Titanium Grade 23 Plates | Ti‑6Al‑4V ELI Toughness and Strength for Critical Process & Offshore Assets
Table of Contents:
A multinational pharma and specialty‑chemicals site on the coast had already upgraded a high‑value hydrogen peroxide preparation skid from 316L to standard Ti‑6Al‑4V plates, but repeated start‑stop cycles and vibration around a high‑speed pump caused fatigue cracking in several brackets and a nozzle cover, raising uncomfortable questions about fracture margins in such a critical unit. When the mechanical integrity team re‑engineered these fracture‑critical plates and supports in Titanium Grade 23 Plates (Ti‑6Al‑4V ELI, UNS R56407), going from a conventional Ti‑6Al‑4V chemistry to extra‑low‑interstitial material with yield strength typically in the 120–160 ksi (≈828–1100 MPa) range and improved fracture toughness, inspection reports over subsequent campaigns showed clean surfaces, stable bolt loads and no indications in areas that had previously cracked, even though the density remained less than 60% of steel.
Titanium Grade 23 is the extra‑low‑interstitial (ELI) version of Ti‑6Al‑4V, containing about 6% aluminium and 4% vanadium with significantly reduced levels of oxygen, nitrogen and other interstitial elements compared with standard Grade 5. The alloy is designated UNS R56407 and commonly associated with material numbers such as 3.7165, and plate, sheet and strip products for industrial and medical use are supplied under specifications including ASTM B265 Grade 23, AMS 4907 and implant‑focused standards such as ASTM F136. Typical data from producers show yield strength ranges around 120–160 ksi (≈828–1100 MPa), tensile strength ranges around 125–174 ksi (≈862–1200 MPa) and elongation ranges of roughly 10–18% depending on product and orientation.
For procurement heads, corrosion and mechanical engineers, fabricators, OEMs and hardware or industrial supply stores serving chemical, oil & gas, marine, pharma and power‑generation projects, Titanium Grade 23 plates bring the already high strength and corrosion resistance of Ti‑6Al‑4V together with improved fracture toughness and fatigue performance due to their lower impurity levels. Sources describe Grade 23 as a high‑toughness, high‑fatigue‑strength alpha‑beta alloy used in fracture‑critical biomedical and aerospace components, with data showing high‑cycle fatigue life improvements and strong performance in corrosive media such as physiological solutions and chloride environments when properly processed.
Aurico Alloys LLP can support these needs as an affordable, authentic Titanium Grade 23 Plates supplier, manufacturer and stockist in India with exports abroad, supplying plates aligned with UNS R56407 chemistry and ASTM B265 Grade 23 mechanical requirements with EN 10204 certification to chemical, oil & gas, marine, pharma and power clients.
High-quality Titanium Grade 23 Plates ready for industrial use.
Specification Overview
| Supplier & Role | Aurico Alloys LLP – Titanium Grade 23 Plates supplier, stockist, exporter in India to abroad |
|---|---|
| Alloy Description | Ti‑6Al‑4V ELI (Grade 23), an alpha‑beta titanium alloy with reduced interstitial content for higher toughness and fatigue resistance |
| UNS / Werkstoff / EN | UNS R56407, commonly linked to material numbers such as 3.7165 for wrought products |
| Main Plate Standards | ASTM B265 / ASME SB‑265 Grade 23 for strip, sheet and plate; AMS 4907 for plate; biomedical standards such as ASTM F136 for implant‑grade product |
| Thickness Range | 4.75 mm – 150 mm |
| Density | ≈0.160 lb/in³ (≈4.43 g/cm³) |
| Corrosion & Toughness Focus | High specific strength and corrosion resistance similar to Grade 5, with improved fracture toughness and fatigue strength due to extra‑low interstitial levels |
| Price | INR 2,500 – 7,500 per kg. Indicative USD 29 – 88 per kg; quoted against grade, form, size and quantity. |
UNS & Equivalent Grades
| Property | Value |
|---|---|
| UNS number | R56407 |
| Werkstoff / EN number | 3.7165 |
| Plate, sheet and strip specification | ASTM B265 / AMS 4907 |
Identifiers and physical constants for Titanium Grade 23. A dash means no such designation is published for this grade.
