• Spray can labeled 'MZ-90 Maximum Zinc Coating' on a green background
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Action Can MZ-90 Maximum Zinc Coating

Action Can MZ-90 Maximum Zinc Coating

High-purity (>00%) protective coating delivering cathodic anti-corrosion protection with hard, flexible film resistant to flaking and damage.

1031941

In stock

⚙ Ideal For

  • Exterior structural steel protection
  • Galvanised and ferrous metal surfaces
  • Cut edges and exposed steel
  • High-corrosion environment exposure
  • Primer and topcoat applications

✔ Benefits

  • Cathodic anti-corrosion protection
  • >80% zinc content in cured film
  • Touch-dry in 40 minutes
  • Can be welded through
  • Salt spray resistance 350 hours
DETAILED DESCRIPTION →
£13.99 GBP
£13.99 GBP
£11.66 Ex. VAT
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🚚 UK Shipping: Standard (£2.99) or FREE on orders over £75.

📦 Dispatched same-day if ordered before 3pm!

Shipping Information

What Are My Shipping Options?

In-Store Pickup

In-Store pickup is available on all purchase. Pickups are available Monday - Friday between the hours of 9:00–17:00. 

An email confirmation will be sent when your order is ready for collection. 

Free Shipping

We offer free Standard (2-3 Days) shipping on orders within the United Kingdom on orders over £100. Please note, some large items that require specialist courier companies, such as large mirrors and palleted items are excluded from this deal.

Shipping Fees

We also offer shipping at the following rates:

Standard-Size Parcel

Standard (UK Only) - 2-3 Days - £2.99

Express (UK Only) - 1-2 Days - £4.99

International (EU) - 3-7 Days - £14.99

International (ROW) - 5-10+ Days -£23.99


Large Parcel

Standard (UK Only) - 2-3 Days - £2.99

Express (UK Only) - 1-2 Days - £4.99

International (EU) - 3-7 Days - £14.99

International (ROW) - 5-10+ Days - £69.99

Most UK orders will be sent using Royal Mail, with larger items being sent with DPD.

International orders within the EU will normally be dispatched with Royal Mail, DPD, or UPS.

International orders to the rest of the world will normally be sent with DPD or UPS.

Please note, international delivery charges are very volatile and subject to change. We will do everything in our power to honour the delivery fee, however, in some cases, shipping may increase in price. In this event, you will be given the offer to pay the difference or cancel the order and receive a full refund.

Please note, we may be subject to various rules and restrictions in relation to some international deliveries, and you may be subject to additional taxes and duties over which we have no control. If such cases apply, you are responsible for complying with the laws applicable to the country where you live and will be responsible for any such additional costs or taxes.

Dispatch Times

Orders placed before 15:00 Monday - Friday will be shipped on the same day. 

Orders placed after this time will be shipped on the following business day,

Please note, we are closed at weekends, as well as English Bank Holidays.

Returns Policy

Our refund policy can be found at the following address: https://esupplyline.com/policies/refund-policy.

Further Information

You can contact us for further information on our shipping policies using the following:

Phone: 01953 711 881

Email: sales@esupplyline.com

Live Chat: Available on our website, Monday - Friday, 8:30 - 17:00.

Contact Form: https://esupplyline.com/pages/contact

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Action Can MZ-90 Maximum Zinc Coating

Action Can MZ-90 is a maximum zinc protective coating engineered for superior rust protection on exterior steel structures and ferrous metals. The high-purity zinc formulation (>99%) delivers cathodic anti-corrosion protection meeting ISO 1461:1999 standards whilst the specialist resin package creates a hard, flexible film strongly resisting flaking, cracking, and peeling. Available as primer or topcoat, MZ-90 touch-dries in 40 minutes and can be applied to cut edges, welds, and exposed steel.

