Boze Titanium Manufacturing Center | Grade 12 Ti-0.3Mo-0.8Ni | ASTM B348 / Improved CP-Ti

Grade 12 Titanium CNC Machining Services — Ti-0.3Mo-0.8Ni (UNS R53400)

Precision Grade 12 "improved" titanium (Ti-0.3Mo-0.8Ni, UNS R53400) components for hot-brine, chloride, and chemical processing applications. ASTM B348 / B265 / B338 / B861 controlled process with MTR-supported Mo / Ni verification and ASTM B600 surface preparation.

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±0.025mm Tolerance
Ti-Mo-Ni GR 12
1 piece MOQ
5–7 d Prototype
Ti-0.3Mo-0.8Ni UNS R53400 ASTM B348 ASTM B338 ASTM B861 Hot-Brine

AS9100D

Aerospace Quality Management System

ISO 9001:2015

Certified Quality Management System

Medical Device Quality Standard

MTR Traceability

Material Test Reports with Every Shipment

Engineering Compliance

Hot-Brine / Chloride Material Compliance Starts with the Correct Specification

For chemical processing, oil-and-gas, and power-generation applications in hot brine, chloride, or mildly reducing environments, the material specification — and in particular the Mo and Ni content — is the first control point.

Standard / SpecificationMaterial or Quality ScopeApplication in Procurement
ASTM B348

Titanium and titanium alloy bars and billets (Grade 12 form)

Verify grade, condition, dimensions, and Mo / Ni limits.

ASTM B265

Titanium and titanium alloy strip, sheet, and plate (Grade 12 form)

Verify grade and Mo / Ni limits for plate / sheet.

ASTM B338

Seamless and welded titanium and titanium alloy tubes (Grade 12 form)

Condenser and heat-exchanger tube applications.

ASTM B861

Titanium and titanium alloy seamless pipe (Grade 12 form)

Seamless pipe applications including brine and chemical service.

ASTM B600

Surface preparation of titanium and titanium alloy surfaces

Pickling / passivation reference.

Technical Capabilities

Three Critical Controls for Grade 12 Ti-0.3Mo-0.8Ni Machining

01

Mo / Ni Content Verification and Mill Traceability

Engineering Challenge

The hot-brine and crevice-corrosion advantage of Grade 12 depends on the small Mo + Ni additions. A bar that drifts below specification behaves like Grade 2 in hot chloride. The MTR must show both elements within the ASTM B348 limits.

Our Machining Approach

We confirm the MTR chemistry against the customer specification at incoming inspection. Customer-supplied material is accepted only with a complete MTR showing the Mo and Ni values.

Engineering Outcome

Verified Mo + Ni content at the agreed acceptance range, with full chemistry traceability.

02

Hot-Brine / Crevice-Corrosion Performance Preservation

Engineering Challenge

Grade 12 is specified specifically for its hot-brine and crevice-corrosion resistance. Surface contamination, embedded iron, or a damaged passive film can undermine the crevice advantage and lead to premature failure in stagnant brine conditions.

Our Machining Approach

We segregate Grade 12 work from carbon-steel / 316L where the order scope requires it, use dedicated tooling, and schedule ASTM B600 surface preparation per the agreed inspection plan.

Engineering Outcome

Surface free of iron and abrasive embedment, with the passive film intact at the point of shipment.

03

Weldability and Weld-Prep Geometry

Engineering Challenge

Grade 12 weldments retain CP-Ti-like weldability, but the Mo / Ni additions can shift the optimum weld parameter window. Improper shielding-gas coverage or contamination at the joint can degrade weld-metal corrosion resistance in the same way it does for Grade 2.

Our Machining Approach

We machine weld preps to ASME IX / AWS D1.6 geometry, schedule surface preparation before welding, and confirm the WPS / WPQ reference at the RFQ stage. Cutting parameters and weld-prep tolerance are matched to the Grade 2 / Grade 7 baseline.

Engineering Outcome

Weld prep geometry and joint surface condition that meet the agreed WPS tolerance band, with welding and WPS / WPQ qualification remaining the customer responsibility.

Applications

Titanium Parts That Perform Where It Matters

From aircraft structures to surgical implants, precision titanium machining delivers the strength, bio-compatibility, and corrosion resistance that demanding industries rely on.

