Titanium Grade 2 Properties and Chemical Composition – UNS R50400
SEO Title: Titanium Grade 2 Properties and Chemical Composition – UNS R50400
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Secondary Keywords: Titanium Grade 2 chemical composition, UNS R50400 properties, Grade 2 titanium mechanical properties, commercially pure titanium Grade 2, Titanium Grade 2 density, Titanium Grade 2 corrosion resistance, Titanium Grade 2 material specification, 3.7035 titanium
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Meta Description: Explore Titanium Grade 2 properties, chemical composition, mechanical strength, density and corrosion resistance. Learn about UNS R50400 with Manan Steel & Metals.
Table of Contents
- What Is Titanium Grade 2?
- Titanium Grade 2 Chemical Composition
- Titanium Grade 2 Mechanical Properties
- Physical Properties of Titanium Grade 2
- Corrosion Resistance and Industrial Performance
- Titanium Grade 2 vs Titanium Grade 5
- Product Forms and Material Standards
- How to Specify Titanium Grade 2 for Purchase
- Frequently Asked Questions
- Contact Manan Steel & Metals
1. What Is Titanium Grade 2?
Titanium Grade 2 is a commercially pure, unalloyed titanium grade valued for its corrosion resistance, ductility, formability and relatively low density. It is used in selected chemical-processing, marine, industrial fabrication and other engineering applications where these properties are important.
The material is commonly identified by the following designations:
- Grade: Titanium Grade 2
- UNS number: R50400
- Material number: 3.7035
- Material type: Commercially pure titanium
Unlike titanium alloys that contain deliberate additions of elements such as aluminium and vanadium, Grade 2 is primarily titanium, with controlled limits for elements such as iron, oxygen, carbon, nitrogen and hydrogen.
For buyers and engineers, understanding Titanium Grade 2 properties helps determine whether the material is appropriate for the intended operating environment. The final selection must also account for product form, dimensions, mechanical requirements and the applicable material specification.
Technical reference: Titanium Grade 2 – METALCOR material datasheet.
2. Titanium Grade 2 Chemical Composition
The chemical composition of Titanium Grade 2 is controlled to maintain the material’s required properties. The following table gives commonly referenced maximum limits for the listed elements.
| Element | Typical specification limit, weight % |
|---|---|
| Titanium (Ti) | Balance |
| 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 |
Important: These figures are a general reference for Grade 2 and should not replace the governing material standard. Confirm the limits and reported chemical analysis against the exact product specification and material test certificate supplied with the order.
Why does chemical composition matter?
- Titanium: Forms the primary material matrix and contributes to the grade’s characteristic corrosion resistance.
- Iron and oxygen: Their controlled amounts influence the material’s strength and other properties.
- Carbon and nitrogen: These interstitial elements must remain within specified limits.
- Hydrogen: Its content is controlled because excessive hydrogen can adversely affect titanium’s performance.
For procurement, a grade name alone is not enough to demonstrate compliance. Buyers should verify the chemical analysis and traceability documentation when required by the purchase order.
3. Titanium Grade 2 Mechanical Properties
Titanium Grade 2 provides a combination of strength and ductility that makes it suitable for a variety of formed and fabricated components.
The following are commonly referenced room-temperature minimum values for Grade 2 material under relevant product specifications. Actual requirements vary by product form, dimensions and governing standard.
| Mechanical property | Common reference value |
|---|---|
| Minimum tensile strength | 345 MPa |
| Minimum 0.2% yield strength | 275 MPa |
| Minimum elongation | 20% |
| Approximate elastic modulus | 105 GPa |
These values are for general orientation, not a substitute for the requirements of the specific material standard or supplied condition. The applicable specification may define different requirements depending on product form and dimensions.
Tensile strength
Tensile strength describes the maximum tensile stress a material withstands during a tensile test. It is important when assessing the loads that a component may experience.
Yield strength
Yield strength indicates the stress at which permanent deformation begins under the defined test method. It is an important input in component design.
Elongation and ductility
Elongation is a measure of deformation during a tensile test. Titanium Grade 2’s ductility can be beneficial in forming and fabrication applications, subject to the material condition and process.
Elastic modulus
The elastic modulus describes stiffness in the elastic region. Titanium has a lower elastic modulus than many steels, which can influence component deflection and design calculations.
Engineering note: Do not use generic online property values as final design allowables. Confirm the applicable specification, material condition and relevant design code.
4. Physical Properties of Titanium Grade 2
Titanium Grade 2 is also recognised for its relatively low density compared with many conventional engineering metals.
| Physical property | Approximate value |
|---|---|
| Density | 4.51 g/cm³ |
| Density in SI units | 4,510 kg/m³ |
| Elastic modulus | 105 GPa |
| Material structure at room temperature | Alpha titanium |
Physical-property values can vary slightly between references and measurement conditions. Use the values required by the relevant engineering design or technical documentation.
Why does density matter?
The density of Titanium Grade 2 is significantly lower than that of common steels. This can help reduce component weight where the material’s mechanical and corrosion properties meet the application requirements.
However, lower density alone does not establish that titanium is the most economical or suitable material. The design must also consider strength, stiffness, manufacturing, service conditions and total component cost.
5. Corrosion Resistance and Industrial Performance
Corrosion resistance is one of the main reasons Titanium Grade 2 is considered for demanding industrial applications.
Chemical-processing equipment
Grade 2 may be suitable for selected process equipment and components exposed to compatible chemicals. Suitability depends on the chemical species, concentration, temperature, pressure and exposure conditions.
