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| Specification | Value |
|---|---|
| UNS Number | R50250 |
| ASTM/ASME Standard | ASTM F67 / ASME SB-348 |
| Tensile Strength | 240 MPa (min) |
| Yield Strength | 170 MPa (min) |
| Density | 4.51 g/cm³ |
| Max Service Temperature | 430°C |
| Element | Composition (%) |
|---|---|
| Ti | balance |
| O | ≤0.18% |
| N | ≤0.03% |
| C | ≤0.08% |
| H | ≤0.015% |
| Fe | ≤0.20% |
Titanium Grade 1 is a commercially pure titanium containing minimal alloying additions, with only trace amounts of iron, oxygen, carbon, nitrogen and hydrogen controlling its mechanical behaviour. Oxygen and iron content are kept lower than in Grade 2, resulting in the softest and most ductile grade among commercially pure titanium variants. This low interstitial content enhances formability and cold workability, making it ideal for parts requiring extensive bending or forming while maintaining excellent toughness at cryogenic and moderate temperatures.
The high purity of Titanium Grade 1 provides outstanding corrosion resistance in chloride environments, seawater and oxidising acids due to a stable, self-healing titanium oxide layer. Its excellent weldability, biocompatibility and low density make it highly suitable for fasteners used in marine, chemical processing, medical and architectural applications. Although it offers lower strength than higher grades, its superior ductility and corrosion performance make it the preferred choice where formability and long-term durability outweigh high-strength requirements.
Specifications
Titanium Grade 1 Fasteners offer excellent corrosion resistance, low density, and dependable mechanical performance for critical assemblies. Their specifications cover dimensional tolerances, thread accuracy, and material properties suited to lightweight, high-strength service, with technical data typically aligned to industry requirements for consistent fit and function.
| Property | Value |
|---|---|
| Tensile Strength | 240 MPa (min) |
| Yield Strength | 170 MPa (min) |
| Elongation | 24% min |
| Hardness | 120 HB max |
| Modulus of Elasticity | 102.7 GPa |
| Thermal Conductivity | 16.4 W/m·K |
| Density | 4.51 g/cm³ |
| Melting Range | 1660–1680°C |
| Max Service Temperature | 430°C |
| Standard | Details |
|---|---|
| Bolt Standard | ASME B18.2.1, DIN 931/933 |
| Stud Bolt Standard | ASME B18.31.3 |
| Nut Standard | ASME B18.2.2, DIN 934 |
| Washer Standard | ASME B18.21.1, DIN 125 |
| Thread Form | UNC, UNF, Metric Coarse/Fine |
| Diameter Range | M3 – M64 / 1/8" – 2.5" |
| Length Range | 10mm – 300mm |
| Available Forms | Bolts, Studs, Nuts, Washers, Screws |
| Custom Sizes | Available on request |
Applications
