Sacrificial Anodes
for Hulls

Standard Hull-Bolted Anode Dimensions and Weights

Anode Type	Al / Zn	Gross Weight (kg)	Net Weight (kg)	L1 (mm)	L2 (mm)	W (mm)	T (mm)	D (mm)
A3.5HB	Al	3.6	3.5	160	300	150	32	26
A5.0HB	Al	5.2	5	160	300	150	50	26
A6.5HB	Al	6.7	6.5	160	300	150	60	26
A7.0HB	Al	7.2	7	230	450	120	50	16
A12.5HB	Al	12.8	12.5	160	300	150	115	26
Z10.0HB	Zn	10.2	10	160	300	150	32	26
Z15.2HB	Zn	15.4	15.2	160	300	150	50	26
Z18.7HB	Zn	19.0	18.7	160	300	150	60	26
Z18.4HB	Zn	18.6	18.4	230	450	120	50	16
Z35.9HB	Zn	36.3	35.9	160	300	150	115	26

Standard Hull-Welded Anode Dimensions and Weights

Anode Type	Al / Zn	Gross Weight (kg)	Net Weight (kg)	L (mm)	W (mm)	T (mm)	D (mm)
A1.0H1	Al	1.2	1.0	150	58	45	300
A2.0H1	Al	2.2	2.0	200	100	40	350
A5.0H1	Al	5.5	5.0	300	150	50	450
A12.0H1	Al	12.5	12.0	530	130	66	680
A14.0H1	Al	14.6	14.0	610	135	70	760
Z1.0H1	Zn	1.3	1.0	238	32	23	388
Z3.0H1	Zn	3.1	3.0	160	85	33	310
Z9.5H1	Zn	9.7	9.5	355	85	45	505
Z15.0H1	Zn	16.0	15.0	450	155	31	600
Z30.0H1	Zn	31.4	30.0	200	100	40	350

Available Zinc and Aluminum Alloys

- The Deep7 aluminum alloy was designed as an effective, offshore alloy, for use in cold, deep water environments. The low Iron (Fe) content of the alloy ensures that it activates in lower temperatures and protects the platform or pipeline it is connected to for the designed life of the cathodic protection system.

- The Deep10 aluminum alloy was designed as an effective, general purpose offshore alloy, for use in tropical water environments.

ZINC MIL-A-18001-K - MIL Spec alloys are ideal for fresh or brackish water.

Alloy Type			ZINC MIL-A-18001-K
Iron (Fe)	0.07 max	0.10 max	0.005 max
Silicon (Si)	0.10 max	0.10 max	N/A (0.00)
Copper (Cu)	0.003 max	0.006 max	0.005 max
Zinc (Zn)	4.75 - 5.25	2.0 - 6.0	remainder
Indium (In)	0.015 - 0.025	0.01 - 0.05	N/A (0.00)
Titanium (Ti)	0.025 max	0.025 max	N/A (0.00)
Others (each)	0.02 max	0.02 max	0.10 max
Aluminum (Al)	remainder	remainder	0.1 - 0.5
Lead (Pb)	N/A (0.00)	N/A (0.00)	0.006 max
Cadmium (Cd)	N/A (0.00)	N/A (0.00)	0.025 - 0.07

Electrochemical Properties

Alloy Type			ZINC MIL-A-18001-K
Open Circuit Potential	(-) 1.08 V vs Ag/AgCl sw.	(-) 1.08 V vs Ag/AgCl sw.	-1.05 Volts (Ag/AgCl)
Closed Circuit Potential(1)	(-) 1.05 V vs Ag/AgCl sw,	(-) 1.05 V vs Ag/AgCl sw,	N/A
Seawater Capacity @25C	1100 A-Hr/lb. (2420 A-Hr/Kg.)	1100 A-Hr/lb. (2420 A-Hr/Kg.)	N/A
Seawater Capacity @ 5C	1100 A-Hr/lb. (2420 A-Hr/Kg.)	Variable (2)	N/A
Seabed Mud Capacity (3)	950 A-Hr/lb (2090 A-hr/Kg.)	950 A-Hr/lb (2090 A-hr/Kg.)	N/A
Seabed Mud Capacity @ 5C	950 A-Hr/lb (2090 A-hr/Kg.)	Variable (2)	N/A
Nominal Current Capacity	N/A	N/A	780 amp-hr/kg

Physical Properties

Alloy Type
Alloy Density	0.098 lb/in3 (2.71 gm/cm3)	0.098 lb/in3 (2.71 gm/cm3)
Cost Ratio	Low Iron (Fe) Aluminum (Al) Ingot < 0.05 Fe	Normal Grade Al Sows
Raw Material & Conversion	1.10	1.00

Recommended Applications

Alloy Type
Offshore Structures (Platforms, Pipelines, FPS, FPSO, MODU, SPAR, Subsea Structure, Risers, Wind Turbine, etc), Hulls	Any Ocean. Any Depth. Any Temperature.	Any Tropical Ocean < 600 fsw (180 Msw) with mean water temperature higher than 45 F (7C).