ceramic brake pads

grumpyvette

Administrator
Staff member
IVE only run a few sets of these ceramic brake pads, its been my experience that they don,t work as well, as semi-metalic pads, for basic street use,but they do work fine most of the time,now during the first few minutes of operation, until they heat up a bit I have found they tend to (faintly squeak and slide a bit)and they don,t like getting wet when still cool,,until they are warmed a-bit, but once the car starts to be used, that all goes away, in fact youll be hard pressed to tell the difference between semi metallic and ceramic pads after youve driven for a minute or so, in the first hard use or several mild stops where they require a small bit more foot pressure,if you don,t have power brakes, but they work really well under hard high stress & heat conditions that might cause normal semi-metallic pads to overheat,they wear longer, the major factor is WEAR, they tend to WEAR slower but wear out the rotors slightly faster, in my experience. but the big plus is they don,t leave a ton of dust to pit and dis color your mag wheels, like most semi metallic pads do either.
since rotors are far more costly than brake pads that's not a huge plus in a street car,or minus either way, because youll easily get tens of thousands of miles of wear with either choice thats used only for transportation, IE, used ONLY as a daily driver but it will be a big improvement on a show car or muscle car where you dson,t want to constantly clean your wheels of brake dust.car,or hard driven street, performance car, like most corvettes, or a street/strip car, where changing components takes a back seat to high speed performance and safety.
on the plus side the pads tend to leave less brake dust on wheels and if your into sparkly wheels thats also a benefit.
if your thinking about swapping to the ceramic pads, yes they tend to wear the rotors down a bit faster, but the trade off is much better stopping under high heat and hard loading of the brakes like under constant high performance use, rotors just like pads need to be thought of as expendable components like spark plugs and fan belts, and tires.

as a trade-off I think your ahead in using ceramic pads because when it really matters they work better and more consistently


http://www.hawkperformance.com/performa ... eramic.pdf

http://www.consumerreports.org/cro/cars ... /index.htm

http://www.autoanything.com/brakes/20A50531A1.aspx

http://www.tirerack.com/brakes/tech/tec ... ?techid=88

Why Ceramic Brake Pads?


We want our vehicle's brake system to offer smooth, quiet braking capabilities under a wide range of temperature and road conditions. We don't want brake-generated noise and dust annoying us during our daily driving.

To accommodate this, brake friction materials have evolved significantly over the years. They've gone from asbestos to organic to semi-metallic formulations. Each of these materials has proven to have advantages and disadvantages regarding environmental friendliness, wear, noise and stopping capability.

Asbestos pads caused health issues and organic compounds can't always meet a wide range of braking requirements. Unfortunately the steel strands used in semi-metallic pads to provide strength and conduct heat away from rotors also generate noise and are abrasive enough to increase rotor wear.

Since they were first used on a few original equipment applications in 1985, friction materials that contain ceramic formulations have become recognized for their desirable blend of traits. These pads use ceramic compounds and copper fibers in place of the semi-metallic pad's steel fibers. This allows the ceramic pads to handle high brake temperatures with less heat fade, provide faster recovery after the stop, and generate less dust and wear on both the pads and rotors. And from a comfort standpoint, ceramic compounds provide much quieter braking because the ceramic compound helps dampen noise by generating a frequency beyond the human hearing range.

Another characteristic that makes ceramic materials attractive is the absence of noticeable dust. All brake pads produce dust as they wear. The ingredients in ceramic compounds produce a light colored dust that is much less noticeable and less likely to stick to the wheels. Consequently, wheels and tires maintain a cleaner appearance longer.

Ceramic pads meet or exceed all original equipment standards for durability, stopping distance and noise. According to durability tests, ceramic compounds extend brake life compared to most other semi-metallic and organic materials and outlast other premium pad materials by a significant margin - with no sacrifice in noise control, pad life or braking performance.

This is quite an improvement over organic and semi-metallic brake materials that typically sacrifice pad life to reduce noise, or vice versa.


http://www.brakeworld.com/ceramic-brake-pads.asp

Ceramic Brake Pads
Why Ceramic Brake Pads
Ceramic brake pads have become the braking industry’s buzzword these days with everyone going for the ceramic brake pads. So why ceramic brake pads?

