Magnesium Anode

Short Description:

Magnesium anode is used as a sacrificial anode in cathodic protection. This type of anode has high chemical activity, its electrode potential is rather negative, and the driving voltage is quite high. Besides, magnesium anode is difficult to form effective protective film on the magnesium surface. In water medium, the protective film is easy to dissolve, and the magnesium self-corrosion is quite strong. Therefore, if it is placed within a system that uses large amounts water, it attracts the corrosion away from other components.

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Advantage

The most common metals used in the manufacture anodes include zinc, aluminium and magnesium.

The magnesium anode is characterized by small density, big theory electric capacity, low potential negative polarization rate and large driving voltage for iron and steel.

Our High Potential Magnesium Anodes and Standard Magnesium Anodes can meet your different requirements.

Application

Magnesium anodes are effective and affordable for Anti-corrosion of buried pipeline buried pipeline, onshore platform, huge boiler and steel structures in salt and fresh water, Including: Hulls of ships and various other boats; Water storage tanks; Piers, docks, and wharfs; Pipelines; Heat exchangers, etc.

Corroco is the approval Mg anode manufacturer of ARAMCO, its Pure Mg anode, Mg-Mn anode, Mg-Al-Zn anode are widely used in pipeline, tank protection of the world.

Chemical Compositions of Cast Magnesium Anodes

Element		Anode Type
		High Potential	AZ63B(HIA)	AZ63C(HIB)	AZ63D(HIC)	AZ31
Mg		Bal	Bal	Bal	Bal	Bal
Al		<0.01	5.30-6.70	5.30-6.70	5.0-7.0	2.70-3.50
Zn		-	2.50-3.50	2.50-3.50	2.0-4.0	0.70-1.70
Mn		0.50-1.30	0.15-0.70	0.15-0.70	0.15-0.70	0.15-0.60
Si(max)		0.05	0.10	0.30	0.30	0.05
Cu(max)		0.02	0.02	0.05	0.10	0.01
Ni(max)		0.001	0.002	0.003	0.003	0.003
Fe(max)		0.03	0.005	0.005	0.005	0.005
Other Imp.(max)	Each	0.05	-	-	-	-
	Total	0.30	0.30	0.30	0.30	0.30

Electrochemical Properties

TYPE ITEM	Open Voltage (-V,SCE)	Close Voltage (-V,SCE)	Actual Capacity (A.h/LB)	Efficiency %
High Potential	1.70-1.78	1.50-1.60	>500	>50
AZ63	1.50-1.55	1.45-1.50	>550	>55
AZ31	1.50-1.55	1.45-1.50	>550	>55

Parameter:

D type	Type	Weight Kg(ib)	Dimension mm(inch)
			A		B		C
	9D2	4.082(9)	69.9(2 3/4)		549.3(21 5/8)		76.2(3)
	14D2	6.350(14)	69.9(2 3/4)		850.9(33 1/2)		76.2(3)
	20D2	9.072(20)	69.9(2 3/4)		1212.9(47 3/4)		76.2(3)
	9D3	4.082(9)	88.9(3 1/2)		352.4(13 7/8)		95.3(3 3/4)
	17D3	7.711(17)	88.9(3 1/2)		641.4(25 1/4)		95.3(3 3/4)
	32D5	14.515(32)	139.7(5 1/2)		504.8(19 7/8)		146.1(5 3/4)
	48D5	21.772(48)	139.7(5 1/2)		765.2(30 1/8)		146.1(5 3/4)
	60D4	27.216(60)	114.3(4 1/2)		114.3(4 1/2)		1460.5(57 1/2)
C type	Type	Diameter (mm)	Length(mm)				Weight(Kg)
			High potential		AZ63
	C25	75	336		325		2.56
	C36	114	202		193		3.7
	C41	114	230		220		4.2
	C77	114	431		412		7.8
	C100	114	560		536		10.2
	C145	146	494		472		14.7
	C227	178	520		497		22.9
	C274	114	1528		1462		28.2
S type	Type	Weight Kg(ib)	Dimension mm(inch)
			A	B		C		L
	3S3	1.4(3)	3 4/5(96.5)	3(76.2)		3(76.2)		4.7(119.4)
	5S3	2.3(5)	3 4/5(96.5)	3(76.2)		3(76.2)		7.7(195.6)
	9S2	4.1(9)	2 4/5(71.1)	2(50.8)		2(50.8)		28(711.2)
	9S3	4.1(9)	3 4/5(96.5)	3(76.2)		3(76.2)		13.6(345.4)
	17S2	7.7(17)	2 4/5(71.1)	2(50.8)		2(50.8)		52.5(1333.5)
	17S3	7.7(17)	3 4/5(96.5)	3(76.2)		3(76.2)		25.6(650.2)
	17S4	7.7(17)	4(101.6)	3 1/5(81.3)		4(101.6)		18(457.2)
	20S2	9.1(20)	2 4/5(71.1)	2(50.8)		2(50.8)		62(1574.8)
	32S3	14.5(32)	3 4/5(96.5)	3(76.2)		3(76.2)		47(1193.8)
	32S5	14.5(32)	5(127.0)	4 1/5(106.7)		5(127.0)		21.2(538.5)
	40S3	18.1(40)	3 4/5(96.5)	3(76.2)		3(76.2)		60(1524.0)
	48S5	21.8(48)	5(127.0)	4 1/5(106.7)		5(127.0)		31.5(800.1)
	60S4	27.2(60)	4(101.6)	3 1/5(81.3)		4(101.6)		62(1574.8)

