Titanium Grade 2 fasteners are common where the ability to resist these corrosion effects and a low weight are required. As a commercial grade of titanium (CP), they have nearly 99 per cent titanium with a small percentage of iron and oxygen, providing a good balance of strength, ductility and workability. The tensile strength provided by these fasteners is 345-450 MPa, and these fasteners are applicable in load-bearing and lightweight assemblies in aerospace, marine, chemical, and power sectors.
Titanium Grade 2 fasteners have one significant benefit, which is its superior corrosion resistance, especially in seawater, chlorinated, and mildly oxidising environments. Titanium Grade 2 is more thermally conductive and formable than alloyed grades, such as Grade 5 (Ti-6Al-4V) and Grade 7, and can be more easily machined, welded, and cold-formed. It welds with normal TIG or MIG processes with no preheat or post-weld heat treatment.
Grade 5 fasteners, on the contrary, have an aluminium percentage of approximately 6 and a vanadium percentage of about 4, and this has a big impact on strength and hardness. Grade 5 bolts have tensile strengths of up to 950 MPa (=138 ksi), much higher than Grade 2. Grade 5 fasteners are, however, more expensive than CP Grade 2 because they are composed of alloy. The alloy structure typically consists of approximately 0.25 per cent iron and 0.2 per cent oxygen, which enhance the overall mechanical performance.
Unifit Fastener is a reliable producer and exporter of Titanium Grade 2 bolts, nuts, washers, studs, threaded rod, and custom-designed threaded rod fasteners. The products are all made as per the ASTM B348 / ASME SB348 / DIN 3.7035 standards and sold to desalination plants, offshore, heat exchanger, and power generation units, chemical processing, and aerospace engineering.
Request QuoteTitanium Grade 2 fasteners are available in a wide array of types and configurations to suit diverse applications across aerospace, marine, chemical processing and medical industries. Below are the most common types of Titanium Gr 2 fasteners:
Unifit Fasteners Inc. produces Titanium Grade 2 fasteners according to ASTM, ASME, DIN, and ISO requirements. These fasteners are made out of high-purity titanium (UNS R50400), which is very easily welded and moderately strong, which means that these fasteners can be applied in both industry and high-performance applications. The standard specification table of our fasteners made of Titanium Grade 2 is as follows:
| Specifications | Details |
|---|---|
| Standard | ASTM B348 / ASTM F467 / ASME SB348 |
| Material Grade | Titanium Grade 2 (UNS R50400) |
| Size Range | M3 to M56 |
| Thread Type | Metric, UNF, UNC |
| Length | 3mm to 200mm |
| Standards Available | DIN, ISO, JIS, BS, ANSI, ASTM, GB |
| Form | Bolts, Nuts, Screws, Washers, Studs, Threaded Rods |
| Finish | Plain, Polished, Pickled, Passivated |
| Tensile Strength | ≥ 344 MPa |
| Yield Strength | ≥ 275 MPa |
| Elongation | ≥ 20% |
| Hardness | ≤ 160 HB |
| Temperature Resistance | Up to 400°C (752°F) |
| Density | 4.51 g/cm³ |
| Melting Point | 1665°C (3029°F) |
Titanium Grade 2 fasteners consist of commercially pure titanium (UNS R50400), which has a high corrosion resistance, high formability, and mediocre strength. Having no heavy alloying elements, they also have high biocompatibility, and can therefore be used in marine, medical, and aerospace applications. Our evidence is to ASTM B348 and ASME SB348.
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Iron (Fe) | ≤ 0.30 |
| Oxygen (O) | ≤ 0.25 |
| Carbon (C) | ≤ 0.08 |
| Nitrogen (N) | ≤ 0.03 |
| Hydrogen (H) | ≤ 0.015 |
| Other Elements (Each) | ≤ 0.10 |
| Other Elements (Total) | ≤ 0.40 |
The Grade 2 titanium fasteners have good strength, high ductility, and good heat, stress, and corrosion performances. They find extensive application in aerospace, marine, and chemical applications and also in cold-fitting, their cold-formability enables them to meet precision and custom fastener needs.
