Titanium Grade 1 Round Bar
➡️ Ti Grade 1 | UNS R50250 | W.Nr. 3.7025
➡️ 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:
R50250
Wr. No.:
3.7025
MTC Available:
EN 10204 3.1
Product Description for Titanium Grade 1 Round Bar
Titanium Grade 1 Round Bar is a solid cylindrical bar produced from commercially pure titanium UNS R50250. Bar and billet are supplied to ASTM B348 / B348M, with forgings covered by ASTM B381 and the ASME designation SB348 applying to pressure service. The material number is 3.7025.
Grade 1 is the softest and most ductile of the four commercially pure titanium grades, carrying the lowest permitted levels of oxygen and iron at 0.18% and 0.20% maximum respectively. These interstitial and substitutional limits give the highest formability and the best cold working behaviour of the family, with minimum tensile strength of 240 MPa and minimum elongation of 24%.
Corrosion resistance derives from a thin, stable, self-healing titanium dioxide film that re-forms instantly whenever oxygen or moisture is present. The metal therefore stands up to seawater, chlorides, wet chlorine, hypochlorite, nitric acid, most organic acids and a wide range of oxidising media, and it is completely immune to chloride stress-corrosion cracking. Density is 4.51 g/cm3, roughly 56% that of steel, so the alloy offers a high strength-to-weight ratio.
Bar is supplied annealed in diameters from about 6 mm to 200 mm and lengths of 3 to 6 m. The alpha structure cannot be strengthened by heat treatment, so strength above the annealed condition comes only from cold work.
Typical applications include chemical process equipment, heat exchanger and condenser components, electrodes for chlorate and chlor-alkali cells, anodising and plating racks, desalination hardware, cryogenic components and architectural fittings. Industries served include chemical processing, desalination, electroplating, marine and power generation.
Common Applications of Titanium Grade 1 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 Gr 1 Round Bar
Standard
Country / Region
Grade
ASTM B348 / B348M
USA
Grade 1 (UNS R50250) - bars and billets
ASME SB348
USA
SB348 Grade 1
ASTM B381
USA
Grade F-1 - forgings
DIN 17860 / DIN 17862
Europe / EU
Ti1 (3.7025)
JIS H4650
Japan
Class 1 (TB270 series bar)
GB/T 2965
China
TA1
ISO 5832-2
International
Commercially pure titanium, unalloyed grade 1 - surgical implant applications
Technical Specification for Titanium Grade 1 Round Bar
Specification
Value
Unit
Material
Commercially pure titanium
-
Grade
Titanium Grade 1 / UNS R50250 / 3.7025
-
Product Form
Round bar / rod / billet
-
Standard
ASTM B348 / B348M and ASME SB348
-
Diameter
6 - 200 (available range)
mm
Length
3 - 6 (standard random or fixed)
m
Manufacturing Process
Hot rolled, forged, or hot rolled and cold drawn
-
Production Route
Vacuum arc remelting of titanium sponge, hot working, annealing, pickling
-
Surface Finish
Hot-finished and pickled, peeled, rough turned, cold-drawn, ground, polished
-
Heat Treatment / Delivery Condition
Annealed
-
Annealing Temperature
650 - 760 then air cool (typical)
deg C
Maximum Continuous Service Temperature
300 (typical, oxidising conditions)
deg C
Tolerance Standard
ASTM B348 / B348M
-
Density
4.51 (typical)
g/cm3
Melting Point
1668 (approximate)
deg C
Thermal Conductivity
16.0 at 20 deg C (typical)
W/m.K
Coefficient of Thermal Expansion
8.6 at 20 - 100 deg C (typical)
micro-m/m.K
Specific Heat
523 at 20 deg C (typical)
J/kg.K
Electrical Resistivity
0.56 (typical)
micro-ohm.m
Modulus of Elasticity
105 (typical)
GPa
Magnetic Properties
Non-magnetic
-
Applicable Testing Standard
ASTM E8 / E8M, ASTM E120, ASTM E1409, ASTM E1447, ASTM E2371
-
Certification / Inspection Documents
EN 10204 Type 3.1 or 3.2 mill test certificate
-
Technical Specifications
Get the key technical specifications for Titanium Grade 1 Round Bar
Titanium Grade 1 Round Bar is supplied to ASTM B348 / B348M, which covers titanium and titanium alloy bars and billets, adopted by ASME as SB348 for pressure applications. Forgings are covered by ASTM B381 as Grade F-1.
Material is supplied annealed, typically at 650-760 deg C followed by air cooling. Grade 1 is a single-phase alpha titanium and cannot be strengthened by heat treatment, so annealing serves only to recrystallise the structure and restore maximum ductility. Higher strength is available only through cold work, which is lost if the part is subsequently annealed.
Fabrication requires titanium-specific practice. Machining should use sharp tooling, slow speeds, heavy feeds and flood coolant, since titanium has low thermal conductivity and heat concentrates at the cutting edge. Chips are pyrophoric and must be managed. Forming is straightforward given the high ductility, though springback is greater than for steel because the modulus is roughly half.
