Gr30 | 0,3%Co+0,05%Pd |
| UNS R53532 | Gr31 | 0,3%Co+0,05%Pd |
| UNS R55111 | Gr32 | 5%Al+1%Sn+1%Zr+1%V+0.8%Mo |
| UNS R53442 | Gr33 | 0,4%Ni+0,015%Pd+0,025%Ru+0,15%Cr |
| UNS R53445 | Gr34 | 0,4%Ni+0,015%Pd+0,025%Ru+0,15%Cr |
| UNS R56340 | Gr35 | 4.5%Al+2%Mo+1.6%V+0.5%Fe+0.3%Si |
| UNS R58450 | Gr36 | 4,5% Nb |
| UNS R52815 | Gr37 | 1,5%Al |
| UNS R54250 | Gr38 | 4%Al+2,5%V+1,5%Fe |
