钛合金的分类据资料介绍，有多种分类法，比较常见的是以退火后的金相组织形态进行分类：
2、退火后基本组织是a+B，但是以a 相为主的，称为近a型合金；
3、退火后基本相a+B，两个相相近，称为a+B型合金，也可以称为a等轴+B转或者a初生等轴+B转或者a初生等轴+a魏氏+B残余；
4、退火后基本上是B相，但还有一定的a相的，称为近B型合金；
5、退火后基本全是B相的，称为B型合金。
钛及钛合金牌号及退火后金相组织分类
| 类型 | 牌号 | 与国外相近的牌号 | 名义成分 | 晶型 | 金相组织特点 |
| 工业纯钛 | TA1 | Gr.1 BT1-00 | 工业纯钛 | a型 | a单项组织 |
| TA1-ELI | Gr.1ELI | 工业纯钛 | |||
| TA1-1 | BT-00CB | 工业纯钛 | |||
| TA2 | Gr.2 BT1-0 | 工业纯钛 | |||
| TA2-ELI | 工业纯钛 | ||||
| TA3 | Gr.3 | 工业纯钛 | |||
| TA3-ELI | 工业纯钛 | ||||
| TA4 | Gr.4 | 工业纯钛 | |||
| TA4-ELI | 工业纯钛 | ||||
| a合金 | TA5 | Ti-4Al-0.005B | |||
| TA6 | BT5 | Ti-5Al-2.5Sn | |||
| TA7 | Gr.6 BT5-1 | Ti-5Al-2.5Sn | |||
| TA7ELI | Ti-5Al-2.5Sn(ELI) | Ti-5Ai-2.5Sn(ELI) | |||
| TA8 | Gr.16 | Ti-0.05Pd高氧 | |||
| TA8-1 | Gr.17 | Ti-0.05Pd低氧 | |||
| 近a合金 | TA9 | Gr.7 | Ti-0.2Pd高氧 | a+B转 | a+少量B组织 |
| TA9-1 | Gr.11 | Ti-0.2Pd低氧 | |||
| TA10 | Gr.12 | Ti-0.3Mo-0.8Ni | |||
| TA11 | Ti-811 | Ti-8Al-1Mo-1V | |||
| TA12 | (Ti-55) | Ti-5.5Al-4Sn-2Zr-1Mo-0.2Si-1Nd | |||
| TA12-1 | (Ti-55) | Ti-5.0Al-4Sn-2Zr-1.5Mo-0.2Si-1Nd | |||
| TA13 | IMI230 | Ti-2.5Cu | |||
| TA14 | Ti-679(IMI679) | Ti-2.3Al-11Sn-5Zr-1Mo-0.2Si | |||
| TA15 | BT20 | Ti-6.5Al-1Mo-1V-2Zr | |||
| TA15-1 | BT20-1CB | Ti-2.5Al-1Mo-1V-1.5Zr | |||
| TA15-2 | BT20-2CB | Ti-4Al-1Mo-1V-1.5Zr | |||
| TA16 | ПТ-7M | Ti-2Al-2.5Zr | |||
| TA17 | ПТ-3B | Ti-4Al-2V | |||
| TA18 | Gr.9 OT4-1B | Ti-3Al-2.5V | |||
| TA19 | Ti-6242S | Ti-6Al-2Sn-4Zr-2Mo-0.1Si | |||
| TA20 | СПТ-2 | Ti-4Al-3V-1.5Zr | |||
| TA21 | OT4-0 | Ti-1Al-1Mn | |||
| TA22 | (Ti-31) | Ti-3Al-1Mo-1Ni-1Zr | |||
| TA22-1 | (Ti-31A) | Ti-3Al-0.5Mo-0.5Ni-0.5Zr | |||
| TA23 | (Ti-70) | Ti-2.5Al-2Zr-1Fe | |||
| TA23-1 | (Ti-70A) | Ti-2.5Al-2Zr-1Fe | |||
