• Gas Nitriding Project

    Gas Nitriding

    Gas Nitride case hardening is a method of imparting very high hardness to the surface of steel alloys and is used to harden a vast array of components for many different applications.

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  • Gas Nitriding Project

    Zinc Phosphating

    Zinc Phosphating of steel components gives increased corrosion resistance (with dewatering oil), lubricity or as a substrate for further coating.

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  • Scotia Surface Hardening Unit

    Tufftriding QPQ

    High Corrosion Resistance, Increased Fatigue Strength, Low Co-efficient of Friction, High Wear Resistance

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Scotia Surface Hardening Ltd provides a range of surface technologies for engineering companies across the UK. From our premises just outside Glasgow we provide Gas Nitriding, Zinc Phosphating, Stress Relieving and a variety of Anti Corrosion/Anti Friction/Fluoropolymer Coatings. Since taking over the business in 2011 we have expanded our range of services to suit the requirements of our customers.

As a business we offer excellent customer service, value for money and short lead times. We continue to evolve and provide flexible solutions for our customers and our location provides easy transport links allowing us to offer very quick turnaround times when necessary.

Customer service and attention to detail is at the forefront of our business ethos and is backed up by our ISO:9001 certification.

Gas Nitriding

Gas Nitriding

Gas Nitride case hardening is a method of imparting very high hardness to the surface of steel alloys and is used to harden a vast array of components for many different applications.

Zinc Phosphating

Zinc Phosphating Services

Zinc Phosphating of steel components gives increased corrosion resistance (with dewatering oil), lubricity or as a substrate for further coating.


Tufftriding QPQ

Tufftriding QPQ

High Corrosion Resistance, Increased Fatigue Strength, Low Co-efficient of Friction, High Wear Resistance



Stress Relieving

Stress Relieving

Stress Relieving heat treatment process is heating to a temperature in order to relieve internal stresses.