Titanium Grade 9 Bar | Ti-3Al-2.5V UNS R56320

1. Primary Product Standard: ASTM B348/B348M-25 — Standard Specification for Titanium and Titanium Alloy Bars and Billets.

2. Material Designation: Titanium Grade 9, Ti-3Al-2.5V, UNS R56320.

3. Product Scope: Annealed titanium-alloy bars and billets supplied in accordance with the applicable edition of ASTM B348/B348M and the purchase order.

4. Standard Requirements: Chemical composition, tensile properties, dimensions, tolerances, workmanship, marking, sampling, testing, and certification shall follow the governing product standard.

5. Specification Boundary: SAE AMS4943 is a seamless hydraulic-tubing specification and should not be listed as the governing standard for a Grade 9 bar order.

6. Additional Requirements: Aerospace, automotive, marine, or customer-specific requirements can be reviewed only when they are explicitly stated in the RFQ and contractually confirmed.

1. Grade: Titanium Grade 9.

2. UNS Designation: UNS R56320.

3. Nominal Alloy Description: Ti-3Al-2.5V, a medium-strength alpha-beta titanium alloy with useful cold-forming and welding capability.

4. Product Forms: Round bar, rod, billet, cut-to-length pieces, machining blanks, and drawing-controlled solid components within the confirmed capability.

5. Supply Condition: Annealed under ASTM B348/B348M unless another condition is governed by a separate agreed specification.

6. Grade Selection: Grade 9 should not be treated as automatically interchangeable with Grade 2, Grade 5, Grade 18, or another titanium designation.

Reference limits for ASTM Grade 9 / UNS R56320; the current standard and Material Test Certificate control final acceptance:

1. Aluminum (Al): 2.5–3.5

2. Vanadium (V): 2.0–3.0

3. Iron (Fe): ≤0.25

4. Oxygen (O): ≤0.15

5. Carbon (C): ≤0.08

6. Nitrogen (N): ≤0.03

7. Hydrogen (H): ≤0.015

8. Residual Elements (each): ≤0.10

9. Residual Elements (total): ≤0.40

10. Titanium (Ti): Balance

Grade 18 contains an additional palladium range and is a separate material designation; it should not be represented as Grade 9.

1. Producer reference data for annealed Ti-3Al-2.5V list minimum room-temperature values of approximately 620 MPa tensile strength, 483 MPa yield strength, 15% elongation, and 30% reduction of area.

2. Mechanical-property requirements may vary with product size, specimen orientation, test method, and the applicable purchase specification.

3. Tensile results shall be linked to the supplied heat or lot and reported on the Material Test Certificate.

4. Hardness, fatigue strength, impact energy, fracture toughness, and elevated-temperature performance should not be assigned as universal Grade 9 bar acceptance values unless contractually specified.

5. Raw-bar properties do not independently establish allowable design stress, component life, crash performance, or final-part approval.

The following values are typical references and are not ASTM B348 product-acceptance limits:

1. Density: approximately 4.48 g/cm³.

2. Beta Transus: approximately 935 ±15°C.

3. Melting or Liquidus Temperature: approximately 1700°C.

4. Thermal Conductivity: approximately 8.3 W/m·K at room temperature.

5. Mean Thermal Expansion Coefficient: approximately 9.61 µm/m·°C from room temperature to about 95°C.

6. Young’s Modulus: approximately 95–105 GPa at room temperature.

7. Poisson’s Ratio: typically about 0.30.

Actual values vary with product direction, temperature, chemistry, microstructure, heat treatment, and manufacturing history.

1. Grade 9 generally provides substantially higher strength than commercially pure Grade 2 while retaining better forming capability than Grade 5.

2. Grade 5 normally offers higher strength, but machining, forming, heat-treatment, and qualification requirements may differ.

3. Grade 2 may be preferred where maximum formability or specific corrosion-service experience is more important than increased strength.

4. Grade 9 is not automatically the lowest-cost option after raw-material price, machining, tooling, joining, qualification, scrap, inspection, and production volume are considered.

5. Material selection should be based on the final component geometry, loading, environment, service temperature, manufacturing route, joining method, and required life.

1. Diameter: Project-specific diameters are available subject to manufacturing route, material availability, quantity, surface finish, and required tolerance.

2. Length: Standard mill lengths and custom cut lengths can be reviewed according to the purchase order and transport limitations.

3. Dimensional Basis: Diameter, length, straightness, out-of-roundness, cut-end condition, and surface requirements shall follow ASTM B348/B348M unless tighter requirements are agreed in writing.

4. Custom Tolerances: Tighter tolerances require a feasibility review covering bar size, length, finish, machining allowance, inspection method, measurement uncertainty, and sampling.

5. Drawing Review: Buyers should provide the finished component drawing or required machining allowance when dimensional control is critical.