| TA24 | (Ti-75) | Ti-3Al-2Mo-2Zr | |||
| TA24-1 | (Ti-75A) | Ti-2Al-1.5Mo-2Zr | |||
| TA25 | Gr.18 | Ti-3Al-2.5V-0.05Pd | |||
| TA26 | Gr.28 | Ti-3Al-2.5V-0.1Ru | |||
| TA27 | Gr.26 | Ti-0.10Ru高氧 | |||
| TA27-1 | Gr.27 | Ti-0.10Ru低氧 | |||
| TA28 | Ti-3Al | ||||
| TC1 | OT4-1 | Ti-2Al-1.5Mn | |||
| TC2 | OT4 | Ti-4Al-1.5Mn | |||
| a+B合金 | TC3 | Ti-5Al-4V | a+B | a+B基本均衡组织 | |
| TC4 | Gr.5 BT6 | Ti-6Al-4V | |||
| TC4ELI | Gr23 Ti-6Al-4VELI | Ti-6Al-4V | |||
| TC6 | BT3-1 | Ti-6Al-1.5Cr-2.5Mo-0.5Fe-0.3Si | |||
| TC8 | BT8 | Ti-6Al-3.5Mn-0.25Si | |||
| TC9 | Ti-6.5Al-3.5Mn-2.5Sn-0.3Si | ||||
| TC10 | Ti-662 | Ti-6Al-6V-2Sn-0.5Cu-0.5Fe | |||
| TC11 | BT9 | Ti-6.5Al-3.5Mo-1.5Zr-0.3Si | |||
| TC12 | Ti-5Al-4Mo-4Cr-2Zr-2Sn-1Nb | ||||
| TC15 | Ti-5Al-2.5Fe | Ti-5Al-2.5Fe | |||
| TC16 | BT16 | Ti-3Al-5Mo-4.5V | |||
| TC17* | Ti-17 | Ti-5Al-2Sn-2Zr-4Mo-4Cr | |||
| TC18* | BT22 | Ti-5Al-4.75Mo-4.75V-1Cr-1Fe | |||
| TC19 | Ti-6246 | Ti-6Al-2Sn-4Zr-6Mo | |||
| TC20 | IMI367 | Ti-6Al-7Nb | |||
| TC21* | (Ti-62222S) | Ti-6.0Al-2.5Mo--2Nb-2Sn-2Zr-1.5Cr-0.1Si | |||
| TC22 | Gr.24 | Ti-6Al-4V-0.05Pd | |||
| TC23 | Gr.29 | Ti-6Al-4V-0.1Ru | |||
| TC24* | Ti-4322 SP-700 | Ti-4.5Al-3V-2Mo-2Fe | |||
| TC25* | BT25 | Ti-6.5Al-2Mo-1Zr-1Sn-1W-0.2Si | |||
| TC26 | Ti-13Nb-13Zr | Ti-13Nb-13Zr | |||
| 近B合金 | TB2 | Ti-3Al-5Mo-5V-8Cr | B+B转中析出a | B+少量a | |
| TB3 | Ti-3.5Al-10Mo-8V-1Fe | ||||
| TB4 | Ti-4Al-7Mo-10V-2Fe-1Zr | ||||
| TB5 | Ti-15-3-3-3 | Ti-15V-3Cr-3Sn-3Al | |||
| TB6 | Ti-1023 | Ti-10V-2Fe-3Al | |||
| B合金 | TB7 | Ti-32 | Ti-32Mo | B型 | B单项组织 |
| TB8 | Β21s | Ti-15Mo-3Al-2.7Nb-0.25Si | |||
| TB9 | βc | Ti-3Al-8V-6Cr-4Mo-4Zr | |||
| TB10 | (Ti-5523) | Ti-5Mo-5V-2Cr-3Al | |||
| TB11 | Ti-15Mo | Ti-15Mo | |||
