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Galvanic Anode

Galvanic Anode Galvanic anode is also called 'sacrificial anode', is used to protect the hulls of ships, water heaters, pipelines, distribution systems, above-ground tanks, underground tanks, and refineries. The anodes in sacrificial anode cathodic protection systems must be periodically inspected and replaced when consumed. Classified by Usage: 1. Welding Type Sacrificial Anode for Ship Hull (Single Iron Foot) 2. Welding Type Sacrificial Anode for Ship Hull (Double Iron Foot) 3. Bolt Connection Type Sacrificial Anode for Ship Hull 4. Sacrificial Anode for Ballast Water Tank 5. Sacrificial Anode for Offshore Engineering Facilities 6. Sacrificial Anode for Harbor Engineering Facilities 7. Strip Shape Sacrificial Anode for Seawater Cooling System 8. Disc Shape Sacrificial Anode for Seawater Cooling System 9. Sacrificial Anode for Storage Tank Classified by Shapes: Plates, Rods, Extruded Ribbon, Blocks
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Galvanic Anode

Galvanic anode is also called 'sacrificial anode', is used to protect the hulls of ships, water heaters, pipelines, distribution systems, above-ground tanks, underground tanks, and refineries. The anodes in sacrificial anode cathodic protection systems must be periodically inspected and replaced when consumed.

Classified by Usage:

1. Welding Type Sacrificial Anode for Ship Hull (Single Iron Foot)

2. Welding Type Sacrificial Anode for Ship Hull (Double Iron Foot)

3. Bolt Connection Type Sacrificial Anode for Ship Hull

4. Sacrificial Anode for Ballast Water Tank

5. Sacrificial Anode for Offshore Engineering Facilities

6. Sacrificial Anode for Harbor Engineering Facilities

7. Strip Shape Sacrificial Anode for Seawater Cooling System

8. Disc Shape Sacrificial Anode for Seawater Cooling System

9. Sacrificial Anode for Storage Tank

Classified by Shapes: Plates, Rods, Extruded Ribbon, Blocks

Classified by Main Material:

1.Magnesium Alloy Sacrificial Anode
Magnesium alloy sacrificial anode is suitable for the anti-corrosion protection of oil, gas, water supply and drainage pipelines in underground fresh water, underground cables, chemical industry, communication, harbor, ship, reservoir and other projects.

Chemical Composition

Grade

Alloying Elements

Impurity Elements (no greater than)

Al

Zn

Mn

Mg

Fe

Cu

Ni

Si

Ca

MGAZ63B

5.3-6.7

2.5-3.5

0.15-0.60

margin

0.003

0.01

0.001

0.08

-

MGAZ31B

2.5-3.5

0.60-1.4

0.20-1.0

margin

0.003

0.01

0.001

0.08

0.04

MGM1C

≤0.01

-

0.50-1.3

margin

0.01

0.01

0.001

0.05

-

MG

≤0.02

≤0.03

≤0.01

≥99.9%

0.005

0.004

0.001

0.01

-

Electrochemical Performance 

Grade

Open Circuit Potential

Closed Circuit Potential

Actual Capacitance

Current Efficiency

-V,Cu/CuSO4

-V,Cu/CuSO4

-(A*h/kg)

%

MGAZ63B

1.57-1.67

1.52-1.57

≥1210

≥55

MGAZ31B

1.57-1.67

1.47-1.57

≥1210

≥55

MGM1C

1.77-1.82

1.64-1.69

≥1100

≥50

Standard Specification for Magnesium Anode 

Size

Specification

Weight (kg)

Length*(upper bottom+lower bottom)*Height

MG-22

700×(130+150)×125

22.00

MG-14

700×(120+100)×102

14.00

MG-11

700×(110+90)×88

11.00

MG-8

700×(95+75)×75

8.00

MG-4

350×(95+75)×75

4.00

MG-2

350×(55+60)×55

2.00

Note: size can also be produced according to customer’s requirements

2.Aluminum Alloy Sacrificial Anode
Aluminum-Zinc-Indium alloy sacrificial anode is suitable for the metal cathodic protection of ships, mechanical equipment, ballast water tank, tank inner wall, coastal facilities, submarine pipeline, wharf steel pile, offshore platform and others in seawater medium.

