Which titanium grades are available?

All grades: GR1 and GR2 commercially pure, GR5 (Ti-6Al-4V), GR23 (Ti-6Al-4V ELI, ASTM F136), GR7 and GR16 Ti-Pd alloys, GR9 (Ti-3Al-2.5V), GR12 and others. The partner melts from titanium sponge, so material is prepared to the standard called out on your drawing — ASTM B348, B265, B338, F67, F136, AMS 4928 and so on.

Can you supply medical device parts? Doesn't the partner need ISO 13485?

Yes — we are supplying a Ti-6Al-4V ELI (ASTM F136) housing to a medical device customer in production after sample validation. Device approval is obtained at finished-device level by the device maker or Tier 1; at the machined-part level what is usually required is the medical material grade, the mill test certificate, the dimensional report and traceability. Octud provides these per part, and if your file needs more — biocompatibility documentation, third-party tests — tell us at intake and we will confirm scope.

What does the mill test certificate contain?

EN 10204 3.1 format: heat number, chemical composition (Ti, Al, V, Fe, C, N, H, O), tensile results (tensile strength, yield strength, elongation, reduction of area), ultrasonic testing, PMI, visual and dimensional checks. Because the partner melts its own material, every lot traces back to the melt.

Can I start with just a few samples?

Yes. Small samples → your test → production is the default sequence; our first medical project started with five samples and moved to production. Acceptance criteria and surface requirements are fixed at the sample stage.

Do you really need a 3D model? I only have a PDF.

A PDF is enough to quote, but we take the 3D model (STEP) before production. Dimensions that projections don't fully capture — cavity depth, concentricity of curved surfaces — surface as production queries and stop the schedule. If there is no 3D, Octud lists the items to confirm from the 2D first.

Can you do mirror polishing or a specified surface roughness?

We have delivered mirror-polished parts. Put the required roughness (Ra) and the polished area on the drawing; we review the method and validate on samples. Other finishes such as anodising or blasting are agreed item by item.

How are duties and customs handled?

Octud imports and clears the goods and delivers in Korea. We obtain the China–Korea FTA certificate of origin for preferential duty, and you buy domestically on a Korean tax invoice. Direct delivery outside Korea can be arranged separately.

Welded structures and assemblies too?

Yes. The partner runs automatic plasma welding, producing titanium tanks, housings, heat exchangers and strainers as well as combined machined-and-welded parts.

Metals other than titanium?

Stainless 316L, duplex (S32750, S32760), aluminium (6061, 7075), nickel alloys, zirconium, tantalum and niobium at the same partner. For high-heat polymer parts (PPSU, PEEK) see the parts supply page.

TITANIUM PARTS

Titanium machined parts, supplied by Octud from your drawing

Octud's titanium parts service produces CNC-machined parts in every titanium grade and in specialty metals from the customer's drawing (PDF + STEP) at an ISO 9001 certified partner manufacturer, and delivers them in Korea with the mill test certificate (EN 10204 3.1) and dimensional inspection report.

CNC-machined titanium and titanium-alloy parts (GR2, GR5, Ti-6Al-4V ELI and more), quoted and supplied from your drawing and quantity. We work with an ISO 9001 certified titanium specialist in Baoji, the centre of China's titanium industry, that melts its own material and carries it through machining and inspection under one roof. Octud delivers in Korea with the mill test certificate (EN 10204 3.1), dimensional inspection report and FTA certificate of origin. Medical device parts are in series supply after sample validation.

01Drawing & quantity
02Material, process & dimension review
03Partner quotation → samples
04Inspection → delivery in Korea → production

What to send: 2D drawing (PDF) + 3D model (STEP) · quantity · grade and standard · tolerances · surface requirements (roughness, polishing) · required documents (MTC etc.) · service environment
Where we work most: Medical device parts · electrolyser stacks · semiconductor equipment · marine · chemical plant

Email the drawing instead: grit@octud.com

Send a drawing, get a quote

Reply within 24 hours. Drawings are used for quotation and manufacture only.

CompanyContact nameEmailPhone

MaterialProcessQuantityApplication

Service conditions · tolerances · surface · required documents

Drop drawing files here or click to select2D (PDF · DWG · DXF) + 3D (STEP · IGES · X_T) together — 50 MB per file, up to 5 files

Please include the 3D model (STEP). Starting from 2D alone stops production for dimension checks.

