The Differences Between Hard-Anodized & Porcelain Enamel

Walk in to any kitchen supply store, and the shine from all the glistening pots and pans may make you reach for your sunglasses. Your senses are immediately assaulted: all the cookware claims to be the newest and best thing to hit the market.

No-stick, non-stick, stick-resistant, a little stick — who can you believe, and how can you determine what shiny or brightly colored saucepan is the right one for you? Two terms jousting for the title of “best cookware” are hard anodized and hard enamel cookware made of porcelain. Distinguishing between the two isn’t difficult if you know how to wend your way through the language of surfaces on pots and pans.

Building a Better Model

Realizing the weaknesses in aluminum cookware, but aiming to maintain the high conductivity of the element, scientists at Calphalon created hard-anodized aluminum cookware in the 1960s. Through an electro-chemical process, they fused the aluminum in an acid bath jolted with an electrical current, resulting in an oxide blend that had greater resistance than the original aluminum. The process also created a lovely gray coloring, and the scientists noticed that food was less apt to stick than with the original aluminum.

Porcelain Hard Enamel Cookware

Porcelain, a combination of kaolin clay and glass fired at extremely high temperatures, was first fired onto iron in the 1800s, creating a pot lining that eliminated the leaching of iron into food. Through the years, aluminum and stainless steel have also been fused with porcelain, making a hard porcelain enamel product that adds to the myriad of cookware choices.

Benefits of Hard-Anodized Cookware

Touch a hard-anodized pot to realize its strength. The smooth cooking surface is stick-resistant, and its solid surface won’t corrode, leach or suffer abrasions. If satellites in the sky can depend on the strength of hard-anodized parts to protect them from the rigors of space, then a mere saucepan is sure to have a long life. Hard-anodized cookware also has excellent heat conduction and cleans safely.

Hard-anodized saucepans are safe at high temperatures, making them ideal for stovetop-to-oven cooking. Just be sure to use potholders when removing the cookware from the oven.

Porcelain Enamel Pros

The high-temperature firing of porcelain onto iron has driven the cookware market for over a century. The process was then expanded to include stainless steel and aluminum. The porcelain isn’t a coating over a base metal, but a fusion of the two. The rock-hard surface is resistant to scratching and peeling. While aluminum and stainless steel porcelain enamels are lighter second cousins to cast iron in the realm of cookware, it’s the heft of the iron that gives porcelain enamel its edge with serious cooks. Aluminum porcelain enamel doesn’t leach, making it a safer choice than unfused aluminum.

Disadvantages of Porcelain Enamel Cookware

Disadvantages of porcelain enamel cookware include the enamel color turning darker with heavy use. This, however, does not affect the cooking qualities of the pot; instead, it simply indicates years of use.

A Sticky Subject

Hard anodization of aluminum not only creates a smooth surface; the result of the fusion process is that the base aluminum becomes non-porous. Food adheres when first put into the pan, but as it nears doneness, it’s released from its bond. Hard-anodized cookware is stick-resistant.

Porcelain enamel over iron, aluminum or stainless steel is non-stick. Bits may be left behind, especially during high-heat cooking, but they scrape off with little effort. A good soak in warm water rinses away any residue without effort.

Safe Cooking Considerations

Both hard-anodized aluminum cookware and porcelain-fused enamel are considered safe. The biggest concern is leaching from the base metal to the food, and if chips in the porcelain are avoided, they are not dangerous. The FDA’s Center for Food Safety and Applied Nutrition has deemed enamel-coated cookware safe, including products that are imported.

A Beauty Contest

Hard-anodized aluminum cookware is one color: gray. That’s the result of the oxidation that takes place during the chemical fusion process. Porcelain enamel over a base metal are manufactured in a riot of colors, which makes them ideal additions to well-decorated kitchens. Many cooks tend to collect porcelain enamel cookware in one color and display them as accessories instead of hiding them in cupboards.

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International standard chromium oxide green

Green chrome oxide and other pigmented oxides for a variety of applications including porcelain enamel, refractory, and more.

Applications:
1.Used in the dyeing agent of porcelain enamel and ceramic, leatheroid, structure material and fireproof material;
2.The chrome smelt and chromium carbide;
3.polishing material.;
4.catalyst, paint,ink.

How to clean porcelain enamel

It is best to clean porcelain enamel cookware right away as the surface can crack and chip if food residues are left to dry inside the pot or pan.

Avoid using steel wool scrubbers or other abrasive cleaning items on porcelain enamel. Some porcelain enamel cookware is dishwasher safe, just be sure to check first and to wipe out food residues before putting porcelain enamel in the dishwasher.

