Different Materials Of Spark Plugs

The type of material that your engine spark plug is made of can influence the overall performance of your engine either positively or negatively. But how do you know the best spark plug material to use since there are various types? Don’t panic, this post is researched for you to know the different materials of spark plugs so you can make an informed decision.

What Are The Materials That Make Up A Spark Plug?

Mostly, copper core is the main material of spark plugs, that is why the most common name for spark plug is “copper” spark plug. However, you will find nickel-alloy in standard spark plug material but the reason is for it to be used to fuse copper-core electrodes. In conclusion, copper-core helps copper spark plugs operate cooler and provide additional power in performance driving situations.

What Is The Purpose Of Metal Material In Spark Plugs?

Metals in spark plugs serve as a channel to transfer the high voltage from the spark plug wire to the spark plug with the purpose of sparking when it goes through the small gap in-between the side electrode and the center electrode. In addition, these sparks are important because it starts the combustion process.

Which Spark Plug Material Type Is Better

Copper

Spark plug material like copper gives solidity and good conductivity. In addition, the copper is soft in nature and they give a low melting point, but they can only last for minutes.

Advantages

• Provide more power in a performance driving situation.
• Low cost
• Heat transfer capability
• Makes the spark plug run cooler

    Disadvantages

• Short life-span
• Quick thermal expansion
• Prone to fouling
• Susceptible to corrosion

Iridium

Iridium is a metallic and durable spark plug material. It features an electrode material with high melting point, they offer high combustion and ensures optimal performance. In addition, iridium materials in spark plugs make the spark plug last up to 25% longer than a standard spark plug.

    Advantages

• Quicker ignition and faster engine power
• Longer service life
• Higher heat resistance
• More resistance to corrosion
• Greater fuel economy
• Minimum sudden failure
• Requires less voltage
• Not easily prone to deterioration
• More Durable

    Disadvantages

• It’s more expensive
• The dust is highly inflammable
• Some coatings can be breakable
• No power boost assurance
• Compatibility issues with older engines

Platinum

Platinum is a type of material that features a higher melting point and it’s more harder compared to nickel alloy. In essence, it holds its sharp edge up to 100,000 miles which makes it much longer than that of a conventional spark plug.

    Advantages

• Prevent fouling
• Longevity
• Run a little hotter
• Cost-effective
• High resistance to corrosion
• Reduced gap growth
• Consistent Spark
• Reduce misfiring risk
• Requires low maintenance
• Good for modern engines
• Minimum electrode wear

    Disadvantages

• Less conductivity
• Offer inferior performance
• Costlier
• Wear down overtime
• Compatibility issue

Double platinum

Spark plugs with double platinum materials feature a platinum disc on both center and side electrodes. In addition, the disc on both the center and side electrodes gives the spark plugs the ability to fire twice, once in the compression stroke cylinder and the last one in the exhaust stroke cylinder.

Advantages

• Simplified mechanical arrangement
• Long service life
• Heat transfer
• High resistance to corrosion and seizure
• Greater resilience in harsh temperature
• Reduced misfires

    Disadvantages

• Not suitable for all engines
• Misapplication issues
• Limited improvement over single platinum

Silver 

Silver is one of the best materials for a spark plug core electrode, it’s quick to dissipate heat, which gives additional power and lower the temperature of the spark plug. In addition, the stronger the spark, the faster the flame front and when the flame has speed, it helps to give higher and smoother RPM range in your engines.

Advantages

• Best thermal, center electrode, and electrical conductor for all metals
• Minimize premature wear on leads, coil, and other ignition parts.
• Improved ignition performance
• Requires lower voltage
• Resist fouling
• Compatible with high performance engines
• Suitable for wide range of applications

Disadvantages

• Short lifespan
• Not ideal for all types of engine
• Potential overheating
• Limited availability
• High cost for frequent replacements

How To Select The Best Spark Plug Material For Your Vehicle

Selecting the best material for your engine comes with some paramount consideration, here are some things to consider:

• Consider your engine manufacturer’s specification
• Evaluate your driving standard conditions
• Evaluate the weight cost and benefits

FAQ

Does The Type Of Spark Plug You Buy Matter?

Yes, the type of spark plug you buy matters. Whenever you want to buy a spark plug, buy the type that matches your engine’s design.

Conclusion

In conclusion, understanding the different materials of spark plug matters for you to make an informed decision as there are lots of materials out there.