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Grade6
Grade6 titanium alloy (Ti-5Al-2.5Sn, UNS R54520) is a representative α-phase titanium alloy that holds a pivotal position in aerospace, chemical engineering, and high-end equipment manufacturing due to its exceptional high-temperature stability, mechanical properties, and corrosion resistance. This product is fabricated from high-purity sponge titanium (≥99.7%) and Al-Sn intermediate alloy through vacuum arc remelting (VAR) or plasma melting (PA) processes, followed by precision forging and rolling techniques. Its chemical composition is precisely controlled with extremely low impurity content (O≤0.20%, N≤0.05%), ensuring uniform microstructure and grain refinement. Key features include: long-term operational temperatures up to 480°C and short-term exposure to 800°C, maintaining stable strength and structural integrity even in extreme heat; moderate strength and excellent toughness in annealed state without heat treatment, combined with superior weldability and oxidation resistance; a density of 4.48 g/cm³, offering significant lightweight advantages and better specific strength than most structural steels and aluminum alloys; outstanding corrosion resistance against seawater, chlorides, and various chemical media, making it suitable for complex and harsh environments. Whether for high-temperature components in aero-engines, corrosion-resistant equipment in chemical plants, or precision structural parts, Grade6 titanium alloy delivers stable performance, providing robust material support for efficient and reliable equipment operation. It is the preferred titanium alloy material for high-temperature and corrosion-resistant applications in advanced manufacturing.
The Grade6 titanium alloy products showcased here cover a variety of specifications and models, designed to meet the processing and application requirements of different high-end equipment components. The specific models and detailed parameters are as follows:
- Round steel/rod specifications: Grade6-Ti-5Al-2.5Sn-Φ (diameter) × L (length), with diameters ranging from 5mm to 300mm and standard lengths of 6000mm. Customized cutting is available upon request (minimum cut length: 50mm). Precision grades include standard (±0.5mm), precision (±0.1mm), and ultra-precision (±0.05mm), suitable for applications such as engine blades and shaft components.
- Plate/thin plate specifications: Grade 6-Ti-5Al-2.5Sn-δ (thickness) × W (width) × L (length), with thickness ranging from 0.01mm to 4.0mm, standard width 80mm-1000mm, and length options including 2000mm, 3000mm, or coil supply (150m per coil). Surface treatments include annealing, pickling, and polishing, suitable for manufacturing equipment casings, wall panels, high-temperature gaskets, and related components.
- Forged parts specifications: Grade 6-Ti-5Al-2.5Sn alloy, dimensions ranging from 100×100×100mm to 600×600×600mm. Customized forgings are available. Through multi-pass hot working, the parts achieve fine-grained microstructure and dense internal organization, delivering superior high-temperature and mechanical properties. Ideal for integral machining of engine disks, large structural components, and similar applications.
- Pipe specifications: Grade 6-Ti-5Al-2.5Sn-Φ (outer diameter) × δ (wall thickness) × L (length), with outer diameters ranging from 10mm to 200mm and wall thicknesses from 1mm to 15mm. Standard length is 6000mm, with customizable cutting options. Suitable for chemical pipelines, high-temperature fluid transfer fittings, and other processing requirements.
- Compliance standards: ASTM B265 (plates/thin sheets), ASTM B348 (bar/forges), AMS 4910, equivalent to GB/T 3620.1, ensuring product quality meets high-end titanium alloy industry specifications. Material certificates, smelting reports, and third-party inspection reports are available upon request.
- Chemical composition (mass percentage,%): Ti 89.85-94.00 (balance), Al 4.00-6.00, Sn 2.00-3.00, Fe ≤0.50, O ≤0.20, C ≤0.08, N ≤0.05, H ≤0.015, total other impurities ≤0.30. The precise composition ratio endows the alloy with excellent high-temperature performance and mechanical stability.
- Heat Treatment Parameters: This alloy is non-heat-treated, typically requiring annealing to optimize machinability and microstructural stability. The annealing process is performed at 700-800°C for 2-4 hours, followed by furnace or air cooling. The resulting hardness reaches HBW 311-320, facilitating subsequent machining and forming. The hot working temperature is controlled within the α+β phase region (approximately 900°C) or β phase region (around 995°C), with multi-pass deformation of 30-50% to prevent grain coarsening and ensure uniform product properties.