I agree to the processing of my details and the use of the drawing for quotation.Collected: company, contact, email, phone, attached drawings. Retained one year after the enquiry is closed. Drawings are shared with the partner manufacturer only as far as needed for quotation, under the same confidentiality obligation.

If the file is too large or upload fails · grit@octud.com

Precision CNC-machined block — multiple threaded ports and counterbores — Precision CNC machining — threaded port block

Machined rings, flanges and bushings — bolt holes and internal threads — Rings · flanges · bushings

Machined fittings, flanges and studs — internal threads and tapped holes — Fittings · flanges · fasteners

CNC turning, milling, threading, deep-hole drilling and welded combinations — if it is on the drawing, we machine it in the specified grade.

Materials & standards

Every titanium grade. If the grade is not fixed yet, tell us the service environment — material selection is part of the job.

Titanium — element symbol Ti, atomic number 22, atomic mass 47.867

Material	Grade	Typical standards	Character · typical use
Commercially pure Ti	GR1 · GR2	ASTM B348 (bar) · B265 (plate) · B338 (tube) · F67 (medical)	Highest corrosion resistance and formability. Seawater and chemical plant, heat exchangers, medical devices (GR2).
Ti-6Al-4V	GR5	ASTM B348 · AMS 4928	The workhorse high-strength alloy. Structural and equipment parts, lightweighting.
Ti-6Al-4V ELI	GR23 (GR5 ELI)	ASTM F136	Extra-low interstitials (O, N, Fe) for higher toughness and fracture resistance. Implants, surgical instruments, medical housings.
Ti-Pd alloys	GR7 · GR16	ASTM B348 · B265	Palladium addition for resistance in reducing acids. Chemical reactors and piping.
Ti-3Al-2.5V	GR9	ASTM B338 · B348	Medium strength, weldable. Tubing, pressure housings, light structures.
Ti-0.3Mo-0.8Ni	GR12	ASTM B348 · B265	Crevice-corrosion resistance. Seawater heat exchangers, chloride service.

Beyond titanium: stainless 316L · duplex (S32750 · S32760) · aluminium (6061 · 7075) · nickel alloys · zirconium · tantalum · niobium. The standard called out on the drawing governs; the table lists representative examples.

By grade

PARTNER MANUFACTURER

Our partner manufacturer — melt to inspection under one roof

Octud's titanium parts are made by a titanium specialist in Baoji, Shaanxi, China. Baoji is the industrial cluster where more than half of China's titanium is produced, and this company has exported titanium and specialty-metal machined products from there since 2007. It is not a job shop that buys bar and cuts it: it melts titanium sponge into its own material, then machines, inspects and certifies that material itself, so traceability is never broken.

Founded · scale: Founded 2007 · 7,000 m² plant · titanium, tantalum, niobium, nickel and zirconium alloys
Quality system: ISO 9001 certified · technical cooperation with a national non-ferrous metals research institute · issues its own EN 10204 3.1 certificates
Melting · material: In-house VAR (vacuum arc remelting) — titanium sponge feedstock, double-VAR melting, forging, rolling, vacuum annealing
Machining: CNC machining centres · CNC turning · deep-hole drilling · wire EDM · automatic plasma welding · elbow piercing · hydraulic tee forming · mirror polishing
Inspection: CMM (coordinate measuring machine) · optical spectrometer (PMI) · ultrasonic testing · hardness tester · digital height gauge · micrometers
Export record: 20 years of export to 20+ countries across Europe, North America, Asia, the Middle East and Oceania — titanium machined products for marine equipment, underwater robotics, subsea connector, dredging and oilfield companies

Production record: subsea pressure housings · underwater camera, battery and sensor housings (1,000–6,000 m rating) · ballast tanks · thrusters · subsea connector fittings · threaded bushings · heat exchangers (tube, spiral, shell-and-tube) · reactors · strainers · flanges · fasteners · tubes · fittings · pump components · valves

The partner's name is not published to protect the relationship. For projects that need an audit or site visit, we arrange it under NDA.

Documents that come with the parts

You don't just get parts. Octud collates the documents your purchasing, quality and regulatory people need and ships them with the goods.

Mill test certificate (MTC, EN 10204 3.1)

Chemical composition (Ti, Al, V, Fe, C, N, H, O), tensile tests (TS, YS, elongation, reduction of area), ultrasonic testing, PMI, visual and dimensional checks. Heat number traceability from melt to part.