Marine and chloride-containing environments
Titanium Grade 2 is considered for certain marine and chloride-containing environments because of its protective oxide film and corrosion resistance. The actual performance depends on the environment, flow conditions, crevices, deposits and other service factors.
Industrial fabrication
Its corrosion resistance and formability can make Grade 2 useful for selected fabricated components. The required welding, forming and inspection procedures should be established for the particular application.
Limits of corrosion resistance
No material should be described as universally corrosion-proof. Some chemical environments can attack titanium, and service conditions can affect its performance.
Before specifying Titanium Grade 2, engineers should verify material compatibility for the actual process conditions and consult appropriate technical guidance.
6. Titanium Grade 2 vs Titanium Grade 5
Titanium Grade 2 and Grade 5 serve different material requirements and should not be treated as interchangeable.
| Feature | Titanium Grade 2 | Titanium Grade 5 |
|---|---|---|
| Material classification | Commercially pure titanium | Titanium alloy |
| UNS designation | R50400 | R56400 |
| Common material number | 3.7035 | 3.7165 |
| Main composition | Titanium with controlled residual elements | Titanium alloyed primarily with aluminium and vanadium |
| General characteristic | Corrosion resistance and ductility | Higher strength after suitable processing and heat treatment |
| Typical selection consideration | Corrosion and forming requirements | Strength-to-weight and mechanical loading requirements |
The better choice depends on the component’s design, environment, loading, manufacturing process and applicable standard. A grade substitution should be approved by the responsible engineer.
7. Product Forms and Material Standards
Titanium Grade 2 can be specified in different product forms, each with its own requirements.
| Product form | Standard to investigate |
|---|---|
| Bars and billets | ASTM B348/B348M |
| Sheet, strip and plate | ASTM B265 |
| Seamless pipe | ASTM B861 |
| Welded pipe | ASTM B862 |
| Certain heat-exchanger and condenser tubes | ASTM B338 |
The standards listed above have different scopes. Confirm the current edition and ensure the selected specification covers the exact product form, dimensions and required condition.
Useful references:
- ASTM B348/B348M – Titanium and Titanium Alloy Bars and Billets
- ASTM International – Standards Catalogue
- Titanium Grade 2 Material Datasheet
Depending on the application, buyers may need to specify chemical analysis, mechanical testing, heat or lot traceability, dimensional tolerances and material test certificates.
8. How to Specify Titanium Grade 2 for Purchase
When requesting a Titanium Grade 2 quotation, provide the supplier with the information needed to identify the correct material.
- Material designation: Titanium Grade 2 / UNS R50400.
- Product form: Round bar, plate, sheet, pipe, tube or another required form.
- Dimensions: Diameter, thickness, width, length and tolerances.
- Quantity: Number of pieces or approximate total weight.
- Applicable standard: State the required ASTM or other specification.
- Documentation: Identify any material certificate, traceability or inspection requirements.
- Delivery location: Include the destination and required schedule.
This information helps reduce ambiguity and makes it easier to assess whether a quoted product matches the technical requirement.
Manan Steel & Metals can be contacted to discuss your Titanium Grade 2 requirement and request a quotation, subject to confirmation of product availability, specification and commercial terms.
For related material information, see the Titanium Grade 2 Supplier India article. Confirm that the internal URL matches the published permalink before publishing this article.
9. Frequently Asked Questions
What is the UNS number for Titanium Grade 2?
Titanium Grade 2 is identified by UNS R50400.
What is the chemical composition of Titanium Grade 2?
Titanium forms the balance of the composition, with controlled maximum limits for elements such as iron, oxygen, carbon, nitrogen and hydrogen. Refer to the applicable material specification for the exact limits.
What is the density of Titanium Grade 2?
Its commonly referenced density is approximately 4.51 g/cm³, or 4,510 kg/m³.
What is the tensile strength of Titanium Grade 2?
A commonly referenced minimum tensile strength is 345 MPa, but the actual requirement depends on the product form, dimensions and governing specification.
Is Titanium Grade 2 corrosion-resistant?
It offers corrosion resistance in many environments, including certain chemical-processing and chloride-containing applications. Actual suitability depends on the exact service conditions.
What is the difference between Titanium Grade 2 and Grade 5?
Grade 2 is commercially pure titanium, whereas Grade 5 is a titanium alloy containing aluminium and vanadium. Grade 5 generally offers higher strength, while Grade 2 is selected for different combinations of corrosion resistance, ductility and fabrication requirements.
Which standard applies to Titanium Grade 2 round bar?
ASTM B348/B348M covers specified titanium and titanium alloy bars and billets, including Grade 2 / UNS R50400. Confirm the current edition and exact purchasing requirements.
Where can I enquire about Titanium Grade 2 in India?
Contact Manan Steel & Metals with your required dimensions, quantity and specification to discuss your material requirement and request a quotation.
10. Contact Manan Steel & Metals
Need Titanium Grade 2 for an industrial requirement?
Share your grade, dimensions, product form and quantity with Manan Steel & Metals to discuss your requirement and request a quotation.
Manan Steel & Metals
Address: Shop No. 2, Hira Building, 97 Khetwadi Main Road, Girgaon, Mumbai – 400004, Maharashtra, India
Phone: +91 79773 69869
Email: manansteel@gmail.com
Website: www.manansteel.com
Availability, pricing, delivery schedules and specification compliance must be confirmed for the specific order.
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