Titanium Grade 4 bar for heat exchanger applications is the highest strength commercially pure titanium material available, delivering 20-30% higher mechanical strength than Titanium Grade 3 while maintaining exceptional corrosion resistance and good formability. Specially engineered for ultra-high pressure and heavy-duty industrial heat transfer environments, it provides unmatched durability in deep-sea offshore oil & gas, high-pressure seawater desalination and extreme chemical processing applications where maximum structural integrity is non-negotiable.
As the premium industrial pure titanium grade for mission-critical heat exchangers, Titanium Grade 4 bar offers near-titanium-alloy strength at 30-40% lower material cost, with identical universal corrosion resistance to all commercially pure titanium grades. With over 20 years of production experience, Emily PIPE supplies precision-machined Titanium Grade 4 bars and fabricated heat exchanger components that meet the strictest international quality standards for the most demanding industrial projects.
| Item | Details |
|---|---|
| Executive Standards | 1. International Material Standards: ASTM B348 (Titanium and Titanium Alloy Bars and Billets), ASTM B337 (Seamless Titanium Tubes), ASTM B338 (Welded Titanium Tubes), ASME SB348, ASME SB337, ASME SB338
2. Heat Exchanger Specific Standards: TEMA (Tubular Exchanger Manufacturers Association) Standards Class R/C, HEI (Heat Exchange Institute) Standards 3. Regional Standards: DIN 17860, ISO 5832-2, JIS H4650, GB/T 2965 4. Testing Standards: ASTM E8 (Tensile), ASTM E23 (Impact), ASTM E10 (Hardness), ASTM E243 (Eddy Current Testing), ASTM A450 (Hydrostatic Testing) 5. Quality Management Standards: ISO 9001, ISO 14001, PED 2014/68/EU, API Q1 (for oil & gas applications) |
| Material Grade | 1. Main Grade: Titanium Grade 4 (Commercially Pure Titanium, Ultra-High Strength Heat Exchanger Grade)
2. International Designations: UNS R50700, ASTM Grade 4, DIN 3.7065, ISO Ti4 3. Equivalent Grades: TA4 (China), Grade 4 (USA), Ti 98.8 (Germany), fully compatible with all global heat exchanger manufacturing standards 4. Special Grades: Ultra-high pressure seamless tube grade; precision forged grade for heavy-duty components; ultra-clean grade for critical chemical and offshore applications |
| Chemical Composition (Weight %) | 1. Titanium (Ti): 98.8% minimum (base element)
2. Nitrogen (N): ≤0.05 3. Carbon (C): ≤0.10 4. Hydrogen (H): ≤0.015 5. Iron (Fe): ≤0.50 6. Oxygen (O): ≤0.40 7. Other Elements (each): ≤0.10 8. Other Elements (total): ≤0.40 Note: Controlled higher interstitial element (oxygen and iron) content provides the exceptional strength that makes Grade 4 ideal for ultra-high pressure heat exchanger applications |
| Mechanical Properties (Annealed State) | 1. Tensile Strength (Room Temperature): 550 – 700 MPa
2. 0.2% Yield Strength (Room Temperature): ≥480 MPa 3. Elongation (δ5): ≥15% (good formability for high-pressure component fabrication) 4. Reduction of Area: ≥30% 5. Hardness (HB): ≤240 6. Modulus of Elasticity: 105 GPa 7. Thermal Conductivity: 15.1 W/m·K (at 20℃) 8. Thermal Expansion Coefficient: 8.6 × 10⁻⁶ /℃ (20-100℃) 9. Melting Point: 1668℃ 10. Maximum Continuous Service Temperature: 315℃ in oxidizing environments |
| Dimensional Tolerance (Heat Exchanger Precision Grade) | 1. Hot Rolled Bars:
– Diameter 6mm – 50mm: ±0.3mm – Diameter 50mm – 150mm: ±0.5mm – Diameter 150mm – 300mm: ±0.8mm 2. Cold Drawn Bars: – Diameter 6mm – 30mm: ±0.03mm – Diameter 30mm – 80mm: ±0.05mm – Diameter 80mm – 150mm: ±0.10mm 3. Precision Ground Bars: – Diameter 6mm – 100mm: ±0.01mm 4. Rectangular/Square Bars: – Width/Thickness: ±0.05mm for dimensions ≤50mm; ±0.10mm for dimensions >50mm |
| Heat Exchanger Operating Conditions (Detailed) | 1. Temperature Range:
