As Sherardizing is a zinc-based thermal diffusion coating, it exhibits unique properties not found with other zinc coatings:
- The coating follows the contours of components exactly and is completely uniform in thickness.
- The coating produced is a zinc-iron alloy and has the highest hardness values of any zinc coating, making it more damage resistant.
- The surface texture of Sherardizing allows for subsequent paint treatments, without the need for etching primer coats.
- Coating thicknesses of 30 to 60 microns ( 0.0012 to 0.0024 inches) offer long-term corrosion protection in harsh environments.
All these properties are ideal when considering corrosion protection in the construction industry.
Why use Sherardizing?
The table below shows why Sherardizing is a better choice when choosing a coating for construction parts.
Coating Properties Comparison:
| Type of Coating | Coating Properties |
| Sherardizing | Uniform thickness, damage resistant, long-term corrosion protection Suitable for high-strength materials and threaded parts |
| Hot Dip Spin Galvanizing | Molten zinc may stick components together Non uniform thickness (may peel off) Not suitable for highstrength materials or threaded parts |
| Mechanical Plating | Limited component size, Higher cost, Lack of adherence. |
| Organic Coating Magni – Delta Protekt |
Not durable enough for environment and working conditions |
| Zinc Electroplating | Cheap but very low protection value Thickness range 5-8 microns (0.0002” to 0.0003”) May cause brittleness in high-strength materials |
Assorted components - ladder hinges, tent pegs, jubilee clips, joist hanger brackets, gas cylinder valve guards, door hinges, door locks and fittings
Foundation bolts demonstrating the uniformity of he coating on threaded components and the fact shed parts can be treated prior to assembly
Scaffolding fittings must perform in a tough environment, particularly when hit and dropped, etc. sherardizing is resistant to these types of impact
Land Rover door locking assembly
Assorted Sherardized components - Cast drainage pipes, flange, scaffolding clamps, cable hangers, fuel filler pipe, strapping buckles
Collated nails, sherardized before assembly into strip form, as used in nail guns
Sherardized fasteners in building steel work construction. 4.6, 8.8 and 10.9 grades of fasteners can be treated without affecting their properties.
Other Bodycote Metallurgical Coatings services include:
| Abrasion Resistant Coatings | Chrome Seal | Low Friction Coatings |
| Advanced Coatings | CoatAlloy™ Coatings | Passivation |
| Anti-fouling Coatings | Decorative Coatings | Plasma Spray Coatings |
| Anti-coking Coatings | Diffusion Coatings | Sacrificial Coatings |
| Anti-rusting Coatings | Duplex Coatings | Surface Protection |
| Anti-seizure Coatings | Engineering Coatings | Surface Sealants |
| Carbide Coatings | Erosion Resistance | Thermal Diffusion Coatings |
| Ceramic Densification | Flame Spray Coatings | Tribological Coatings |
| Ceramic Overlay | Hard Coatings | Wear Resistant Coatings |
| Chrome Densification | HVOF |
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