Stock Ready
GR5 Titanium Big Pan Hexagon Head Bolts M10*18
- Material
- GR5 (Ti-6Al-4V)
- Size
- M10 × 18mm
- Head Style
- Big Pan Hex Head
- Execution
- CNC / Rolled Threads
Inventory & Precision Fastener Specifications
Precision GR5 Titanium Flange & Socket Screws Available for Fast Dispatch
Manufactured from Baoji aerospace-grade raw sponge ingots. Fully compliant with DIN 6921, DIN 912, and custom OEM prints.
Button Head
GR5 Titanium Bolts M6*70mm Button Head Inner Hex
- Material
- GR5 (Ti-6Al-4V)
- Size
- M6 × 70mm
- Type
- Socket Dome Cap
- Finish
- Natural / Anodized
Anodized Color
GR5 Titanium Bolts M8*40mm Colored Hex Socket Bolts
- Material
- GR5 (Ti-6Al-4V)
- Size
- M8 × 40mm
- Process
- Electrolytic Oxide
- Standard
- DIN 912 Equivalent
Flange Drilled
GR5 Titanium Bolts M8*20mm Hex Flange Head Drilled
- Material
- GR5 (Ti-6Al-4V)
- Size
- M8 × 20mm
- Feature
- Drilled Safety Wire
- Torque Spec
- Enhanced Load Flange
Aero & Cycle
DIN912 M5 Titanium Socket Head Cap Screw
- Material
- GR5 (Ti-6Al-4V)
- Size
- M5 Standard Pitch
- Standard
- DIN 912 / ISO 4762
- Applications
- Machinery & Rigging
Flange Nuts
GR5 Titanium Nuts M12*1.5 Hex Flange Full Thread
- Material
- GR5 (Ti-6Al-4V)
- Pitch
- 1.5 Fine Thread
- Geometry
- Wide Integrated Washer
- Grade
- Class 10.9 Equivalent
Countersunk
GR5 Titanium Bolts M8*20mm Countersunk Hex Socket
- Material
- GR5 (Ti-6Al-4V)
- Size
- M8 × 20mm
- Tolerances
- ±0.02 mm CNC
- Standard
- DIN 7991 Flush Mount
Cup Head High Stress
GR5 Titanium Bolts M8*25mm Cylindrical Hex Socket
- Material
- GR5 (Ti-6Al-4V)
- Size
- M8 × 25mm
- Designation
- Cup Head Allen
- Tensile
- ≥ 950 MPa Tested
Metallurgical Whitepaper Depth
Engineering Analysis: Anodized GR5 Fasteners in Sub-Arctic Continental Climates
Why Tier-1 industrial buyers in Dornod Province and the wider Choibalsan logistics hub are phasing out traditional Grade 8.8 plated steel and A2 stainless bolts in favor of rolled-thread titanium alloy.
Cold Brittleness Immunity (Ductile Transition)
Ferritic and martensitic high-tensile steels undergo a drastic Ductile-to-Brittle Transition Temperature (DBTT) shift when ambient steppe temperatures drop to -30°C to -45°C during Eastern Mongolian winters. GR5 (Ti-6Al-4V) retains an equiaxed alpha-beta microstructure, preserving higher Charpy impact values and fracture toughness under cyclic vibration with zero abrupt cold failure.
Electrochemical Anodizing & Galling Shield
Standard raw titanium tends to experience thread galling during rapid pneumatic torquing. Our precision Type II and decorative Color Anodizing grows a controlled, high-density titanium dioxide (TiO₂) dielectric barrier. This film reduces the surface friction coefficient, improves pre-load consistency, and provides immediate visual sizing code on mining wash-plants and mobile maintenance rigs.
