MMO Rod Anode
Mixed metal oxide coated titanium rod anodes engineered for hard chrome plating, electrolysis and deep-well cathodic protection, with coating chemistry and rating confirmed against your duty.
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Selection Boundary
Introduction
MMO rod anodes are solid cylindrical titanium rods coated with a precious-metal-oxide layer matched to the target electrochemical reaction. The round cross-section distributes current evenly around the rod, which makes rod formats a practical choice for hard chrome plating tanks, deep-well groundbeds and internal cathodic protection where access is limited. Actual performance depends on rod diameter, active length, coating chemistry, current density and electrolyte chemistry, and is confirmed per quotation rather than stated as a universal value.
Ehisen applies MMO coatings to rod substrates in controlled multi-layers with measured precious-metal loading, and verifies every batch before dispatch. Each anode is engineered to your diameter, active length, connection and operating conditions.
MMO Rod Anode Formats
Standard rod diameters range from 5 to 40 mm. Active length, thread and connection are produced to drawing.
Engineering Basis
The four inputs below define every MMO rod anode quotation. Provide them and we will confirm rod size, active length, coating rating and service life together.
| Engineering Item | Required Definition |
|---|---|
| Target reaction | Anodic main reaction (OER / CER / other) and competing reactions |
| Electrolyte | Full composition, acidity, chloride / fluoride, contaminants |
| Electrical duty | Total current, current-density basis, polarity, peaks |
| Geometry | Rod diameter, active length, connection type |
| Design-life basis | Failure criterion and expected operating hours |
Technical Specifications
Standard parameters are listed below; values marked per order are confirmed against your engineering data.
| Parameter | Specification |
|---|---|
| Substrate | Grade 1 / Grade 2 titanium rod |
| Coating | Mixed metal oxide (IrO₂-based MMO) |
| Coating loading | 8–20 g/m², custom available |
| Rod diameter | Ø 5–40 mm standard |
| Active length | Per drawing, custom available |
| Connection | Threaded / welded / plug-type |
| Current density | Confirmed per order |
| Operating temp | Confirmed per order |
| Service life | Confirmed per loading & conditions |
Coating Control & Surface Quality
Coating loading and uniformity are measured, not assumed — the parameters that actually control anode life and current distribution around the rod.
Coating Loading & Uniformity
Active coating loading is measured and controlled per batch — the value that sets current-density rating and design life.
Bonding & Thermal Cycling
Adhesion and thermal cycling are checked during production to keep the coating stable under thermal and electrochemical load.
Order Basis
Share the five requests below and we will return a quotation with rod size, active length, coating rating and life confirmed together.
| Request | Definition |
|---|---|
| Electrolyte composition | Full formula, acidity, temperature |
| Current duty | Total current / current density / polarity |
| Coating loading target | Thickness or life target |
| Rod geometry | Diameter, active length, drawing |
| Connection | Threaded / welded / plug-type |
Related Products
Not sure which MMO chemistry or format fits your reaction? The links below cover the dedicated MMO families and the platinum option.
More Titanium Anode Products
FAQ
What is an MMO rod anode?
How long does an MMO rod anode last?
Can an MMO rod anode be re-coated after its coating wears out?
Get a Quote for Your Application
Send your electrolyte composition, electrical duty, rod geometry and design-life target — we will confirm coating chemistry, loading, current-density rating and service life together, within 24 hours.
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