	Type	Weight Kg(ib)	Dimension mm(inch)
			A		B		C
D type	9D2	4.082(9)	69.9(2 3/4)		549.3(21 5/8)		76.2(3)
	14D2	6.350(14)	69.9(2 3/4)		850.9(33 1/2)		76.2(3)
	20D2	9.072(20)	69.9(2 3/4)		1212.9(47 3/4)		76.2(3)
	9D3	4.082(9)	88.9(3 1/2)		352.4(13 7/8)		95.3(3 3/4)
	17D3	7.711(17)	88.9(3 1/2)		641.4(25 1/4)		95.3(3 3/4)
	32D5	14.515(32)	139.7(5 1/2)		504.8(19 7/8)		146.1(5 3/4)
	48D5	21.772(48)	139.7(5 1/2)		765.2(30 1/8)		146.1(5 3/4)
	60D4	27.216(60)	114.3(4 1/2)		114.3(4 1/2)		1460.5(57 1/2)
C type	Type	Diameter (mm)	Length(mm)				Weight(Kg)
			High potential		AZ63
	C25	75	336		325		2.56
	C36	114	202		193		3.7
	C41	114	230		220		4.2
	C77	114	431		412		7.8
	C100	114	560		536		10.2
	C145	146	494		472		14.7
	C227	178	520		497		22.9
	C274	114	1528		1462		28.2
S type	Type	Weight Kg(ib)	Dimension mm(inch)
			A	B		C		L
	3S3	1.4(3)	3 4/5(96.5)	3(76.2)		3(76.2)		4.7(119.4)
	5S3	2.3(5)	3 4/5(96.5)	3(76.2)		3(76.2)		7.7(195.6)
	9S2	4.1(9)	2 4/5(71.1)	2(50.8)		2(50.8)		28(711.2)
	9S3	4.1(9)	3 4/5(96.5)	3(76.2)		3(76.2)		13.6(345.4)
	17S2	7.7(17)	2 4/5(71.1)	2(50.8)		2(50.8)		52.5(1333.5)
	17S3	7.7(17)	3 4/5(96.5)	3(76.2)		3(76.2)		25.6(650.2)
	17S4	7.7(17)	4(101.6)	3 1/5(81.3)		4(101.6)		18(457.2)
	20S2	9.1(20)	2 4/5(71.1)	2(50.8)		2(50.8)		62(1574.8)
	32S3	14.5(32)	3 4/5(96.5)	3(76.2)		3(76.2)		47(1193.8)
	32S5	14.5(32)	5(127.0)	4 1/5(106.7)		5(127.0)		21.2(538.5)
	40S3	18.1(40)	3 4/5(96.5)	3(76.2)		3(76.2)		60(1524.0)
	48S5	21.8(48)	5(127.0)	4 1/5(106.7)		5(127.0)		31.5(800.1)
	60S4	27.2(60)	4(101.6)	3 1/5(81.3)		4(101.6)		62(1574.8)