– Continuous service temperature: -253℃ to 315℃ (oxidizing environments) – Intermittent service temperature: up to 425℃ – Cryogenic service: maintains excellent ductility down to absolute zero, ideal for high-pressure LNG and cryogenic heat exchangers 2. Pressure Range: – Design pressure: up to 250 bar (3625 psi) for seamless tubes (25% higher than Grade 3) – Design pressure: up to 150 bar (2175 psi) for welded tubes – Pressure vessel grade: fully compliant with ASME Section VIII Div. 1 and Div. 2 for pressure-containing components 3. Compatible Media: – Seawater, brackish water and high-concentration brine solutions (up to 25% NaCl, all temperatures) – Chloride-containing solutions (up to 250℃, no pitting or crevice corrosion) – Most organic acids (acetic, citric, formic, lactic) at all concentrations and temperatures – Inorganic acids (nitric, sulfuric <20%, hydrochloric <25%) at moderate temperatures – Oxidizing and reducing environments – Liquefied natural gas (LNG), liquid nitrogen and other cryogenic fluids – High H₂S and CO₂ sour crude oil and produced water (up to 1000 ppm H₂S) 4. Industry-Specific Operating Conditions: – Deep-Sea Offshore Oil & Gas: Operating temperature up to 220℃, pressure up to 200 bar, high H₂S/CO₂ produced water – High-Pressure Reverse Osmosis (HPRO) Desalination: Operating temperature 60-200℃, pressure 1-80 bar, seawater with 3.5-12% NaCl content – Extreme Chemical Processing: Operating temperature up to 300℃, pressure up to 120 bar, highly corrosive chemical mixtures – Nuclear Power Generation: Operating temperature up to 300℃, pressure up to 150 bar, high-purity cooling water – LNG Processing: Operating temperature -162℃ to 200℃, pressure up to 100 bar, liquefied natural gas and natural gas liquids |
| Heat Exchanger Tube Bundle Types (Detailed) | 1. U-Bend Tubes:
– Description: Tubes bent into U-shape with uniform bend radius, allowing for thermal expansion without additional expansion joints. Grade 4’s exceptional strength enables thinner wall sections while maintaining higher pressure ratings, resulting in significant weight reduction – Bend Radius Options: 1.5×OD, 2×OD, 3×OD, 4×OD and custom radii – Wall Thickness Range: 0.8mm – 8.0mm – Outer Diameter Range: 6mm – 80mm – Applications: Ultra-high pressure shell and tube heat exchangers, high-pressure condensers, evaporators, reboilers for offshore platforms – Advantages: Excellent thermal expansion compensation, easy replacement, lower maintenance cost, 25% higher pressure rating than Grade 3, 30% weight reduction compared to steel – Quality Control: 100% visual and dimensional inspection after bending; no cracking, wall thinning >7% or ovality >3% allowed; 100% re-testing after bending 2. Condenser Tubes: – Description: Straight seamless tubes with precise dimensional tolerances for ultra-high pressure condenser applications. Grade 4 is the preferred material for deep-sea offshore platform condensers and high-pressure power plant condensers – Outer Diameter Range: 10mm – 70mm (most common: 19.05mm, 25.4mm, 31.75mm, 38.1mm, 50.8mm) – Wall Thickness Range: 1.0mm – 5.0mm (most common: 1.65mm, 2.11mm, 2.77mm, 3.40mm) – Length Range: Up to 24 meters – Applications: Offshore platform condensers, high-pressure power plant condensers, refrigeration condensers, petrochemical condensers – Advantages: High thermal efficiency, low fouling, long service life, 40% higher pressure rating than copper alloys – Quality Control: 100% eddy current and hydrostatic testing; strict control of ovality ≤2% and wall thickness variation ≤6% 3. Evaporator Tubes: – Description: Tubes with enhanced surface finishes or internal/external fins for improved heat transfer. Grade 4’s excellent strength allows for thinner fin walls and higher fin densities while maintaining structural integrity – Surface Options: Smooth, corrugated, low-fin (19-26 fins per