Grade6 titanium alloy products feature precise dimensions and stringent quality control: The round bars/rods exhibit uniform silver-gray luster without oxide scale, cracks, inclusions, or porosity, with consistent diameters and no visible bending deformation. Precision-grade products meet surface roughness standards of Ra≤0.8μm. Plates display smooth edges, clean cutting surfaces, and dimensional tolerances within ±0.05mm. Forged components show even forging marks without flash or cracks. Tubes feature smooth inner walls, uniform outer diameter and wall thickness, and no oval deformation. The superior surface texture demonstrates refined manufacturing processes, enabling direct use in precision machining and assembly.
Metallographic analysis reveals that Grade6 titanium alloy in its annealed state exhibits a homogeneous microstructure of fine equiaxed α-phase, with grain sizes meeting ASTM Grade 6 or higher standards. The material demonstrates excellent microstructural stability, free from significant segregation or impurity accumulation. When subjected to hot working in the β-phase region, needle-like α-phase forms alongside minor β-phase dispersion, significantly enhancing the alloy's high-temperature strength. The vacuum melting process ensures minimal internal defects such as shrinkage cavities and porosity, achieving a density exceeding 99.8% with impurity inclusions ≤Φ0.3mm. These features guarantee long-term high-temperature and high-pressure operation without component failure due to internal defects, ensuring stable equipment performance.
- Hardness: The annealed state exhibits stable hardness values of HBW 311-320, Vickers hardness (HV) 325-349, and Rockwell hardness (HRC) 33-36. The uniform hardness distribution facilitates mechanical processing and forming.
-Mechanical properties (annealed state): Tensile strength ≥792 MPa, yield strength ≥758 MPa, elongation at break ≥10%, reduction of area at break ≥25%, excellent impact toughness, with good strength-toughness balance, capable of withstanding moderate loads and certain impacts, preventing brittle fracture of components during operation.
- High-temperature performance: Capable of long-term operation at 480°C, with creep strength of 276MPa at 480°C and strength retention rate ≥80% at high temperatures. Effectively resists high-temperature oxidation and thermal stress, suitable for high-temperature applications such as engines and reactors.
- Corrosion resistance: Demonstrates excellent corrosion resistance in seawater and 37°C physiological saline, with a corrosion rate ≤0.002 mm/year after 3000 hours of salt spray testing. It exhibits good resistance to chlorides, acidic and alkaline media, with no significant pitting or crevice corrosion, making it suitable for corrosive environments such as marine engineering and chemical equipment.
- Physical properties: Density of 4.48 g/cm³, only 56% of steel, demonstrating significant lightweight advantages; melting point ≤1590°C, elastic modulus 110-125 GPa, shear modulus 48 GPa, with excellent thermal stability showing no significant performance degradation within the temperature range of-196°C to 480°C.
- Welding performance: Exhibits excellent welding properties, compatible with processes such as tungsten inert gas arc welding (TIG), electron beam welding, and laser welding. TIG requires strict inert gas protection, and the material maintains good mechanical properties and microstructural stability without post-weld heat treatment, making it suitable for welding complex-shaped components.
The process employs high-purity sponge titanium and premium Al-Sn intermediate alloy, employing vacuum arc remelting combined with multi-pass hot working. By maintaining strict control over chemical composition and impurity levels (O≤0.20%, N≤0.05%), the alloy achieves exceptional purity and uniform microstructure. Finite element simulation optimizes hot working parameters to prevent grain coarsening and defect formation, effectively eliminating material-related component failure risks at the source. This approach establishes a robust foundation for manufacturing and utilizing high-end equipment components.
The core advantage lies in its exceptional high-temperature stability, maintaining stable strength and structural integrity even at 480°C long-term operation, far surpassing the high-temperature tolerance of conventional titanium alloys. The annealed state inherently possesses medium strength, excellent toughness, and corrosion resistance, eliminating the need for subsequent heat treatment and simplifying the manufacturing process. Combining lightweight properties with high specific strength, it enhances structural load-bearing capacity while reducing equipment weight. Compared to ordinary structural steel, it achieves over 30% weight reduction and a 40%-60% increase in service life.
