Aluminium Anode

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Aluminium Anode

Aluminium Anode

The chemical composition of DERUI aluminum anodes is based on the well established Al-Zn-In alloy and it is suitable for most sea water applications. The quality of the anode and especially the alloying procedure is of outmost importance for the performance of aluminum anodes which are generally more susceptible to passivation than zinc. However aluminum alloys have an electrochemical capacity which is more than 3 times greater than the capacity of zinc and it is nowadays the most widely used alloy for the Cathodic protection of ships and other marine metallic structures.

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Product Details

DERUI anodes are manufactured from primary metals of high purity, homogenized in large scale melting furnaces and have pre-casting quality control in order to secure that the concentration of all important elements (either impurities or alloying elements) even in very low concentrations is strictly conforming with the specification.
Other special formulations of Al Alloys are also available but mainly used in special offshore application (protection of sub sea pipelines, jetties etc).

The chemical composition of DERUI aluminum anodes is based on the well established Al-Zn-In alloy and it is suitable for most sea water applications. The quality of the anode and especially the alloying procedure is of outmost importance for the performance of aluminum anodes which are generally more susceptible to passivation than zinc. However aluminum alloys have an electrochemical capacity which is more than 3 times greater than the capacity of zinc and it is nowadays the most widely used alloy for the Cathodic protection of ships and other marine metallic structures.
DERUI anodes are manufactured from primary metals of high purity, homogenized in large scale melting furnaces and have pre-casting quality control in order to secure that the concentration of all important elements (either impurities or alloying elemnts) even in very low concentrations is strictly conforming with the specification.

Typical Application
Marine
Oil & Gas
Port & Harbors
Offshore wind farms

Specifications

Chemical Composition
Element
PL842
ISO15589-2
EN12496 A3
Zinc
3.0-5.0%
2.5-5.75%
4.75-5.75%
Indium
0.016-0.040%
0.16-0.40%
0.16-0.20%
Silicon
<0.08%
<0.12%
0.08-0.012%
Iron
<0.09%
<0.09%
<0.06%
Copper
<0.01%
<0.003%
<0.0035
Cadmium
<0.002%

<0.0025
Other single
<0.02%
<0.02%
<0.02%
Total Others
<0.10%
<0.10%
<0.055
Aluminium
Balance
Balance
Balance
Electrochemical characteristics

Capacity min
2500 Ahr/Kg
2500 Ahr/Kg
2500 Ahr/Kg
Potential (Ag/AgCl)
-1.09V
-1.09V
-1.09V
Consumption rate
3.5Kg/year
3.5Kg/year
3.5Kg/year
In order to improve anode performance and guarantee that concentration of residual elements is low enough, we use high purity primary aluminum row materials to produce our alloys.
Bismuth, Gallium and Manganese can further enhance the de-passivating action of Indium and improve the dissolution pattern of the anode.

Flush mounted anodes

Type
Dimensions (mm)
Net(kg)
Gross)kg)
A30
275X128X32
2.7
3.5
A60
450X100X62
5.0
6.2
A100
550X128X50
8.5
9.9
A120
555X132X68
10.3
11.8
A140
660X132X68
12.3
14.1
A150
920X128X48
13.0
15.0
A175
920X128X52
14.8
17.5
A230
920X128X71
20.3
23.0

Type
Dimensions (mm)
Net (kg)
Gross (kg)
AT30
220X65+50)X75
2.5
3.0
AT50
380X(65+50)X75
4.3
5.0
AT80
610X(65+50)X75
7.1
8.0
AT110
765X(65+50)X75
8.9
10.0
AT130
630X(85+75)X95
12.4
13.3
AT159
750X(85+75)X95
14.5
15.6
AT210
1000X(85+75)X95
19.3
20.6
AT250
1220X(85+75)X95
23.5
25.0
AT310
1500X(85+75)X95
29.0
30.7
AT160
1500X(60+45)X68
13.5
15.3
AT180
1500X(60+45)X68
15.5
17.3

Trapezoidal anode with “cowhorn” tubular insert protruding from both ends “SOE”

Type
LXWXH (mm)
OD (mm)
NW (kg)
ASOE350
1300X101X101
20
35
ASOE800
2360X114X114
25
80
ASOE500
1300X120X120
20
50
ASOE680
1520X133X127
20
68
ASOE1190
1525X184X159
25
119
ASOE1480
2373X160X162
60.3
148
ASOE1750
2500X190X190
114.3
175
ASOE2400
2622X210X10
114.3
240
ASOE3300
2372X252X244
114.3
330
ASOE4350
2910X254X257
114.3
435
ASOE5650
2973X283X283
114.3
565

Trapezoidal anode with “cowhorn” tubular insert protruding from back face “SOB”

Trapezoidal anode with “goalpost” tubular insert protruding from back face “SOG”

Trapezoidal anode with tubular insert protruding from doth ends“SOS”

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Element	PL842	ISO15589-2	EN12496 A3
Zinc	3.0-5.0%	2.5-5.75%	4.75-5.75%
Indium	0.016-0.040%	0.16-0.40%	0.16-0.20%
Silicon	<0.08%	<0.12%	0.08-0.012%
Iron	<0.09%	<0.09%	<0.06%
Copper	<0.01%	<0.003%	<0.0035
Cadmium	<0.002%		<0.0025
Other single	<0.02%	<0.02%	<0.02%
Total Others	<0.10%	<0.10%	<0.055
Aluminium	Balance	Balance	Balance
Electrochemical characteristics
Capacity min	2500 Ahr/Kg	2500 Ahr/Kg	2500 Ahr/Kg
Potential (Ag/AgCl)	-1.09V	-1.09V	-1.09V
Consumption rate	3.5Kg/year	3.5Kg/year	3.5Kg/year

Type	Dimensions (mm)	Net(kg)	Gross)kg)
A30	275X128X32	2.7	3.5
A60	450X100X62	5.0	6.2
A100	550X128X50	8.5	9.9
A120	555X132X68	10.3	11.8
A140	660X132X68	12.3	14.1
A150	920X128X48	13.0	15.0
A175	920X128X52	14.8	17.5
A230	920X128X71	20.3	23.0

Type	Dimensions (mm)	Net (kg)	Gross (kg)
AT30	220X65+50)X75	2.5	3.0
AT50	380X(65+50)X75	4.3	5.0
AT80	610X(65+50)X75	7.1	8.0
AT110	765X(65+50)X75	8.9	10.0
AT130	630X(85+75)X95	12.4	13.3
AT159	750X(85+75)X95	14.5	15.6
AT210	1000X(85+75)X95	19.3	20.6
AT250	1220X(85+75)X95	23.5	25.0
AT310	1500X(85+75)X95	29.0	30.7
AT160	1500X(60+45)X68	13.5	15.3
AT180	1500X(60+45)X68	15.5	17.3

Type	LXWXH (mm)	OD (mm)	NW (kg)
ASOE350	1300X101X101	20	35
ASOE800	2360X114X114	25	80
ASOE500	1300X120X120	20	50
ASOE680	1520X133X127	20	68
ASOE1190	1525X184X159	25	119
ASOE1480	2373X160X162	60.3	148
ASOE1750	2500X190X190	114.3	175
ASOE2400	2622X210X10	114.3	240
ASOE3300	2372X252X244	114.3	330
ASOE4350	2910X254X257	114.3	435
ASOE5650	2973X283X283	114.3	565