6. Precision Supply: Peeled, turned, or centerless-ground bars should be evaluated separately because achievable tolerance, finish, cost, and lead time differ.

1. ASTM B348 annealed material may be supplied in descaled, sandblasted, ground, or rough-turned condition, subject to the standard and order requirements.

2. Additional surface options can include peeled, turned, centerless ground, or polished finishes when technically feasible.

3. Saw cutting, facing, chamfering, turning, drilling, threading, and CNC machining can be reviewed against customer drawings.

4. Surface roughness must be defined by parameter, measurement direction, method, sampling plan, and acceptance limit.

5. Surface repair or blending shall not reduce the bar below the agreed dimensional limits or leave defects that violate the product standard.

1. Ti-3Al-2.5V generally requires rigid workholding, sharp tools, controlled cutting speed, suitable feed, and adequate non-chlorinated coolant.

2. Low thermal conductivity can concentrate heat at the cutting edge and accelerate tool wear if cutting conditions are poorly controlled.

3. Machining allowance should consider bar tolerance, straightness, scale removal, chucking, distortion, and the final inspection method.

4. Threads, small radii, thin sections, deep holes, and fatigue-sensitive surfaces may require special process planning and inspection.

5. Finished-part machining parameters should be qualified by the component manufacturer rather than treated as universal Grade 9 settings.

1. ASTM B348 Grade 9 bar is generally supplied in the annealed condition.

2. Producer reference data identify stress-relieving, annealing, solution-treatment, and ageing ranges, but these should not be applied as universal instructions for every bar size or final component.

3. Heat treatment influences tensile properties, ductility, residual stress, fatigue behaviour, microstructure, and dimensional stability.

4. Forging, solution treatment, ageing, stress relief, or post-machining heat treatment should follow a qualified procedure matched to the component and required final properties.

5. Unapproved reheating or processing may prevent the finished part from retaining the properties reported for the original bar.

1. Grade 9 offers a useful combination of strength and formability, but achievable deformation depends on size, condition, grain structure, tooling, temperature, strain rate, and direction.

2. A universal cold-heading ratio, bend radius, expansion limit, or forming method should not be promised without representative trials.

3. Hot forming and forging temperatures, reductions, finishing temperatures, and cooling practice must be controlled to avoid undesirable microstructure or contamination.

4. Cold working increases strength and residual stress while reducing remaining ductility.

5. First-article trials and final-property verification are recommended for new forging, heading, thread-rolling, or forming routes.

1. Ti-3Al-2.5V can be welded using qualified titanium welding procedures when surfaces and shielding are properly controlled.

2. The weld pool and adjacent heated surfaces require effective protection from oxygen, nitrogen, and hydrogen.

3. Weld properties depend on joint design, filler, heat input, shielding, base-metal condition, contamination control, and post-weld processing.

4. Mechanical fastening, press fitting, brazing, adhesive bonding, or another joining method must be validated for the actual component.

5. ASTM B348 bar certification does not approve a finished welded or assembled automotive component.

1. Standard Verification: Chemical composition, tensile properties, dimensions, surface condition, workmanship, marking, and documentation according to the governing specification.

2. Optional PMI: Positive Material Identification can be arranged when required to verify material identity.

3. Optional Ultrasonic Testing: UT can be arranged when a suitable method, reference standard, coverage, sensitivity, and acceptance criteria are specified.

4. Optional Hardness Testing: Hardness testing can be added when technically relevant and contractually required.

5. Dimensional Report: Diameter, length, straightness, surface condition, and other agreed characteristics can be documented.

6. Third-Party Inspection: Independent inspection can be coordinated at agreed hold or witness points.

7. Testing Boundary: “100% NDT” is incomplete unless the exact method, calibration, coverage, sensitivity, sampling, and rejection criteria are defined.

1. Material Test Certificate with heat-specific chemistry and mechanical properties.

2. Heat and lot identification linked to product labels, inspection records, packing list, and certification package.

3. EN 10204 3.1 documentation when specified in the contract.

4. Dimensional, PMI, UT, hardness, or third-party inspection reports when ordered.

5. Product form, grade, UNS designation, standard, condition, size, heat number, and quantity identified on the release documents.

6. Automotive PPAP, control plans, capability studies, first-article reports, or customer-specific submissions are available only when specifically agreed and supported by the approved manufacturing route.

Grade 9 bar may be evaluated for selected high-performance, motorsport, prototype, premium, or weight-sensitive vehicle components where titanium provides a justified system-level advantage.

Possible screening areas include fasteners, shafts, pins, spacers, fittings, brackets, links, mounting hardware, custom-machined connectors, and other drawing-controlled solid components.

It should not be presented as the universal or lowest-cost material for mass-market brake systems, steering systems, crash structures, suspension parts, fuel systems, or safety-critical hardware.