Flange Geometry vs. High Dynamic Vibration
Choibalsan's railway expansion and heavy hauling routes subject running equipment to relentless mechanical shock. Hexagon flange bolts consolidate the washer and hex cap into a single monoblock design. The enlarged integrated bearing surface dramatically lowers seating surface contact stresses, preventing thread embedment into soft casting housings while maintaining clamping force.
| Property / Specification Parameter | Navzo Anodized GR5 (Ti-6Al-4V) | Class 10.9 Plated Alloy Steel | Austenitic 316 Stainless Steel | 6061-T6 Anodized Aluminum |
|---|---|---|---|---|
| Tensile Strength (Ultimate, Rm) | 895 – 1000 MPa | 1040 MPa | 500 – 700 MPa | 310 MPa |
| Yield Strength (Rp 0.2) | 828 MPa | 940 MPa | 200 – 240 MPa | 276 MPa |
| Volumetric Density | 4.43 g/cm³ (~44% Lighter than Steel) | 7.85 g/cm³ | 7.98 g/cm³ | 2.70 g/cm³ |
| Low-Temp Performance (-40°C Steppe) | Fully Ductile (No DBTT Cliff) | Prone to Notch Embrittlement | Ductile, Lower Clamping Torque | Excessive Thermal Shrinkage |
| Saline / Coal Chemical Slurry Resistance | Immune (Self-Healing Passive TiO₂) | Corrosion upon zinc depletion | Susceptible to pitting/crevice | Rapid alkaline/acid degradation |
Mongolia Regional Focus
Localized Industrial Applications in Choibalsan & Dornod Province
Choibalsan serves as the primary transport, mining processing, and energy pivot for eastern Mongolia. High-strength titanium fasteners fulfill specialized requirements across key local sectors.
1. Coal, Uranium & Polymetallic Extraction Units
In heavy open-pit equipment surrounding Dornod (such as Aduunchuluun operations), vibrating screens, slurry pumps, and hydrometallurgical leaching scrubbers suffer from severe sulfur-dioxide wash and acidic fines. GR5 flange bolts provide long operational life, eliminating seized thread blowouts and reducing maintenance downtime during sub-zero shutdowns.
2. Trans-Mongolian Cross-Border Rail & Fleet Logistics
Choibalsan's railway terminal links regional dry ports to Manchuria and eastern trading routes. Heavy transport haulers traversing corrugated gravel roads and bitter permafrost suffer chassis bolt shearing. Switching high-stress brackets to M8 and M10 GR5 titanium flange hardware reduces unsprung mass and prevents catastrophic cold-fracture shearing.
3. Municipal Power Generation & Heat Stations
The Choibalsan Thermal Power Plant modernization demands pipeline and valve flange hardware capable of enduring thermal expansion differentials, steam-pipe condensation, and flue-gas sulfuric attack. Titanium fasteners prevent joint oxidation seizing, ensuring boiler casing sensors and auxiliary flanges remain easily serviceable year after year.
Strategic Sourcing Shift
Choibalsan Fastener Procurement Trends: The Move to High-Integrity Alloys
An in-depth perspective on why Dornod procurement directors and mechanical contractors are migrating to custom-manufactured titanium hardware.
Total Lifecycle Cost (TCO) Prioritization
Historically, low upfront cost made zinc-galvanized carbon fasteners the default. However, replacement cycles during winter freeze-thaw periods create high labor and logistics expense. Project managers increasingly calculate the cost per operating hour: a fastener that will never rust, never gall, and resists thermal embrittlement saves substantially over 5–10 years.
Electrification & Drone Surveying Equipment
Extensive pastoral surveying and perimeter monitoring throughout Dornod require specialized battery-powered utility vehicles and high-payload UAVs. Navzo M5 and M6 anodized fasteners allow structural weight reduction, directly improving operational battery range and flight endurance across wind-heavy plains.
Direct Sourcing from Baoji Manufacturing Hub
Rather than purchasing third-party surplus from intermediaries in Ulaanbaatar, Choibalsan enterprises are utilizing direct trade lines into China's Titanium Valley (Baoji). Consolidating orders directly with original manufacturers guarantees authentic raw material batch traceability (3.1 MTRs) and tailored sizing.
Enterprise Manufacturing Authority
Why Sourcing Directly from Navzo Precision Titanium Secures Your Supply Chain
Located on Yucai Road in the High-tech Development Zone of Baoji, Shaanxi — China's recognized center of titanium ingot and mill processing since 2011.