Welding is carried out by GTAW, GMAW, plasma or electron beam with full inert gas shielding of the weld pool, the root and the cooling metal, because titanium absorbs oxygen, nitrogen and hydrogen rapidly above about 500 deg C and becomes embrittled. Weld colour is used as a first-line indicator of shielding adequacy.
Testing includes tensile testing to ASTM E8 / E8M and interstitial gas analysis for oxygen, nitrogen and hydrogen to ASTM E1409, E1447 and E1937 as applicable.
Chemical Composition for Titanium Grade 1 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
%
Residual elements, each
-
-
0.10
%
Residual elements, total
-
-
0.40
%
Titanium
Ti
Balance
Balance
%
Chemical Composition
View the chemical composition and applicable material limits for Ti Gr 1 Round Bar
Titanium Grade 1 is unalloyed, so its properties are controlled entirely by the level of interstitial and residual elements rather than by deliberate alloying additions. The specification is defined by what must be kept out rather than what is put in.
Oxygen at 0.18% maximum is the single most influential element. Oxygen dissolves interstitially in the alpha lattice and is a powerful solid solution strengthener, so each increment raises strength and hardness while lowering ductility and formability. Oxygen ceilings are the main thing separating the four commercially pure grades, and Grade 1 has the lowest, so it is the softest and most formable of them.
Iron at 0.20% maximum is a substitutional element and a beta stabiliser. It contributes to strength but, more importantly, excessive iron reduces corrosion resistance by forming iron-rich intermetallic sites that can act as local cathodes. Grade 1 carries the lowest iron limit of the family, which gives it a slight edge on corrosion performance.
Nitrogen at 0.03% maximum is an even stronger interstitial strengthener than oxygen but embrittles far more aggressively, so it is held to a low level.
Hydrogen at 0.015% maximum is restricted because it precipitates as brittle titanium hydride platelets, causing delayed failure under sustained load. Carbon at 0.08% maximum is a residual from processing. Residual elements are limited to 0.10% each and 0.40% in total.
Mechanical Properties for Titanium Grade 1 Round Bar
Mechanical Property
Value
Unit
Tensile Strength
240 (minimum, annealed)
MPa
Yield Strength 0.2% Offset
138 (minimum, annealed)
MPa
Elongation in 4D or 50 mm
24 (minimum, annealed)
%
Reduction of Area
30 (minimum, annealed)
%
Hardness
Not specified by ASTM B348
HBW
Impact / Charpy V-Notch
Not required by ASTM B348 unless specified
J
Modulus of Elasticity
105 (typical)
GPa
Mechanical Properties
Check the key mechanical properties and performance requirements of Ti Gr 1 Round Bar
The values listed are the requirements of ASTM B348 / B348M for Titanium Grade 1 bar in the annealed condition. Minimum tensile strength is 240 MPa, minimum elongation in 50 mm is 24%, and minimum 0.2% offset yield strength is 138 MPa. Testing follows ASTM E8 / E8M.
All four values are minima under B348 Table 2, including reduction of area, which is a mandatory requirement for bar rather than a reported extra. B348 sets no hardness requirement, so any hardness figure on a certificate is supplied for information.
Grade 1 is a single-phase alpha alloy and cannot be strengthened by heat treatment. Annealing only recrystallises the structure and restores ductility. Cold work raises strength but the gain disappears on any subsequent annealing, and cold-worked material should not be used above the recrystallisation temperature.
Two service characteristics deserve attention. The modulus of elasticity of 105 GPa is roughly half that of steel, so a titanium component deflects about twice as much under the same load and stiffness-driven designs must be adjusted accordingly. Second, titanium galls readily against itself and against many other metals, so threaded and sliding contacts need anti-seize compound, a dissimilar mating material or a surface treatment.
Dimension / Sizes for Titanium Grade 1 Round Bar
Dimension / Size
Value
Unit
Diameter (available range)
6 - 200
mm
Standard Length
3 - 6
m
Custom Length
Cut to length on request
-
Diameter Tolerance
Per ASTM B348 / B348M
-
Length Tolerance
Per ASTM B348 / B348M or as agreed
-
Straightness Tolerance
Per ASTM B348 / B348M or as agreed
-
End Condition
Square cut, saw cut, chamfered or as ordered
-
Surface Finish
Hot-finished and pickled, peeled, rough turned, cold-drawn, ground, polished
-
Cut-to-Length Availability
Available
-
Dimensional Standard
ASTM B348 / B348M
-
Dimensions & Sizes
Explore available diameters, lengths, and dimensional requirements for Ti Gr 1 Round Bar
Pricing for Titanium Grade 1 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 1 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
What is Titanium Grade 1 Round Bar?
What standard does Titanium Grade 1 Round Bar comply with?
What is the difference between Titanium Grades 1, 2, 3 and 4?
Can Titanium Grade 1 be hardened by heat treatment?
Why is Titanium Grade 1 so corrosion resistant?
Can Titanium Grade 1 be welded?
What are the key mechanical properties of Titanium Grade 1?
What sizes and finishes are available?
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