China Magnesium Anode manufacturer

3/4 NPT X 20.62 Az31b Magnesium Anode Rod , Extruded Water Heater Anode

Product Details:
Place of Origin: CHINA
Brand Name: HIGH BROAD
Certification: ISO
Payment & Shipping Terms:
Minimum Order Quantity: 1000kgs
Packaging Details: Anode rod in plywooden case
Delivery Time: 14 days
Payment Terms: T/T, Western Union, L/C, D/P
Supply Ability: 5000 tons per year
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Detail Information

Material: Az31b Type: Anode Rod For Hot Water Heater
Process: Extruded Standard: ASTM

Product Description



ASTM B 843-1995 water heater anode rod


Application of our magmesium anode rod:


Water Heater,Water container,Pre-polarization of steel structure in seawater,Gas pipe,Anticorrosion of steel and iron structure where high resistant and electrolyte(soil and water) existed.

3/4 NPT X 20.62 Az31b Magnesium Anode Rod , Extruded Water Heater Anode

Standard of Our water heater anode rod:


High Pure Magnesium
For Suburban Water Heater
9 1/4'' Overall Length
Saves Water Heaters From Harmful Water Contaminants
3/4'' NPT Thread

Type of Our water heater anode rod: 


Extruded Magnesium Anode


Chemical composition %

Alloy Al Mn Zn
Other Imp.
each total
AZ31B 2.5-3.5 0.2-1.0 0.6-1.4 0.04 0.10 0.01 0.001 0.005 --- 0.30
Mg-Mn 0.01 max 0.5-1.3 --- --- --- 0.02 0.001 0.03 0.05 0.30


Specification and Dimension

Diameter(inch) Core eccentric(inch) Core diameter(inch) Straightness(inch/ 2 ft length) Weight(lbs/inch)
0.675-0.020 0.050 0.135 0.060 0.025
0.750-0.020 1/16 0.135 0.040 0.031
0.800-0.020 1/16 0.135 0.040 0.035
0.840-0.020 1/16 0.135 0.040 0.038
0.900-0.020 1/16 0.135 0.040 0.043
1.050-0.020 1/16 0.135 0.040 0.057
1.315-0.020 1/16 0.135 0.040 0.089

* We also take customers’ requirements order.


The role of the sacrificial anode rod


The anode rod is the most important factor in determining the working life of your water heater.

An anode rod is a steel core wire surrounded with one of three different metals.

These metals include aluminum, magnesium, and zinc.

The rod is screwed into the top of your water heater and protects your water heater from rusting.

When the tank is filled with water the anode rod sacrifices itself to protect the exposed steel of the water heater, through a method called electrolysis. Electrolysis happens when there are two pieces of metal connected inside of water, the process makes the anode rod corrode in place of the exposed steel in your water heater. During this process the more noble (less reactive) metal will corrode over the less (more reactive) noble metal. Aluminum, magnesium, and zinc are all much less noble than steel, meaning they will corrode before the steel, which is why they are used for anode rods.


Electrochemical Performance


Electrode Potential

-V(vs Cu/CuSO4)

Current Efficiency

%(vs Cu/CuSO4)

Generating Current

(A.h)/kg(vs Cu/CuSO4)

HAL- I 1.57 85 1150
HAL- I 1.15 85 1150

3/4 NPT X 20.62 Az31b Magnesium Anode Rod , Extruded Water Heater Anode

Lucky Liu

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