Gr1 – Gr23 ASTM / ASME / DIN / GB references Cut-to-size sawing · waterjet · laser Mill documentation MTC with every order MOQ friendly mixed grades & sizes

Titanium for Marine & Seawater Applications

Seawater is titanium's home turf: chloride resistance that no copper alloy or stainless can match at flow velocity, and immunity to the biofouling-and-pitting cycle that eats marine hardware. Gr2 is the default marine grade — and the grade our European boat-fabrication customers reorder season after season.

Titanium marine elbows and fittings

Default Grade Logic

Marine Duty → Grade
DutyGrade
Seawater cooling, ambientGr2 default
Hot return lines, >70 °CGr12 consideration
Structural hardware, boltsGr5 strength; Gr2 galvanic caution
Mixed with carbon steel?Isolate — Ti/steel galvanic pairs need design care

Component Map

Seawater piping

tube/pipe · elbows & bends

Condenser / cooler

B338 exchanger tubes

Fittings & hull hardware

threaded rod, bolts

Fabrication stock

plate cut-to-size

Elbows/bends shown from our own fittings stock photos below — the marine buyer's usual companion order to tube.

Real Repeat Orders, Kept Anonymous

We supply a European welding fabricator building seawater systems — GR2 machined parts, threaded rod and multi-diameter tube across successive proforma invoices. The pattern matters more than the name: marine shops need short-lead, mixed-size, documentation-complete supply, and that's the model we run.

Classification Societies

DNV/LR/ABS work on marine projects is documentation support (MTC, NDT records, traceability) coordinated with your class surveyor — we do not claim to be a certified supplier of any society.

Tube wall detailTitanium threaded rod and nutsTitanium pipe bends

FAQ

Why do marine buyers choose titanium over bronze?
Velocity tolerance, no dezincification, weight — and chloride pitting simply doesn't start. Life cost, not sticker cost.
Can you fast-ship small marine orders?
Yes — refit windows are short; air freight for urgent parts is a routine part of how we work.
Galvanic issues with GRP hulls?
Titanium stays noble against steel and aluminium; proper isolation and bedding practice is the fabricator's side of the job.

Tell us your spec — get a quotation

Send product, grade, dimensions and quantity. Typical reply: one business day, with documentation options.