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Anti-galvanic corrosion parts Galvanic corrosion protection for magnesium-to-dissimilar-metal joints

High-Strength Aluminum Alloy Bolts

MaterialMagnesium alloysSurface treatmentSpecial anti-corrosion coating
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Product description

Compiled from the existing technical description of this product on this site

The magnesium alloy galvanic corrosion coating bolt applies a special anti-corrosion coating to the magnesium substrate and is used to join magnesium to dissimilar metals such as steel and aluminum. The coating forms an electrochemical barrier between the two metals and interrupts the galvanic circuit, suppressing accelerated corrosion at the contact area and extending fastener life in humid and salt-spray environments.

Technical Features
The special coating forms an electrochemical barrier and suppresses galvanic corrosionDesigned for mixed joints of magnesium and dissimilar metalsThe coating bonds firmly to the substrate and resists flaking during assemblyCan be combined with sealing structures to raise the protection levelCorrosion resistance can be verified by GB/T 10125 salt-spray testing
Applications
Magnesium alloy die-cast structural partsLaptops and consumer electronicsAutomotive lightweight componentsUAVs and portable devices

Specifications

The parameters listed on this page are subject to final inspection and the applicable standards; items not listed follow the customer drawing or the order agreement and are not committed by default.

Material Magnesium alloys
Surface treatment Special anti-corrosion coating
Standard Customer drawing / company standard; coating corrosion performance per GB/T 10125 (salt-spray testing)
Typical application Galvanic corrosion protection for magnesium-to-dissimilar-metal joints

Spec lookup

Check directly against your operating conditions across the 2 models in this series — client-side filtering only, no redirect, no URL change

Filter results are based on the specification fields published on each model page and are for preliminary screening only; the final selection must be confirmed in light of the actual load, plate thickness and assembly process.

Drawings & customization

No public catalogue is available for this series; drawing-based requests are handled per project.

2D

Made to drawing / sample replication

A 2D drawing or a physical sample is enough for evaluation; once confirmed, we issue drawings, build samples and obtain first-article approval before volume production. Drawings and project information are handled under confidentiality requirements.

Submit drawing request

Manufacturing process

The usual process route for this product family; actual operations follow the drawing and order requirements.

  • Substrate formingCold heading or turning
  • Isolation coating / anodizingInterrupting the galvanic path
  • Salt-spray verifiedSampling inspection at the agreed interval
  • 100% dimensional inspectionFit and thread accuracy

Capacity & delivery

Taken from the company's published capacity and certification information; no unverified claims are included.

6.5100M pcs/monthCombined monthly capacity of the Shenzhen and Xiangyang (Hubei) dual bases
As fast as 1-day prototypingFast prototyping channel after drawing or sample confirmation
26patentsPatents for fastening structures and assembly processes
3system certificationsIATF 16949 / ISO 9001 / ISO 14001

FAQ

Material, standards, surface treatment and installation points for this model; the data comes from the specification table on this page and from the national standards cited in the answers.

Q1What material does the “Magnesium Alloy Galvanic Corrosion Coating” use? What strength level does it reach?

Marked in the specification table on this page: material is magnesium alloy. Material certificates and mechanical property test reports can be supplied with the goods; batch acceptance follows the data above.

Q2Which surface treatments does the “Magnesium Alloy Galvanic Corrosion Coating” offer? How do I choose?

Surface treatment marked in the specification table on this page: special anti-corrosion coating. Each finish differs in appearance, corrosion resistance and cost; choose according to the operating environment and the order agreement.

Q3In which applications is the “Magnesium Alloy Galvanic Corrosion Coating” used?

Typical applications listed on this page: magnesium die-cast structural parts; laptops and consumer electronics; lightweight automotive components; UAVs and portable devices. Overview: the magnesium alloy galvanic corrosion coating bolt applies a special anti-corrosion coating to the magnesium substrate and is used to join magnesium to dissimilar metals such as steel and aluminum.

Q4What are the main features of the “Magnesium Alloy Galvanic Corrosion Coating”?

Features listed on this page: the special coating forms an electrochemical barrier and suppresses galvanic corrosion; designed for mixed joints of magnesium and dissimilar metals; the coating bonds firmly to the substrate and resists flaking during assembly; sealing structures can be added to raise the protection level further.

Q5How does galvanic corrosion occur, and how does the “Magnesium Alloy Galvanic Corrosion Coating” counter it?

When two metals with different potentials touch and are electrically connected in an electrolyte (humid air, a water film, etc.), the more negative metal acts as the anode and corrodes faster. Direct contact between aluminum or magnesium and steel is the most common high-risk combination. This paragraph explains the mechanism; verification follows GB/T 10125 salt-spray testing and GB/T 15748 galvanic corrosion testing. For this model, the data in the specification table on this page applies. (Applies to this model: “Magnesium Alloy Galvanic Corrosion Coating”.)

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