inch), high-fin (26-40 fins per inch) – Fin Height: 0.5mm – 3.0mm – Applications: High-pressure falling film evaporators, forced circulation evaporators, refrigeration evaporators, desalination evaporators – Advantages: Increased heat transfer area by 2-6 times, higher efficiency, compact design, higher pressure rating than all other pure titanium grades 4. Straight Tubes: – Description: Straight seamless tubes for fixed tube sheet heat exchangers. Grade 4’s higher strength allows for significantly thinner wall sections and lighter weight while maintaining pressure integrity – Length Range: Up to 12 meters (standard); up to 24 meters (custom) – Applications: Ultra-high pressure fixed tube sheet heat exchangers, coolers, heaters, process exchangers – Advantages: Lower cost, easier mechanical cleaning, 25% higher pressure rating than Grade 3, 40% weight reduction compared to steel 5. Coiled Tubes: – Description: Tubes coiled into helical or spiral shapes for compact ultra-high pressure heat exchangers. Grade 4’s excellent strength and formability allow for tight coil diameters and extremely high pressure ratings – Coil Diameter Range: 100mm – 8000mm – Applications: Compact high-pressure heat exchangers, immersion heaters, waste heat recovery units, chemical reactors, LNG processing units – Advantages: High heat transfer efficiency (2-3 times higher than shell and tube), compact design, excellent thermal shock resistance, highest pressure rating of all pure titanium grades |
| Surface Quality (Detailed) | 1. Standard Surface Finishes:
– Pickled and Passivated (Standard): Acid pickled to remove scale and oxides, then passivated to form a protective 5-10nm thick titanium oxide layer. Surface roughness Ra ≤ 3.2μm. Suitable for most general-purpose high-pressure heat exchangers. – Mechanically Polished: Polished to surface roughness Ra ≤ 0.8μm using abrasive belts. Reduces fouling by 30-50% and improves cleanability. Ideal for food, pharmaceutical and high-purity applications. – Electropolished: Ultra-smooth surface with Ra ≤ 0.2μm achieved through electrochemical process. Maximum corrosion resistance and minimum fouling. Used in critical pharmaceutical, semiconductor and biotech applications. – Sand Blasted: Uniform matte finish with Ra ≤ 6.3μm using aluminum oxide media. Improves coating adhesion for specialized applications. 2. Surface Defect Control Standards (Ultra-High Pressure Grade): – No cracks, laps, seams, inclusions, laminations or other harmful defects allowed on the entire surface – Minor scratches: depth ≤ 3% of nominal wall thickness, length ≤ 30mm, no more than 1 per 2 meters – Minor dents: depth ≤ 2% of nominal wall thickness, diameter ≤ 3mm, no more than 1 per 2 meters – Surface oxidation: no heavy oxidation, discoloration or scale allowed 3. Cleanliness Requirements (Ultra-High Pressure Grade): – All tubes are thoroughly cleaned inside and out using alkaline, ultrasonic and high-pressure water jet cleaning to remove oil, grease, dirt and machining residues – Residual oil content: ≤ 10mg/m² for standard grade; ≤ 2mg/m² for high-purity grade – No foreign particles, debris or moisture allowed inside the tubes – Cleaned tubes are immediately capped and sealed with heavy-duty polyethylene caps to prevent contamination during transportation |
| Straightness (Detailed) | 1. Straightness Tolerance Standards (Ultra-High Pressure Grade):
