Source: Analysis of titanium and titanium alloy applications in marine equipment
Category | Brand | Alloy composition | Rm/MPa | Rp0.2/MPa | A/% | Z/% | KV2/J | Performance Characteristics | Application |
Low strength | TA2 | Cp – Ti | ≥400 | 275~450 | ≥25 | - | - | Forming, welding performance is good, resistant to seawater corrosion | Non-pressure-resistant castings, cold-formed parts, pipes, etc. |
TA3 | Cp – Ti | ≥500 | 385~550 | ≥20 | - | - | Forming, welding performance is good, resistant to seawater corrosion | Non-pressure-resistant castings, cold-formed parts, pipes, etc. | |
TA4 | Cp – Ti | ≥580 | 485~655 | ≥20 | - | - | Forming, welding performance is good, resistant to seawater corrosion | Low-strength pressure-bearing housing, cold-formed parts, structural parts, etc. | |
Ti31(TA22) | Ti -3Al-1Mo-1Zr-0.8Ni | >637 | >490 | ≥18 | ≥35 | ≥47 | Good forming and welding properties, 180 C seawater corrosion resistance | Heat exchangers, condensers, pumps, pipes, valves, pressure vessels, load-bearing welded structures, etc. | |
ZTA5 | Ti -4AI-0.005B | ≥590 | ≥490 | ≥10 | ≥25 | ≥24 | Good casting properties | Ship Propulsion, Electronic and Auxiliary Systems Pumps and Valves | |
| Medium-Strength | TA18M | Ti -3AI-2.5vl | ≥620 | ≥515 | ≥15 | -- | -- | Excellent cold formability and weldability | Ship exhaust pipes, jet deflectors, hatches, hatches, etc. |
TA17 | Ti -4AI-2V | 685~835 | ≥560 | ≥10 | -- | -- | Good welding performance, excellent corrosion resistance, high impact resistance | Head, Sound Guide Hood Frame, Structural Parts, etc. | |
TA5 | Ti -4AI-0.005B | ≥685 | ≥585 | ≥12 | -- | -- | Corrosion resistance and weldability | Torpedo Launcher, Frame Structures, Ship Mechanical Components, etc. | |
ZTi60 | Ti-5.5AI-4Sn- 2Zr-1Mo-1.0Ta- 0.5Nd-0.5Si | ≥670 | ≥590 | ≥10 | ≥20 | ≥43 | Good castability, corrosion resistance, and weldability | Various pressure system castings, etc. | |
Ti70(TA23) | Ti -2.5AI-2Zr-1Fe | ≥700 | ≥590 | ≥10 | - | - | Good corrosion resistance, sound transmission, cold forming, and weldability | Acoustic hood, sonar shroud, mast, cold formed parts, etc | |
Ti75(TA24) | Ti -3Al-2Mo-2Zr | ≥730 | ≥630 | ≥13 | ≥25 | - | Excellent corrosion resistance, weldability, and formability, high fracture and impact resistance | Ship structure, pressure vessel, high pressure resistant pipeline, propulsion system construction, etc | |
Bti431 | Ti-5Al-3Mo-1V | ≥770 | ≥650 | ≥9 | ≥25 | - | Good weldability and castability | Pipe structure, fasteners, gas cylinders, pressure tanks, etc | |
Ti91 | Ti-3Al-1V-1Zr-1Fe | ≥700 | ≥660 | ≥20 | ≥35 | - | Excellent cold formability, weldability, corrosion resistance and sound transmission | Acoustic hood, sonar deflector, etc | |
ZTC4 | Ti-6Al-4V | ≥835 | ≥765 | ≥5 | ≥12 | - | Crack propagation resistance, fatigue resistance, and good casting performance | High strength castings such as propeller and shell that can bear heavy load | |
Ti80(TA31) | Ti-6Al-3Nb-2Zr-1Mo | ≥880 | ≥785 | ≥10 | ≥40 | - | anti-corrosion and welding | Fasteners, structural parts, shells, etc | |
High strength | TC4ELI | Ti-6Al-4VELI | ≥860 | ≥795 | ≥10 | ≥25 | ≥24 | Crack propagation resistance, fatigue resistance, corrosion resistance, and good weldability | Pressure shell, high-pressure vessel, structural parts, ship parts, fasteners, etc |
TC4 | Ti-6Al-4V | ≥895 | ≥830 | ≥10 | - | - | Crack propagation resistance, fatigue resistance, corrosion resistance, and good weldability | Pressure shell, engine shell, steam turbine blade, accumulator, ship parts, fasteners, etc | |
TB8 | Ti-15Mo-3Al-2.7Nb-0.25Si | 825-100 | 795-965 | ≥6 | - | - | High strength, plasticity, toughness, and corrosion resistance | High strength fasteners, seawater pipelines, springs, ejection devices, etc | |
TB9 | Ti—3Al-8V-6Cr-4Mo-4Zr | - | - | - | - | - | Good plasticity, high strength and elasticity, good hardenability, excellent corrosion resistance, salt stress resistance, and corrosion resistance | Springs, fasteners, etc | |
TC11 | Ti-6.5V-3.5Mo-1.5Zr-0.3Si | ≥1010 | ≥910 | ≥8 | ≥23 | ≥24 | High strength, high toughness, and high-temperature resistance | High-pressure compressor rotor, low-pressure compressor blade, and disc, etc | |
TiB19 | Ti-3Al-1Mo-5V-4Cr-2Zr | ≥1175 | ≥1130 | ≥5 | ≥10 | - | High strength, good plasticity, and weldability | Ship high-pressure vessel, cylinder, mechanical parts, etc | |
Ti62A | Ti-6Al-2Sn-2Zr-3Mo-1Cr-1V | ≥1010 | ≥930 | ≥9 | ≥18 | ≥20 | High strength, high toughness, and impact resistance | Large depth pressure shell, pressure tank, fastener, etc |
Note:
1) specification for titanium alloy forgings for ships GJB 943a-2018;
2) Specification for titanium plates for ships gib 944a-2018;
3) Specification for titanium bars for ships GJB 9571-2018;
4) Specification for titanium alloy castings for ships gb9574-2018:
5) Specification for seamless titanium and titanium alloy pipes for ships GJB 9579-2018.