Ceramic brake pads are generally quieter and lower dusting than most OEM pads and organic based brake pads. Many ceramic formulations offer extremely low dusting characteristics, preventing dust from accumulating on your wheels.

Since they were first used on a few original equipment applications in 1985, friction materials that contain ceramic formulations have become recognized for their desirable blend of traits. Instead of the semi-metallic pad’s steel fibers, the ceramic braking pads make use of the ceramic compounds and copper fibers. This allows the ceramic pads to handle high brake temperatures with less heat fade, provide faster recovery after the stop, and generate less dust and wear on both the brake pads and rotors.

Moreover, the ceramic compounds in the ceramic brake pads make the braking much quieter. This happens as the ceramic compounds help dampen noise by generating a frequency that is beyond the human hearing range.

Ceramic pads meet or exceed all original equipment standards for durability, stopping distance and noise. According to durability tests, ceramic compounds extend brake life compared to most other semi-metallic and organic materials and outlast other premium pad materials by a significant margin – with no sacrifice in noise control, pad life or braking performance



Choosing the true ceramic brake pads
Ceramic brake pads are an excellent choice for most vehicles, but there are different quality levels when it comes to ceramic pads. Many companies are now developing so called ceramic pads that are nothing more than an organic pad with a small amount of ceramic content that is coated over the top of the brake pad. Brakeworld.com only carries true ceramic pads that contain ceramic formula throughout the entire pad. In our opinion the best performing ceramic pad with the highest level of ceramic content is the “Ceramicool” brake pad. The Ceramicool brake pad is the quietest pad we have ever experienced, as well as one of the lowest dusting.

Ceramicoolâ„¢ is a revolutionary "true" organic ceramic formulation designed for cool, clean, quiet and long lasting operation for all vehicles. Ceramicoolâ„¢ provides the ultimate in braking friction technology designed as replacement pads for OE ceramic applications or as premium upgrade for all friction materials. Ceramicoolâ„¢ is the "true" ceramic formulation. While other friction manufacturers claim to have "ceramic formulations", they are often nothing more than existing semi-metallic formulations with small amounts of ceramic particles introduced into the mix. Don't be fooled by "ceramic enhanced", trust the "true" ceramic formulation...trust Ceramicoolâ„¢-true ceramic brake pad


CeramicoolTM –True Ceramic Brake Pads
Cool
With state-of-the-art advanced manufacturing process that includes OE style slots and chamfers and premium raw materials, Ceramicoolâ„¢ ceramic brake pad is specifically designed to dissipate heat equal or better than any current formulation on the market. In laboratory testing Ceramicoolâ„¢ brake pads operate up to 350 degrees cooler than the comparable semi-metallic formulations. The result is consistent braking power, without fade and without fail, each and every time you stop your vehicle. Even under the most extreme driving conditions Ceramicoolâ„¢ is the "cool" performer.

Clean
With less wear Ceramicoolâ„¢ brake pad virtually eliminates the unwanted steel fiber dust contamination associated with most semi-metallic formulations. Your vehicle's wheels, rotors and calipers retain their showroom appearance throughout the extra miles provided by the longer life of Ceramicoolâ„¢ brake pads. The superior heat dissipation properties of Ceramicoolâ„¢ brake pads result in minimal rotor wear that extends the life of the braking system. Ceramicoolâ„¢ is an environmentally friendly ceramic formulation.

Quiet
One of the inherent properties of Ceramicoolâ„¢ brake pads is its refined ability to dampen the harsh noises associated with the engagement of semi-metallic pads with the hard metal surface of the rotor. The Ceramicoolâ„¢ organic friction formulation eliminates brake groan and creep noise associated with semi-metallic formulations. Also available are, TruQuiet TruFitâ„¢, noise suppressing shims that can further enhance the benefits of OE style slots and chamfers which are standard on all Ceramicoolâ„¢ brake pads.