– Standard Grade: ≤ 0.8mm per meter length – Precision Grade: ≤ 0.4mm per meter length – Ultra-Precision Grade: ≤ 0.15mm per meter length – Maximum total straightness deviation: ≤ 2.5mm for tubes up to 6 meters long; ≤ 4mm for tubes up to 12 meters long; ≤ 8mm for tubes up to 24 meters long 2. Measurement Method: – Straightness is measured using a laser straightness gauge with ±0.005mm accuracy along the entire length of the tube – Measurements are taken at 8 points 45° apart around the circumference to ensure accuracy – All measurements are performed at room temperature (20±5℃) to eliminate thermal expansion effects 3. Production Control Measures: – Multiple straightening operations during production: hot straightening after rolling, cold straightening after annealing – Final precision straightening using CNC multi-roll straightening machines with closed-loop feedback – 100% straightness inspection for all high-pressure heat exchanger tubes – Tubes that do not meet straightness requirements are re-straightened or rejected |
| Eddy Current Testing (ET) (Detailed) | 1. Executive Standards:
– ASTM E243: Standard practice for electromagnetic (eddy current) examination of seamless and welded nonferrous tubes – ASTM E309: Standard practice for electromagnetic (eddy current) examination of steel tubular products – TEMA RCB-7.4: Eddy current testing requirements for heat exchanger tubes – API 5L: Additional requirements for oil and gas applications 2. Testing Equipment: – Multi-frequency eddy current testing machines with 16-32 channels – Automatic data acquisition and recording system with 3D defect imaging capability – Calibration standards with artificial defects (longitudinal notches, transverse notches, flat-bottom holes) of specified sizes 3. Testing Parameters (Ultra-High Pressure Grade): – Testing frequency: 20kHz – 300kHz (selected based on tube diameter, wall thickness and material grade) – Inspection speed: 0.3m/s – 1.5m/s (slower than lower grades for higher sensitivity) – Sensitivity: calibrated to detect defects as small as 3% of nominal wall thickness – Phase angle: adjusted to maximize sensitivity to surface and subsurface defects 4. Defect Detection Capability: – Longitudinal and circumferential cracks (depth ≥3% wall thickness) – Pitting and corrosion defects (diameter ≥0.3mm, depth ≥3% wall thickness) – Wall thickness variations (≥±6% of nominal) – Inclusions and laminations (area ≥0.5mm²) – Weld defects (for welded tubes: porosity, lack of fusion, cracks) 5. Acceptance Criteria: – No defects that produce a signal equal to or greater than the calibration standard signal are allowed – Minor signals below the calibration threshold are evaluated based on size, location and type – All defective tubes are marked with fluorescent paint and segregated for rework or rejection 6. Documentation: – 100% of tubes are tested and documented – Each shipment includes an eddy current test report with calibration records, test parameters, individual tube results and defect maps |
| Hydrostatic Testing (Detailed) | 1. Executive Standards:
– ASTM A450: Standard specification for general requirements for carbon, low-alloy, and alloy steel tubes – ASME B31.3: Process piping code – TEMA RCB-7.3: Hydrostatic testing requirements for heat exchanger tubes – API 6H: Additional requirements for offshore applications 2. Test Pressure Calculation (Ultra-High Pressure Grade): – Test pressure = 1.5 × design pressure – Minimum test pressure: 25 bar (363 psi) – Maximum test pressure: limited by the yield strength of the material (not exceeding 80% of yield strength) – For Grade 4 tubes, typical test pressures range from 40 bar to 180 bar depending on wall thickness and diameter 3. Test Procedure: – Tubes are filled with demineralized, deoxygenated water at ambient temperature (10-30℃) – Air is completely vented from the system to prevent false pressure readings – Pressure is gradually increased to the specified test pressure at a rate of ≤5 bar/s – Pressure is held for a minimum of 20 seconds per meter of tube length, but not less than 60 seconds – Tubes are visually inspected for leaks, bulging or deformation during the holding period 4. Acceptance Criteria: – No leakage through the tube wall or at the end closures – No permanent deformation, bulging or wrinkling of the tube – No pressure drop during the holding period 5. Post-Test Processing: – Tubes are thoroughly drained of water after testing – Tubes are dried with heated filtered compressed air (dew point ≤-60℃) to prevent water spots and corrosion – Tubes are immediately capped and sealed after drying 6. Documentation: – Each shipment includes a hydrostatic test report with test pressure, holding time, test medium, temperature and individual tube results |
