Twickenham Plating Group

Call: +44 (0)1202 692416
Technical Plating Services

Range of Finishes and Specifications

The following table details our full range of finishes and specifications:

PROCESS TYPE METHOD BASE MATERIAL SPECIFICATION
Palladium Pure.
Palladium/nickel
Selective, barrel and rack Copper Alloys, Steel, Aluminium, Die Castings Customer Specification
Rhodium Pure Selective, barrel and rack Copper Alloys, Steel, Aluminium, Die Castings DTD 931 (obsolete) ASTM B634-88
Gold Hard. Pure. Thallium Free. Immersion Gold Reel to Reel (all over, selective plating and spot plating), barrel and rack. Selective plating on loose parts. Steel, Copper Alloys Zinc Die Castings Aluminium DEF 03-17, MIL-DTL-45204D, ASTM B488, AMS 2422E, BS4292: PART 1 & PART 2 – REPLACED BY BS EN ISO 27874:2008
Silver Semi-bright. Bright. Dull. Antimonial Reel to Reel (all over, selective plating and spot plating), barrel and rack. Steel, Copper Alloys Zinc Die Castings Aluminium BS 2816 REPLACED BY BS EN ISO 4521:2008, DEF03-9, BS 4290, QQ-S-365 REPLACED BY ASTM B700
Copper Cyanide. Acid. Pyrophosphate Reel to Reel (selective), barrel and rack Steel, Aluminium, Zinc Die Castings, Copper Alloys AMS-2418, BS 2870 , BS 2874
Nickel Dull. Bright. Semi-bright. Ductile Reel to Reel (all over, selective plating and spot) barrel and rack Steel, Copper Alloys, Aluminium, Zinc Die Castings QQ-N-290, DEF 03-27, BS4758 - replaced by BS EN ISO 4526:2003, BS EN ISO 12540:2000
Electroless Nickel Low, medium, high phosphorus. Non-magnetic Selective, rack and barrel Steel, Copper Alloys, Aluminium, Die Castings DEF 03-5, AMS 2404, MIL-C-26074, AMS 2405, AMS 2433, ASTM B656, ASTM B733, BS EN ISO 4527:2003
Tin Bright and dull Reel to Reel (all over, selective) barrel and rack Steel, Copper Alloys, Aluminium DEF 03-8, BS 1872, MIL-T-10727 REPLACED BY ASTM B545
Tin/Lead 60/40. 90/10 Reel to Reel (all over, selective), barrel and rack Steel, Copper Alloys, Aluminium BS6137, DEF03-15, AMS-P- 81728
White Bronze Semi-bright Barrel and rack Steel, Copper Alloys Customer Specification
Zinc Cobalt Passivated. Clear-Colour. Black and Olive Drab Rack Steel, Copper Alloys, Aluminium Customer Specification
Zinc Nickel Passivated black. Rack Aluminium Customer Specification
Aluminium Conversion Coating Alocrom 1200
Iridite NCP
SurTec 650
Rack Suitable Aluminium DEF 03-18, MIL-C-5541
OTHER PROCESSES Heat treatment: Adhesion enhancement, hardening, stress relieving, de-embrittlement, in nitrogen
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