Titanium Grade 2
Bolt & Nut
Fasteners Manufacturer
What Is Titanium Grade 2 (CP Ti)
Titanium Grade 2 is the most widely used of the four commercially pure (CP, unalloyed) titanium grades defined under ASTM B265/B348. Unlike titanium alloys such as Grade 5 (Ti-6Al-4V), Grade 2 contains no deliberate alloying elements — its properties come from controlling interstitial oxygen, iron, carbon, nitrogen, and hydrogen content within tight limits, which is precisely what makes it so consistently weldable, formable, and corrosion resistant.
Chemical composition (max, wt%): Oxygen 0.25, Iron 0.30, Carbon 0.08, Nitrogen 0.03, Hydrogen 0.015, balance Titanium. This tight interstitial control is what separates Grade 2 from Grade 1 (softer, more ductile) and Grade 3/4 (higher strength, lower ductility) within the CP titanium family.
Mechanical properties: minimum tensile strength of 345 MPa (50 ksi), minimum yield strength of 275 MPa (40 ksi), and a minimum elongation of 20% — giving Grade 2 a genuinely useful balance of moderate strength with excellent ductility and formability, at a density of just 4.51 g/cm³, roughly 40% that of steel.
Where Titanium Grade 2 Genuinely Earns Its Cost
Corrosion Resistance in Chlorides
A stable, self-healing titanium oxide film gives Grade 2 resistance to seawater, chloride solutions, and oxidizing acids that outperforms austenitic stainless in sustained marine exposure.
High Strength-to-Weight Ratio
At roughly 40% the density of steel while matching or exceeding common structural steel strength grades, Grade 2 removes weight from an assembly without giving up load capacity.
Non-Magnetic Behaviour
Fully non-magnetic under all conditions, making Grade 2 the reliable default for MRI-adjacent equipment, sensitive instrumentation, and shipboard compass-safe fastening zones.
Biocompatibility
ISO 5832-2 compliant CP titanium is the standard material for surgical implant fastening, given its proven long-term tissue compatibility and absence of an allergenic response in most patients.
Titanium Grade 2 vs Stainless Steel Fasteners
Titanium Grade 2 is not simply “better stainless” — it’s a different set of trade-offs. Where corrosion life, weight, and non-magnetic behaviour justify the material cost, Grade 2 pays for itself; where the application doesn’t need those specific properties, 316 stainless remains the more economical, equally sound choice. The comparison below is the one we walk through with buyers before quoting, so the material selection is deliberate rather than assumed.
| Property | Titanium Grade 2 | Stainless Steel 316 |
|---|---|---|
| Density | 4.51 g/cm³ | 7.98 g/cm³ (~77% heavier) |
| Tensile Strength (min) | 345 MPa | 515 MPa |
| Yield Strength (min) | 275 MPa | 205 MPa |
| Chloride / Seawater Resistance | Excellent — no pitting | Good, but pitting risk over time |
| Magnetic Behaviour | Fully non-magnetic | Mostly non-magnetic (may vary with cold work) |
| Biocompatibility | ISO 5832-2 implant grade | Not typically implant grade |
| Galvanic Compatibility with Carbon Fibre | Good — standard in aerospace | Requires isolation in most cases |
| Relative Material Cost | Higher | Lower |
Titanium Grade 2 Product Range
Hex Bolts
Full metric & imperial range, ASTM B348 / F67
Hex Nuts
Standard, thin, and self-locking configurations
Stud Bolts
Full-thread and tap-end, ASTM A193/B7-equivalent grades
Washers
Flat, spring, and sealing washer profiles
Socket Head Cap Screws
Hex socket drive, aerospace & precision assembly grade
Titanium Grade 2 Technical Specifications
Interstitial Limits (max, wt%)
- Oxygen (O) 0.25
- Iron (Fe) 0.30
- Carbon (C) 0.08
- Nitrogen (N) 0.03
- Hydrogen (H) 0.015
- Titanium (Ti) Balance
Strength & Ductility (min)
- Tensile Strength 345 MPa
- Yield Strength (0.2%) 275 MPa
- Elongation 20%
- Density 4.51 g/cm³
- Melting Point 1668°C
- Magnetic Permeability Nil
Available Dimensions
- Metric Diameter M3 – M36
- Imperial Diameter 1/8″ – 1.5″
- Bolt Length Up to 300mm
- Stud Length Custom to drawing
- Finish As-machined / Anodized
- Testing MTC / NABL on request
Application Areas
Wherever corrosion life, weight, or non-magnetic behaviour is the deciding factor.
Aerospace & Airframe
weight-critical assemblies
Medical & Surgical Implants
implant-grade fastening
Marine & Desalination
boat fittings, RO plant fastening
Chemical Processing
equipment fastening
Motorsport & Performance
suspension, engine hardware
Architecture & Facades
long-life exterior fastening
Sensitive Instrumentation
compass-safe marine fastening
General Industrial
corrosion-critical fastening
Standard Export Documentation
Prepared as standard practice for every Titanium Grade 2 shipment.
Mill Test Certificate (MTC)
Heat number, chemical composition, and mechanical property verification for every lot.
Certificate of Conformance
Confirms the shipment matches the purchase order specification and grade in full.
Certificate of Origin (COO)
Confirms India as country of manufacture for destination customs purposes.
Commercial Invoice & Packing List
Itemized value, Incoterm, and detailed carton/weight breakdown for customs clearance.
NABL Accredited Test Reports
Independent mechanical and chemical testing available on request for critical applications.
Bill of Lading
Ocean or air freight shipping document confirming carrier, mode, and consignee details.
Internationally Recognised Standards Coverage
Related Fastener Grades & Materials
Titanium Grade 5 Fasteners
Higher-strength alpha-beta titanium alloy for structural aerospace applications.
View Grade 5 →Stainless Steel 316 Fasteners
The economical corrosion-resistant alternative where titanium properties aren’t required.
View SS 316 →Super Duplex Fasteners
High strength and severe chloride resistance for demanding process environments.
View Super Duplex →Hastelloy B-3 Stud Bolts
Nickel-molybdenum alloy fastening for reducing acid and severe corrosion service.
View Hastelloy B-3 →Sourcing Titanium
Grade 2 Fasteners?
Size · quantity · standard · finish. Akbar Fasteners Pvt. Ltd. responds within 24 hours with pricing and mill test documentation.
Sales: +91 724 0000 733 · Support: +91 800 9315 333 · sales@akbarfasteners.in