Views: 325 Author: Lasting Titanium Publish Time: 2026-10-01 Origin: Site
Content Menu
>> What Is Titanium Strip Coil for Heat Exchanger Fabrication?
>> Titanium Grades for Heat Exchanger Plates: Correct Pairings
>>> Grade 1 and Grade 11: Consider Forming Needs and Service Conditions
>>> Grade 2 and Grade 7: Compare the Base Grade with Its Pd-Modified Counterpart
>>> Grade 12: Treat It as a Separate Alloy Option
>> Titanium Heat-Exchanger Plate Thickness: What the 2007 and 2026 Standards Mean
>>> Why "Thinner" Is Not Automatically Better
>> A Step-by-Step Thickness and Procurement Workflow
>> Corrosion Risks: Conditions That Need Specific Review
>> What to Include in a Titanium Strip Coil Specification
>> Quality Checks Before Shipment and Upon Receipt
>> Common Sourcing Mistakes to Avoid
>> How Shannxi Lasting New Material Can Support Your Sourcing Process
>>> 1. Does "titanium coil for heat exchangers" mean strip coil or finished tubing?
>>> 2. What is the correct pairing for Grades 1, 2, 7, 11, and 12?
>>> 3. What thickness range should I specify for titanium heat-exchanger plates?
>>> 4. Can I use the 2026 GB/T 14845 limits before December 1, 2026?
>>> 5. What information should I send for a titanium strip coil quotation?
>>> 6. Is titanium suitable for hydrofluoric acid or fluoride-containing service?
>>> 7. Does the GB/T 14845 plate size range automatically apply to coil?
>> Conclusion
>> References
Titanium strip coil for heat-exchanger fabrication—feedstock for plate blanks and formed components, not a substitute for finished coil tubing or finished heat-exchanger plates.*
Titanium coil for heat exchangers can refer to two different products: finished coil tubing used in a heat exchanger, or flat titanium strip wound into a coil for further fabrication. This guide covers the second meaning: titanium strip coil feedstock for plate blanks and other formed components. It is not a specification guide for finished heat-exchanger tubes, coil-tube assemblies, or completed plate-and-frame plates.
For manufacturers, brands, and distributors sourcing titanium strip coil, the key decisions are grade, thickness, tolerances, forming requirements, and service environment. These must be matched to the component design, fabrication route, and applicable material specification. This guide supports material selection and procurement; it does not replace design calculations, corrosion assessment, or approval by the responsible engineer.
Titanium strip coil is flat-rolled titanium supplied wound into a coil. Depending on the production route, it can be slit, blanked, stamped, or formed into components. The coil is raw material for fabrication, not a finished heat-exchanger component.
The word *coil* can cause confusion in heat-exchanger searches. In some contexts, "heat-exchanger coil" means a finished tubular assembly. To reduce ambiguity in product listings and purchase documents, use the exact product form—such as titanium strip coil, titanium sheet, titanium plate, or titanium tube—and state whether it is feedstock or a finished part.
Select a grade by considering the process environment, design requirements, and manufacturing route. A key distinction is the relationship between commercially pure titanium grades and their palladium-modified counterparts:
- Grade 1 pairs with Grade 11.
- Grade 2 pairs with Grade 7.
- Grade 12 is a separate alloying route, not a Grade 7 counterpart.
ASTM B265 classifies Grades 7 and 11 as unalloyed titanium with 0.12–0.25% palladium. It identifies Grade 7 as UNS R52400 and Grade 11 as UNS R52250; Grade 12 is listed separately as a titanium alloy containing molybdenum and nickel. [linkedin]
| Grade | Relationship or alloy family | Initial selection consideration |
|---|---|---|
| Grade 1 | Commercially pure titanium | Consider where forming requirements are important; verify design strength and service suitability. |
| Grade 11 | Palladium-modified unalloyed titanium; UNS R52250 | Evaluate with Grade 1 when service and forming requirements support this grade. |
| Grade 2 | Commercially pure titanium | A common candidate for heat-exchanger plate material; verify service and design requirements. |
| Grade 7 | Palladium-modified unalloyed titanium; UNS R52400 | Evaluate with Grade 2; confirm corrosion basis and mechanical requirements. |
| Grade 12 | Titanium alloy containing molybdenum and nickel | Assess separately according to process conditions, design properties, and fabrication needs. |
These pairings are useful for initial screening, not proof that one grade can directly replace another in a specific component. Confirm the required composition, mechanical properties, product form, delivery condition, and corrosion basis with the design authority.
