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Product Overview
Titanium Grade 1 bolts are precision fasteners manufactured from commercially pure titanium (UNS R50250), conforming to ASTM B348 and ASTM F67 standards. As the softest and most ductile of all titanium grades, Grade 1 offers exceptional corrosion resistance, outstanding formability, and a high strength-to-weight ratio, making it ideal for critical bolted joints in aggressive chemical and marine environments.
With a density of just 4.51 g/cm³ and a minimum tensile strength of 240 MPa, Titanium Grade 1 bolts are widely specified for applications where weight savings, biocompatibility, and immunity to chloride-induced corrosion are paramount. All fasteners are supplied with full traceability and EN 10204 3.1 certification.
| Material | Titanium Grade 1 |
| UNS Number | R50250 |
| DIN Number | 3.7025 |
| Material Standard | ASTM B348 / ASTM F67 |
| Bolt Standard (Metric) | DIN 931 / DIN 933 / ISO 4014 |
| Bolt Standard (Inch) | ASME B18.2.1 |
| Thread Form | ISO Metric / UNC / UNF |
| Diameter Range | M6-M64 / ¼"-2½" |
| Tensile Strength | 240 MPa (35 ksi) min |
| Yield Strength | 170 MPa (25 ksi) min |
| Hardness | Max 80 HRB / 160 HB |
Complete the Fastener Set
Technical Data
| Size (M) | Pitch (mm) | A/F (mm) | Head Ht (mm) | Min L (mm) | Max L (mm) |
|---|---|---|---|---|---|
| M6 | 1.0 | 10 | 4.0 | 10 | 200 |
| M8 | 1.25 | 13 | 5.3 | 12 | 250 |
| M10 | 1.5 | 17 | 6.4 | 16 | 300 |
| M12 | 1.75 | 19 | 7.5 | 20 | 400 |
| M16 | 2.0 | 24 | 10.0 | 25 | 500 |
| M20 | 2.5 | 30 | 12.5 | 30 | 600 |
| M24 | 3.0 | 36 | 15.0 | 40 | 600 |
| M30 | 3.5 | 46 | 18.7 | 50 | 800 |
| M36 | 4.0 | 55 | 22.5 | 60 | 1000 |
| M42 | 4.5 | 65 | 26.0 | 80 | 1000 |
| M48 | 5.0 | 75 | 30.0 | 100 | 1200 |
| M56 | 5.5 | 85 | 35.0 | 120 | 1500 |
| M64 | 6.0 | 95 | 40.0 | 140 | 2000 |
| Standard | Covers | Thread |
|---|---|---|
| DIN 931 | Hex bolts, partial thread | Metric |
| DIN 933 | Hex bolts, full thread | Metric |
| ISO 4014 | Hex head screws, partial | Metric |
| ISO 4017 | Hex head screws, full | Metric |
| ASME B18.2.1 | Hex & heavy hex bolts | UNC/UNF |
| ASME B16.5 | Stud bolts for flanges | UNC |
| Material Standard | Requirement |
|---|---|
| ASTM B348 | Bar/rod - UNS R50250 |
| ASTM F67 | Unalloyed titanium fasteners |
| EN 10204 3.1 | Mill test certificate |
| EN 10204 3.2 | TPI-witnessed MTC |
Material Chemistry
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Oxygen (O) | 0.18% max |
| Carbon (C) | 0.08% max |
| Nitrogen (N) | 0.03% max |
| Hydrogen (H) | 0.015% max |
| Iron (Fe) | 0.20% max |
| Other Elements (each) | 0.10% max |
| Other Elements (total) | 0.40% max |
Fastener Performance
| Bolt Size | Dry (Nm) | Lubricated (Nm) | Clamp Load (kN) |
|---|---|---|---|
| M12 | 32 | 26 | 10 |
| M16 | 65 | 52 | 18 |
| M20 | 130 | 104 | 28 |
| M24 | 220 | 176 | 41 |
| M30 | 420 | 336 | 66 |
| M36 | 720 | 576 | 95 |
| M42 | 1100 | 880 | 135 |
| M48 | 1600 | 1280 | 185 |
Industry Applications
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