| Property | Value |
|---|---|
| Tensile Strength (Min) | 344 MPa (50,000 psi) |
| Yield Strength (0.2% offset) | 275 MPa (40,000 psi) |
| Elongation | 20% |
| Modulus of Elasticity | 105 GPa (15.2 x 10⁶ psi) |
| Hardness (Rockwell B) | 70 – 80 |
| Density | 4.51 g/cm³ |
| Reduction of Area | 30% |
Titanium Grade 2, classified under UNS R50400 is a commercially pure titanium alloy widely used in industries ranging from aerospace to marine due to its excellent corrosion resistance and moderate strength. Understanding the equivalent materials in different global standards is essential for ensuring consistency in engineering specifications especially in international projects. Below is a table showcasing the most recognized equivalents of Titanium Grade 2 across global material standards:
| Standard | Designation / Equivalent | Description |
|---|---|---|
| ASTM | B348 (Grade 2), F67 | Specification for titanium bars, forgings, etc. |
| ASME | SB-348 | Boiler and Pressure Vessel Code equivalent |
| UNS | R50400 | Unified Numbering System designation |
| EN / DIN | 3.7035 | European and German equivalent |
| ISO | 5832-2 | Surgical implant material equivalent |
| JIS | T3250 (TP340) | Japanese Industrial Standard |
| BS | 2TA11 | British Standard |
| GOST | VT1-0 | Russian equivalent |
Grade 2 Titanium fasteners have a stable oxide layer that will resist corrosion, although in some applications additional finishes will be needed to enhance wear resistance or conductivity. The marine, offshore and chemical environments are the main areas of application of the use of coating as protection is required. The most commonly used coating techniques are:
Titanium Grade 2 is known as DIN 3.7035 in Europe and is commonly used in stud bolts due to its resistance to corrosion, low weight and medium strength. These are stud bolts used in chemical, marine, and offshore. A conventional size chart of the DIN 3.7035 Titanium Grade 2 stud bolts in metric measurements is below:
| Nominal Diameter (M) | Thread Pitch (mm) | Length Range (mm) | Standard Nut Size (Across Flats) | Approx. Weight (kg/100 pcs) |
|---|---|---|---|---|
| M6 | 1.0 | 20 – 100 | 10 mm | 0.85 |
| M8 | 1.25 | 25 – 120 | 13 mm | 1.30 |
| M10 | 1.5 | 30 – 150 | 17 mm | 2.10 |
| M12 | 1.75 | 35 – 180 | 19 mm | 3.00 |
| M16 | 2.0 | 40 – 200 | 24 mm | 4.90 |
| M20 | 2.5 | 50 – 250 | 30 mm | 7.80 |
| M24 | 3.0 | 60 – 300 | 36 mm | 11.50 |
| M27 | 3.0 | 60 – 300 | 41 mm | 13.90 |
| M30 | 3.5 | 70 – 320 | 46 mm | 17.30 |
| M36 | 4.0 | 80 – 350 | 55 mm | 25.50 |
Titanium Grade 2 flat washers evenly distribute the load at the same time giving a very high degree of corrosion resistance and good strength-to-weight ratio. They comply with DIN, ISO, and ASME end-to-end industrial requirements. Standard dimensions according to DIN 125 / ISO 7089 are listed in the table below:
| Washer Size (Nominal ID) | Outer Diameter (OD) | Thickness (mm) | Weight per Piece (grams) |
|---|---|---|---|
| M6 | 12 mm | 1.6 | 1.0 g |
| M8 | 16 mm | 1.6 | 1.6 g |
| M10 | 20 mm | 2.0 | 2.8 g |
| M12 | 24 mm | 2.5 | 4.8 g |
| M16 | 30 mm | 3.0 | 8.2 g |
| M20 | 37 mm | 3.0 | 12.7 g |
| M24 | 44 mm | 4.0 | 19.5 g |
| M30 | 56 mm | 4.0 | 30.6 g |
Titanium Grade 2 flat washers are precision components designed to distribute the load of threaded fasteners, such as bolts and nuts, while offering excellent corrosion resistance and strength-to-weight ratio. These washers conform to various dimensional standards like DIN, ISO, and ASME, ensuring compatibility with different industrial systems. The table below outlines the standard dimensions of flat washers made from Titanium Grade 2 as per DIN 125 / ISO 7089 specifications:
| Nominal Size (mm) | Inner Diameter (ID) | Outer Diameter (OD) | Thickness (T) |
|---|---|---|---|
| M3 | 3.2 mm | 7.0 mm | 0.5 mm |
| M4 | 4.3 mm | 9.0 mm | 0.8 mm |
| M5 | 5.3 mm | 10.0 mm | 1.0 mm |
| M6 | 6.4 mm | 12.0 mm | 1.6 mm |
| M8 | 8.4 mm | 16.0 mm | 1.6 mm |
| M10 | 10.5 mm | 20.0 mm | 2.0 mm |
