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Product Overview
Titanium Grade 7 threaded rods are corrosion-resistant fasteners manufactured from titanium alloy UNS R52400, which is essentially Grade 2 titanium stabilized with a small addition of palladium (0.12-0.25%). This addition dramatically enhances resistance to crevice corrosion and pitting in strong acids and chloride-bearing environments. Titanium Grade 7 threaded rods are produced to ASTM B348 and ASTM B381 standards, offering excellent weldability, ductility, and mechanical strength for critical chemical processing and marine applications.
These rods are widely specified for use in highly corrosive environments such as chlorine dioxide bleaching plants, desalination, and chemical reactors, where standard titanium or stainless steel fasteners would fail. Grade 7s unique combination of mechanical properties and corrosion resistance makes it the preferred choice for threaded rod applications in the harshest industrial conditions.
| Material | Titanium Grade 7 |
| UNS Number | R52400 |
| DIN Number | 3.7235 |
| Material Standard | ASTM B348 |
| Rod Standard (Metric) | DIN 976 / ISO 898-1 |
| Rod Standard (Inch) | ASME B18.31.3 |
| Thread Form | ISO Metric / UNC / UNF |
| Diameter Range | M6-M64 / ¼"-2½" |
| Tensile Strength | 345 MPa (50 ksi) min |
| Yield Strength | 275 MPa (40 ksi) min |
| Hardness | Max 160 HB |
Complete the Fastener Set
Technical Data
| Size (M) | Pitch (mm) | Core Dia (mm) | Length Range (mm) |
|---|---|---|---|
| M6 | 1.0 | 4.8 | 100-2000 |
| M8 | 1.25 | 6.6 | 100-2500 |
| M10 | 1.5 | 8.2 | 100-3000 |
| M12 | 1.75 | 9.9 | 100-3000 |
| M16 | 2.0 | 13.3 | 100-4000 |
| M20 | 2.5 | 16.6 | 100-4000 |
| M24 | 3.0 | 20.0 | 100-4000 |
| M30 | 3.5 | 25.0 | 200-4000 |
| M36 | 4.0 | 31.0 | 200-4000 |
| M42 | 4.5 | 36.0 | 200-4000 |
| M48 | 5.0 | 41.0 | 200-4000 |
| M56 | 5.5 | 48.0 | 200-4000 |
| M64 | 6.0 | 55.0 | 200-4000 |
| Standard | Covers | Thread |
|---|---|---|
| DIN 976 | Threaded rods, metric | Metric |
| ISO 898-1 | Mechanical properties | Metric |
| ASME B18.31.3 | Threaded rods, inch | UNC/UNF |
| ISO 261 | General metric threads | Metric |
| ISO 965 | Thread tolerances | Metric |
| Material Standard | Requirement |
|---|---|
| ASTM B348 | Bar/rod - UNS R52400 |
| ASTM B381 | Forged components |
| ASME SB-348 | Seamless rods |
| EN 10204 3.1 | Mill test certificate |
| EN 10204 3.2 | TPI-witnessed MTC |
Material Chemistry
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Palladium (Pd) | 0.12-0.25 |
| Iron (Fe) | 0.30 max |
| Oxygen (O) | 0.25 max |
| Carbon (C) | 0.08 max |
| Nitrogen (N) | 0.03 max |
| Hydrogen (H) | 0.015 max |
| Other Elements (each) | 0.10 max |
| Other Elements (total) | 0.40 max |
Fastener Performance
| Rod Size | Dry (Nm) | Lubricated (Nm) | Clamp Load (kN) |
|---|---|---|---|
| M12 | 38 | 30 | 18 |
| M16 | 90 | 72 | 32 |
| M20 | 180 | 144 | 50 |
| M24 | 310 | 248 | 72 |
| M30 | 620 | 496 | 115 |
| M36 | 1100 | 880 | 165 |
| M42 | 1750 | 1400 | 220 |
| M48 | 2600 | 2080 | 285 |
Industry Applications
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