Titanium Grade 2 Round Bar
➡️ Ti Grade 2 | UNS R50400 | W.Nr. 3.7035
➡️ 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:
R50400
Wr. No.:
3.7035
MTC Available:
EN 10204 3.1
Product Description for Titanium Grade 2 Round Bar
Titanium Grade 2 Round Bar is a solid cylindrical bar produced from commercially pure titanium UNS R50400. 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 3.7035.
Grade 2 is by a wide margin the most widely used titanium grade, accounting for the majority of all commercially pure titanium consumed. It occupies the practical optimum between strength and formability, with maximum oxygen of 0.25% and iron of 0.30%, giving a minimum tensile strength of 345 MPa, a minimum 0.2% yield strength of 275 MPa and minimum elongation of 20%. It is often described as the workhorse grade of the titanium industry.
Corrosion resistance comes from a stable, self-healing titanium dioxide film and is essentially identical to Grade 1. The alloy resists seawater, chlorides, wet chlorine, hypochlorite, nitric acid, most organic acids and a broad range of oxidising media, and is immune to chloride stress-corrosion cracking. At 4.51 g/cm3 it weighs roughly 56% as much as steel while carrying comparable strength to mild steel.
Bar is supplied annealed in diameters from about 6 mm to 250 mm and lengths of 3 to 6 m. The alpha structure cannot be strengthened by heat treatment.
Typical applications include heat exchanger and condenser tube sheets, chemical process vessels and internals, desalination plant hardware, marine fittings and shafts, pulp and paper bleaching equipment, medical and dental components, and architectural and offshore hardware. Industries served include chemical processing, desalination, marine, power generation, medical devices and pulp and paper.
Common Applications of Titanium Grade 2 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 2 Round Bar
Standard
Country / Region
Grade
ASTM B348 / B348M
USA
Grade 2 (UNS R50400) - bars and billets
ASME SB348
USA
SB348 Grade 2
ASTM B381
USA
Grade F-2 - forgings
DIN 17860 / DIN 17862
Europe / EU
Ti2 (3.7035)
JIS H4650
Japan
Class 2
GB/T 2965
China
TA2
ISO 5832-2
International
Commercially pure titanium, unalloyed grade 2 - surgical implant applications
Technical Specification for Titanium Grade 2 Round Bar
Specification
Value
Unit
Material
Commercially pure titanium
-
Grade
Titanium Grade 2 / UNS R50400 / 3.7035
-
Product Form
Round bar / rod / billet
-
Standard
ASTM B348 / B348M and ASME SB348
-
Diameter
6 - 250 (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
16.4 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 2 Round Bar
Titanium Grade 2 Round Bar is supplied to ASTM B348 / B348M for titanium and titanium alloy bars and billets, adopted by ASME as SB348 for pressure service. Forgings are covered by ASTM B381 as Grade F-2. Where the material is intended for surgical implants, ISO 5832-2 or ASTM F67 applies instead and imposes additional cleanliness and microstructure requirements.
Bar is supplied annealed, typically at 650-760 deg C followed by air cooling. Grade 2 is a single-phase alpha titanium and is not hardenable by heat treatment, so annealing serves only to recrystallise the structure and restore ductility. Stress relief at approximately 480-595 deg C is used to remove residual stress from machining or forming without significant loss of strength.
Machining requires titanium practice: sharp tooling, low cutting speeds, heavy positive feeds, rigid setups and flood coolant, since the low thermal conductivity concentrates heat at the cutting edge. Fine chips and grinding dust are pyrophoric and must be controlled.
Welding by GTAW, GMAW, plasma or electron beam is straightforward provided the weld pool, root and cooling metal are fully shielded with inert gas, since titanium absorbs oxygen, nitrogen and hydrogen rapidly above about 500 deg C.
Testing includes tensile testing to ASTM E8 / E8M and interstitial gas analysis for oxygen, nitrogen and hydrogen. Ultrasonic examination and hydrostatic or pressure testing may be added by agreement.
Chemical Composition for Titanium Grade 2 Round Bar
Element
Symbol
Min
Max
Unit
Nitrogen
N
-
0.03
%
Carbon
C
-
0.08
%
Hydrogen
H
-
0.015
%
Iron
Fe
-
0.30
%
Oxygen
O
-
0.25
%
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 2 Round Bar
Titanium Grade 2 is unalloyed, so its behaviour is governed by controlled levels of interstitial and residual elements rather than by deliberate alloying. The specification defines maximum limits rather than target additions.
Oxygen at 0.25% maximum is the most influential element and the one that principally separates Grade 2 from Grade 1. Oxygen dissolves interstitially in the alpha lattice and strengthens it powerfully, so the higher ceiling raises minimum tensile strength from 240 MPa in Grade 1 to 345 MPa in Grade 2, at the cost of some ductility and formability. That level turns out to be the practical sweet spot for general engineering use, and it is why Grade 2 accounts for most commercial consumption.
Iron at 0.30% maximum is a substitutional beta stabiliser. It contributes modestly to strength, but the limit exists mainly to protect corrosion performance, since iron-rich intermetallic particles can act as local cathodic sites.
Nitrogen at 0.03% maximum strengthens even harder than oxygen, but it embrittles much faster, so the limit stays tight.
Hydrogen at 0.015% maximum is limited because it precipitates as brittle titanium hydride platelets, which cause delayed failure under sustained load. Hydrogen pickup during pickling or service in reducing acids is a genuine concern and is monitored by gas analysis.
Carbon at 0.08% maximum is a processing residual. Other residual elements are limited to 0.10% individually and 0.40% in total, with titanium making up the balance.
Mechanical Properties for Titanium Grade 2 Round Bar
Mechanical Property
Value
Unit
Tensile Strength
345 (minimum, annealed)
MPa
Yield Strength 0.2% Offset
275 (minimum, annealed)
MPa
Elongation in 4D or 50 mm
20 (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 2 Round Bar
The values listed are the requirements of ASTM B348 / B348M for Titanium Grade 2 bar in the annealed condition. Minimum tensile strength is 345 MPa, minimum 0.2% offset yield strength is 275 MPa, and minimum elongation in 50 mm is 20%. Testing follows ASTM E8 / E8M.
All four values are minima under B348 Table 2. There is no upper limit on yield strength for bar, so a heat running near the top of its practical range simply behaves more like Grade 3. B348 sets no hardness requirement for any of these grades.
Grade 2 is single-phase alpha titanium and cannot be strengthened by heat treatment. Annealing recrystallises the structure and restores ductility, and stress relief at 480-595 deg C removes residual stresses without significant strength change. Cold work raises strength but is lost on subsequent annealing.
Two design considerations follow from the material rather than the specification. The modulus of elasticity of about 105 GPa is roughly half that of steel, so components deflect about twice as much under equal load and stiffness-critical designs must be resized. Titanium also galls severely against itself and many other metals, so threads and sliding surfaces require anti-seize compound, dissimilar mating materials or surface treatment.
Dimension / Sizes for Titanium Grade 2 Round Bar
Dimension / Size
Value
Unit
Diameter (available range)
6 - 250
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 2 Round Bar
Pricing for Titanium Grade 2 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 2 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 2 Round Bar?
What standard does Titanium Grade 2 Round Bar comply with?
What is the difference between Titanium Grade 1 and Grade 2?
Can Titanium Grade 2 be hardened by heat treatment?
What are the key mechanical properties of Titanium Grade 2?
Can Titanium Grade 2 be welded?
Where is Titanium Grade 2 commonly used?
What sizes and finishes are available?
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