As porcelain enamel is part metal, it is typically not microwave safe. It may be useable on induction cooktops, though, so is a great option if you’re looking for cookware options in an energy efficient kitchen.

All in all, I’d say porcelain enamel is a decent option for eco-friendly cookware, but you’re much better off with ceramic, cast iron, carbon steel, stainless steel, or metal-ceramic, rather than porcelain enamel.

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Porcelain Enamel Coatings

Porcelain enamel coatings have their origins in ancient times when they were mainly used for decorative and ornamental purposes. From the industrial revolution onwards, these coatings have started to be used also as functional layers, ranging from home applications up to the use in high-technological fields, such as in chemical reactors.

The excellent properties of porcelain enamel coatings, such as fire resistance, protection of the substrate from corrosion, resistance to atmospheric and chemical degradation, mainly depend and originate from the glassy nature of the porcelain enamel matrix itself. On the other side, the vitreous nature of porcelain enamel coatings limits their application in many fields, where mechanical stress and heavy abrasion phenomena could lead to nucleation and propagation of cracks inside the material, thus negatively affecting the protective properties of this coating. Many efforts have been made to improve the abrasion resistance of enamelled materials.

On this regard, researchers showed encouraging results and proposed many different improvement approaches. Now it is possible to obtain porcelain enamels with enhanced resistance to abrasion. Differently, the investigation of the mechanical properties of porcelain enamel coatings remains a poorly studied topic. In the literature, there are interesting methodological ideas, which could be successfully applied to the mechanical study of enamelled materials and could allow to have further insights on their behaviour. Thus, the path that should be followed in the future includes the mechanical characterization of these coatings and the search for new solutions to address their brittle behaviour.

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Advances in Porcelain Enamel Technology

Porcelain is made from baked clay

Porcelain itself is a ceramic material made from a type of white clay called kaolin, plus feldspars, quartz, steatite, and other rocks. To make regular porcelain, the whole mixture is baked at 1300-1400 degrees. Porcelain enamel is made when the porcelain is melted together with a stronger metal. This makes porcelain enamel cookware both light and strong, with low porosity, so it is naturally non-stick.

Pay attention to porcelain coatings

Oddly enough, though, some companies seem to want to coat their porcelain enamel cookware with chemical non-stick coatings or to use potentially toxic heavy metals and other compounds in glazes and in the enamel mixture. It pays to be picky about porcelain enamel cookware and to ask questions of manufacturers if it’s not clear what they use in their pots and pans.

Unlike somewhat terrifying porcelain dolls that could be extras in a Stephen King movie adaptation, porcelain enamel cookware is a fun addition to the kitchen. That’s because it is available in a variety of colors and does not fade or peel when used according to instructions. My advice, though, would be to avoid porcelain enamel in reddish tones and to favor those that are blue, given that some Le Creuset models with a red tone have tested positive for lead and cadmium. The Signature Enameled Cast Iron Braiser (in a blue shade like Marseille or Marine) from Le Creuset is a good option for one-pot meals (View on Amazon).

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NonStick Cookware Alternatives – Porcelain Enamel Cookware

What is Porcelain Enamel Cookware?

Porcelain enamel is made by heating a powdered glass formulation known as a frit to a very high temperature (at least 1380 degrees Fahrenheit). At this point, the frit liquefies and flows over the substrate (usually steel, cast iron or aluminum) and forms a very hard, durable finish. (Learn more about porcelain enamel.)

Is Porcelain Enamel Cookware Safe?

20200115At one time, porcelain enamel cookware was known to contain unsafe levels of lead and cadmium. Fortunately, modern manufacturing has now reduced these elements to amounts well below that permitted by the United States Food and Drug Administration. To be safe, consumers should only purchase high-quality products made by reputable firms. Avoid off-brands and cheap products not approved for sale in the United States.

Porcelain enamel cookware combines beauty, safety, and performance. Like ceramic cookware, enamelware is nonstick and does not have the potential toxicity issues of Teflon. Not surprisingly, porcelain enamel cookware has become very popular.

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5 Benefits of Porcelain Enamel Cookware

1. Light Weight Pans

Porcelain enamel cookware is sturdy enough for a professional kitchen, yet light enough for everyday use. A 12 inch porcelain enamel skillet can weigh just 2.1 lbs, as compared to a 12 inch non-stick skillet that weight over 5 lbs.

2. Can Go in the Oven

Unlike most non-stick cookware that can only be used on the stove top up to the medium heat setting, Porcelain Enamel Cookware can be used on the stove top or in the oven up to 350° Fahrenheit. This allows you to use one pan for the entire cooking process, especially if the dish requires starting on the stove top and finishing in the oven, such as browning meat or chicken to sear the outside, then putting in the oven to cook the inside.

