Grade 2 Titanium Bar and Rod | ASTM B348

AVAILABLE FORMS AND SIZE REVIEW

What Grade 2 titanium bar sizes can Beiyu review?

Grade 2 RFQs can be reviewed within an overall capability envelope of round, square, flat and hexagonal bar up to 6000 mm long. Availability across the full envelope is order-specific, so the table is a manufacturing scope, not a stock list.

Bar form	Overall capability envelope	What the RFQ must define
Round bar / rod	Ø1-500 mm Length ≤6000 mm	Diameter, finish, tolerance, straightness, cut length and machining allowance
Square bar	3×3 mm to 500×500 mm Length ≤6000 mm	Section size, corner condition, dimensional tolerance, straightness and cut length
Flat bar	3×12.7 mm to 30×500 mm Length ≤6000 mm	Thickness, width, allowance on each face, flatness and length tolerance
Hexagonal bar	Across flats ≤17 mm Length ≤6000 mm	Across-flats dimension, corner condition, straightness and cut length

Precision route is separate.

A documented centerless-ground route covers Ø3.175-25.4 mm. Its tolerance and straightness controls apply only to the quoted precision program. They must not be generalized to the full Ø1-500 mm round-bar envelope.

Review the titanium bar tolerance guide

What is checked on the precision ground bar route, and how it is reported

Grade 2 bar is ordered in two different ways, and the inspection package is what separates them. The mill route is accepted against the product standard named on the order. The documented centerless ground route carries the checks below on the whole lot, stated as fields that can be verified on receipt rather than as adjectives.

Check	Coverage	What it settles
Ultrasonic flaw detection	100 percent of the lot	Internal discontinuities against the acceptance class named on the order
Eddy current	100 percent of the lot	Surface and near surface discontinuities
Optical surface inspection	100 percent of the lot	Visible surface condition along the full length
Infrared laser diameter measurement	100 percent of the lot	Diameter through the length, not a spot check at the ends
Straightness	100 percent of the lot	Bow against the published value, measured over a stated gauge length

Five checks at full coverage is a different statement from five checks performed on samples, which is why the coverage column exists. Where an order needs a tighter acceptance class or an additional examination, that belongs in the purchase order text and is reviewed before the enquiry is priced.

The published values the precision route is held to

These values apply to the documented centerless ground route covering diameters 3.175 mm to 25.4 mm. They are a production capability reviewed against, not a stock statement, and the ordered combination is confirmed at quotation.

Field	Published value	Tightened to
Diameter tolerance	±0.0127 mm (±0.0005 in)	±0.0076 mm on request
Straightness	0.5 mm per metre	0.3 mm per metre on diameters up to 25 mm, and to the drawing where the order requires tighter
Certificate	EN 10204 3.1 mill test certificate with heat number traceability	Reporting scope set by the order

These tolerance and straightness controls belong to the quoted precision program. They are not carried across to the full Ø1 to 500 mm round bar envelope, and an order that needs them on a diameter outside the ground route is a different conversation, not a tighter line on the same one. State on the enquiry which route the drawing assumes, because the same nominal diameter is a different piece of work on each.

When a 6 mm section can be ordered as either bar or wire, use the 6 mm titanium order-field guide to align the form name, tolerance, straightness, cut length and certificate wording.

PRODUCTION CONDITION AND FINISH

Choose the bar route from the next manufacturing step

The cheapest nominal diameter is not always the lowest-cost machining input. Surface route, straightness, alpha-case removal, allowance and cut strategy can alter both material yield and cycle time. Beiyu reviews the starting stock against the finished-part requirement.

Hot-worked, rolled or forged bar

Used where section size and machining stock are the main requirements. State minimum clean-up allowance, UT scope and whether the quoted size is as-worked or machined.

Peeled or machined bar

Used when the buyer needs a cleaned cylindrical surface before finish machining. State the delivery diameter and whether the drawing dimension is a stock size or a finished size.

Centerless-ground round bar

Used when diameter consistency, surface finish and straightness are purchasing controls. The permitted tolerance depends on diameter and the quoted program, not on a single sitewide number.

Cut-to-length machining blanks

Used to reduce buyer-side sawing and handling. State cut length, length tolerance, end condition, burr requirement, piece count and identification method.

STANDARD AND PURCHASE ORDER CONTROL

ASTM B348 does not replace the dimensional callout

ASTM B348 identifies the wrought titanium bar and billet route and its material acceptance requirements. The drawing or purchase order still needs to control the actual section, tolerance, length, surface, condition, inspection and certificate package.

