钛（原子量：47.867）共有28个同位素，其中有5个是稳定的。
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| 符号
|
Z
|
N
|
同位素质量（u）
[n 1][n 2]
|
半衰期
[n 1][n 2]
|
衰变
方式[2]
|
衰变
产物
[n 3]
|
原子核
自旋[n 1]
|
相对丰度
（莫耳分率）[n 2]
|
相对丰度
的变化量
（莫耳分率）
|
| 激发能量[n 2]
|
| 38Ti
|
22
|
16
|
38.00977(27)#
|
<120 ns
|
2p
|
36Ca
|
0+
|
|
|
| 39Ti
|
22
|
17
|
39.00161(22)#
|
31(4) ms
[31(+6-4) ms]
|
β+, p (85%)
|
38Ca
|
3/2+#
|
|
|
| β+ (15%)
|
39Sc
|
| β+, 2p (<.1%)
|
37K
|
| 40Ti
|
22
|
18
|
39.99050(17)
|
53.3(15) ms
|
β+ (56.99%)
|
40Sc
|
0+
|
|
|
| β+, p (43.01%)
|
39Ca
|
| 41Ti
|
22
|
19
|
40.98315(11)#
|
80.4(9) ms
|
β+, p (>99.9%)
|
40Ca
|
3/2+
|
|
|
| β+ (<.1%)
|
41Sc
|
| 42Ti
|
22
|
20
|
41.973031(6)
|
199(6) ms
|
β+
|
42Sc
|
0+
|
|
|
| 43Ti
|
22
|
21
|
42.968522(7)
|
509(5) ms
|
β+
|
43Sc
|
7/2−
|
|
|
| 43m1Ti
|
313.0(10) keV
|
12.6(6) µs
|
|
|
(3/2+)
|
|
|
| 43m2Ti
|
3066.4(10) keV
|
560(6) ns
|
|
|
(19/2−)
|
|
|
| 44Ti
|
22
|
22
|
43.9596901(8)
|
60.0(11) y
|
ε
|
44Sc
|
0+
|
|
|
| 45Ti
|
22
|
23
|
44.9581256(11)
|
184.8(5) min
|
β+
|
45Sc
|
7/2−
|
|
|
| 46Ti
|
22
|
24
|
45.9526316(9)
|
稳定
|
0+
|
0.0825(3)
|
|
| 47Ti
|
22
|
25
|
46.9517631(9)
|
稳定
|
5/2−
|
0.0744(2)
|
|
48
Ti
|
22
|
26
|
47.9479463(9)
|
稳定
|
0+
|
0.7372(3)
|
|
| 49Ti
|
22
|
27
|
48.9478700(9)
|
稳定
|
7/2−
|
0.0541(2)
|
|
| 50Ti
|
22
|
28
|
49.9447912(9)
|
稳定
|
0+
|
0.0518(2)
|
|
| 51Ti
|
22
|
29
|
50.946615(1)
|
5.76(1) min
|
β−
|
51V
|
3/2−
|
|
|
| 52Ti
|
22
|
30
|
51.946897(8)
|
1.7(1) min
|
β−
|
52V
|
0+
|
|
|
| 53Ti
|
22
|
31
|
52.94973(11)
|
32.7(9) s
|
β−
|
53V
|
(3/2)−
|
|
|
| 54Ti
|
22
|
32
|
53.95105(13)
|
1.5(4) s
|
β−
|
54V
|
0+
|
|
|
| 55Ti
|
22
|
33
|
54.95527(16)
|
490(90) ms
|
β−
|
55V
|
3/2−#
|
|
|
| 56Ti
|
22
|
34
|
55.95820(21)
|
164(24) ms
|
β− (>99.9%)
|
56V
|
0+
|
|
|
| β−, n (<.1%)
|
55V
|
| 57Ti
|
22
|
35
|
56.96399(49)
|
60(16) ms
|
β− (>99.9%)
|
57V
|
5/2−#
|
|
|
| β−, n (<.1%)
|
56V
|
| 58Ti
|
22
|
36
|
57.96697(75)#
|
54(7) ms
|
β−
|
58V
|
0+
|
|
|
| 59Ti
|
22
|
37
|
58.97293(75)#
|
30(3) ms
|
β−
|
59V
|
(5/2−)#
|
|
|
| 60Ti
|
22
|
38
|
59.97676(86)#
|
22(2) ms
|
β−
|
60V
|
0+
|
|
|
| 61Ti
|
22
|
39
|
60.98320(97)#
|
10# ms
[>300 ns]
|
β−
|
61V
|
1/2−#
|
|
|
| β−, n
|
60V
|
| 62Ti
|
22
|
40
|
61.98749(97)#
|
10# ms
|
|
|
0+
|
|
|
| 63Ti
|
22
|
41
|
62.99442(107)#
|
3# ms
|
|
|
1/2−#
|
|
|
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画上#号的数据代表没有经过实验的证明，仅为理论推测。
- Isotope masses from Ame2003 Atomic Mass Evaluation by G. Audi, A.H. Wapstra, C. Thibault, J. Blachot and O. Bersillon in Nuclear Physics A729 (2003).
- Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report) （页面存档备份，存于互联网档案馆）. Pure Appl. Chem. Vol. 75, No. 6, pp. 683-800, (2003) and Atomic Weights Revised (2005) （页面存档备份，存于互联网档案馆）.
- Half-life, spin, and isomer data selected from these sources. Editing notes on this article's talk page.
- Audi, Bersillon, Blachot, Wapstra. The Nubase2003 evaluation of nuclear and decay properties （页面存档备份，存于互联网档案馆）, Nuc. Phys. A 729, pp. 3-128 (2003).
- National Nuclear Data Center, Brookhaven National Laboratory. Information extracted from the NuDat 2.1 database （页面存档备份，存于互联网档案馆） (retrieved Sept. 2005).
- David R. Lide (ed.), Norman E. Holden in CRC Handbook of Chemistry and Physics, 85th Edition, online version. CRC Press. Boca Raton, Florida (2005). Section 11, Table of the Isotopes.