3. Stay Cool Handles

One of the biggest issues with porcelain enamel cookware that goes in the oven is that the handles can get too hot to touch. The unique rubberized stay cool handles prevent burns when removing from the oven or stove top.

4. Comes in Several Exciting Colors

While many non-stick skillets and pans come in just black, grey, or silver, the Porcelain Enamel II Cookware Set, for example, comes in several exciting two-tone gradient colors, including: Blue, Red, Orange, Fennel, Green and Purple, to match your kitchen, favorite color or even your personality.

5. Scratch Resistant Outer Shell

Due to the baked on enamel external coating, porcelain enamel non-stick cookware is scratch resistant, and can hold up in even the most demanding kitchens.

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About Porcelain Enamel

What is porcelain enamel?

Porcelain enamel on steel is a glass-like, non-porous material made up of silica, borax, soda, and various metal oxides that are fused to steel sheets.

How is it affected by the elements?

Porcelain enamel on steel used for exterior surfaces is unaffected by sun, rain, snow, dust, or industrial atmospheres. The hard impervious surface defied the worst of weather conditions and will last the life of the building.

What is the durability of color?

The color is permanent and will not oxidize, fade, peel, or blister. Shades of red, orange, and yellow, usually the most fugitive in the color spectrum, are unaffected by the sun.

What are the size limitations?

Our porcelain enamel on steel products are generally produced in lengths of up to ten feet and widths of up to four and one-half feet (twenty square feet recommended) with edge flanges for stiffness and concealed fasteners.

What are the maintainance requirements?

Porcelain enamel on steel is maintenance-free and does not need refinishing or repainting.

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What Is Porcelain Enamel Cookware?

Porcelain enamel cookware refers to pots and pans made of metal that’s coated with a form of glass called porcelain enamel, which is bonded to the iron, steel, stainless steel or aluminum metal to form the body of the cookware. Porcelain enamel cookware from a host of manufacturers offers a huge variety of solid colors and designs on an easy-to-clean surface.

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Quality Differences

Porcelain enamel provides a hard, lustrous finish that won’t scratch, corrode, fade or peel with normal use. However, it may chip or crack if the utensil is dropped on a hard surface. Most porcelain enamel cookware has an outside enamel coating, with teflon or plain metal on the inside. It comes in a wide range of prices. Price differences are based on metal thickness, number of porcelain enamel coats, color and design, and accessories such as covers and high-temperature plastics for handles. Better grades of porcelain enamel cookware have seamless coatings.

Enamelware

Enamelware is a variety of porcelain enamel cookware that’s distinguished by having a porcelain enamel coating on the inside as well as the outside. Enamelware has a base of steel, stainless steel or cast iron. The porcelain coating is applied after the utensil is formed to create a smooth, non-porous surface inside and out. Enamelware isn’t affected by heat, humidity or food acids and can be used to cook, bake or roast foods, or as a serving or storage utensil. Cheap enamelware can scratch or chip easily; high-quality ware has a thicker enamel coating that resists scratches and chips.

Cookware Cautions

Porcelain enamel cookware is very strong and durable, with excellent heat-transfer characteristics. It doesn’t react with acidic foods like tomatoes, and you can use any type of metal or plastic cooking utensils. But there are some things you shouldn’t do with this cookware. For instance, you shouldn’t use it over high heat for extended time periods. Extreme high temperatures can melt the porcelain enamel coating. And you shouldn’t allow porcelain enamel cookware to boil dry, especially on a glass or ceramic cooktop. This can crack the finish.

Cleaning Porcelain Enamel

Porcelain enamel is quick and easy to clean. This cookware is stick-resistant, and resists staining and scratching. Clean your cookware while it’s still warm; don’t let it sit around until food residue dries and hardens. Use a dish sponge or a plastic or nylon dish scrubber. Don’t use steel wool soap pads or abrasive household cleaners as these can scratch the finish over time. Alternatively, you can put porcelain enamel cookware in a dishwasher after wiping out any food residue.

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The Porcelain Enamel

Porcelain enamel is a mixture of mineral content glass and inorganic pigments fused to a steel substrate at temperatures exceeding 1400 degrees Fahrenheit. This extreme temperature literally melts and fuses the pigments to the steel, forming a molecular bond and creating a permanent coating.

Graphics are applied with glass-based inks by a variety of methods including traditional screen printing, stenciling and a high resolution photographic process. Each color is applied and fired one layer at a time. This process produces the most visually striking and durable signage material available.

Common Applications

Interpretive and wayfinding signage for national,

state, and local parks, zoos, aquariums and municipalities.

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