[Aerospace Structural Element] AERO

Aerospace Structural Elements

Brackets, fittings & frames machined from Grade 5 Ti-6Al-4V under AS9100D-controlled processes.

[Orthopedic Bone Screw] MED

Orthopedic Bone Screws

Implant-grade Grade 23 ELI (Ti-6Al-4V ELI) parts machined in cleanroom-controlled environments.

[Marine Valve Components] MAR

Marine Valve Components

Corrosion-resistant titanium valves, shafts & housings engineered for extreme offshore service.

[Motorsport Fasteners] MTR

Motorsport Fasteners

High-strength titanium bolts, studs & hardware for racing and high-performance vehicles.

Submit Your Engineering Package

Have a Grade 12 Ti-0.3Mo-0.8Ni Component Ready for Manufacturing?

Send your drawing to initiate a technical review. Accepted file formats: STEP, STP, DXF. Target response: initial RFQ acknowledgment within 24 hours on working days. Mutual NDA available before technical file exchange.

Upload CAD/STEP for DFM Review Request a Grade 12 Quote

Related Capabilities

Continue the Engineering Review

3/4/5-Axis Titanium Machining

Axis configuration selection for Grade 12 components

/titanium-cnc-machining-services/3-5-axis-cnc-machining/ →

Grade 2 CP-Ti Machining

Base CP-Ti grade for general chemical service

/titanium-cnc-machining-services/grade-2-titanium-cnc-machining/ →

Grade 7 Ti-0.2Pd Machining

Palladium-stabilized counterpart for reducing acid

/titanium-cnc-machining-services/grade-7-titanium-cnc-machining/ →

Grade 12 Ti-0.3Mo-0.8Ni Material Data

Composition, mechanical properties, and forms

/materials/grade-12/ →

Submit Grade 12 RFQ

Upload drawing for DFM engineering review

/rfq/ →

Frequently Asked Questions

Grade 12 Ti-0.3Mo-0.8Ni CNC Machining — Engineering FAQ

Q1 What is Grade 12 titanium and when is it used over Grade 2?
Grade 12 is an "improved" CP-Ti alloy (UNS R53400) with small molybdenum (~0.3%) and nickel (~0.8%) additions. It retains CP-Ti weldability and cold-formability while offering roughly 50% higher strength than Grade 2 and significantly better crevice / hot-brine corrosion resistance. The trade-off vs Grade 5 is lower strength but better weldability, lower cost, and better performance in hot chloride brines.
Q2 Is Grade 12 weldable and formable like Grade 2?
Yes. The Mo and Ni additions are small enough that mechanical and fabrication behavior is essentially the same as Grade 2 — cold-forming, hot-forming, machining, and welding all use the same procedures. The alloy is often specified specifically because it welds well and resists hot-brine crevice attack.
Q3 Where is Grade 12 used instead of Grade 2 / 7?
Grade 12 is the workhorse for chemical processing, oil-and-gas, and power-generation applications where hot brine, chloride, or mildly reducing environments would attack Grade 2 but Grade 7 chemistry is unnecessary. Common uses: condenser and heat-exchanger tube, vessel and column internals, brine-handling piping, pulp-and-paper bleach stages, hydrometallurgical vessels.
Q4 What surface finish preserves Grade 12 corrosion resistance?
A clean, oxide-intact, contamination-free surface is the basis for Grade 12 corrosion resistance, identical to Grade 2. Iron, carbon-steel, or abrasive embedment can seed pitting and crevice attack. ASTM B600 alkaline cleaning + acid pickling is scheduled per the agreed inspection plan.
Q5 What is the minimum order quantity for a Grade 12 prototype?
A 1-piece minimum order quantity is supported. Indicative prototype lead time is 5–7 working days, subject to drawing completeness, material availability, and inspection scope.
About Boze Titanium Manufacturing Center

One Metal. One Focus. Infinite Precision.

Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.

Boze Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.

Certifications verified by ASTM International titanium material specifications (B265, B348, B381, F136, F2924) with full EN 10204 3.1 mill test certification. Our quality system is operated under AS9100D by Baoji Boze Metal Products Co., Ltd.

AS9100D ISO 9001 500+ Clients 15+ Years OEM/ODM
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