Grade 2 Titanium Carriage Bolts
Commercially pure Grade 2 titanium carriage bolts with round heads and square necks for corrosion-resistant joints. Geometry, thread, length, finish and inspection follow the specified standard or drawing.
- Material
- Grade 2 / UNS R50400
- Head & Neck
- Round head, square neck
- Threads
- Metric, UNC, UNF or drawing
- Documents
- MTC, dimensions and traceability
Product Detail
Product Introduction
Grade 2 titanium carriage bolts combine commercially pure titanium corrosion resistance with a domed head and square neck intended to resist rotation in a compatible joint. Define the head and neck geometry, mating hole, thread, length, grip, nut, washer, finish, service environment and finished-fastener acceptance requirements.
Product Specifications
| Product | Grade 2 Titanium Carriage Bolts | Material | Titanium Grade 2 (UNS R50400) |
|---|---|---|---|
| Product Form | Standard or drawing-specific titanium fastener | Typical Inquiry Range | Metric, inch and custom sizes confirmed at RFQ stage |
| Dimensional References | Expressly invoked standard or approved drawing | Threads / Dimensions | Metric coarse or fine, UNC, UNF or drawing-specific as applicable |
| Surface | Machined and cleaned; lubricant, anti-galling treatment or coating by agreement | Documents | MTC, heat/lot traceability and dimensional inspection report |
| Inspection | Dimensions, thread gauging, surface and agreed functional or mechanical tests | Supply Basis | Approved purchase order, invoked standard and drawing |
Typical inquiry ranges are not a stock guarantee. Final manufacturability, tolerances and test requirements are confirmed against the complete RFQ.
Selection and Configuration
- Head and neck: Specify round-head diameter and height, square-neck width and depth, transition radii and dimensional reference.
- Joint interface: Verify that the square neck seats correctly and that the mating material can resist installation torque without damage.
- Thread and length: Define metric or inch thread, class of fit, nominal length below the head, grip, threaded length and end form.
Send a drawing or complete fastener definition
Include dimensions, quantity, mating parts, service conditions, finish and inspection requirements.
Chemical Composition – Titanium Grade 2
Maximum weight percent unless shown otherwise; titanium is the balance.
| N max | C max | H max | Fe max | O max | Residual each / total | Ti |
|---|---|---|---|---|---|---|
| 0.03 | 0.08 | 0.015 | 0.30 | 0.25 | 0.10 / 0.40 | Balance |
Mechanical Properties – Grade 2 Material Reference
| Property | Annealed Grade 2 Material Reference Minimum |
|---|---|
| Ultimate tensile strength | 345 MPa (50 ksi) |
| 0.2% yield strength | 275 MPa (40 ksi) |
| Elongation | 20% |
Material values do not automatically establish finished-fastener loadability. Finished-part acceptance depends on geometry, manufacturing route, condition and the expressly invoked fastener specification or drawing.
Typical Physical Properties
| Property | Typical Value |
|---|---|
| Density | 4.51 g/cm³ |
| Elastic modulus | Approximately 105 GPa |
| Poisson ratio | Approximately 0.34 |
| Thermal conductivity | Approximately 16.4 W/m·K |
| Coefficient of thermal expansion | Approximately 8.6 µm/m·K |
| Melting point | Approximately 1668°C |
Physical values are typical engineering references and are not inspection acceptance limits.
Certificates & Inspection Records
Services We Can Provide
Product Packaging
Grade 2 Titanium Carriage Bolts are separated by size and lot, protected against thread and surface damage, and labeled with grade, dimensions, quantity and traceability reference. Inner bags, cartons and export cases are selected according to product geometry, quantity and shipping method.
Application Scenarios
Chemical Processing
Corrosion-resistant equipment joints selected against the complete process environment.
Power & Energy
Lightweight engineered assemblies requiring controlled dimensions and traceability.
Marine & Shipbuilding
Corrosion-resistant joints subject to galvanic, preload and service-condition review.
FAQ
What stops a Grade 2 titanium carriage bolt from rotating?
The square neck must seat in a compatible square hole or material capable of restraining rotation. Hole geometry, material strength and installation torque must be verified.
Does DIN 603 define the titanium material?
No. It may serve as a dimensional reference, while Grade 2 material, condition, tests and documentation must be stated separately.
What should an RFQ include?
Provide grade, standard or drawing, head and neck dimensions, thread, length, quantity, mating parts, finish, service conditions and certificates.
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