The product range covers various forms including round steel/bar, sheet/thin plate, forgings, and pipes, with comprehensive standard specifications available across all configurations. Thickness options span from 0.01mm to 4.0mm, while diameters range from 5mm to 300mm. Customized solutions are supported for irregular dimensions and special precision grades (ultra-precision ±0.05mm), including surface treatments like pickling, passivation, and sandblasting. These products eliminate the need for additional secondary processing by customers, enabling direct adaptation to the design and manufacturing requirements of high-end equipment components while reducing processing time and costs.
Engineered for high-temperature, corrosion-resistant, and lightweight applications, this solution meets diverse operational requirements including aerospace components, chemical corrosion-resistant equipment, and marine engineering structures. It serves multiple high-end industries such as aerospace, chemical, marine engineering, and advanced equipment with exceptional adaptability. Featuring superior welding performance and processability, it enables the production of complex-shaped parts while enhancing design flexibility and manufacturing efficiency.
Every batch undergoes rigorous quality control spanning the entire production cycle, including chemical composition analysis, metallographic structure examination (ASTM E112), hardness testing, tensile strength evaluation (ASTM E8), fatigue testing (ASTM E466), corrosion testing (ASTM G48), and ultrasonic flaw detection (AMS 2631). These comprehensive tests ensure all specifications meet international standards and client requirements. We provide complete test reports, material certifications, and smelting records, with third-party retesting capabilities to guarantee quality assurance and customer confidence.
Grade6 titanium alloy, renowned for its exceptional high-temperature stability, corrosion resistance, and lightweight properties, is extensively utilized in high-end equipment manufacturing and component processing under complex and demanding conditions. The specific applications are as follows:
This material is the preferred core material for aerospace high-temperature components, suitable for manufacturing high-temperature parts such as aircraft engine compressor blades, turbine disks, fan blades, combustion chamber casings, and guide vanes, as well as fuselage structural components, spacecraft fuel tanks, and missile structural components. It is widely used in aircraft models like the Boeing 787 and Airbus A350, capable of withstanding long-term high-temperature conditions of 480°C and high-frequency loads in engines. This ensures flight safety and equipment reliability while achieving lightweighting and extended endurance.
Engineered for corrosion-resistant and high-temperature applications in chemical and petroleum industries, this material enables the production of critical components including chemical reactors, corrosion-resistant pipelines, valves, flanges, and heat exchanger tube bundles. It also supplies deep-sea exploration equipment for oil platforms and oil well pipes. The material demonstrates exceptional resistance to corrosive agents such as acids, alkalis, seawater, and chlorides, while maintaining stable performance in high-temperature and high-pressure chemical environments. This ensures extended equipment lifespan and reduced maintenance costs.
This material is designed for corrosion-resistant structural components in marine engineering, including submarine pressure hulls, offshore platform supports, deep-sea probe casings, and seawater desalination equipment parts. With its outstanding seawater corrosion resistance and lightweight advantages, it can withstand prolonged use in high-salinity and high-humidity marine environments, preventing metal corrosion failure. Additionally, it reduces the weight of marine equipment, enhancing both maneuverability and service life.
It can manufacture high-temperature and wear-resistant components for high-end equipment, such as steam turbine blades, premium hydraulic mechanical parts, and critical racing components (connecting rods, chassis parts). In the high-end civilian sector, it is applicable for producing golf club heads and high-end watch cases. With its lightweight, corrosion-resistant, and high-quality texture, it enhances product quality and service life.
Beyond its aforementioned applications, Grade6 titanium alloy is also utilized in manufacturing high-temperature corrosion-resistant components for nuclear industry equipment, high-temperature structural parts for precision instruments, and auxiliary components for advanced medical devices. It meets the stringent demands of high-end industries such as aerospace, chemical engineering, and marine engineering, providing material support for the efficient operation of various high-end equipment.
