Titanium fasteners are best known for being strong, lightweight, and corrosion resistant. They are critical to many industries including chlor alkali, marine, off-shore oil & gas, desalination, medical, and pulp and paper. Grade 2 and 5 are the most commonly used grades of titanium screws:
• Grade 2 (UNS R50400 / 3.7035) :Commercially pure titanium and the most common grade for screws.
• Grade 5 (UNS R56400 / 3.7165): Superior strength-to-weight ratio for a unique combination of corrosion and high strength.
Unique for its strength, lightness of weight and corrosion resistance
Excellent strength to weight ratio
Practically inert to chloride, chlorines and seawater
Mechanical Properties: tensile, yield & elongation charts
Titanium Grade 2, 5, 7 and 23 chemistry & specifications
Datasheets for Grade 2 and Grade 5
Titanium fastener styles
Titanium FAQ of the Week
Fastener stock & availability
Corrosion Resistance
Saltwater
Perhaps the most notable attribute of titanium fasteners are their superior corrosion resistance to salt water / seawater. Titanium screws have the unique ability to rapidly regrow their protective passive layer in the presence of oxygen, giving them unparalleled resistance to salt water environments.
• Proven resistance in decades of polluted seawater
• Usable in ocean depths of a mile beneath the surface
• Resistant to high velocity, rapidly moving currents as well as stagnant seawater
• Not affected by the presence of sulfides in seawater
• Ideal for sea splash and tide zones
• Seawater resistant to temperatures as high as 500°F (260°C)
Chloride, Chlorine & Other Media
Similar to salt water, titanium’s strong, protective oxide film which regenerates in oxygen makes it extremely resistant to oxidizing environments, and chlorides solutions, including hypochlorites, chlorates, perchlorates, sodium chlorite, and chlorine dioxide. This protection holds true as long as moisture is present – which can be as little as 50ppm of moisture. Oxidizing environments in the absence of water can cause titanium to rapidly corrode or even ignite. Titanium screws are not resistant to reducing media and acids
Lightweight Strength
Not only are titanium grade 5 fasteners extremely strong, offering 148 ksi UTS and 138ksi yield they are also incredibly light. With a density of 4.51 g /cm3, titanium has on of the the highest strength-to-weight ratios available to industry. Titanium Grade 5 screws are 4 times stronger than 316 stainless steel at nearly half the weight. This makes titanium fasteners ideal for applications that require both lightness of weight and excellent strength such medical, military and sporting goods.
Which Grade is Best for Your Application?
The most common grades of of Titanium fasteners are Grade 2 (commercially pure Ti) and Grade 5 (Ti 6Al-4V - high strength). Still not sure? With decades of materials expertise and industrial experience, our engineers can help you select the best titanium fastener for your application.
Custom Availability
Diameter sizes: Standard #00 – 4” in diameter / Metric M1.2 – M100
Threads: UNC, UNF, UNJ, UNR, Rolled,Cut
Minimum Volume – Typically 10pcs, depending on size and stock
Custom to print
Titanium Fastener Styles
| Titanium Screws | 12 Point Screws Button Head Cap Screws Flat Head Screws Hex Head Cap Screws Pan Head Screws Security Screws Set Screws Socket Head Cap Screws Vented Screws
| • DIN 603 / ISO 8677 • DIN 912 / ISO 4762 • DIN 913 / ISO 4026 • DIN 914 / ISO 4027 • DIN 915 / ISO 4028 • DIN 916 / ISO 4029 • DIN 921 • DIN 931 / ISO 4014 • DIN 933 / ISO 4017 • DIN 961 / ISO 8676 • DIN 965 / ISO 7046 • DIN 966 / ISO 7047 • DIN 7991 / ISO 10642 • DIN 7380 / ISO 7380 • DIN 84 / ISO 1207 • DIN 85 / ISO 1580 • DIN 34822 • DIN 34821 • DIN 7504 / ISO 15480 • DIN 7984 • DIN 963 / ISO 2009 |
| Titanium Bolts | Hex Head Bolts Shoulder Bolts Wedge Anchor Bolts
| • DIN 931
• DIN 933
• ISO 4014
• ISO 4017
• ISO 7370 |
| Titanium Nuts | | • DIN 439 / ISO 4035
• DIN 934 / ISO 4032
• DIN 985 / ISO 7040
• DIN 986
• DIN 980 / ISO 7042 / ISO 19513
• DIN 6923 / ISO 4161 |
| Titanium Studs/Rod | Studs Threaded Rod Weld Studs
| • DIN 975
• DIN 976 |
| Titanium Washers | | • DIN 125 / ISO 7089 / ISO 7090
• DIN 126 / ISO 7091
• DIN 127 / ISO 7090
• DIN 9021 / ISO 7093 |
| Titanium Hose Clamps | Medium Duty Hose Clamps Worm Drive Hose Clamps
|
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Titanium Screws
12 Point Screws | Titanium 12 point screws allow for higher torque to be applied than a socket head cap screw or head head bolt, however they are be less economical due to the complex head design. Available in 1/4" or larger sizes. | • IFI-115
• MIL SPEC
• DIN 34822
• DIN 34821 |
Button Head Cap Screws | Titanium button head screws offer a wide clamping area and low profile. They are best for fastening material that is too thin to counter bore. | • ASME B18.3
• ASME 18.3.4M
• DIN 7380 / ISO 7380 |
