A cost-effective tungsten carbide coating material that balances performance and price – now offering new options for industries like paper manufacturing and offshore oil extraction.
DG.5522, an agglomerated and sintered powder developed by a specialized thermal spray material supplier, has been gaining attention for its unique chemistry and process design. It delivers a strong trade-off between sliding wear resistance, corrosion protection, and affordability – making it particularly suitable for demanding industrial applications where coating longevity and stability are critical.
Optimized chemistry without compromising performance
According to published technical data, DG.5522 is composed of chromium (Cr) as the balance, with 8.5% carbon (C), 2.7% cobalt (Co), 22.5% tungsten (W), 14.5% nickel (Ni), and trace iron (Fe). Compared to conventional high-tungsten-carbide powders, the reduced carbide content helps lower material cost, while the overall performance remains robust for a wide range of uses.
The powder is produced via agglomeration and sintering, achieving a Vickers hardness of 1000–1100 HV and an apparent density of 3.05 g/cm³. Three particle size fractions are available: 5–30 μm, 10–38 μm, and 15–45 μm, compatible with both high-velocity oxygen fuel (HVOF) and plasma spraying processes. Actual test results show coating bond strength exceeding 70 MPa, moderate impact toughness, and excellent resistance to sliding wear.
Higher nickel content – stronger corrosion resistance
Compared to many other tungsten carbide thermal spray powders, DG.5522 contains a higher level of nickel, which significantly improves the coating's resistance to moisture, salt spray, and mild acidic or alkaline environments. In a 100-hour neutral salt spray (NSS) test conducted under the following conditions – 50 g/L NaCl solution, pH 6.8–7.2, temperature 35±2°C, deposition rate 1.5 ml/80 cm²·h – the coating itself showed no rust or corrosion. A few minor rust spots detected on the surface were traced back to the underlying substrate material, further confirming the coating's excellent barrier protection.
Proven applications across wear-critical industries
Thanks to its good cost-performance balance and mechanical properties, DG.5522 has already been successfully used to strengthen a variety of critical components. Typical applications include paper mill rolls, compressor blades, and hydraulic rods for offshore oil extraction. These parts are subject to sliding wear, corrosive media, and cyclic loading – all conditions where DG.5522 coatings effectively extend service life and reduce maintenance frequency.
For users looking to control costs while still obtaining reliable wear- and corrosion-resistant coatings, DG.5522 offers a compelling alternative. Its combination of "lower tungsten carbide content but still strong performance, higher nickel yet lower price" makes it a promising replacement for traditional high-carbide coatings in moderate-load, high-corrosion-risk environments.
The product is now available in stable supply, with all three particle size grades offered on request. For more technical details or sample requests, please contact the supplier.
Media Contact
Company Name: Chengdu Daguang New Materials Co., Ltd.
Email: Send Email
Country: China
Website: https://www.chengdudaguang.com/
