Aerospace & Defense

🌡️ Cryogenic Propellant Tank Hardware

Thin-section curved bands/rings with precision bolt-hole patterns, often with PTFE liner interface for clamping

1 Components 1 Materials 3 Processes 1 Standards

What is Cryogenic Propellant Tank Hardware?

🌡️ Cryogenic Propellant Tank Hardware represents a complete system of precision titanium components engineered for Aerospace & Defense applications. Thin-section curved bands/rings with precision bolt-hole patterns, often with PTFE liner interface for clamping The system integrates 1 distinct component types manufactured through 3 specialized processes.

Key manufacturing processes for this system include 5-axis CNC roughing for cryogenic hardware geometry, Heat treatment (STA) at 200W fiber laser, Wire EDM contour profiling at 200W fiber laser, CMM per AS9102 at 200W fiber laser, each selected and qualified to meet component-specific requirements.

Engineering & Design Principles

Material: Ti-5Al-2.5Sn ELI is specifically formulated for cryogenic service, retaining Charpy impact energy >60J at -253C (liquid hydrogen). Standard Ti alloys become brittle at these temperatures.

Form: Plate stock for bands and collars. Sheet for shims. Bar for fasteners. All material must be ELI grade with guaranteed low-temperature impact properties.

Standards & Material Specifications

Standards: AMS 4926 / MIL-T-9046 Ti-5Al-2.5Sn ELI, annealed, 100% Charpy tested at -253C (min 27J), hydrogen content <100ppm

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Engineering Solution Blueprint

Fasteners (Bolts, Nuts, Studs)

Aerospace · Automotive · General Industry

1 Part Feature Analysis

Small cylindrical parts with external/internal threads, hexagonal/flange heads, shank and chamfer

  • ⚠️ Thread galling
  • ⚠️ Stress concentration at thread root
  • ⚠️ Weight reduction
  • ⚠️ Corrosion fatigue
  • ⚠️ Preload relaxation

2 Material Selection Rationale

Grade 9 Ti-3Al-2.5V — Medium strength, good formability

Grade 9 (Ti-3Al-2.5V) has moderate strength with excellent cold-heading formability for fasteners. Beta-Ti (Ti-15V-3Cr-3Sn-3Al) for ultra-high strength applications.

3 Form Selection Rationale

Wire / Small Bar — for fasteners, springs, medical

Wire/small bar is the standard form for fasteners. Direct cold/hot heading, material utilization >95%.

4 Manufacturing Process & Services

Core Processes:

Cold / hot heading formingThread rollingHeat treatmentSurface treatment

Toll Processing Services:

Vacuum annealingAnodizing (AMS 2488)Batch testing (mechanical + metallographic)

Process Pitfalls:

  • ⚠️ Ti fasteners require anti-galling coating (Al-bronze plating, MoS2 coating)
  • ⚠️ Thread rolling gives 30% higher strength than cutting; rolling is mandatory

5 Procurement Specifications

AMS 4934 / ASTM B348 Gr9, solution+aged (STA), 100% thread inspection

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Manufacturing Process Flow

1
Drilling of bolt holes with jig

Laser drilling of titanium uses pulsed laser energy to create precise holes through percussion or trepanning methods. Hole diameters range from 0.05 m

2
PTFE bonding / insert molding

Professional molding process for titanium components. PTFE bonding / insert molding is performed by certified technicians following approved procedure

3
Waterjet / laser cutting of band profiles

Fiber laser cutting of titanium uses a focused 1 µm wavelength beam to melt and expel material through a coaxial assist gas jet. The narrow (0.1–0.3 m

Components in This System

Component Material
Titanium Cryogenic Tank Clamp Band Ti-5Al-2.5Sn ELI

Frequently Asked Questions

What titanium grades are used in Cryogenic Propellant Tank Hardware systems?
Cryogenic Propellant Tank Hardware components are manufactured from Ti-5Al-2.5Sn ELI. The specific grade is selected based on mechanical property requirements, corrosion resistance needs, and Aerospace & Defense industry regulations.
What manufacturing processes are used for Cryogenic Propellant Tank Hardware?
The Cryogenic Propellant Tank Hardware system components are produced using 5-axis CNC roughing for cryogenic hardware geometry, Heat treatment (STA) at 200W fiber laser, Wire EDM contour profiling at 200W fiber laser, CMM per AS9102 at 200W fiber laser. Each process is selected and qualified to meet the specific dimensional, metallurgical, and surface requirements of each component within the system.
What quality standards apply to Cryogenic Propellant Tank Hardware components?
Cryogenic Propellant Tank Hardware components are manufactured to NAS 6600 (propellant tank applied) and other applicable specifications. Full material traceability, dimensional inspection reports, and certificates of conformance are provided with each shipment.
What industries use Cryogenic Propellant Tank Hardware?
Cryogenic Propellant Tank Hardware systems are deployed in Aerospace & Defense applications. Each industry has specific regulatory and performance requirements that drive material selection and process qualification.
Can you provide DFM feedback for Cryogenic Propellant Tank Hardware designs?
Yes. Our engineering team provides free Design for Manufacturability (DFM) analysis for Cryogenic Propellant Tank Hardware projects. Upload your CAD file (STEP, DXF, or DWG format) and our team will review your design within 24 hours.

Engineering Trends

  • ▸ Process: Waterjet / laser cutting of band profiles
  • ▸ Process: Drilling of bolt holes with jig
  • ▸ Process: PTFE bonding / insert molding

Related Manufacturing Capabilities

These specialized processes support Cryogenic Propellant Tank Hardware component manufacturing.

Drilling of bolt holes with jig PTFE bonding / insert molding Waterjet / laser cutting of band profiles
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 13485 & 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.

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