Each application requires validation of static strength, fatigue, impact, wear, temperature, corrosion, galvanic interaction, joining, manufacturability, repair, regulatory requirements, and vehicle-level qualification.

Ti-3Al-2.5V is established in aerospace tubing and lightweight structures, but bar applications must follow the exact aerospace or customer material specification required by the drawing.

Possible bar-derived parts include fittings, pins, shafts, brackets, fasteners, and precision-machined hardware where Grade 9 is specifically permitted.

An ASTM B348 Grade 9 bar order does not automatically satisfy an AMS specification, aircraft-prime specification, approved-source requirement, or finished-part qualification.

Grade 9 bar may be considered for selected marine, industrial, pressure-equipment, and consumer applications requiring a combination of low density, moderate strength, formability, and titanium corrosion resistance.

Possible uses include shafts, pins, fittings, fasteners, instrument components, bicycle parts, sporting equipment, and custom-machined hardware.

Material selection must still consider galvanic coupling, crevice geometry, hydrogen exposure, wear, mechanical loading, fatigue, temperature, contaminants, and the complete service environment.

1. Precision-machined fittings, connectors, pins, shafts, and spacers.

2. Lightweight fasteners, studs, bolts, nuts, and drawing-controlled hardware.

3. Automotive and motorsport brackets, links, mounts, and custom components after project qualification.

4. Aerospace and marine machining blanks where the governing specification permits ASTM Grade 9.

5. Bicycle, sporting-equipment, and industrial components requiring a balance of strength and manufacturability.

Application examples are preliminary screening references and do not replace customer or engineering approval.

1. Cut-to-length supply and controlled end preparation.

2. Peeling, rough turning, centerless grinding, and polishing subject to dimensional and surface requirements.

3. Facing, chamfering, drilling, threading, and CNC machining according to approved drawings.

4. Dimensional inspection and first-article documentation.

5. Component assembly or additional processing only when drawings, process requirements, inspection, and responsibility boundaries are agreed.

1. Bars can be bundled, wrapped, or packed in export wooden cases according to diameter, length, quantity, finish, and transport method.

2. Protective separators, moisture-resistant wrapping, and end protection can be added when required.

3. Ground or polished bars can receive additional protection against rubbing and scratching.

4. Different heats, lots, sizes, and conditions can be separated and clearly identified.

5. Product labels can include grade, UNS number, standard, condition, size, heat number, lot number, quantity, and purchase-order reference.

1. More than 20 years of alloy-material production and export experience.

2. Supply support for standard and project-specific titanium bar requirements.

3. Review of grade, standard, size, tolerance, finish, machining, inspection, documentation, and packing before quotation.

4. Material traceability and inspection documentation according to agreed purchase requirements.

5. PMI, ultrasonic, dimensional, surface, mechanical, and third-party inspection support when specified and technically applicable.

6. Cutting, finishing, machining coordination, and export packaging services subject to a feasibility review.

7. Direct communication for drawings, specifications, application conditions, delivery requirements, and quotation clarification.

For an accurate quotation, please provide:

1. Titanium Grade 9, Ti-3Al-2.5V, and UNS R56320 confirmation.

2. ASTM B348/B348M edition and any additional customer or project specification.

3. Bar diameter, length, quantity, and unit of measurement.

4. Annealed condition or another separately specified condition.

5. Diameter, length, straightness, out-of-roundness, and surface-finish requirements.

6. Required machining allowance or finished-component drawing.

7. PMI, UT, hardness, dimensional, first-article, PPAP, or third-party documentation requirements.

8. Marking, packaging, destination, Incoterms, and required delivery date.

9. Loading, temperature, environment, wear, fatigue, joining, and failure consequence when technical review is requested.

What is Titanium Grade 9 bar?
It is Ti-3Al-2.5V titanium-alloy bar identified as UNS R56320 and supplied under ASTM B348/B348M when that standard is specified.

Does AMS4943 apply to Grade 9 bar?
No. AMS4943 is a seamless hydraulic-tubing specification. Grade 9 bar requires a bar or billet specification such as ASTM B348/B348M unless another applicable bar specification is ordered.

How does Grade 9 compare with Grade 2 and Grade 5?
Grade 9 generally provides higher strength than Grade 2 and better forming capability than Grade 5, but final selection depends on the complete component and manufacturing requirements.

Can Grade 9 bar be used for automotive fasteners or suspension parts?
Only after the finished component has been designed, manufactured, tested, and validated for the applicable static, fatigue, impact, wear, joining, corrosion, and vehicle-level requirements.

Can custom sizes and machining be supplied?
Custom diameters, lengths, finishes, tolerances, and machining can be reviewed, but feasibility depends on material availability, tooling, quantity, inspection, and the approved manufacturing route.

Which documents are available?
Material Test Certificates, heat and lot traceability, EN 10204 3.1 documentation, and ordered inspection reports can be supplied according to the contract.