Control	What it establishes	Buyer action
ASTM B348 Grade 2	Material grade and the ordered bar or billet specification route	Cite the specification, grade and required revision or project edition
Condition and production route	Annealed or other ordered condition; worked, peeled, machined or ground delivery route	State the required condition and do not rely on a generic product-page default
Drawing dimensions	Nominal section, tolerance, straightness, length, corner and end condition	Attach the drawing or list each controlled dimension in the RFQ
Inspection and documents	MTC, heat or lot traceability, dimensional report and any ordered NDT	State the certificate and inspection scope before quotation

Need the standard explained before buying? Read the ASTM B348 titanium bar and billet guide. The guide owns specification research; this page owns Grade 2 bar procurement.

GRADE SELECTION BOUNDARY

When is Grade 2 the right bar, and when is it not?

Grade 2 is a strong starting point when

The component needs commercially pure titanium with a balance of corrosion resistance, ductility and moderate strength.
The bar becomes a shaft, pin, spacer, threaded component or machined part used in chloride, seawater or general chemical-service equipment.
Weldability and fabrication behavior matter more than the strength-to-weight advantage of Grade 5.
The drawing or bill of material explicitly calls for ASTM B348 Grade 2 or UNS R50400.

Review another route when

Higher structural strength is the governing requirement. Review Grade 5 Ti-6Al-4V bar.
The service includes defined reducing-acid or severe hot-brine conditions. Review Grade 7 or Grade 12 with the corrosion data.
The drawing calls for implant material. ASTM F67 Grade 2 or ASTM F136 Grade 23 is a separate specification decision; ASTM B348 alone does not establish implant compliance.
The PO calls for a finished fastener standard rather than bar stock. Route the request to titanium fasteners with the finished-part drawing.

TRACEABILITY AND ACCEPTANCE

Build the inspection package into the quotation

The document scope is set by the order. A request for “certificate included” is too vague when the buyer needs heat traceability, a specific certificate format or an inspection report that can be matched to each bundle or cut blank.

Material identity

Grade, ordered specification, heat or lot identification, chemical results and mechanical results to the ordered material route.

Certificate format

Mill Test Certificate and EN 10204 3.1 inspection certificate when included in the quotation and purchase order.

Dimensional acceptance

Diameter or section, length, tolerance, straightness, surface and cut-end checks against the drawing or PO.

Additional inspection

UT, PMI, surface examination or third-party inspection when required by the specification, drawing or purchase order.

Identification and packing

Bundle or piece identification, heat-number continuity and surface protection selected for diameter, length and finish.

Release point

Inspection hold points and document approval must be agreed before production when buyer release is required.

PRODUCT EVIDENCE

Grade 2 round bar handling and storage

Grade 2 titanium round bars arranged on rack supports for ASTM B348 quotation review — Round bars arranged on separated rack supports. Final identification, surface protection and packing are confirmed by the ordered traceability and finish scope.

Grade 2 titanium round bar lengths stored on a cantilever rack — Long bars stored on a cantilever rack

Grade 2 titanium bars separated by wood supports before packing — Surface separation before packing

BUYER QUESTIONS

Grade 2 titanium bar RFQ questions

Is Grade 2 titanium bar the same as titanium rod?

In many industrial RFQs, titanium rod and round bar both describe solid round stock. The controlling terms are the ordered specification, diameter, condition, tolerance, straightness and surface route. This page uses Grade 2 round bar and rod for ASTM B348 commercial procurement, not implanted medical rods or welding filler rod.

Can Beiyu quote Grade 2 bar to a finished-part tolerance?

Beiyu can review the drawing, but the quotation must separate starting-stock dimensions from finished-part dimensions. If the request is for a machined component rather than bar stock, the RFQ should identify the finished geometry, datum scheme, tolerances, inspection plan and required machining allowance.

Does every Grade 2 bar order include EN 10204 3.1?

No. The certificate and traceability scope is order-controlled. Ask for EN 10204 3.1, MTC, heat or lot identification and any additional report in the RFQ so the required document package is included in the quotation and purchase order.

What changes Grade 2 titanium bar price and lead time?

Diameter or section, length, production route, condition, surface, tolerance, straightness, cut quantity, inspection, certificate scope, packing and current production loading all affect the quotation. Historical quote examples are not universal prices, MOQs or lead times.

Grade 2 Titanium Bar | ASTM B348 Commercially Pure Titanium