Chemical Composition

 

Alloy Type

Zn

In

Cd

Sn

Mg

Si

Ti

Impurity, ≤

Al

Si

Fe

Cu

Al-Zn-In-Sd

2.5-4.5

0.018-0.050

0.005-0.020

-

-

-

-

0.10

0.15

0.01

margin

Al-Zn-In-Sn

2.2-5.2

0.020-0.045

-

0.018-0.035

-

-

-

0.10

0.15

0.01

margin

Al-Zn-In-Si

5.7-7.0

0.025-0.035

-

-

-

0.10-0.15

-

0.10

0.0-15

0.01

margin

Al-Zn-In-Sn-Mg

2.5-4.0

0.020-0.050

-

0.025-0.075

0.50-1.00

-

-

0.10

0.15

0.01

margin

Al-Zn-In-Mg-Ti

4.0-7.0

0.020-0.050

-

-

0.50-1.50

-

0.01-0.08

0.10

0.15

0.01

margin

Electrochemical Properities 

Type/Index/Performance

Open Circuit Potential-V(SCE)

Working Potential-V(SCE)

Actual Capacitance(A.h/kg)

Current Efficiency%

Dissolution Status

Ordinary Aluminum Alloy Sacrificial Anode

1.10-1.18

1.05-1.12

≥2400

≥85

Corrosion products are easy to fall off, the surface dissolution is even

High Efficiency Aluminum Alloy Sacrificial Anode

1.10-1.18

1.05-1.15-2

≥2600

≥90

Highly Activated Aluminum Alloy Sacrificial Anode

1.45-1.50

1.40-1.45

≥2080

≥70

3.Zinc Alloy Sacrificial Anode
Zinc-Aluminum-Cadmium Sacrificial anodes are suitable for the cathodic protection of ships, mechanical equipment, offshore engineering and harbor facilities in fresh water or seawater medium and the pipelines and cables in low resistivity soils.

Chemical Composition (%)

Chemical Element

Al

Cd

Impurity Element

Zn

Fe

Cu

Pb

Si

Content

0.3~0.6

0.05~0.12

≤0.005

≤0.005

≤0.006

≤0.125

margin

Electrochemical Properties 

Electrochemical Properties

Open Circuit Potential
V

Working Potential
V

Actual Capacitance
(Ah/kg)

Consumption Rate
(Ah/kg)

Current Efficiency
%

Dissolution Performance

In Sea Water
(1mA/cm2)

-1.09~-1.05

-1.05~-1.08

≥780

≤11.23

≥95

Surface dissolution is even, while the corrosion products are easy to fall off

In Soil
(0.03mA/cm2)

≤-1.05

≤-1.03

≥530

≤17.25

≥65

Type/Index/Performance

Open Circuit Potential-V(SCE)

Working Potential-V(SCE)

Actual Capacitance(A.h/kg)

Current Efficiency%

Dissolution Status

Ordinary Aluminum Alloy Sacrificial Anode

1.10-1.18

1.05-1.12

≥2400

≥85

Corrosion products are easy to fall off, the surface dissolution is even

High Efficiency Aluminum Alloy Sacrificial Anode

1.10-1.18

1.05-1.15-2

≥2600

≥90

Highly Activated Aluminum Alloy Sacrificial Anode

1.45-1.50

1.40-1.45

≥2080

≥70

4.Impressed Current High Silicon Cast Iron Anode
High silicon cast iron anodes are widely used for cathodic protection of external electric current in offshore oil drilling platforms, underground pipelines, and the underground cable facilities.

Chemical Composition

Product Name

Chemical Element (%)

Impurity Content (%)

Si

Cr

Mn

C

Fe

P

S

High Silicon Cast Iron

14~16

-

0.6~0.8

0.8~1.05

margin

≤0.25

≤0.1

Ferrochrome Silicon

14~16

4.0~4.5

0.6~0.8

0.8~1.05

margin

≤0.25

≤0.1

Electrochemical Performance 

Product Name

Use Environment

Working Current Density (A/m2)

Consumption Rate (kg/A.a)

High Silicon Cast Iron

In seawater

50

0.3~1.0

Ferrochrome Silicon

In fresh water/soil

10

0.05~0.2

Specifications and Sizes 

Number

Specification mm

Weight kg

Anode Cable

Section mm2

Length mm

1

Φ50×1500

22

25

1000

2

Φ75×1200

40

25

1000

3

Φ75×1500

50

25

1000

4

Φ100×1500

90

25

1000

Electrochemical Properties 

Performance /Type /Indicator

Open circuit potential
-V(SCE)

Working potential
-V(SCE)

Actual capacity A·h/kg

Current efficiency
%

Dissolution condition

Ordinary aluminum alloy anode

1.10-1.18

1.05-1.12

≥2400

≥85

Corrosion products are easy to fall off and the surface dissolves evenly.

High efficiency aluminum alloy anode

1.10-1.18

1.05-1.12

≥2600

≥90

Highly activated aluminum alloy anode

1.45-1.50

1.40-1.45

≥2080

≥70

Keyword:
galvanic anode
ship sacrificial anode
marine anode
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