Grade6 titanium alloy (Ti-5Al-2.5Sn, UNS R54520) is a representative α-phase titanium alloy that holds a pivotal position in aerospace, chemical engineering, and high-end equipment manufacturing due to its exceptional high-temperature stability, mechanical properties, and corrosion resistance. This product is fabricated from high-purity sponge titanium (≥99.7%) and Al-Sn intermediate alloy through vacuum arc remelting (VAR) or plasma melting (PA) processes, followed by precision forging and rolling techniques. Its chemical composition is precisely controlled with extremely low impurity content (O≤0.20%, N≤0.05%), ensuring uniform microstructure and grain refinement. Key features include: long-term operational temperatures up to 480°C and short-term exposure to 800°C, maintaining stable strength and structural integrity even in extreme heat; moderate strength and excellent toughness in annealed state without heat treatment, combined with superior weldability and oxidation resistance; a density of 4.48 g/cm³, offering significant lightweight advantages and better specific strength than most structural steels and aluminum alloys; outstanding corrosion resistance against seawater, chlorides, and various chemical media, making it suitable for complex and harsh environments. Whether for high-temperature components in aero-engines, corrosion-resistant equipment in chemical plants, or precision structural parts, Grade6 titanium alloy delivers stable performance, providing robust material support for efficient and reliable equipment operation. It is the preferred titanium alloy material for high-temperature and corrosion-resistant applications in advanced manufacturing.
The Grade6 titanium alloy products showcased here cover a variety of specifications and models, designed to meet the processing and application requirements of different high-end equipment components. The specific models and detailed parameters are as follows:
- Round steel/rod specifications: Grade6-Ti-5Al-2.5Sn-Φ (diameter) × L (length), with diameters ranging from 5mm to 300mm and standard lengths of 6000mm. Customized cutting is available upon request (minimum cut length: 50mm). Precision grades include standard (±0.5mm), precision (±0.1mm), and ultra-precision (±0.05mm), suitable for applications such as engine blades and shaft components.
- Plate/thin plate specifications: Grade 6-Ti-5Al-2.5Sn-δ (thickness) × W (width) × L (length), with thickness ranging from 0.01mm to 4.0mm, standard width 80mm-1000mm, and length options including 2000mm, 3000mm, or coil supply (150m per coil). Surface treatments include annealing, pickling, and polishing, suitable for manufacturing equipment casings, wall panels, high-temperature gaskets, and related components.
- Forged parts specifications: Grade 6-Ti-5Al-2.5Sn alloy, dimensions ranging from 100×100×100mm to 600×600×600mm. Customized forgings are available. Through multi-pass hot working, the parts achieve fine-grained microstructure and dense internal organization, delivering superior high-temperature and mechanical properties. Ideal for integral machining of engine disks, large structural components, and similar applications.
- Pipe specifications: Grade 6-Ti-5Al-2.5Sn-Φ (outer diameter) × δ (wall thickness) × L (length), with outer diameters ranging from 10mm to 200mm and wall thicknesses from 1mm to 15mm. Standard length is 6000mm, with customizable cutting options. Suitable for chemical pipelines, high-temperature fluid transfer fittings, and other processing requirements.
- Compliance standards: ASTM B265 (plates/thin sheets), ASTM B348 (bar/forges), AMS 4910, equivalent to GB/T 3620.1, ensuring product quality meets high-end titanium alloy industry specifications. Material certificates, smelting reports, and third-party inspection reports are available upon request.
- Chemical composition (mass percentage,%): Ti 89.85-94.00 (balance), Al 4.00-6.00, Sn 2.00-3.00, Fe ≤0.50, O ≤0.20, C ≤0.08, N ≤0.05, H ≤0.015, total other impurities ≤0.30. The precise composition ratio endows the alloy with excellent high-temperature performance and mechanical stability.
- Heat Treatment Parameters: This alloy is non-heat-treated, typically requiring annealing to optimize machinability and microstructural stability. The annealing process is performed at 700-800°C for 2-4 hours, followed by furnace or air cooling. The resulting hardness reaches HBW 311-320, facilitating subsequent machining and forming. The hot working temperature is controlled within the α+β phase region (approximately 900°C) or β phase region (around 995°C), with multi-pass deformation of 30-50% to prevent grain coarsening and ensure uniform product properties.