Grade 1 is a commercially pure titanium grade often considered when formability is an important requirement. Grade 11 is its palladium-modified counterpart. For thin, deeply formed components, review grade together with thickness, material condition, tooling, and forming severity.
Do not infer that a grade is suitable solely because it is associated with good formability. The fabricator should confirm that the proposed material can meet the part's geometry and inspection requirements, and the engineer should approve its suitability for the operating environment.
Grade 2 is commercially pure titanium. Grade 7 is the palladium-modified counterpart in this grade pairing. Supplier guidance lists Grade 1 and Grade 2 titanium sheet for plate heat-exchanger applications, but this is a starting point—not a universal grade recommendation. [daxuns]
When considering Grade 7, compare it with Grade 2 and review the application-specific corrosion and mechanical requirements. Verify the material documents against the exact grade and applicable specification before ordering.
Grade 12 contains molybdenum and nickel and is classified separately from the palladium-modified grades in ASTM B265. [linkedin] It should not be described as equivalent to Grade 7. Its suitability must be assessed against the actual process fluid, temperature, component design, forming route, and governing specification.
There is no universal thickness suitable for every heat-exchanger component. The design engineer establishes required thickness under the project's design basis, while the fabricator confirms that the material can be made into the intended part.
It is important to distinguish the historical dimensions in GB/T 14845-2007 from the revised dimensions stated for GB/T 14845-2026. The 2007 edition's commonly cited reference ranges—0.5–1.0 mm thickness, 300–1,000 mm width, and 800–3,000 mm length—are historical, not the expanded dimensional limits described for the 2026 edition. [htnxt] [tialloy]
According to the supplied revision details, GB/T 14845-2026, titled *Titanium Sheet for Plate Heat Exchangers*, was published on May 25, 2026, and is scheduled to take effect on December 1, 2026. Its stated expanded ranges extend to 1.5 mm thickness, 1,800 mm width, and 4,000 mm length. Until its effective date, verify which edition applies to the contract and production timing; once applicable, check the final published standard for exact requirements. Do not treat draft or summary information as a substitute for the standard text.
| Dimension or requirement | GB/T 14845-2007 historical reference | GB/T 14845-2026 stated change | Procurement note |
|---|---|---|---|
| Thickness | 0.5–1.0 mm | Upper limit extended to 1.5 mm | Confirm applicable edition and grade-specific requirements |
| Width | 300–1,000 mm | Extended to 1,800 mm | Confirm availability in the required coil form and tolerance |
| Length | 800–3,000 mm | Extended to 4,000 mm | Distinguish sheet or blank length from coil length |
| Implementation | Previous edition | Effective date stated as Dec. 1, 2026 | Specify the governing edition in the order |
Reported revision details also describe tightened width and length deviations, a flatness limit of ≤3 mm/m, and a new side-edge curvature limit of ≤3 mm/m. For widths and lengths, the cited changes are +5 mm and +10 mm, respectively. Confirm the complete tolerance rules, permitted deviations, and measurement procedures in the official edition before adding them to a purchase order. These figures are not a general guarantee for every grade, thickness, or coil-production route.
Coil-production discussions may cite tighter thickness control, including positive tolerances around +0.03 to +0.04 mm in some cases. Treat those figures as supplier- and specification-specific examples. Request written confirmation of the tolerance, measurement method, sampling plan, and acceptance criteria for the actual order.
Do not transfer sheet dimensions directly to a coil order. For coil stock, specify width, thickness, tolerance, coil weight or length, edge condition, winding and packaging requirements, and—where relevant—the inner and outer diameter required by the processing line.
