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Galvanizing body of Dodge Caravan 3rd gen

The table below shows whether body of Caravan 3rd generation, made from 1995 to 2001,
is galvanized and the quality of processing.   Print

Year
ProcessingTypeMethodCar body condition
1995Nodal pointsCold Galvanizing• application of layer oxides containing zinc particles
• use of branded TWIP steels
• since 1995 the paint coating updated
Result of processing: Bad
Car's 26 years old.

Considering the car's age and quality of the zinc processing, under normal operating conditions body corrosion spreads in initial stage.

On such cars, measures could be applied to eliminate noticeable rusting in bends and joints of body.
1996Nodal pointsCold Galvanizing• application of layer oxides containing zinc particles
• use of branded TWIP steels
Result of processing: Bad
Car's 25 years old.

Considering the car's age and quality of the zinc processing, under normal operating conditions body corrosion spreads in initial stage.

On such cars, measures could be applied to eliminate noticeable rusting in bends and joints of body.
1997Nodal pointsCold Galvanizing• application of layer oxides containing zinc particles
• introduction of branded TWIP steels
Result of processing: Bad
Car's 24 years old.

Considering the car's age and quality of the zinc processing, under normal operating conditions body corrosion spreads in initial stage.

On such cars, measures could be applied to eliminate noticeable rusting in bends and joints of body.
1998PartialCold Galvanizing• application of layer oxides containing zinc particles
• use of branded TWIP steels
Result of processing: Bad
Car's 23 years old.

Considering the car's age and quality of the zinc processing, under normal operating conditions body corrosion spreads in initial stage.

On such cars, measures could be applied to eliminate noticeable rusting in bends and joints of body.
1999PartialCold Galvanizing• application of layer oxides containing zinc particles
• use of branded TWIP steels
Result of processing: Bad
Car's 22 years old.

Considering the car's age and quality of the zinc processing, under normal operating conditions body corrosion spreads in initial stage.

On such cars, measures could be applied to eliminate noticeable rusting in bends and joints of body.
2000PartialCold Galvanizing• application of layer oxides containing zinc particles
• use of branded TWIP steels
Result of processing: Bad
Car's 21 years old.

Considering the car's age and quality of the zinc processing, under normal operating conditions body corrosion spreads in initial stage.

On such cars, measures could be applied to eliminate noticeable rusting in bends and joints of body.
2001PartialCold Galvanizing• application of layer oxides containing zinc particles
• use of branded TWIP steels
Result of processing: Bad
Car's 20 years old.

Considering the car's age and quality of the zinc processing, under normal operating conditions body corrosion spreads in initial stage.

On such cars rusting is already noticeable in hidden cavities and joints.
The information in table is collected from open sources and may contain errors.
About sources

Other generations of Dodge Caravan

2 1990–1995

3 1995–2001

4 2001–2007

5 2007–2014

5 2015–2021

all Models Dodge

Types of Processing

If the galvanized car body is damaged, corrosion destroys the zinc, not the steel.

•  Full-body — the car body is fully processed, including hidden and hard-to-reach cavities.

•  Partial — all nodal points and most vulnerable parts of the car body, thresholds, bottom, bottom of the doors are processed.

•  Nodal points processing — includes only processing of welding places, fasteners, stamping and other small parts.

Over years the processing is changed. The younger car the better it's galvanized!

Galvanizing methods

•  Hot-dip Galvanizing — best method (high corrosion resistance, resistance to mechanical influences, partial regeneration).

•  Electroplating — good method (less corrosion resistance that matches perfectly with the paint and primer).

•  Zincrometal — acceptable method (metal with an elastic coating on a zinc base, low anti-corrosion properties, low resistance to mechanical influences).

•  Cold Galvanizing — bad method (anaphoretic soil with an admixture of zinc is not able to resist corrosion).

The presence of zinc particles in ground covering the car body does not affect it's protection and is used by the manufacturer for word "Zinc Coated" in advertising.

Testing

Test results of cars that came off the conveyor with the same damage (cross) on the bottom of front right door are presented below. The tests were carried out in laboratory. Conditions in a chamber with hot salt fog for 40 days correspond to 5 years of normal operation.

Car with Hot-dip Galvanizing
(zinc layer 12 - 15 microns)

Car with Electroplating coated
(zinc layer 5 - 10 microns)

Car with Cold Galvanizing
(zinc layer 10 microns)

Car with Zincrometal

Car without galvanizing

Important information

•  Over the years manufacturers have improved the galvanizing technology of their cars. The younger the car the better it is galvanized!

•  A coating with a thickness of 2 to 10 microns (micrometers) provides excellent protection against the occurrence and spread of corrosion damage.

•  The destruction rate of the active zinc layer in the place of damage to the car body is from 1 to 6 microns per year. Zinc is more actively destroyed at elevated temperatures.

•  If the manufacturer does not add "full-body" to the term "galvanizing", it means that only impact-prone elements have been processed.

•  Pay more attention to the presence of a manufacturer's warranty on the car body than loud phrases about galvanizing from advertising.

Other info

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