Grade6 titanium alloy products feature precise dimensions and stringent quality control: The round bars/rods exhibit uniform silver-gray luster without oxide scale, cracks, inclusions, or porosity, with consistent diameters and no visible bending deformation. Precision-grade products meet surface roughness standards of Ra≤0.8μm. Plates display smooth edges, clean cutting surfaces, and dimensional tolerances within ±0.05mm. Forged components show even forging marks without flash or cracks. Tubes feature smooth inner walls, uniform outer diameter and wall thickness, and no oval deformation. The superior surface texture demonstrates refined manufacturing processes, enabling direct use in precision machining and assembly.
Metallographic analysis reveals that Grade6 titanium alloy in its annealed state exhibits a homogeneous microstructure of fine equiaxed α-phase, with grain sizes meeting ASTM Grade 6 or higher standards. The material demonstrates excellent microstructural stability, free from significant segregation or impurity accumulation. When subjected to hot working in the β-phase region, needle-like α-phase forms alongside minor β-phase dispersion, significantly enhancing the alloy's high-temperature strength. The vacuum melting process ensures minimal internal defects such as shrinkage cavities and porosity, achieving a density exceeding 99.8% with impurity inclusions ≤Φ0.3mm. These features guarantee long-term high-temperature and high-pressure operation without component failure due to internal defects, ensuring stable equipment performance.
- Hardness: The annealed state exhibits stable hardness values of HBW 311-320, Vickers hardness (HV) 325-349, and Rockwell hardness (HRC) 33-36. The uniform hardness distribution facilitates mechanical processing and forming.
-Mechanical properties (annealed state): Tensile strength ≥792 MPa, yield strength ≥758 MPa, elongation at break ≥10%, reduction of area at break ≥25%, excellent impact toughness, with good strength-toughness balance, capable of withstanding moderate loads and certain impacts, preventing brittle fracture of components during operation.
- High-temperature performance: Capable of long-term operation at 480°C, with creep strength of 276MPa at 480°C and strength retention rate ≥80% at high temperatures. Effectively resists high-temperature oxidation and thermal stress, suitable for high-temperature applications such as engines and reactors.
- Corrosion resistance: Demonstrates excellent corrosion resistance in seawater and 37°C physiological saline, with a corrosion rate ≤0.002 mm/year after 3000 hours of salt spray testing. It exhibits good resistance to chlorides, acidic and alkaline media, with no significant pitting or crevice corrosion, making it suitable for corrosive environments such as marine engineering and chemical equipment.
- Physical properties: Density of 4.48 g/cm³, only 56% of steel, demonstrating significant lightweight advantages; melting point ≤1590°C, elastic modulus 110-125 GPa, shear modulus 48 GPa, with excellent thermal stability showing no significant performance degradation within the temperature range of-196°C to 480°C.
- Welding performance: Exhibits excellent welding properties, compatible with processes such as tungsten inert gas arc welding (TIG), electron beam welding, and laser welding. TIG requires strict inert gas protection, and the material maintains good mechanical properties and microstructural stability without post-weld heat treatment, making it suitable for welding complex-shaped components.
The process employs high-purity sponge titanium and premium Al-Sn intermediate alloy, employing vacuum arc remelting combined with multi-pass hot working. By maintaining strict control over chemical composition and impurity levels (O≤0.20%, N≤0.05%), the alloy achieves exceptional purity and uniform microstructure. Finite element simulation optimizes hot working parameters to prevent grain coarsening and defect formation, effectively eliminating material-related component failure risks at the source. This approach establishes a robust foundation for manufacturing and utilizing high-end equipment components.
The core advantage lies in its exceptional high-temperature stability, maintaining stable strength and structural integrity even at 480°C long-term operation, far surpassing the high-temperature tolerance of conventional titanium alloys. The annealed state inherently possesses medium strength, excellent toughness, and corrosion resistance, eliminating the need for subsequent heat treatment and simplifying the manufacturing process. Combining lightweight properties with high specific strength, it enhances structural load-bearing capacity while reducing equipment weight. Compared to ordinary structural steel, it achieves over 30% weight reduction and a 40%-60% increase in service life.