Key Features

  • High-Purity Zinc Formulation — 99% pure zinc with >80% zinc content in cured film provides maximum cathodic protection and corrosion resistance.
  • Cathodic Anti-Corrosion Protection — Zinc coating provides electrochemical protection, actively corroding preferentially to protect underlying steel substrate.
  • Hard, Flexible Film — Specialist resin package creates protective film balancing hardness with flexibility, resisting flaking and peeling under thermal cycling.
  • Weldable Formulation — Can be welded through without degradation, enabling immediate welding of coated components without recoating.
  • Dual-Use Primer and Topcoat — Serves as standalone protection or as primer base for topcoats; versatility reduces inventory and application complexity.
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Description

Exterior Steel Corrosion Challenges in High-Exposure Environments

Exterior structural steel exposed to weather, salt spray, and moisture faces relentless corrosion attack. Traditional paint coatings provide only surface protection; they eventually chip and expose underlying steel to accelerated corrosion. Galvanised coatings offer excellent protection but become damaged through transport, handling, and welding. MZ-90 addresses this challenge through zinc technology that provides cathodic protection—the zinc corrodes preferentially to the steel, protecting it even when the coating is damaged.

Cathodic Protection Mechanism and Rust Prevention

Zinc coating provides two protection mechanisms—barrier protection (coating blocks moisture and oxygen) and cathodic protection (zinc corrodes preferentially, protecting exposed steel). This dual action is far superior to paint-only coatings. Even when the zinc coating chips or is scratched, zinc continues corroding to protect the exposed steel. This self-sacrificing protection is particularly valuable for long-term outdoor exposure where coating damage is inevitable.

High-Purity Zinc and Maximum Protection Density

The >99% pure zinc formulation maximises the cathodic protection benefit—impurities in lower-grade zinc reduce protective effectiveness. The >80% zinc content in the cured film is exceptional; many competing products deliver significantly lower zinc densities. This maximum zinc approach provides industry-leading corrosion resistance, particularly valuable in harsh environments like coastal regions or industrial facilities.

Salt Spray Resistance and Performance Verification

Salt spray testing (ASTM B117) quantifies corrosion resistance—MZ-90's 350 hours at 40 µm film thickness exceeds typical industrial expectations. This measured performance is independent verification of corrosion protection capability, translating to years or decades of outdoor protection under typical conditions. This proven resistance provides confidence in long-term durability.

Hard-Flexible Film Balance for Durability

Rigid coatings crack under thermal cycling and substrate movement; soft coatings lack abrasion resistance. MZ-90's specialist resin package balances hardness and flexibility, creating film that resists cracking during temperature extremes (-30°C to +200°C) whilst maintaining toughness against mechanical damage. This balanced approach extends coating life through thermal stress and physical impacts.

Weldability for Construction and Fabrication

Welding typically requires coating removal and re-coating post-weld. MZ-90 can be welded through, eliminating pre-weld stripping and post-weld recoating labour. This weldability dramatically simplifies fabrication processes, allowing protective coating to remain through welding without degradation. This capability is particularly valuable for on-site welding and field repairs.

More Information

Application Instructions

Use in well-ventilated area. Ensure adequate ventilation during application to manage solvent vapours.

Prepare the surface thoroughly. Clean the surface to remove dirt, grease, and contamination—cleanliness is essential for adhesion.

Ensure surface is dry. Remove all moisture; apply coating only to completely dry surfaces.

Remove rust and scale with wire brush. Use a wire brush to remove any rust, scale, or loose material from the steel surface.

Shake the can vigorously. MZ-90 contains zinc solids that settle during storage; shake vigorously until the agitator ball is free.

Continue shaking for one additional minute. Extended shaking ensures uniform zinc distribution and colour consistency.

Shake periodically during application. Continue shaking the can periodically throughout application to maintain zinc uniformity.

Apply in light, even coats. Use 2–3 light coats rather than one heavy coat for best results and optimal film quality.

Maintain consistent application distance. Hold the can 15–20 cm from the surface for uniform spray coverage.

Allow 15–20 minutes between coats. Additional coats can be applied after brief drying time; recoating extends protection.

Inspect for complete coverage. After each coat, verify complete coverage with no missed areas or thin spots.

Clean the aerosol valve after use. Turn the can upside down and spray until only propellant escapes, clearing the valve of zinc residue.

Allow 40-minute touch-dry before handling. After final coat application, allow touch-dry time before moving or handling coated components.

Allow full cure time before service. Although touch-dry occurs at 40 minutes, allow 90% cure after 7 days at 23°C before exposing to harsh conditions.

