MMO Ribbon Anode

This MMO ribbon anode is highly conductive whilst maintaining a low consumption rate, providing effective protection for 50 years or more. It is composed of titanium ribbon substrate coated with a Ir-Ta mixed metal oxide catalyst.

Our MMO ribbon anode is manufactured using a bespoke automated production line which ensures meticulous titanium substrate preparation and a homogeneous coating application with superior adhesion properties. The current production capacity is up to one million meters per year.

MMO ribbon anodes are used for cathodic protection applications where there is a high current demand in limited space. It can be directly buried into fine sand without any need for carbon backfill. Our mixed metal oxide ribbon anodes are suitable for use on both newly constructed above ground storage tanks with secondary containment liners, and existing tanks utilizing a double-bottom construction.

Titanium conductor bars are usually used in conjunction with the MMO ribbon anode, acting as an inert conductor to evenly distribute the CP current throughout the system. MMO ribbon is often spot welded to the titanium conductor bar at the point of crossover, forming a grid arrangement, reducing attenuation losses. The anode is then connected to the positive cable through mechanical rod connectors.



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Quality Substrate Material

The titanium substrate of the anode is selected according to ASTM B265 Grade 1 standard requirements. 

Excellent Resistance in Acidic Medium

Ir-Ta catalyzed coating on the surface creates a low resistance for improved anode performances. They can be used in sand with various levels of moisture and salt content without any carbon filling materials required.

Dimensional Stability

Because the titanium substrate is naturally passivated by an oxidizing film, the ribbon anode remains dimensionally stable over time. Direct current transfer is accomplished through the mixed metal oxide catalyst which is highly conductive, and fully oxidized so that higher current outputs are achievable.

Electrochemical Properties

Item No. Electrical Resistance Current Density Current Output
For 20 yrs. For 30 yrs. For 40 yrs. For 50 yrs.
JA–MMO–R01 0.45 Ω/ft. (0.14 Ω/m) 0.278 A/ft² (3.0 A/m²) 32 mA/ft. (105 mA/m) 21 mA/ft. (70 mA/m) 16 mA/ft. (53 mA/m) 5.2 mA/ft. (17 mA/m)
JA–MMO–R02 0.021 Ω/ft. (0.07 Ω/m) 64 mA/ft. (210 mA/m) 43 mA/ft. (140 mA/m) 32 mA/ft. (105 mA/m) 25.6 mA/ft. (86 mA/m)


Item No. Width Thickness Cross Section Surface Area Coil Length Weight
JA–MMO–R01 1/4” (6.3 mm) 0.025” (0.635 mm) 0.006” (4.03 m㎡) 0.014 ㎡/m 500 ft. (152 m) 6.2 lbs (2.8 kg)
JA–MMO–R02 1/2” (12.7 mm) 0.025” (0.635 mm) 0.012” (8.06 m㎡) 0.027 ㎡/m 500 ft. (152 m) 12.3 lbs (5.6 kg)

Main Technical Parameters




Iridium Oxide (IrO2), Tantalum Oxide (Ta2O5)




6.35×0.635mm (1/4″×0.025″)


500 ft. (152 m)

Surface Area

0.014 m²/m


2.8 kg (6.17 lbs)

Electrical Resistance

0.138 Ω/m (0.45 Ω/ft.)

Current Density

3 A/m² (0.278 A/ft²)

Current Output

7 mA/m (5.185 mA/ft.)




Storage Tank

Design Life

≥ 50 years


We employ rigorous foundry internal testing standards to ensure the optimum lifespan and performance of our Anodes. Each anode is labelled with a unique serial number for quality tracking. Third party testing is conducted by customer’s special request at extra charge.

Technical Measurement Chemical Composition Electrochemical Performance Physical Properties
Testing Standard ASTM E120 NACE TM0108 / ASTM D3359 Foundry ITP
Testing Content Chemical Analysis Current Output / Anode Life Dimensions & Weight / Coating Thickness
Equipment Optical Emission Spectrometer OBLF QSN 750 JCM-6000 Plus Scanning Electron Microscope / DWW-K-100 Galvanostat / VCC101A Multimeter Calibrated Digital Measuring Devices

Packaging Information

We have strict packing protocols to guarantee safe delivery of our products. Clear shipping marks and documentation make delivery acceptance straightforward and simple.

Item No. Coil Length Coil Dimensions Net Weight Gross Weight
JA-MMO-R01 500ft. (152m) 15.5″ × 15.5″ × 1″ (390 × 390 × 24mm) 6.2 lbs (2.8 kg) 7.1 lbs (3.2 kg)
JA-MMO-R02 500ft. (152m) / 12.3 lbs (5.6 kg) /

Remarks: Custom packing is available upon request.

Shipping Documents:

  • Proforma invoice
  • Packing list
  • Testing reports (Chemical Composition, Electrochemical Properties Test, Certificate of Compliance)
  • Certificate of origin (upon request)

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