Electroforming Chemicals
Cobalt Sulphamate, Nickel-Cobalt Electroforming Additive
Also known as: Cobalt Sulfamate
Overview
Cobalt Sulphamate, Product Overview
Cobalt Sulphamate (also known as Cobalt Sulfamate) is added to Nickel Sulphamate baths to produce nickel-cobalt co-deposits with significantly higher hardness. Shriji Chemicals® supplies High Purity (H.P.) grade Cobalt Sulphamate that raises Vickers hardness from the standard nickel range to 200 to 500 HV depending on cobalt concentration, improving levelling and brightness while maintaining acceptably low internal stress. This makes it the standard choice for security printing, hologram tooling, and precision mould applications across India. Cobalt Sulphamate is also available as Cobalt Sulfamate for customers using American chemical nomenclature.
Applications
Where Cobalt Sulphamate is Used
Security Hologram Shims
Cobalt addition hardens holographic shims for longer tool life and sharper definition.
Rotogravure Printing Cylinders
Harder nickel-cobalt deposits extend cylinder life in high-speed rotogravure and flexible packaging presses.
Precision Tooling & Moulds
Used where maximum deposit hardness is required alongside low internal stress.
SIM Card Punch Tools
Harder deposits from nickel-cobalt baths improve punch tool longevity.
Quick Facts
FAQ
Common Questions about Cobalt Sulphamate
How much Cobalt Sulphamate do I add to my Nickel Sulphamate bath?
Typically 1 to 10 g/L of cobalt ion, depending on target hardness. Lower concentrations (1 to 3 g/L) give moderate hardness gains with minimal stress impact. Higher concentrations (5 to 10 g/L) give maximum hardness in the 400 to 500 HV range. Contact us for specific bath chemistry guidance for your application.
Does Cobalt Sulphamate affect internal stress?
At lower cobalt levels (around 1 to 3 g/L), internal stress remains low. Higher concentrations increase hardness but may slightly increase tensile stress, bath monitoring is recommended regularly.
Is Cobalt Sulphamate compatible with all Nickel Sulphamate baths?
Yes, it is designed as a direct additive to standard Nickel Sulphamate electroforming baths.
Related Products
Also Available from Shriji Chemicals®
Need Cobalt Sulphamate for your electroforming operation?
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