A thinner material may reduce material use, but it can also affect forming, handling, dimensional stability, and component performance. The actual trade-offs depend on geometry, production process, and design conditions.
The responsible engineer should define the required thickness. The fabricator should then confirm that the chosen thickness and material condition are suitable for the proposed forming and inspection process. Avoid selecting thickness based only on stock availability or price.
1. Identify the component and manufacturing route. State whether the strip will be slit, blanked, stamped, or formed, and identify the component it will become.
2. Document service conditions. Record fluid composition, concentration, normal and upset temperatures, pressure, flow velocity, cleaning chemicals, and operating cycles.
3. Obtain the design requirement. Ask the responsible engineer to define thickness and any allowances under the applicable design basis.
4. Confirm manufacturing feasibility. Have the fabricator review forming severity, strip width, edge condition, coil handling, and relevant surface or joining requirements.
5. Agree inspection and acceptance criteria. Define thickness tolerance, measurement method, sampling plan, surface criteria, and required documentation.
6. Approve the material before production. Check grade, product form, applicable standard and edition, delivery condition, and traceability against the order.
Following this sequence helps prevent a frequent purchasing problem: selecting an available coil gauge before confirming that it satisfies the engineered design and downstream forming requirements.
Titanium is not resistant to every chemical environment under all operating conditions. Hydrofluoric acid and fluoride-containing media require particular attention. Fuming nitric acid, dry chlorine, and anhydrous methanol should also be treated as conditions requiring a specific compatibility review—not assumed safe simply because the material is titanium.
Compatibility depends on the actual process chemistry and operating envelope. Before approving a grade, have a qualified materials or corrosion engineer review:
- Chemistry: Composition, concentration, impurities, and potential contamination.
- Operating conditions: Temperature, pressure, velocity, and aeration.
- Operating cycle: Start-up, shutdown, upset, cleaning, and storage conditions.
- Local conditions: Crevices, deposits, joints, or other features that may change the local environment.
- Risk and evidence: Consequences of leakage, relevant service history, and application-specific test or corrosion data.
For fluoride-containing service or any of the conditions above, do not select a grade using a generic compatibility chart alone. Obtain application-specific technical evidence and engineering approval.
ASTM B265 covers titanium and titanium-alloy strip, sheet, and plate. Use the [ASTM B265 standard page] as a stable reference, and specify the applicable edition in the purchase order. The ASTM B265-20a page lists Grade 7 and Grade 11 palladium content as 0.12–0.25% and distinguishes Grade 12 as a separate alloy. [linkedin]
Before ordering, verify the applicable ASTM edition and any project requirements with the purchaser, supplier, and design authority. A standards citation in an article does not establish which edition governs a particular contract.
Include these details in the RFQ or purchase order:
- Product form: State "titanium strip coil for fabrication" if you need feedstock, not finished tubing or plates.
- Grade and standard: Specify the exact grade, applicable standard, edition, and any supplementary project requirements.
- Dimensions: Give thickness and tolerance, width, coil length or weight, and edge requirements.
- Delivery condition and finish: State the required condition and surface-finish requirements.
- Inspection and documents: List required test records, inspection criteria, and heat or lot traceability.
- Downstream processing: Identify slitting, blanking, forming, joining, or other manufacturing requirements relevant to qualification.
- Commercial details: Set quantity, coil-weight range, packaging, delivery schedule, and export documentation.
For corrosion-critical service or components with strict forming requirements, have the design authority review the proposed grade and material documents before production release.
Quality checks should follow the purchase specification and intended fabrication route. Agree on inspection requirements before production begins; otherwise, buyer and supplier may have different expectations about tolerances, surface condition, documentation, or traceability.
Before accepting the coil, verify:
- Identity: Grade, product form, standard, and applicable edition match the purchase order.
- Traceability: Heat or lot identification connects the coil to its material documents.
- Dimensions: Thickness and width have been checked using the agreed procedure and sampling plan.
- Condition: Packaging, coil winding, edges, and surface meet the agreed acceptance criteria.
- Records: Required inspection and test documents are complete and consistent with the delivered material.
- Nonconformance handling: Any discrepancy is recorded and resolved in writing before material is released to production.