The product range covers various forms including round steel/bar, sheet/thin plate, forgings, and pipes, with comprehensive standard specifications available across all configurations. Thickness options span from 0.01mm to 4.0mm, while diameters range from 5mm to 300mm. Customized solutions are supported for irregular dimensions and special precision grades (ultra-precision ±0.05mm), including surface treatments like pickling, passivation, and sandblasting. These products eliminate the need for additional secondary processing by customers, enabling direct adaptation to the design and manufacturing requirements of high-end equipment components while reducing processing time and costs.
Engineered for high-temperature, corrosion-resistant, and lightweight applications, this solution meets diverse operational requirements including aerospace components, chemical corrosion-resistant equipment, and marine engineering structures. It serves multiple high-end industries such as aerospace, chemical, marine engineering, and advanced equipment with exceptional adaptability. Featuring superior welding performance and processability, it enables the production of complex-shaped parts while enhancing design flexibility and manufacturing efficiency.
Every batch undergoes rigorous quality control spanning the entire production cycle, including chemical composition analysis, metallographic structure examination (ASTM E112), hardness testing, tensile strength evaluation (ASTM E8), fatigue testing (ASTM E466), corrosion testing (ASTM G48), and ultrasonic flaw detection (AMS 2631). These comprehensive tests ensure all specifications meet international standards and client requirements. We provide complete test reports, material certifications, and smelting records, with third-party retesting capabilities to guarantee quality assurance and customer confidence.
Grade6 titanium alloy, renowned for its exceptional high-temperature stability, corrosion resistance, and lightweight properties, is extensively utilized in high-end equipment manufacturing and component processing under complex and demanding conditions. The specific applications are as follows:
This material is the preferred core material for aerospace high-temperature components, suitable for manufacturing high-temperature parts such as aircraft engine compressor blades, turbine disks, fan blades, combustion chamber casings, and guide vanes, as well as fuselage structural components, spacecraft fuel tanks, and missile structural components. It is widely used in aircraft models like the Boeing 787 and Airbus A350, capable of withstanding long-term high-temperature conditions of 480°C and high-frequency loads in engines. This ensures flight safety and equipment reliability while achieving lightweighting and extended endurance.
Engineered for corrosion-resistant and high-temperature applications in chemical and petroleum industries, this material enables the production of critical components including chemical reactors, corrosion-resistant pipelines, valves, flanges, and heat exchanger tube bundles. It also supplies deep-sea exploration equipment for oil platforms and oil well pipes. The material demonstrates exceptional resistance to corrosive agents such as acids, alkalis, seawater, and chlorides, while maintaining stable performance in high-temperature and high-pressure chemical environments. This ensures extended equipment lifespan and reduced maintenance costs.
This material is designed for corrosion-resistant structural components in marine engineering, including submarine pressure hulls, offshore platform supports, deep-sea probe casings, and seawater desalination equipment parts. With its outstanding seawater corrosion resistance and lightweight advantages, it can withstand prolonged use in high-salinity and high-humidity marine environments, preventing metal corrosion failure. Additionally, it reduces the weight of marine equipment, enhancing both maneuverability and service life.
It can manufacture high-temperature and wear-resistant components for high-end equipment, such as steam turbine blades, premium hydraulic mechanical parts, and critical racing components (connecting rods, chassis parts). In the high-end civilian sector, it is applicable for producing golf club heads and high-end watch cases. With its lightweight, corrosion-resistant, and high-quality texture, it enhances product quality and service life.
Beyond its aforementioned applications, Grade6 titanium alloy is also utilized in manufacturing high-temperature corrosion-resistant components for nuclear industry equipment, high-temperature structural parts for precision instruments, and auxiliary components for advanced medical devices. It meets the stringent demands of high-end industries such as aerospace, chemical engineering, and marine engineering, providing material support for the efficient operation of various high-end equipment.