Specifications

Product Type Maximum zinc protective coating for steel corrosion protection

Format Aerosol spray canister

Container Size 500 mL

Appearance Smooth, matt grey finish

Odour Solvent

Specific Gravity at 20°C 1.45

Touch Dry Time Approximately 40 minutes

Curing Time 90% cured after 7 days @ 23°C

Zinc Pigment Purity >99% high-purity zinc

Zinc Content in Cured Film >80%

Heat Resistance 200°C (4 hours)

Low Temperature Resistance -30°C

Salt Spray Resistance 350 hours (ASTM B117 @ 40 µm film thickness)

Corrosion Protection Type Cathodic anti-corrosion protection

Standards Compliance ISO 1461:1999 cathodic protection standards

Primary Function Protective coating for exterior steel structures and ferrous metals

Secondary Functions Primer application, topcoat application, weld protection

Application Method Aerosol spray with light, even coats (2–3 coats recommended)

Surface Compatibility Steel, galvanised steel, ferrous metals, structural components

Adhesion Profile Strong adhesion to metal substrates

Film Characteristics Hard, flexible film strongly resisting flaking, cracking, peeling

Weldability Can be welded through without coating degradation

Dual-Use Capability Functions as primer or topcoat; standalone or layered protection

Colour Options Light grey matt finish

Recoat Interval 15–20 minutes between coats

Surface Preparation Clean, dry, free from grease; rust and scale removal required

Weather Resistance Excellent exterior exposure durability

Thermal Performance Maintains properties across -30°C to +200°C range

Application Areas Gantries, hand-rails, fencing, railings, grates, structural steel, cut surfaces, exposed steel, fasteners, conduit, strapping, welds, electrical poles, breaker housings, rain spouts, signs, doors, trailers, guard rails

Storage Temperature Normal ambient; below 50°C for aerosols

Shelf Life Minimum 4 years with proper storage

Market Sectors Agriculture, fasteners & fixings, engineering, electrical MRO, trade/pro-DIY

HS Code 3209.10

Documents

FAQs

What's the difference between MZ-90 and standard galvanised coatings, and when should I use one versus the other?

Galvanised coatings are applied through hot-dip or electroplating processes, creating thick, durable zinc layers during manufacturing. MZ-90 is a spray-applied coating for touch-ups, repairs, and field protection on new or damaged steel. Use MZ-90 for protecting cut edges, welded areas, and spot damage on galvanised components. MZ-90 is also ideal for protecting ungalvanised steel structures where galvanising is impractical. Both provide cathodic protection; they're complementary approaches for different applications.

Can MZ-90 be applied over old, damaged paint or must surfaces be stripped to bare metal?

Strip surfaces to bare metal for optimal adhesion. Old paint can flake and prevent MZ-90 adhesion. However, if the existing paint is in good condition with no loose areas, MZ-90 can be applied over it for additional protection. For maximum corrosion protection, remove rust and scale to bare metal, then apply MZ-90. The cathodic protection benefit is maximised on bare metal, although surface-to-surface bonding works over sound existing coatings.

How many coats of MZ-90 do I need for long-term exterior protection, and what's the maximum protection?

Two to three light coats provide excellent long-term protection for typical exterior exposure. Each light coat builds zinc film thickness; three coats deliver approximately 40 µm thickness, corresponding to the salt spray testing specifications. For extreme environments (coastal, industrial), three coats maximise protection. Light coats are superior to single heavy coats—they avoid runs and drips whilst building optimal film properties.

Can MZ-90 be used on aluminium or other non-ferrous metals, or only on steel?

MZ-90 is formulated for steel and ferrous metals where cathodic protection is the primary benefit. On aluminium and other non-ferrous metals, zinc coating provides only barrier protection without the cathodic mechanism. Specialised aluminium primers are more appropriate for non-ferrous surfaces. However, MZ-90 can provide protective barrier coating on aluminium if ferrous metal primers aren't available—verify compatibility first by testing on an inconspicuous area.

Product Product subtotal Quantity Price Product subtotal
Action Can MZ-90 Maximum Zinc Coating1031941
Action Can MZ-90 Maximum Zinc Coating1031941
£13.99/ea 		£0.00
£13.99/ea £0.00