Flat Head Screws | Titanium flat head screws are most commonly offered in an 82° countersink angle, but can be customized to other angles from 60° -120° and are designed to be flush with the surface. Available in slotted and socket drivers. Phillips, 6-lobe, torx and tamperproof drivers in Titanium flat head screws can be made require special manufacturing. | • ASME B18.3
• ASME B18.3.6
• DIN 963 / ISO 2009
• DIN 965 / ISO 7046
• DIN 7991 / ISO 10642 |
Hex Head Cap Screws | Titanium hex head cap screws offer the added washer face to the bolt head which is lacking on a hex bolt and tighter dimensional tolerances. Ideal for a high clamping force applications with ease of access. Generally availabe in #2 - 1/2" sizes and metric sizes. | • ASME B18.6.3
• DIN 931 / ISO 4014
• DIN 933 / ISO 4017
• DIN 961 / ISO 8676 |
Pan Head Screws | Titanium pan head screws offer a rounded top are best used for small diameter faster needs. Offered in slotted and they are ideal for low torque applications. | • ASME B18.6.3
• DIN 7985
• DIN 921
• DIN 85 / ISO 1580
• DIN 84 / ISO 1207
(cheese head)
• DIN 966 / ISO 7047
(raised counter sunk) |
Security Screws | Unique driver designs offer these Titanium screws resistance to unwanted tampering or removal due to the fact that they cannot be removed using an ordinary driver. Titanium security screws are available in several different drive styles, as well as custom per print. |
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Set Screws | Titanium set screws are available in cup, cone, flat, dog and half-dog points. Set screws have no head and are equiped with a socket or slotted driver at one end. | • ASME B18.3
• DIN 913 / ISO 4026
• DIN 914 / ISO 4027
• DIN 915 / ISO 4028
• DIN 916 / ISO 4029 |
Socket Head Cap Screws | Titanium socket head cap screws are ideal for limited access situations where there is little clearance around the screws. They offer a safe, reliable and economic solution. | • ASMET B18.3
• DIN 912 / ISO 4762
• DIN 7984 |
Vented Screws | Titanium vented screws are best for vacuum environments because the hole drilled through its axis (from head through threads) allow gases and other contaminents to vent. Titanium vented screws are available in any style. |
|
Titanium Bolts
Hex Head Bolts | Titanium hex bolts are similar to hex head cap screws but without the added washer face. They are ideal for high clamping force applications with ease access. | • ASME B18.2.1
• DIN 931 / ISO 4014
• DIN 933 / ISO 4017 |
Shoulder Bolts | Titanium shoulder bolts are made up of a head, shoulder and threaded segment. The smooth shoulder section allows for rotating parts. Typically available with socket drivers. | • ASME
• DIN 7379 / ISO 7379
• ISO 7370 |
Wedge Anchor Bolts | Titanium wedge anchor bolts offer a safe secure fastening solution for attaching equipment and other materials to concrete in corrosive environments. |
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Titanium Nuts
Hex Nuts | Titanium hex nuts are available in a variety of styles including finished hex nuts, jam nuts and heavy hex nuts. | • ASME B18.16.3
• ASME B18.2.2
• DIN 439 / ISO 4035
• DIN 934 / ISO 4032
• DIN 986 |
Lock Nuts | Titanium lock nuts are available in all metal and polymer insert styles. All-metal lock provide even load distribution and can be used at high temperatures. Polymer insert styles are more economical and are best for temperatures under than 350°F. | • ASME B18.16.3M
• DIN 980 / ISO 7042 /
ISO 19513
• DIN 6923 / ISO 4161
• DIN 985 / ISO 10511 /
ISO 7040 |
Titanium Studs & Threaded Rods
 Studs | Titanium studs are fully threaded or partially threaded and made to custom lengths. | • ASME B18.31.2
• DIN 976 |
Threaded Rod | Titanium threaded rod or all thread are available in lengths greater than 1 foot. Minimum order quantity is a total of 6 feet of length. | • ASME B1.1
• DIN 975 |
Weld Studs | Titanium weld studs are available in both arc or capacitor discharge (CD) styles. Weld studs provide an extremely secure fastening solution when one side of the stud needs to be permanently fix to a part and the other side with the threads accessible. |
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Titanium Washers
Flat Washers | Titanium washers are most commonly offered in SAE sizes, but also availabe in USS, oversized and custom sizes upon request. | • ASME 18.21.1
• SAE / USS
• DIN 125 / ISO 7089 /
ISO 7090
• DIN 126 / ISO 7091 |
Lock Washers | Titanium lock washers are offered as split lock washers. Belleville spring lock washers can also be made upon request. | • ASME B18.21.1
• DIN 127 / ISO 7090
• DIN 6796 / ISO 10690
|
Titanium Grades, Chemistry & Specifications
Titanium Grade 2 / UNS R50400 / 3.7035 (Commercially Pure)
Unalloyed titanium; Commercially pure titanium is the most common grade of titanium utilized throughout industry due to its ease of availability and good properties.
