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Product Overview
Titanium Grade 9 screws are high-performance fasteners manufactured from a titanium alloy containing 3% aluminum and 2.5% vanadium (UNS R56320). This alpha-beta alloy, also known as Ti-3Al-2.5V, offers a unique combination of moderate strength, excellent corrosion resistance, and superior weldability. Titanium Grade 9 screws are widely specified for critical applications where weight savings, seawater resistance, and non-magnetic properties are essential.
Conforming to ASTM B348 and ASTM F467, Titanium Grade 9 screws are used in aerospace, marine, chemical processing, and high-performance automotive assemblies. Their strength-to-weight ratio is superior to commercially pure titanium, making them ideal for bolted joints exposed to aggressive environments and cyclic loading.
| Material | Titanium Grade 9 (Ti-3Al-2.5V) |
| UNS Number | R56320 |
| DIN Number | 3.7195 |
| Material Standard | ASTM B348 |
| Screw Standard (Metric) | DIN 912 / DIN 7991 / ISO 4762 |
| Screw Standard (Inch) | ASME B18.3 |
| Thread Form | ISO Metric / UNC / UNF |
| Diameter Range | M3-M36 / 1/8"-1 1/2" |
| Tensile Strength | 620 MPa (90 ksi) min |
| Yield Strength | 483 MPa (70 ksi) min |
| Hardness | Max 250 HV |
Complete the Fastener Set
Technical Data
| Size (M) | Pitch (mm) | Head Dia (mm) | Head Ht (mm) | Hex Socket (mm) | Min L (mm) | Max L (mm) |
|---|---|---|---|---|---|---|
| M3 | 0.5 | 5.5 | 3.0 | 2.5 | 6 | 50 |
| M4 | 0.7 | 7.0 | 4.0 | 3.0 | 8 | 60 |
| M5 | 0.8 | 8.5 | 5.0 | 4.0 | 10 | 70 |
| M6 | 1.0 | 10.0 | 6.0 | 5.0 | 12 | 80 |
| M8 | 1.25 | 13.0 | 8.0 | 6.0 | 16 | 100 |
| M10 | 1.5 | 16.0 | 10.0 | 8.0 | 20 | 120 |
| M12 | 1.75 | 18.0 | 12.0 | 10.0 | 25 | 150 |
| M16 | 2.0 | 24.0 | 16.0 | 14.0 | 30 | 200 |
| M20 | 2.5 | 30.0 | 20.0 | 17.0 | 35 | 250 |
| M24 | 3.0 | 36.0 | 24.0 | 19.0 | 40 | 300 |
| M30 | 3.5 | 45.0 | 30.0 | 22.0 | 50 | 400 |
| M36 | 4.0 | 54.0 | 36.0 | 27.0 | 60 | 500 |
| Standard | Covers | Thread |
|---|---|---|
| DIN 912 | Socket head cap screws | Metric |
| DIN 7991 | Countersunk socket screws | Metric |
| ISO 4762 | Hex socket screws | Metric |
| ASME B18.3 | Socket cap, flat, button head | UNC/UNF |
| ISO 14580 | Low head socket screws | Metric |
| ISO 7380 | Button head socket screws | Metric |
| Material Standard | Requirement |
|---|---|
| ASTM B348 | Bar/rod - UNS R56320 |
| ASTM F467 | Fastener mechanical |
| AMS 4955 | Aerospace bar/rod |
| EN 10204 3.1 | Mill test certificate |
| EN 10204 3.2 | TPI-witnessed MTC |
Material Chemistry
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Aluminum (Al) | 2.5-3.5 |
| Vanadium (V) | 2.0-3.0 |
| Iron (Fe) | 0.25 max |
| Oxygen (O) | 0.13 max |
| Carbon (C) | 0.08 max |
| Nitrogen (N) | 0.05 max |
| Hydrogen (H) | 0.015 max |
| Other Elements | 0.40 max (total) |
Fastener Performance
| Screw Size | Dry (Nm) | Lubricated (Nm) | Clamp Load (kN) |
|---|---|---|---|
| M6 | 10 | 8 | 7.5 |
| M8 | 25 | 20 | 13.5 |
| M10 | 50 | 40 | 21.5 |
| M12 | 85 | 68 | 31.5 |
| M16 | 210 | 168 | 54.5 |
| M20 | 410 | 328 | 84.5 |
Industry Applications
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