The titanium & titanium alloy fasteners include titanium bolts, screws & studs manufactured to ASTM F468 / F468M and titanium nuts manufactured to ASTM F467 / F467M. Both of the standards cover 8 grades of titanium & titanium alloys: titanium Grade 1 (R50250), Grade 2 (R50400), Grade 4 (R50700), Grade 5 (R56400), Grade 7 (R52400), Grade 19 (R58640, Ti-38-6-44), Grade 23 (R56401, Ti-6Al-4V ELI), Grade 32 (R55111, Ti-5-1-1-1). The fasteners can be cold formed, hot formed, or machined from suitable material.
ASTM F467 / F467M Titanium & Titanium Alloy Nuts
ASTM F467 / F467M covers wrought titanium & titanium alloy nuts 0.25″ to 1.50″ inclusive in diameter [M6 to M36 in nominal thread diameters]. The materials may be manufactured to ASME B18.2.2, ASME B18.2.4.1M, and other standards upon purchaser’s request. Its screw threads shall be furnished in accordance with ASTM B1.13M.
| Ti & Ti Alloy |
Hardness |
Proof Stress |
| Grade |
min. |
ksi |
MPa |
| 1 |
140 HV |
40 |
275 |
| 2 |
150 HV |
55 |
380 |
| 4 |
200 HV |
85 |
585 |
| 5 |
30 HRC |
135 |
930 |
| 7 |
160 HV |
55 |
380 |
| 19 |
24 HRC |
120 |
825 |
| 23 |
25 HRC |
125 |
860 |
| 32 |
24 HRC |
105 |
725 |
*Mechanical properties of titanium & titanium alloy nuts in accordance with ASTM F467 / F467M.
ASTM F468 / F468M Titanium & Titanium Alloy Bolts, Screws & Studs
ASTM F468 / F468M covers wrought titanium & titanium alloy bolts, screws, and studs 0.25″ to 1.50″ inclusive in diameter [M6 to M36 in nominal thread diameters]. The materials may be manufactured to ASME B18.2.1, ASME B18.2.3.1M, and ASME B18.2.3.5M.
| Ti & Ti Alloy |
Tensile Strength, min. |
Yield Strength, min. |
Hardness |
Elongation |
| Grade |
ksi |
MPa |
ksi |
MPa |
- |
min. % |
| 1 |
35 |
240 |
25 |
170 |
140~160 HV |
24 |
| 2 |
50 |
345 |
40 |
275 |
160–180 HV |
20 |
| 4 |
80 |
550 |
70 |
483 |
200–220 HV |
15 |
| 5*Class A |
130 |
895 |
120 |
828 |
30–39 HRC |
10 |
| 5*Class B |
130 |
895 |
120 |
828 |
30–39 HRC |
10 |
| 7 |
50 |
345 |
40 |
275 |
160–180 HV |
20 |
| 19 |
120 |
793 |
115 |
759 |
24–38 HRC |
15 |
| 23 |
120 |
828 |
110 |
759 |
25–36 HRC |
10 |
| 32 |
100 |
690 |
85 |
585 |
24–38 HRC |
10 |
*Mechanical properties of titanium & titanium alloy bolts, screws, and studs in accordance with ASTM F468 / F468M.
*Both Class A and Class B of Titanium Gr.5 require wedge tensile testing.
*The tensile & yield strength and elongation shall be based on machined specimen tests.