| M12 | 13.0 mm | 24.0 mm | 2.5 mm |
| M16 | 17.0 mm | 30.0 mm | 3.0 mm |
| M20 | 21.0 mm | 37.0 mm | 3.0 mm |
| M24 | 25.0 mm | 44.0 mm | 4.0 mm |
| M30 | 31.0 mm | 56.0 mm | 4.0 mm |
Despite their lightweight nature, they offer high tensile strength and excellent corrosion resistance. Understanding their weight per unit helps in project planning and cost estimation, especially for bulk requirements. Below is a reference chart for estimating the approximate weight of Titanium Grade 2 hex bolts based on diameter and length:
| Bolt Diameter (mm) | Length (mm) | Approx. Weight (grams) |
|---|---|---|
| M6 | 20 | 4.5 |
| M8 | 25 | 8.2 |
| M10 | 30 | 13.5 |
| M12 | 40 | 22.8 |
| M16 | 50 | 42.6 |
| M20 | 60 | 68.3 |
| M24 | 70 | 102.7 |
| M30 | 90 | 188.5 |
Titanium Grade 2 fasteners strike the perfect balance between performance, weight, and corrosion resistance, making them a preferred choice across industries. Here's why they stand out:
Titanium Grade 2 fasteners are trusted across a wide range of demanding industries for their exceptional strength-to-weight ratio, corrosion resistance, and biocompatibility. Their versatility makes them a preferred choice in environments where both performance and durability are critical.
Areas of Application:
By installing Titanium Grade 2 fasteners, you are not purchasing hardware, you are choosing legendary dependability in critical applications. Although prices of these fasteners may vary with the type of product, size, finish and quantity ordered, the long-term performance of such fasteners can be considered as a viable solution to the overall cost in the long-term.
The lightweight strength, corrosion resistance and the use in hostile environments make Titanium Grade 2 to have a very good value proposition. The pricing structure can be affected by customization, precision machining and international compliance as well.
It is always better to get a quote on your project depending on your specifications such as quantities, specifications and delivery schedules to ensure that you get the best values on your project. Your suppliers are also trusted and can advise you on how to maximize on cost when making bulk or recurring orders.
When precision, performance, and trust matter, top industries turn to us. As a leading manufacturer and global supplier of Titanium Grade 2 fasteners, we deliver engineering excellence backed by years of metallurgical expertise and customer-first reliability.
Our manufacturing is powered by advanced CNC technology, strict process control, and in-house labs that ensure every fastener meets global benchmarks like ASTM B348 and DIN 3.7035. Whether it’s hex bolts for marine applications or stud bolts for high-stress aerospace assemblies, each piece is built to perform under pressure literally.
With a robust inventory and scalable production, we support urgent and large-scale requirements with ease. Our supply network spans key markets across the globe, making us a preferred partner for EPC contractors, OEMs and critical infrastructure projects.
What sets us apart? Consistent quality, zero compromise on standards, and a commitment to delivering more than just products - we deliver peace of mind.
Titanium Grade 2 fasteners offer excellent corrosion resistance, high strength-to-weight ratio, and outstanding biocompatibility, making them ideal for critical and demanding applications.
Yes, they are highly resistant to saltwater corrosion, making them an excellent choice for marine and offshore applications.
Common standards include ASTM B348, ASME SB348, DIN 3.7035, and ISO specifications, depending on the type and application of the fastener.
Absolutely. They can be manufactured in various sizes, threads, and surface finishes such as passivation, epoxy coating, and mirror buffing, as per project requirements.
While both offer corrosion resistance, Titanium Grade 2 is significantly lighter and more resistant to aggressive environments, making it preferable in high-performance and weight-sensitive industries.