A material certificate is important, but it does not replace incoming inspection or confirmation that the coil suits the downstream forming process.
Confusing strip coil with finished coil tubing can lead to an RFQ for the wrong product. State clearly whether you need flat-rolled coil feedstock, tube, or a finished assembly.
Treating Grade 7 and Grade 12 as equivalent options obscures their different alloying routes. Compare Grade 7 with Grade 2, Grade 11 with Grade 1, and evaluate Grade 12 separately.
Using historical GB/T 14845-2007 dimensions as current 2026 limits can narrow the specification unnecessarily or leave the governing edition unclear. Name the edition and check the effective date against the order and production schedule.
Ordering by nominal thickness alone leaves tolerance, measurement, and acceptance undefined. Specify all three in the purchase order.
Assuming titanium is suitable for every process fluid can create serious service risk. Screen the actual chemistry and operating conditions with a qualified materials engineer.
For international buyers sourcing titanium coil or strip, a useful supplier conversation begins with the complete application—not just a grade and target price. Share the intended product form, component, dimensions, grade, standard and edition, service conditions, forming route, inspection needs, and delivery destination.
Shannxi Lasting New Material (Lasting Advanced Titanium) Industry Co., Ltd. can use those requirements to review the requested supply scope and identify information that needs confirmation before quotation. Any grade, tolerance, size, or lead-time commitment should be confirmed in writing against the project specification and the supplier's actual production capability.
Request a quotation: Send your required grade, product form, thickness, width, applicable standard and edition, quantity, inspection requirements, and intended application. If you are still finalizing the specification, share the operating conditions and fabrication route so your engineering team and supplier can review the material requirements before purchase.
It can mean either, depending on the buyer and search context. This article uses the term for titanium strip wound into a coil as fabrication feedstock. If you need finished tubing or a tubular coil assembly, specify that product form explicitly.
The relevant pairings are Grade 1 and Grade 11, and Grade 2 and Grade 7. Grades 7 and 11 are palladium-modified unalloyed titanium, with ASTM B265 listing 0.12–0.25% palladium. Grade 12 is a separate molybdenum-nickel alloy. [linkedin]
Do not select thickness from a generic article alone. The design engineer should set the required thickness. As a standards reference, the 2007 edition is commonly associated with 0.5–1.0 mm; the 2026 edition is stated to extend the upper limit to 1.5 mm and to take effect on December 1, 2026. Confirm exact scope and requirements in the applicable official edition before ordering.
The supplied information states that GB/T 14845-2026 is scheduled to take effect on December 1, 2026. Before that date, confirm which edition governs the contract, product qualification, and manufacturing schedule. State the applicable edition explicitly in the purchase order.
Provide grade, product form, thickness and tolerance, width, coil weight or length, applicable standard and edition, delivery condition, inspection documents, intended component, fabrication route, service environment, quantity, and delivery destination.
Do not assume it is suitable. Hydrofluoric acid and fluoride-containing media require specific corrosion review. Share the complete process chemistry and operating conditions with a qualified materials engineer before selecting a grade.
No. Plate dimensions and coil delivery requirements are not interchangeable. Confirm the applicable product scope and separately specify coil width, thickness, tolerance, weight or length, edge condition, and winding requirements.
1. ASTM International, [ASTM B265-20a: Standard Specification for Titanium and Titanium Alloy Strip, Sheet, and Plate]. Lists the grade classifications, including Grade 7 and Grade 11 palladium content.
2. Daxun, [Titanium Sheet for Heat Exchanger Plates: Grade 1 & 2]. Supplier guidance on titanium sheet, plate heat-exchanger plates, forming, and inspection.
3. State Administration for Market Regulation / National Standard Information Public Service Platform, [National standards search portal]. Search "GB/T 14845-2026" to confirm official publication metadata, implementation date, and current status.
4. [GB/T 14845-2007 text]. Historical reference for the 2007 edition; consult the official standard for contractual requirements.
5. Beiyu Titanium, [Titanium chemical-equipment components]. Supplier product information referencing Grades 2, 7, and 12 in chemical equipment.
