Titanium Grade 11 Round Bar
➡️ Ti Grade 11 | UNS R52250 / UNS R52550 | EN 3.7225
➡️ ASTM, EN, JIS & International Standards
➡️ Supply Conditions
➡️ Multiple Diameters & Supply Lengths
➡️ Global Export & International Delivery
Country of Origin:
Europe, Japan, USA
Material Type:
Titanium
UNS Number:
R52250 / UNS R52550
Wr. No.:
3.7225
MTC Available:
EN 10204 3.1
Product Description for Titanium Grade 11 Round Bar
Titanium Grade 11 Round Bar is commercially pure titanium on a Grade 1 base, with 0.12–0.25% palladium. It carries UNS number R52250 and material number 3.7225, and bar is supplied to ASTM B348, with ASME SB348 for pressure parts.
Using Grade 1 as the base gives lower oxygen and iron than Grade 7, so the metal is softer and stretches further before it breaks. The palladium is at the same level as Grade 7, so the protection in dilute reducing acids and hot chloride crevices is the same.
Bars come annealed and are non-magnetic. Grade 11 is the softest and most formable of the palladium titanium grades. It is chosen for parts that are heavily cold formed, deep drawn or used as linings and clad layers, where the extra ductility of the Grade 1 base helps avoid cracking. It gives the same resistance to reducing acids and hot brine crevices as Grade 7. A lower-palladium version, Grade 17, is available for a lower cost where the corrosion margin allows. Common users are chemical plants that handle dilute hydrochloric or sulfuric acid, chlorate and chlorine dioxide units, and brine systems where crevices under gaskets are a risk. Bar is used for flanges, bolts, fittings and small shafts. Clad plate makers also use the Grade 1 base because it bonds and forms easily. Where the service allows a lower palladium content, Grade 17 can reduce cost. Bars are often supplied cut to length. Check stock before designing parts around it. Ground bar is available.
Common Applications of Titanium Grade 11 Round Bar
➡️ Machined shafts, spindles, valve stems, pump sleeves and pins for food, beverage, dairy and pharmaceutical equipment, where the passive chromium oxide film resists both product acids and caustic clean-in-place chemicals.
➡️ Fasteners, studs, bolts, threaded rod and anchor components produced from bar stock, chosen for corrosion resistance combined with the ductility needed for cold heading and thread rolling.
➡️ Chemical, water treatment and general process plant parts such as agitator shafts, flange blanks, nozzles and support components handling water, steam and mildly corrosive media free of significant chlorides.
➡️ Architectural and structural hardware including handrail stanchions, balustrade fittings, tension rods and bollards, where a bright ground or polished bar finish provides both appearance and low maintenance.
International Equivalent Grade for Ti Grade 11 Round Bar
Standard
Country / Region
Grade
UNS
USA
UNS R52250 / UNS R52550
ASTM
USA
ASTM B348 Grade 11
EN
Europe
EN 3.7225
JIS
Japan
TA9-1 / JIS Class 11
GB/T
China
TA9-1
KS
South Korea
KS Class 11 / Grade 11
Technical Specification for Titanium Grade 11 Round Bar
Specification
Value
Unit
Material
Titanium
-
Grade
Grade 11 / UNS R52250
-
Standard
ASTM B348 / ASME SB348
-
Product Form
Round bar
-
Diameter (supply range)
6–300
mm
Length (random)
1–6
m
Manufacturing Process
Hot rolled or forged, then annealed and finished
-
Production Route
VAR (vacuum arc remelting) or EB / plasma cold hearth melting
-
Surface Finish
Descaled, turned, ground or polished
-
Heat Treatment / Delivery Condition
Annealed
-
Tolerance Standard
Per ASTM B348 tolerance tables or as agreed
-
Density
4.51
g/cm³
Thermal Conductivity at 20°C
16.4
W/m·K
Coefficient of Thermal Expansion 20–100°C
8.6
µm/m·K
Modulus of Elasticity at 20°C
103
GPa
Magnetic Properties
Non-magnetic
-
Testing / Inspection
Chemical analysis incl. interstitials, tensile, dimensional, UT on request
-
Certification
EN 10204 3.1 mill test certificate
-
Technical Specifications
Get the key technical specifications for Titanium Grade 11 Round Bar
Titanium Grade 11 Round Bar is ordered as UNS R52250 to ASTM B348 in the annealed condition.
Grade 11 is annealed at about 650–760°C. Certificates should report palladium and all interstitials, plus tensile results and dimensions.
ASTM B348 and ASME SB348 cover Grade 11 bar in the annealed condition, and the ASME code allowable stresses are the same as for Grade 1 because the strength is the same. Bar is used mainly for fittings, fasteners and machined parts in equipment built from Grade 11 sheet, plate or clad plate, where matching material avoids galvanic and weld problems. Because Grade 11 is less common than Grade 7, bar stocks are limited, and buyers may be offered Grade 7 instead. Grade 7 is stronger but less ductile, so check with the designer before accepting a substitution.
Grade 11 bar is less common than Grade 7, so check stock early. Tolerances follow ASTM B348 tables. When bar is machined into fasteners, confirm that the low strength is acceptable for the joint design, because Grade 11 bolts carry less load than Grade 7 bolts of the same size.
