Sacrificial Anode Cathodic Protection (SACP)

Aluminium Anodes

Vyas Metal’s Aluminum Anodes for use on hull of ship, barges, tugs etc. operating in seawater. All Anodes are faired of tapered to minimize turbulence. The Anodes Core are made out of low carbon structural steel corresponding to IS 2062 suitable for welding, with a carbon equivalent of less than 0.45%, shot blasted prior to casting.

Chemical Composition of Aluminum Alloys
Silicon	0.13%max
Iron	0.13%max
Copper	0.05%max.
Indium	0.01-0.05%
Zinc	2.0 – 5.0%
Aluminum	Remainder

Electrochemical Properties
Open Circuit Potential	–1.05V to –1.07V (Ag/AgCl reference Cell)
Electrochemical Capacity	2550 Amp-Hr/Kg
Consumption Rate	3.4kg/Amp-Yr

Standard Anodes Size for mounting flush to the hull shown below for Aluminium Welded Anodes. Other types or sizes can be custom-made upon request.

Anode TYPE	L1	L2	W	H	Core Dims	Core Dims	GW kg
V-A-25	305	365	102	40	25 x 6	2.1	2.5
V-A-50	445	505	125	40	30 x 6	4.3	5.0
V-A-80	640	700	125	43	30 x 6	7.0	8.0
V-A-116	800	880.	125	50	40 x 6	10.0	11.6
V-A-130	890	960	125	47	40 x 6	11.2	13.0

Anode TYPE	L	W	H	C-C	NW	GW kg
V-15-AB	200	100	30	110	1.3	1.5
V-33-AB	300	150	30	160	3.1	3.3
V-55-AB	300	150	50	160	5.3	5.5
V-107-AB	300	200	65	160	10.5	10.7

Standard Anodes Size for mounting flush to the hull shown below for Aluminium bolt-on Anodes. Other types or sizes can be custom-made upon request.

Standard Anodes Size for Water Ballast Tank shown below for Aluminium Welded type. Other types or sizes can be custom-made upon request.

Anode TYPE	L1	L2	W	H	Core Dia	NW	GW kg
V-40-AT	305	765	65	75	13	3.3	3.8
V-81-AT	610	1070	65	75	13	7.1	8.1
V-100-AT	765	1225	65	75	13	8.7	10
V-130-AT	1015	1475	65	75	13	11.6	13.1
V-160-AT	1270	1730	65	75	13	14.5	16.3

Note :

Do remember its better to spend a little on replacing your anodes on regular basis than the thousands you might incur buying new propeller shaft or a new stern-drive lower unit.

Sacrificial Anode Cathodic Protection (SACP)

Aluminium Anodes

Zinc Anodes

Vyas Metal’s Zinc Anodes are designed for protection of various types of vessel such as ships, barges, tugs and tankers etc. Anodes are available in many configuration including weld-on and bolt-on mounting system as per to the latest Mil-Spec also are covered by the ASTM-418-95 Type II Alloys.

Chemical Composition of Zinc Alloys
Iron	0.005%max
Copper	0.005%max
Cadmium	0.025-0.15%
Lead	0.006max%
Aluminium	0.1 – 0.5%
Zinc	Remainder

Electrochemical Properties
Open Circuit Potential	–0.95 V to –1.00V (Ag/AgCl reference Cell)
Electrochemical Capacity	780 Amp-Hr/Kg
Consumption Rate	11.25kg/Amp-Yr

Standard Anodes Size for mounting flush to the hull shown below for Zinc Welded Anodes. Other types or sizes can be custom-made upon request.

Anode TYPE	L1	L2	W	H	Core Dims	NW kg	GW kg
V-Z-30	250	300	80	25	20 x 3	2.8	3.0
V-Z-50	300	350	80	32	30 x 6	4.6	5.1
V-Z-85	400	490	97	35	30 x 6	8.1	8.5
V-Z-100	320	425	165	35	40 x 8	9.0	10.0
V-Z-160	550	620	170	43	30 x 6	15.1	16.0

Anode TYPE	L	W	H	C-C	NW	GW kg
V-36-ZB	200	100	30	110	3.4	3.6
V-83-ZB	300	150	30	160	8.1	8.3
V-138-ZB	300	150	50	160	13.6	13.8
V-152-ZB	300	200	40	160	15.0	15.2

Standard Anodes Size for mounting flush to the hull shown below for Zinc bolt-on Anodes. Other types or sizes can be custom-made upon request.

Standard Anodes Size for Water Ballast Tank shown below for Zinc Welded type Other types or sizes can be custom-made upon request.

Anode TYPE	L1	L2	W	H	Core Dia	NW	GW kg
V-110-ZT	610	1066	64	57	13	10.6	11.3
V-160-ZT	610	1066	77	69	13	15.2	15.9
V-210-ZT	610	1066	83	79	13	20.4	21.1
V-220-ZT	1015	1475	65	75	13	11.6	13.1
V-160-AT	1270	1730	65	75	13	14.5	16.3

Note :

Do remember its better to spend a little on replacing your anodes on regular basis than the thousands you might incur buying new propeller shaft or a new stern-drive lower unit.