| Fixed Length | 1. Standard Fixed Lengths:
– 1000mm, 2000mm, 3000mm, 4000mm, 5000mm, 6000mm – Most common for high-pressure heat exchangers: 3000mm, 4000mm, 6000mm 2. Custom Lengths: – Any length from 100mm to 12000mm available upon request – Special lengths up to 24000mm available for large-scale power plant and offshore heat exchangers 3. Length Tolerance: – Standard tolerance: ±2mm for lengths up to 6000mm – Precision tolerance: ±0.5mm for lengths up to 6000mm – Tolerance for lengths over 6000mm: ±4mm 4. Cutting Services: – Precision cutting to exact customer specifications using CNC band saws and circular saws – Cutting accuracy: ±0.3mm for lengths up to 6000mm – All cut ends are deburred and chamfered to remove sharp edges and burrs |
| Tube End Processing Standards (Detailed) | 1. Plain End (Standard):
– Description: Square cut end with no additional machining – End Squareness: ≤ 0.3mm for tubes up to 50mm OD; ≤0.8mm for tubes 50-100mm OD – Burr Removal: All burrs are removed from both inside and outside edges using chamfering tools – Applications: General-purpose high-pressure heat exchangers, welded tube sheet connections, butt welding 2. Chamfered End: – Description: Precision beveled end for welding or tube sheet expansion – Standard Chamfer Angles: 30°, 37.5°, 45°, 60° – Chamfer Depth: 1-7mm depending on wall thickness (typically 1/3 of wall thickness) – Root Face: 0.5-2.5mm as specified by customer – Applications: Welded tube sheet connections, butt welding, ultra-high pressure applications 3. Threaded End: – Description: Precision machined threads on the tube end for high-pressure connections – Thread Standards: NPT, BSPT, BSPP, metric threads (M6-M100), UN/UNF threads – Thread Tolerance: Class 2A for external threads; Class 2B for internal threads – Thread Length: 10-80mm depending on tube diameter and thread standard – Applications: High-pressure instrumentation connections, small-bore high-pressure heat exchangers, hydraulic systems 4. Flared End: – Description: Expanded end for high-pressure flared tube connections – Flare Angles: 37° (JIC), 45° (SAE), 90° – Flare Diameter: 1.2-1.8×OD depending on flare angle – Flare Thickness: ≥90% of original wall thickness – Applications: Ultra-high pressure hydraulic and pneumatic connections, refrigeration systems, instrumentation lines 5. Swaged End: – Description: Reduced or expanded diameter end for high-pressure fitting connections – Reduction/Expansion Ratio: Up to 35% of original diameter – Transition Length: 3-6× diameter change – Wall Thickness Variation: ≤±7% of nominal – Applications: Tube-to-tube connections, manifold assemblies, high-pressure heat exchanger headers 6. Tube End Protection: – All tube ends are protected with heavy-duty polyethylene caps with internal sealing rings during transportation – Metal caps with rubber seals available for large diameter tubes and international shipping – Protective caps are removed only at the time of installation to prevent contamination |
| Why Choose Us (Emily PIPE) | 1. 20+ Years of High-Pressure Titanium Heat Exchanger Expertise: We have been manufacturing and supplying titanium heat exchanger components to global industrial markets for over 20 years, with deep specialization in ultra-high pressure Grade 4 titanium applications for offshore oil & gas and desalination industries.
