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DG.5522 High-performance agglomerated sintered tungsten carbide thermal spray powder | High corrosion resistance and anti-slip wear special powder

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High-Performance DG.5522 Tungsten Carbide Thermal Spray Powder | China Suppliers and Factory for Wear Resistance

DG.5522 is an economical agglomerated sintered tungsten carbide thermal spray powder, expertly crafted in China. This innovative product utilizes a scientifically optimized alloy ratio and an advanced powder-making process, ensuring a perfect balance of high hardness, superior wear resistance, excellent corrosion resistance, and good impact toughness. It is ideal for mainstream supersonic and plasma spraying processes, As one of the leading suppliers in the industry, we provide a cost-efficient alternative to traditional high-content tungsten carbide powders, allowing you to control expenses without compromising on core performance. DG.5522 is a preferred high-performance material for general industrial applications requiring wear-resistant and anti-corrosion coatings. Its versatility makes it suitable for heavy-duty, corrosive, and sliding wear conditions across various industries. Choose our factory for reliable and high-quality thermal spray powders tailored to meet your needs

Product Detail

Core Basic Parameters

Production Process

Agglomeration sintering (excellent powder sphericity, stable flowability, uniform spray deposition, and high coating density)

Chemical Composition

C 8.5%, Co 2.7%, W 22.5%, Ni 14.5%, Fe ≤0.1%, Cr balance

Coating Hardness

1000~1100HV, high hardness for excellent wear resistance

Coating Bond Strength

>70MPa, strong adhesion, not prone to peeling or flaking, excellent coating stability

Loose Bulk Density

3.05g/cm³

Optional Particle Sizes

5-30μm, 10-38μm, 15-45μm (multiple specifications available to suit different workpiece precision and spraying equipment requirements)

Compatible Processes

HVOF supersonic spraying, APS plasma spraying, strong process compatibility, high mass production stability

Core Product Advantages

High cost-effectiveness, suitable for mass production needs

Utilizing a low-tungsten carbide ratio design, it avoids the high cost drawbacks of traditional high-tungsten powders, achieving balanced overall performance and significantly reducing enterprise coating production costs, making it suitable for mass production of workpieces.

Outstanding resistance to sliding wear

The uniform distribution of hard carbide phases results in high coating hardness and a dense microstructure. For various mechanical sliding friction and minor erosion conditions, its wear resistance life far exceeds that of ordinary alloy powder coatings.

Moderate impact resistance and toughness

It avoids the brittleness defects of high hardness, balancing hardness and toughness, making it suitable for minor alternating loads and vibration conditions, effectively preventing coating cracking and peeling.

High-nickel formula, enhanced corrosion resistance

With a 14.5% high nickel content ratio, compared to conventional tungsten carbide powder, its resistance to acid and alkali corrosion, salt spray corrosion, and humid media corrosion is significantly improved, making it suitable for corrosive conditions such as marine, chemical, and humid outdoor environments.

Strong coating stability

The powder formed by the agglomeration sintering process has high purity and extremely low impurities. After spraying, the coating has no obvious pores, uniform structure, high bonding strength, and is not prone to failure during long-term service.

Authoritative Salt Spray Performance Test (NSS Neutral Salt Spray Test)

Test Standards: Test solution: 50g/L sodium chloride solution; Solution pH: 6.8-7.2; Test temperature: 35±2℃; Salt spray deposition: 1.5ml/80cm²·h; Test duration: 100 hours.

Test conclusion: After 100 hours of continuous neutral salt spray testing, the coating prepared with DG.5522 powder remained intact, showing no rust, peeling, or flaking. The trace rust on the coating surface was confirmed to originate from substrate migration, fully demonstrating that this coating possesses excellent resistance to salt spray and electrochemical corrosion, making it suitable for long-term use in marine, outdoor, and chemical corrosion environments.

Typical Application Scenarios

With its comprehensive advantages of wear resistance, corrosion resistance, high toughness, and cost-effectiveness, DG.5522 is widely used in heavy-duty wear-resistant and corrosion-resistant parts across various industries:

✅

Paper IndustryWear-resistant and corrosion-resistant coatings for various papermaking rollers, drive rollers, and pressing rollers

✅

Power EquipmentWear-resistant and anti-cavitation coatings for compressor blades and fan impellers

✅

Offshore OilCorrosion-resistant and wear-resistant coatings for hydraulic rods, piston rods, and transmission components in offshore extraction equipment

✅

General MachineryPrecision wear-resistant parts subjected to sliding friction, minor impacts, and corrosive conditions.

Product Summary

DG.5522 precisely balances wear resistance, corrosion resistance, toughness, and cost, making it a versatile, high-performance tungsten carbide thermal spray powder with no major weaknesses. It addresses the shortcomings of ordinary alloy powders, such as poor wear resistance and susceptibility to corrosion, while avoiding the excessively high cost of high-end tungsten carbide powders. Suitable for most industrial wear-resistant and corrosion-resistant spraying applications, it is an excellent choice for industrial mass production, replacing traditional spraying materials and reducing costs while increasing efficiency.

Frequently Asked Questions (FAQ)

What is the chemical composition of DG.5522?

DG.5522 consists of C 8.5%, Co 2.7%, W 22.5%, Ni 14.5%, Fe ≤0.1%, and Cr balance. The high-nickel (14.5%) formula significantly enhances its corrosion resistance.

Which thermal spraying processes are compatible with DG.5522?

DG.5522 is highly compatible with HVOF (supersonic spraying) and APS (plasma spraying) processes, offering high mass production stability.

How does DG.5522 perform against corrosion and salt spray?

Under strict NSS Neutral Salt Spray testing for 100 hours, the coating prepared with DG.5522 remained completely intact with no rust, peeling, or flaking, demonstrating exceptional resistance to electrochemical and salt spray corrosion.

What is the hardness and bond strength of the DG.5522 coating?

The coating achieves a high hardness of 1000~1100HV for outstanding wear resistance, and a strong bond strength of >70MPa to prevent peeling and flaking.

What makes DG.5522 cost-effective for mass production?

By utilizing a low-tungsten carbide ratio design, DG.5522 avoids the high cost of traditional high-tungsten powders while maintaining high wear and corrosion resistance, significantly lowering enterprise coating production costs.

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