Dimensional inspection report

Measured values per drawing dimension, by CMM, micrometer and height gauge. Actuals recorded on ±0.02 mm-class toleranced features.

China–Korea FTA certificate of origin

Original issued. Preferential duty on titanium machined products (HS 8108.90) imported into Korea.

Commercial invoice · packing list

Octud clears import customs. Korean customers buy domestically with a Korean tax invoice.

Additional documents (on request)

Biocompatibility such as ISO 10993 within the material maker's documentation; third-party testing agreed item by item.

Applications

Wherever titanium's corrosion resistance, biocompatibility or strength-to-weight is needed. These are the fields Octud serves or where the partner has a production record.

MEDICAL

Medical devices

Implants, surgical instruments, handpieces, diagnostic equipment housings. Machined from medical material grades — ASTM F136 (Ti-6Al-4V ELI), F67 (CP Ti) — with part-level MTC and dimensional reports to support the Tier 1 or finished-device maker's regulatory file. Items in series supply after sample validation.

HYDROGEN

Hydrogen · energy

Porous transport layers (PTL), bipolar plates, end plates and fittings for PEM electrolyser stacks. Titanium is the standard material in acidic, high-potential service.

SEMICON

Semiconductor · display

Corrosion-resistant in-chamber parts, jigs and gas-line fittings. Low-contamination, high-corrosion-resistance titanium.

MARINE

Marine · shipbuilding · subsea

Seawater heat exchangers, subsea pressure housings, valves, flanges, fasteners. The partner's core field, with housings rated to 6,000 m.

CHEMICAL

Chemical plant

Reactors, heat exchangers, strainers, pump components. Grade selection by environment — GR7, GR12 and others.

INDUSTRIAL

General industry · lightweighting

Converting stainless or aluminium parts to titanium, light structural parts, fasteners, custom connectors.

CASE

Case — Ti-6Al-4V ELI medical housing, from samples to production

A titanium housing for a Korean medical device customer. It started from a single PDF drawing, passed sample validation and moved into production — our first titanium project.

Ti-6Al-4V ELI housing — mirror-polished spherical exterior

Ti-6Al-4V ELI housing — internal M32×1.0 thread and cavity

Five Ti-6Al-4V ELI housing samples — mirror exterior

Five Ti-6Al-4V ELI housing samples — machined interior

Material: Ti-6Al-4V ELI (GR23) · ASTM F136 · double-VAR melted · annealed
Machining: CNC turning · internal M32×1.0 precision thread with thread relief · R192 spherical exterior, mirror polished
Tolerance: ±0.02 mm on designated dimensions · 100% measured, dimensional report submitted
Documents: EN 10204 3.1 MTC (composition, tensile, UT, PMI) · dimensional inspection report · China–Korea FTA certificate of origin · CI/PL
Flow: 2D drawing received → pre-production technical checks (table/drawing mismatch, thread relief, cavity depth, concentricity) → 3D model supplied → samples → customer test passed → in production

What this case taught us: starting from 2D alone stops production for dimension checks. That is why we ask for the 3D model (STEP) at intake.

Ti-6Al-4V ELI housing · sample parts photographed before shipment

Principles

Partner criteria

ISO 9001 · in-house melting and certification · CMM, PMI and UT inspection · 20-year export record. Material and machining finish in one place, so traceability never breaks.

Drawings · 3D model

We take both 2D (PDF) and 3D (STEP). Unclear dimensions are confirmed before production — replying to confirmation requests within 3 working days keeps the delivery date.

Quality responsibility

Octud is the single point of responsibility to the customer. Parts are inspected on receipt, and acceptance criteria are agreed at the sample stage.

Confidentiality

Drawings are used for quotation and manufacture only. NDA first on request; the same obligation is placed on the partner.

End-use check

Titanium alloys can fall under export controls. We decline WMD-related end uses; tell us at intake if the application is defence or aerospace.

High-heat polymer parts (PPSU · PESU · PSU · PEEK)? See Parts supply.

Questions

No. Octud handles material selection, drawing review, partner quotation and production management, import customs, incoming inspection and delivery in Korea; manufacture is by an ISO 9001 certified titanium specialist in Baoji, China. You buy domestically from Octud, and Octud is the single point of responsibility for quality, delivery and documents.