2. Full-Process Quality Control: We implement a comprehensive quality control system from raw material inspection to finished product testing, including 100% eddy current testing and hydrostatic testing for all high-pressure heat exchanger tubes. 3. Advanced Production Equipment: Our production facilities are equipped with state-of-the-art titanium processing equipment, including precision cold rolling mills, CNC bending machines, and automatic welding machines specifically designed for high-pressure titanium tubes. 4. Complete Certification: Our products meet all major international standards and hold certifications including ASTM, ASME, PED, ISO 9001 and API Q1, ensuring compliance with the strictest global project requirements. 5. Advanced Customization Capability: We can produce custom sizes, lengths, surface finishes and tube end processing according to your drawings and technical specifications, including complex high-pressure U-bend and coiled tube bundles. 6. One-Stop Solution: We provide complete heat exchanger solutions from material selection and component manufacturing to assembly and pressure testing, reducing your supply chain complexity and costs. 7. Global Logistics Support: We have extensive experience in international shipping for offshore projects and can arrange door-to-door delivery to your facility anywhere in the world with reliable lead times and specialized packaging. 8. Professional Technical Support: Our team of metallurgical engineers and heat exchanger specialists provides expert guidance on material selection, design optimization and troubleshooting for ultra-high pressure applications. |
| Inquiry Guidance Words | 1. If you need high-quality Titanium Grade 4 bars or ultra-high pressure heat exchanger tubes for your offshore, desalination or chemical processing project, please send us your specific requirements including dimensions (outer diameter, wall thickness, length), quantity, design pressure, operating temperature, required standards, surface finish, tube end processing and delivery date, and we will provide a detailed quotation within 12 hours.
2. For any questions about material properties, corrosion resistance in specific high-pressure operating conditions, testing requirements or heat exchanger design, our titanium specialists are available to assist you promptly. 3. Emily PIPE is your trusted partner for high-performance ultra-high pressure titanium heat exchanger solutions. Contact us today to discuss how our Grade 4 titanium products can help you improve the efficiency, reliability and service life of your most critical heat exchange equipment. |
| Supplementary Industry Information | 1. Comprehensive Test Reports: Each batch comes with a full Material Test Report (MTR) including chemical composition analysis, mechanical properties testing, heat treatment records, eddy current test results, hydrostatic test results and ultrasonic test results for high-pressure applications.
2. Full Material Traceability: Every product comes with a unique heat number and complete traceability documentation from raw material ore to finished product, meeting the strictest industrial requirements for offshore and high-pressure applications. 3. Value-Added Processing: We offer comprehensive value-added services including precision cutting, CNC machining, bending, welding, tube end processing and assembly, providing ready-to-install heat exchanger components. 4. Specialized Packaging: We use protective packaging designed for high-pressure titanium products, including plastic end caps with sealing rings, anti-corrosion wrapping and wooden crates with steel reinforcement to prevent damage during transportation. 5. Prototype Development Support: We support small batch prototype orders with fast turnaround times to help you accelerate product development and testing for new high-pressure projects. 6. Mass Production Capability: We have the capacity to produce thousands of tons of Titanium Grade 4 heat exchanger components per year to support large-scale offshore and desalination projects. 7. Market Growth: The global high-pressure titanium heat exchanger market is projected to grow at a CAGR of over 13% through 2030, driven by increasing demand from deep-sea offshore oil & gas exploration and high-pressure seawater desalination industries. 8. Cost Advantage: Titanium Grade 4 offers 80-90% of the strength of Ti-6Al-4V titanium alloy at 30-40% lower material cost, making it the most cost-effective solution for ultra-high pressure corrosion-resistant heat exchanger applications. 9. Sustainability Advantage: Titanium is 100% recyclable and has a much longer service life than conventional materials, making it the most sustainable choice for heat exchanger applications with the lowest total lifecycle cost. |