Boze Titanium Manufacturing Center | Titanium Grades Reference Hub · ASTM/AMS/ISO

The Buyer's Guide to Titanium Grades & Alloys

Authoritative selection reference for Grade 2, Grade 5 (Ti-6Al-4V), Grade 7 (Ti-0.15Pd), Grade 12 (Ti-0.3Mo-0.8Ni), and Grade 23 (Ti-6Al-4V ELI) — with chemistry, mechanical properties, applicable ASTM/AMS/ISO standards, and CNC machining guidance. AS9100D · · ISO 9001 · EN 10204 3.1 MTR.

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5 Core Grades
UNS / ASTM Authoritative IDs
AS9100D Aerospace Quality
Medical Quality
Ti-6Al-4V Ti-0.15Pd Ti-0.3Mo-0.8Ni UNS R56400 UNS R52400 EN 10204 3.1

Decision Tree: Which Titanium Grade Do I Need?

Start with the dominant requirement of your application. The grade choice flows from there.

Aerospace structures or engines ▼

Grade 5 (Ti-6Al-4V) per AMS 4928 / ASTM B348 — or Grade 23 ELI for cryogenic or fracture-critical components per AMS 4930.

Surgical implants or medical devices ▼

Grade 23 (Ti-6Al-4V ELI) per ASTM F136 / ISO 5832-3 — the medical standard. ELI Grade 4 (ASTM F67) for non-load-bearing devices.

Reducing acids or hot chloride service ▼

Grade 7 (Ti-0.15Pd) for the most aggressive reducing environments; Grade 12 (Ti-0.3Mo-0.8Ni) for cost-effective chloride service.

Seawater, hydrofoils, superyacht hardware ▼

Grade 2 (CP-Ti) for general marine service; Grade 5 for structural components; Grade 19 (Ti-10V-2Fe-3Al) for high-strength subsea parts.

Heat exchangers, tanks, general industrial ▼

Grade 2 (CP-Ti) is the workhorse for chemical, desalination, and power-generation service. Grade 1 if you need maximum formability.

Side-by-Side Property Matrix

Side-by-side comparison of the 5 core grades. Click any grade for the full data sheet.

Property Grade 2 Grade 5 Grade 7 Grade 12 Grade 23
UNS UNS R50400 UNS R56400 UNS R52400 UNS R53400 UNS R56401
Classification Commercially Pure Titanium (Alpha Phase) Alpha-Beta Titanium Alloy (α+β) Commercially Pure Titanium (Alpha Phase) + Pd Stabilizer Near-Alpha Titanium Alloy (α + minor β) Alpha-Beta Titanium Alloy (α+β) — ELI Modification
Tensile Strength 345 MPa (50 ksi) 895 MPa (130 ksi) 345 MPa (50 ksi) 483 MPa (70 ksi) 860 MPa (125 ksi)
Yield Strength (0.2%) 275 MPa (40 ksi) 828 MPa (120 ksi) 275 MPa (40 ksi) 345 MPa (50 ksi) 795 MPa (115 ksi)
Elongation 20% 10% 20% 18% 10%
Density 4.51 g/cm³ (0.163 lb/in³) 4.43 g/cm³ (0.160 lb/in³) 4.51 g/cm³ 4.51 g/cm³ 4.43 g/cm³ (0.160 lb/in³)
Max Service Temp 316°C (600°F) 400°C (750°F) 316°C (600°F) 316°C (600°F) — short exposure to 350°C 316°C
Full data sheet View full grade data sheet → View full grade data sheet → View full grade data sheet → View full grade data sheet → View full grade data sheet →

Grade Detail Cards

Each card includes chemistry (per ASTM B348 / B265), mechanical properties (Rm, Rp0.2, A5, hardness, density), applicable standards, and primary application areas.

Grade 2

Commercially Pure Titanium

UNS R50400

The most widely used commercially pure titanium grade, balancing strength, formability, and corrosion resistance.

Classification
Commercially Pure Titanium (Alpha Phase)
Tensile Strength
345 MPa (50 ksi)
Yield Strength (0.2%)
275 MPa (40 ksi)
Elongation
20%
Density
4.51 g/cm³ (0.163 lb/in³)
Max Service Temp
316°C (600°F)

Applicable Standards

  • ● ASTM B265 — Sheet, Strip, and Plate
  • ● ASTM B348 — Bars and Billets
  • ● ASTM B381 — Forgings

Primary Applications

  • — Chemical processing — Process vessels, piping, heat exchangers for corrosive media
  • — Marine & offshore — Seawater cooling systems, ballast piping, fire mains
  • — Desalination — Thermal and membrane-based desalination equipment
View full grade data sheet →

Grade 5

Ti-6Al-4V Titanium Alloy

UNS R56400

The most widely used titanium alloy — the industry workhorse for aerospace, medical, and high-performance applications.

