BOZE CNC Ti | CP Titanium Grade

Grade 2 – Commercially Pure Titanium Grade 2

Commercially Pure Titanium Grade 2 (UNS R50400) — the workhorse CP titanium grade offering an optimal balance of mechanical strength, ductility, corrosion resistance, and weldability. The most commonly specified CP grade for industrial applications worldwide.

Entity Definition

What is Grade 2 Titanium?

Grade 2 is the most commonly specified commercially pure titanium grade, offering a balanced combination of strength, ductility, corrosion resistance, and weldability. It accounts for the majority of CP titanium usage in industrial applications and is often considered the baseline grade for titanium material selection.

Classification

Commercially Pure Titanium (Alpha Phase)

UNS Number

UNS R50400

Common Names

CP-Ti Grade 2 UNS R50400 Ti Grade 2 ASTM B265 Grade 2 Ti-2

Key Characteristics

Most widely used CP titanium grade — industry baseline for many applications
Excellent corrosion resistance in seawater, chlorides, and oxidizing acids
Good balance of strength and formability for fabrication
Excellent weldability — no post-weld heat treatment typically required
Biocompatible and non-magnetic

Applicable Standards

Grade 2 titanium conforms to the following international material standards:

ASTM B265 — Sheet, Strip, and Plate

ASTM B348 — Bars and Billets

ASTM B381 — Forgings

ASTM B861 — Seamless Pipe

ASTM B862 — Welded Pipe

AMS 4902 — Sheet, Strip, and Plate (Commercially Pure Titanium)

AMS 4928 — Bars and Wire

ISO 5832-2 — Implants for Surgery

DIN 17850 — Titanium Grade 2 (Ti 2)

NACE MR0175 / ISO 15156 — Sulfide Stress Cracking Resistant Materials for Oilfield Equipment

Material Properties

Mechanical & Physical Properties

Typical room-temperature properties for Grade 2 titanium (annealed condition):

Tensile Strength (min) 345 MPa (50 ksi)

Yield Strength 0.2% Offset (min) 275 MPa (40 ksi)

Elongation (min) 20%

Reduction of Area 30%

Hardness (HRB) ≤ 80 HRB

Density 4.51 g/cm³ (0.163 lb/in³)

Elastic Modulus 105 GPa (15.2 × 10⁶ psi)

Melting Point 1,668°C (3,034°F)

Thermal Conductivity 17 W/(m·K)

Electrical Resistivity 55 µΩ·cm

Max Service Temperature (Oxidizing) 316°C (600°F)

Max Service Temperature (Reducing) 260°C (500°F)

Processing Methods

Available Processing Methods

Grade 2 titanium can be processed using the following manufacturing techniques:

Cold forming — Good; moderate deformation possible without intermediate annealing

Hot forming — Readily formable at 260–540°C (500–1,000°F)

CNC machining — Fair; requires sharp carbide tools and adequate coolant flow

TIG welding — Excellent; most common joining method for CP titanium

Laser welding — Good weld quality with inert gas shielding on both sides

Resistance welding — Suitable for spot welding with proper process control

Forging — Open and closed-die forging at 870–980°C (1,600–1,800°F)

Extrusion — Hot extrusion at 900–1,050°C using glass lubricants

Chemical etching / pickling — Good response to HF/HNO₃ solutions

Anodizing — Type II and Type III anodizing for corrosion and wear protection

Downstream Products

Typical Products & Components

Grade 2 titanium is commonly fabricated into the following downstream products:

Chemical processing equipment — reactors, columns, heat exchangers

Seawater piping systems and marine risers

Desalination plant evaporator shells and tubing

Ball valves, gate valves, and butterfly valve bodies

Pump casings and impellers for corrosive service

Heat exchanger tube sheets and tube bundles

Architectural cladding, roofing panels, and curtain wall systems

Automotive exhaust components

Medical implants (non-load-bearing) per ISO 5832-2

Electrochemical cells and anodes

Industries

Primary Industries

Grade 2 titanium serves as a material of choice across these industries:

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

Oil & gas — Topside piping, heat exchangers, produced water treatment

Architecture — Building facades, roofing, coastal infrastructure

Medical — Surgical instruments, non-load-bearing implants

Pulp & paper — Bleaching towers, washer drums, chemical mixers

Power generation — Condenser tubing, FGD scrubber internals

Alternative Materials

Depending on application requirements, Grade 2 may be substituted by:

Grade 1 (CP-Ti) — Higher formability, lower strength than Grade 2

Grade 3 (CP-Ti) — Higher strength, less ductility than Grade 2

Grade 12 (Ti-0.3Mo-0.8Ni) — Superior corrosion resistance in reducing environments

316L Stainless Steel — Lower cost but susceptible to chloride stress corrosion cracking

Super Duplex Stainless Steel (UNS S32750) — Higher strength alternative with good corrosion resistance

Nickel Alloy 625 — Better high-temperature strength and corrosion resistance at higher cost

Why BOZE CNC Ti

Why Choose Us for This Grade

BOZE CNC Ti is a trusted manufacturer of Grade 2 commercially pure titanium components for the chemical processing, marine, oil & gas, and architectural industries. Our facility processes certified CP-Ti stock through 5-axis CNC milling, precision turning, and custom fabrication. Every component is backed by full material traceability, MTR documentation, and CMM inspection. Our engineering team provides 24-hour DFM review and competitive quoting for industrial and marine applications.

Frequently Asked Questions

Common questions from engineers about this titanium grade and our precision machining capabilities.

What is Grade 2 titanium and why is it the most widely used commercially pure grade?

Grade 2 is the most commonly specified commercially pure titanium grade, offering an optimal balance of strength, ductility, corrosion resistance, and weldability. It is the default choice for industrial applications requiring excellent seawater corrosion resistance, good formability, and moderate strength.

Can you machine Grade 2 titanium into custom industrial components?

Yes. We machine Grade 2 CP-Titanium on our 5-axis CNC centers and precision turning machines. Grade 2 offers good machinability for a titanium alloy. We achieve tolerances up to ±0.005 mm with excellent surface finishes for chemical processing, marine, and industrial components.

What documentation do you provide with Grade 2 titanium parts?

Every order includes EN 10204 Type 3.1 Material Test Reports (MTRs) documenting chemical composition and mechanical properties per ASTM B265. CMM dimensional inspection reports and NDT (ultrasonic/penetrant) testing are available upon request.