Chemical Composition for Titanium Grade 11 Round Bar
Element
Symbol
Min
Max
Unit
Nitrogen
N
-
0.03
%
Carbon
C
-
0.08
%
Hydrogen
H
-
0.015
%
Iron
Fe
-
0.20
%
Oxygen
O
-
0.18
%
Palladium
Pd
0.12
0.25
%
Residuals each
-
-
0.1
%
Residuals total
-
-
0.4
%
Titanium
Ti
Balance
-
%
Chemical Composition
View the chemical composition and applicable material limits for Ti Grade 11 Round Bar
The table shows the ASTM B348 limits for Grade 11. The interstitial limits match Grade 1: oxygen at 0.18% maximum and iron at 0.20% maximum. These are the lowest in the palladium grades and give the lowest strength and highest ductility. Palladium at 0.12–0.25% is the same as in Grade 7, so corrosion resistance in reducing acids and brine crevices is the same. Nitrogen, carbon and hydrogen are held at the same limits as other CP grades. Grade 17 uses the same Grade 1 base with lower palladium, about 0.04–0.08%, which reduces cost but also the safety margin in aggressive acids.
Any single residual in Grade 11 may not exceed 0.1%, and the total may not exceed 0.4%. The certificate should show palladium clearly, and XRF checks on received bar can confirm it, since Grade 11 looks the same as Grade 1 and Grade 2.
Keeping oxygen low is what gives the extra ductility, so heats near the top of the oxygen range will be slightly stronger and less formable. Titanium makes up the balance. Residual iron should also be checked.
Mechanical Properties for Titanium Grade 11 Round Bar
Mechanical Property
Value
Unit
Tensile Strength (ASTM B348)
≥ 240
MPa
Yield Strength 0.2% (ASTM B348)
138–310
MPa
Elongation (ASTM B348)
≥ 24
%
Reduction of Area (ASTM B348)
≥ 30
%
Mechanical Properties
Check the key mechanical properties and performance requirements of Ti Grade 11 Round Bar
The table gives the ASTM B348 requirements for annealed Grade 11, including a yield strength range. ASTM B348 requires Grade 11 bar to reach tensile strength of at least 240 MPa, yield strength of 138–310 MPa, elongation of at least 24% and reduction of area of at least 30%. This is the same as Grade 1. The low yield strength and high elongation make Grade 11 easy to cold form, bend and flare, but it is not suited to parts that carry high loads. It keeps good toughness at low temperature. For higher strength with the same corrosion resistance, Grade 7 or Grade 24 can be considered.
Bend or flaring tests are sometimes added for parts that will be heavily formed, to prove the bar will not crack.
Bolts and studs in Grade 11 carry less load than Grade 7 bolts of the same size, so designers should check joint preload. Toughness at low temperature is excellent. Design loads should use the minimum yield. Elongation of 24% minimum allows tight bends and flares on fittings. Strength falls with temperature, so hot parts need derating.
Dimension / Sizes for Titanium Grade 11 Round Bar
Dimension / Size
Value
Unit
Available Diameter Range (supply capability)
6–300
mm
Standard Length (random)
1–6
m
Custom / Cut-to-Length
Available on request
-
Diameter Tolerance
Per ASTM B348 tolerance tables or as agreed
-
Length Tolerance
Per ordered standard or as agreed (commonly +50 / -0 mm for cut lengths)
-
Straightness Tolerance
Per ASTM B348 or as agreed
-
End Condition
Saw cut square, chamfered or as ordered
-
Surface Finish
Descaled, sandblasted, pickled, rough turned, turned, centreless ground or polished
-
Dimensions & Sizes
Explore available diameters, lengths, and dimensional requirements for Ti Grade 11 Round Bar
Pricing for Titanium Grade 11 Round Bar
Round Bar Prices are generally quoted per kilograms or meters tonnes and can fluctuate with the global raw material and market prices. The final price will depend on a variety of factors, including the grade size, diameter, length, surface finish, the quantity and whether the bars are cut to length or in standard lengths.
For smaller quantities, we can also quote per metre or per piece basis once the required dimensions have been confirmed. Container-loads or orders that are larger in size are typically priced per tonne, based upon the specifications required and the supply conditions.
Please provide your desired dimensions, grades, length number, and end for a current quote including the lead time applicable and details for certification.
Pricing
Get current Titanium Grade 11 Round Bar pricing based on size, quantity, grade, finish, and delivery requirements.
Why Choose Us
Euro Steel Bars is an international distributor, stockist and exporter of stainless round steel bars that cover carbon, stainless alloy, special grades. We stock a variety of sizes and grades. We guarantee every order with mill test certificates as well as full quality-assurance documentation. Our name speaks to our roots: European-sourced materials that is backed by the certificates and rigor that buyers from Asia as well as the Gulf and Africa are looking for.
Each bar we deliver is accompanied by EN 10204 3.1 mill test certificates as well as complete documentation of quality, so what you receive corresponds to what’s written in the documents. We carry a selection of sizes and grades ready for transport, and cut length upon the request of customers, which results in quicker lead times, whether you’re ordering just a one-off spec or a complete project tonnage.
We operate an actual wholesale business that is that is supported with an internationally-operated supply chain therefore we are able to serve fabricators sourcing one grade the same way in the same way as an EPC contractor who is placing a large order. Our clients include manufacturers, fabricators EPC construction companies, engineers oil and gas projects as well as construction companies. we design our inventory as well as documentation to show what buyers need to bring projects forward.
Our customers trust us across Qatar, Oman, Bahrain, Kuwait, Jordan, Malaysia, Singapore, Thailand, Taiwan, Turkey, Italy and South Africa. If you’re looking to source an Gulf energy project, or a construction project within Southeast Asia, you get the same quality of certified material, the exact documentation, and the exact delivery procedure.
Frequently Asked Questions
Should I choose Titanium Grade 11 or Grade 7?
What is the difference between Titanium Grade 11 and Grade 7?
What is Titanium Grade 17?
Where is Titanium Grade 11 used?
How is Titanium Grade 11 welded and machined?
What are the limits of Titanium Grade 11?
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