Classification
Alpha-Beta Titanium Alloy (α+β)
Tensile Strength
895 MPa (130 ksi)
Yield Strength (0.2%)
828 MPa (120 ksi)
Elongation
10%
Density
4.43 g/cm³ (0.160 lb/in³)
Max Service Temp
400°C (750°F)

Applicable Standards

  • ● ASTM B265 — Sheet, Strip, and Plate
  • ● ASTM B348 — Bars and Billets
  • ● ASTM B381 — Forgings

Primary Applications

  • — Aerospace — Airframes, engines, fasteners (largest consuming sector)
  • — Medical — Orthopedic and dental implants, surgical instruments
  • — Defense & military — Armor, aircraft components, naval systems
View full grade data sheet →

Grade 7

Ti-0.15Pd Corrosion-Resistant Titanium

UNS R52400

Commercially pure titanium with 0.12–0.25% palladium addition for the most aggressive reducing-acid and chloride environments.

Classification
Commercially Pure Titanium (Alpha Phase) + Pd Stabilizer
Tensile Strength
345 MPa (50 ksi)
Yield Strength (0.2%)
275 MPa (40 ksi)
Elongation
20%
Density
4.51 g/cm³
Max Service Temp
316°C (600°F)

Applicable Standards

  • ● ASTM B265 — Sheet, Strip, and Plate
  • ● ASTM B348 — Bars and Billets
  • ● ASTM B381 — Forgings

Primary Applications

  • — Chemical processing — Equipment for reducing acids, chlorides, and wet corrosive streams
  • — Oil & gas — Downhole and topside chloride-rich service
  • — Pharmaceutical — Process equipment requiring high purity and corrosion resistance
View full grade data sheet →

Grade 12

Ti-0.3Mo-0.8Ni Titanium Alloy

UNS R53400

Cost-effective corrosion resistance — nearly matches Grade 7 in reducing acids at a lower palladium-free price point.

Classification
Near-Alpha Titanium Alloy (α + minor β)
Tensile Strength
483 MPa (70 ksi)
Yield Strength (0.2%)
345 MPa (50 ksi)
Elongation
18%
Density
4.51 g/cm³
Max Service Temp
316°C (600°F) — short exposure to 350°C

Applicable Standards

  • ● ASTM B265 — Sheet, Strip, and Plate
  • ● ASTM B348 — Bars and Billets
  • ● ASTM B381 — Forgings

Primary Applications

  • — Chemical processing — Heat exchangers, piping, and tanks for reducing-acid and chloride service
  • — Oil & gas — Topside chloride-rich process piping
  • — Desalination — Thermal and membrane process equipment
View full grade data sheet →

Grade 23

Ti-6Al-4V ELI Medical Titanium

UNS R56401

Extra-low interstitial Ti-6Al-4V with superior fracture toughness for medical implants and cryogenic service.

Classification
Alpha-Beta Titanium Alloy (α+β) — ELI Modification
Tensile Strength
860 MPa (125 ksi)
Yield Strength (0.2%)
795 MPa (115 ksi)
Elongation
10%
Density
4.43 g/cm³ (0.160 lb/in³)
Max Service Temp
316°C

Applicable Standards

  • ● ASTM F136 — Wrought Titanium-6Al-4V ELI for Surgical Implant Applications
  • ● ASTM B265 — Sheet, Strip, and Plate (when specified as ELI)
  • ● ASTM B348 — Bars and Billets (ELI)

Primary Applications

  • — Medical — Orthopedic, spinal, dental, and cardiovascular implants
  • — Cryogenic — LNG processing, liquid hydrogen storage and transport
  • — Aerospace — Low-temperature structural components, high-reliability fasteners
View full grade data sheet →

Interactive Comparison Tool

Select 1–3 grades to compare side-by-side. The URL stays shareable — copy it to send the comparison to your team.

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International Standards Coverage

ASTM B348

→ Standard detail page

Bars and Billets — covers Grade 2, 5, 7, 12, 23 (and all other unalloyed + alloyed Ti grades).

ASTM B265

→ Standard detail page

Sheet, Strip, and Plate — same grade coverage as B348.

ASTM F136

→ Standard detail page

Wrought Ti-6Al-4V ELI (Grade 23) for Surgical Implants.

ASTM F67

→ Standard detail page

Unalloyed Titanium for Surgical Implants (CP-Ti Grade 1–4 ELI).

AMS 4928

→ Standard detail page

Grade 5 (Ti-6Al-4V) Bars, Wire, and Forgings — aerospace standard.

AMS 4930

→ Standard detail page

Grade 23 (Ti-6Al-4V ELI) Bars and Forgings — aerospace + medical.

ISO 5832-3

→ Standard detail page

Wrought Ti-6Al-4V alloy for surgical implants (international medical standard).

MIL-T-9047

→ Standard detail page

US military spec for Ti sheet/strip/plate (Grades 1, 2, 3, 4, 5, 23).

Quality Systems & Material Traceability

Every order ships with EN 10204 Type 3.1 mill test reports (MTRs) and full heat-to-part traceability. Our quality systems are independently certified for aerospace, medical, and industrial service.

AS9100D

Aerospace QMS

Medical Devices QMS

ISO 9001:2015

Quality Management

EN 10204 3.1

Mill Test Report (MTR)

Engineering RFQ for Your Selected Grade

Our applications engineers will respond within 24 hours with DFM feedback, lead time, and a formal quote. Secure CAD upload supported (STEP, IGES, Parasolid, native).

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