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EVEN MORE INFO

http://www.aa1car.com/library/2003/bf30322.htm
 
http://www.ehow.com/about_5519863_ceram ... -pads.html

Ceramic Vs. Kevlar Brake Pads
By Lee Sallings, eHow Contributor
updated: October 12, 2009
I want to do this! What's This?
"In the battle to eliminate the shortcomings of semi-metallic brake pads, two types of technology in brake pad friction compounds have emerged--Kevlar and ceramic--which are now being used to eliminate some of the problems of noise, wear, and dusting associated with traditional semi-metallic brake pads. Each of these pad compounds has shown itself to be an improvement, but each also has some weak areas.

History
1. Semi-metallic brake pads were developed to address the high heat generated by downsizing of disc brake systems in the 1980s. As a result, we began to see increases in brake rotor wear, excessive brake dust, and squealing (along with other noises). The buyers of these vehicles had serious problems with this, and technicians fought daily with these problems, specifically brake noise.

Kevlar pad compounds began arriving in the 1990s to address these problems. Made up of Kevlar and steel, this is still considered to be a semi-metallic pad, but the higher concentration of Kevlar significantly reduced noise. Lower dusting levels were also achieved, but wear remains a problem.

The latest ceramic seems to address all of these concerns. Dusting, excessive wear, and noise all appear to be a thing of the past. However, the downside to ceramic pads happens during cold weather. The first few stops of a ceramic pad-equipped vehicle show a decrease in braking efficiency. Once the pads are heated, this problem goes away.
Heat Range
2. A comparison of heat range shows both Kevlar and ceramic pads to have a higher tolerance to heat then the factory semi-metallic pads. However, while the Kevlar pad does show an improvement in resistance to brake fade brought on by heat, it does not have the resistance to extreme heat and does not recover from that heat as fast as the ceramic pads.

Ceramic pads have the edge in terms of the ability to resist and recover from heat, because of the ceramic pads' superior ability to absorb and then quickly release heat. This prevents heat buildup, and brake fade. The downside happens during cold stops. The ceramic pad shows a decrease in braking efficiency until warmed up, and the first few stops are noticeably weak in terms of stopping force.
Noise
3. Noise characteristics are where ceramics shine. Because the ceramic pad compounds contain no steel fibers, the noise generated by these pads is beyond the range of human hearing.

Kevlar pads still contain steel fibers, although far less then traditional semi-metallic pads. This results in a reduction of noise, but not the total elimination seen with the ceramic pads.
Dust
4. No brake pad is without dust. Dust is inevitably caused by wear of the pads and the rotors. Kevlar pads still have dusting problems, although those are reduced by the lower levels of steel. The ceramic pads still have dust as well but this dust is light in color, and resists sticking to parts like wheels because it isn't ferrous-metal based and there is less of it. When it comes to eliminating brake dust, the edge in performance goes to the ceramic pad.
Conclusions
5. The Kevlar-based pads are a definite step up from standard semi-metallic pads, and have an edge over ceramics as far as cold weather stopping is concerned. However, the ceramic pad has a slight edge in almost every other concern. "

NEXT
http://www.ehow.com/facts_5780750_carbo ... -pads.html



Carbon Metallic Vs. Ceramic Brake Pads
courtesy of Luis Argerich

Ceramic brake pads represent the newest advances in brake pad technology, but that doesn't necessarily mean that traditional carbon-metallic pads are completely outdated.

History
1. Carbon metallic pads began to replace traditional asbestos-based brake pads in the early 1980s. Ceramics were first used in 1994.
Compounds
2. Carbon metallics use a pad compound composed of mineral fibers, Aramid (a polymer also used in body armor), cellulose, chopped glass, and steel. Ceramic pads use ceramic powder, Aramid, and other plastics.
Noise
3. Ceramics vibrate at a higher frequency than can be detected by the human ear. This makes them far quieter in operation than squeal-prone metallics.
Brake Dust
4. Metallic pads use a compound that is both black and charged with static electricity. This means that metallics will often coat wheels with black grime, a problem that ceramic pads do not cause.
Performance
5. In general, metallics have a broad heat range for optimum performance, but can fade very quickly at high temperatures. Ceramics operate in a narrower range, but work much better at higher brake temperatures.
 
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