Titanium Grade 2 Specifications: UNS R50400, ASTM B 348, AMS 4921, ASTM F 67, ISO 5832-2, EN
3.7035, ASTM F467 (Nuts), ASTM F468 (Bolts, Screws, Studs)
| Titanium Grade 2 | Ti | Fe | O | C | N | H |
| Min% | - | - | - | - | - | - |
| Max% | Bal | 0.30 | 0.25 | 0.08 | 0.03 | 0.015 |
Titanium Grade 5 (Ti 6Al-4V) / UNS R56400 / 3.7165
Known as the “workhorse” of the titanium alloys, Ti 6Al-4V, or Grade 5 titanium, is 2x stronger than titanium grade 2. This alloy offers high strength and light weight, useful formability and high corrosion resistance. Ti 6AI-4V finds many uses in the aerospace, medical, marine and chemical processing industries.
Titanium Grade 5 Specifications: UNS R56400, EN 3.7165, ASTM - B265, B348, B381, B861, F467 and F468, AMS - 4911, 4928, 4935, 4965 and 4967, MIL-T - 9046 and - 9047, EN 3.7165, ASTM F467 (Nuts), ASTM F468 (Bolts, Screws, Studs)
| Titanium Grade 5 | Ti | Al | V | Fe | O | C | N | H |
| Min% | - | 5.5 | 3.5 | - | - | - | - | - |
| Max% | Bal | 6.75 | 4.50 | 0.30 | 0.20 | 0.08 | 0.05 | 0.0150 |
Titanium Grade 7 (Ti-0.15Pd) / UNS R52400 / 3.7235
Grade 7 is the most corrosion resistant of all titanium alloys and is typically used in chemical processes and production equipment components. Similar to Grade 2, but with the addition of 0.12 to 0.25% palladium, Grade 7 has enhanced corrosion resistance to reducing acids and localized attack in hot halides.
Titanium Grade 7 Specifications: ASTM - B265, B337, B338, B348, B363, B381, B861 and B862, EN 3.7235, ASTM F467 (Nuts), ASTM F468 (Bolts, Screws, Studs)
| Titanium Grade 7 | Ti | Fe | Pd | O | C | N | H |
| Min% | - | - | 0.12 | - | - | - | - |
| Max% | Bal | 0.30 | 0.25 | 0.25 | 0.08 | 0.03 | 0.0150 |
Titanium Grade 23 (TI 6AL-4V ELI) / UNSR56401 / 3.7165
Titanium grade 23 or TI 6AL-4V ELI is an Extra Low Intersticial grade. This grade is similar to Grade 5, but because of the low intersticials, its mechanical properties are enhanced. This ELI grade is often found in more demanding medical device applications as well as industrial applications.
Titanium Grade 23 Specifications: UNS R52400, ASTM - B265, B348, B363, B381, B861, B862 andF136, AMS - 4907, 4930 and 4956, EN 3.7165, ASTM F467 (Nuts), ASTM F468 (Bolts, Screws, Studs)
| Titanium Grade 23 | Ti | Al | V | Fe | O | C | N | H |
| Min% | - | 5.5 | 3.5 | - | - | - | - | - |
| Max% | Bal | 6.50 | 4.50 | 0.25 | 0.13 | 0.08 | 0.03 | 0.0125 |
Mechanical Properties
TITANIUM GRADE 2 - Tensile Data
| Temperature(°F) | Ultimate Tensile(ksi) | Yield Strength at0.2% Offset (ksi) | Elongation% |
| Room Temp. | 70 | 50 | 28 |
| 212 | 56 | 37 | 31 |
| 392 | 41 | 28 | 37 |
| 572 | 33 | 18 | 43 |
| 752 | 27 | 13 | 38 |
| 842 | 26 | 11 | 34 |
TITANIUM GRADE 5 - Tensile Data
| Temperature(°F) | Ultimate Tensile (Ksi) | Yield Strength at0.2% Offset (ksi) | Elongation% |
|
| Room Temp. | 13S | 128 | 14 |
| 300 | 121 | 105 | 16 |
| 500 | 110 | 93 | 17 |
| 700 | 100 | 82 | 18 |
TITANIUM GRADE 7 - Tensile Data
| Temperature(°F) | Ultimate Tensile(Ksi) | Yield Strength at0.2% Offset (ksi) | Elongation% |
| Room Temp. | 50 | 40 | 20 |
| 200 | 57 | 40 | 28 |
| 400 | 41 | 24 | 41 |
| 600 | 32 | 15 | 38 |
Titanium's Resistance to Chlorine
| GRADE 2 |
| Media | Temperature °F | Corrosion Rate mpy (mm/y) |
| Wet Chlorine | 50-130 | Nil-0.02 (0.001) |
| Water Saturated,Chlorine Cell Gas | 190 | 0.055 (0.002) |
| Dry Chlorine | 36 | Rapid Attack, Ignition |
Corrosion Data
Studs