Baoji Ingot Traceability
Every lot of Ti-6Al-4V bar originates from certified titanium sponge melt furnaces with full chemical and mechanical Mill Test Certificates (EN 10204 3.1) available upon dispatch.
Thread Rolling over Cutting
Our hex flange bolts feature cold-rolled threads instead of cut threads. Rolling preserves uninterrupted internal metal grain flow lines, increasing dynamic fatigue life by upwards of 30%.
Multi-Process Under One Roof
Heading, high-precision CNC multi-axis turning, thread rolling, automated degreasing, ultrasonic cleaning, and electrochemical anodizing operate within our unified ISO-governed system.
Rapid Rapid Logistics Dispatch
Direct rail transit pathways via Erenhot / Zamyn-Üüd ensure predictable consignment transit directly into Dornod logistics terminals without excessive coastal forwarding delays.
Full Dimensional Metrology
Standard gauge ring checks, pitch micrometer analysis, profile projector optical scans, and pull-test verification ensure strict compliance with DIN 6921 flange tolerances.
Technical OEM Engineering
Collaborative support for 2D/3D STEP drawings, custom flange diameters, reduction shanks, pre-drilled lock-wire heads, and customized micro-arc oxidation treatments.
Procurement Clarity
Frequently Asked Questions: Purchasing GR5 Fasteners in Choibalsan
Direct technical answers from our engineering support desk regarding specs, delivery, and installation.
How does anodizing affect the dimensional tolerance of M6–M12 flange bolts?
Unlike heavy paint, powder coating, or hot-dip galvanization (which adds 25–50 µm to the pitch diameter), Type II titanium color anodizing creates an electrochemical reaction that forms an oxide layer merely 10 to 200 nanometers thick. This growth produces essentially negligible dimensional change, allowing threads to engage 6g/6H tolerance gauges with zero thread binding.
What anti-seize lubricant should be applied under Mongolian steppe conditions?
Because titanium has a low thermal conductivity and is prone to dry-friction galling, a high-purity, metal-free paste or a synthetic molybdenum-disulfide (MoS₂) lubricant formulated for Arctic environments (-50°C to +150°C) is recommended. Avoid low-grade copper-based greases if your titanium bolts are threaded into aluminum housings to prevent galvanic cells.
What is the minimum commercial order quantity (MOQ) for non-standard lengths?
Standard stock metric catalogue items (such as standard DIN 6921 hex flange bolts in sizes M6×20 to M10×50) generally carry an MOQ of 100 to 200 pieces. For custom OEM lengths, drilled heads, or custom flange diameters, batch runs generally begin at 200–500 pieces, with sample prototypes available upon technical review.
What shipping and rail clearance routes are used from Baoji to Choibalsan?
Standard consignments travel by express courier (air cargo) via Beijing/Ulaanbaatar for expedited shipments (typically 4–7 business days). Heavier crate freight is dispatched by rail container via Zamyn-Üüd directly onto the eastern Mongolian spur lines serving Dornod Province, keeping landed freight costs highly competitive.
Can Navzo bolts directly replace 10.9 or 12.9 carbon steel on mining machinery?
GR5 titanium fasteners achieve 895–1000 MPa tensile strength, which closely matches metric Class 10.9 fasteners (~1040 MPa), making them an effective direct replacement in high-stress, high-corrosion, or weight-sensitive brackets. However, titanium has an elastic modulus of ~114 GPa (roughly half that of structural steel at ~210 GPa), requiring calculated torque calibration to achieve appropriate joint preload.
What metallurgical documentation is provided with every order?
Every export shipment is accompanied by a mill test report (MTR) detailing chemical composition (Ti, Al, V, Fe, C, N, H, O contents) and mechanical property evaluations (tensile strength, yield, elongation, reduction of area). Custom third-party metallurgical lab re-testing (SGS/TÜV) can be arranged upon request.
Ready to Source High-Performance Titanium Hardware for Dornod Projects?
Share your dimension lists, CAD drawings, or procurement requirements. Our experienced technical engineering team in Baoji replies with comprehensive pricing and lead times within 60 minutes.