Stock & Product Availability
As a Titanium Grade 23 Plates stockist, Aurico Alloys LLP can supply plate and sheet thicknesses suited to brackets, base plates, equipment covers, structural panels, tube sheets and fracture‑critical fixtures in chemical, offshore, marine, pharma and power projects, within the thickness and width ranges normally covered by ASTM B265 Grade 23. Plates are typically delivered in annealed or mill‑annealed condition to meet the specified yield and tensile values with adequate elongation, and services such as cut‑to‑size, precision profiling and weld‑prep edge machining help fabricators and OEMs reduce machining time and scrap while retaining full traceability.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | — | 0.08 |
| Oxygen (O) | — | 0.13 |
| Nitrogen (N) | — | 0.03 |
| Hydrogen (H) | — | 0.0125 (product analysis - ingot analysis for all other elements) |
| Iron (Fe) | — | 0.25 |
| Aluminium (Al) | 5.5 | 6.5 |
| Vanadium (V) | 3.5 | 4.5 |
| Other elements (each) | — | 0.1 |
| Other elements (total) | — | 0.4 |
| Titanium (Ti) | — | Balance (determined by difference) |
Composition limits for Titanium Grade 23. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Property (Room Temperature, Typical Plate) | Typical Value – Titanium Grade 23 |
|---|---|
| Density | ≈0.160 lb/in³ (≈4.43 g/cm³) |
| Ultimate Tensile Strength | Common ranges around 125–174 ksi (≈862–1200 MPa) depending on product and orientation |
| Yield Strength (0.2% offset) | Typical ranges around 120–160 ksi (≈828–1100 MPa) in bar and plate tables; ASTM B265 Grade 23 lists a minimum of 110 ksi (≈759 MPa) |
| Elongation | ≈10–18% in representative data, depending on geometry and direction |
| Modulus of Elasticity | ≈110 GPa, similar to Grade 5 and other Ti‑6Al‑4V alloys |
| Melting Point | Datasheets list melting around 3200 °F (≈1760–1765 °C) |
| Fatigue Behaviour | ELI products are described as having improved high‑cycle fatigue strength and crack‑growth resistance compared with standard Ti‑6Al‑4V, with some studies reporting large gains in fatigue life after suitable surface treatments |
| Corrosion Behaviour | High corrosion resistance in chlorides and many industrial environments, with biomedical studies highlighting stable passive films in physiological solutions when properly processed |
Applications & Benefits
- Chemical & Oil & Gas: Titanium Grade 23 plates are suited to fracture‑critical or fatigue‑sensitive components such as high‑pressure covers, brackets, instrument supports and structural plates in contact with chlorides or aggressive media where high specific strength and toughness are needed beyond what stainless steels or CP titanium can provide.
- Marine & Power Generation: In offshore topside structures, marine handling equipment and power‑plant components exposed to seawater and dynamic loads, Ti‑6Al‑4V ELI provides high strength at low weight with good fatigue performance, supporting lighter, more durable designs than steel alternatives.
- Pharma & High‑Purity Plant: Grade 23 plates can be selected for high‑value reactors, covers and supports where cleanliness, corrosion resistance and crack‑growth resistance under repeated clean‑in‑place and thermal cycles are critical, leveraging its use‑proven role in biomedical and high‑integrity aerospace parts.
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Conclusion
Titanium Grade 23 Plates from Aurico Alloys LLP, supplied to UNS R56407 / 3.7165 chemistry limits and ASTM B265 Grade 23 mechanical requirements, give chemical, oil & gas, marine, pharma and power‑generation users a high‑strength, extra‑low‑interstitial titanium plate option that combines the corrosion resistance of Ti‑6Al‑4V with superior fracture toughness and fatigue performance in weight‑critical, safety‑critical service are your most important offshore, process and high‑value pharma assets still relying on heavier, less damage‑tolerant materials instead of optimised Titanium Grade 23 plates?