| Everything You Always Wanted to Know About Steel. . . But Were Afraid to Ask Copyright Michelle Applebaum Research, Inc 2003-2006 All rights reserved. June 2006 |
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
G
GALFAN 1
A galvanized product coated with 95% free zinc, 5% aluminum and traces of mish metal in the
coating; provides extra corrosion protection with lighter coating weight; has improved formability
over regular free zinc coatings (hot dipped galvanized regular products).
****
GALVANEAL COATING 1
Coatings on hot-dipped galvanized steels processed to convert the coating completely to zinc-
iron alloys; dull gray in appearance, have no spangle, and after proper preparation, are well
suited for painting.
****
GALVANIZE COATINGS 1
Free zinc coatings applied to a hot-rolled or cold-rolled steel to produce Galvanized steel. The
coating can be applied by the hot-dip or electrodeposition process.
****
GALVANIZED STEEL
Steel coated with a thin layer of zinc to provide corrosion resistance in underbody auto parts,
garbage cans, storage tanks, or fencing wire. Sheet steel normally must be cold-rolled prior to
the galvanizing stage.
Hot-Dipped
Steel is run through a molten zinc coating bath, followed by an air stream “wipe” that controls the
thickness of the zinc finish.
Electrogalvanized
Zinc plating process whereby the molecules on the positively charged zinc anode attach to the
negatively charged sheet steel. The thickness of the zinc coating is readily controlled. By
increasing the electric charge or slowing the speed of the steel through the plating area, the
coating will thicken.
Differences
Electrogalvanizing equipment is more expensive to build and to operate than hot dipped, but it
gives the steelmaker more precise control over the weight of the zinc coating. The automotive
manufacturers, because they need the superior welding, forming, and painting ability of
electrogalvanized steel, purchase 90% of all tonnage produced.
****
GALVALUME®
Steel sheet with a unique coating of 55% aluminum and 45% zinc that resists corrosion. The
coating is applied in a continuous hot-dipped process, which improves the steel’s weather
resistance. Galvalume® is a trademark of BHP Steel, and the product is popular in the metal
building market.
****
GALVANNEALED 1
An extra tight coat of galvanizing metal (zinc) applied to a soft steel sheet, after which the sheet
is passed through an oven at about 1200 degrees F. The resulting coat is dull gray without
spangle especially suited for subsequent painting.
****
GAUGE
The thickness of sheet steel. Better-quality steel has a consistent gauge to prevent weak spots
or deformation.
****
GIGAJOULE 2
A measure of energy. A GigaJoule equals 1,000,000,000 Joules. A 100-watt light bulb turned
on for one second consumes 100 Joules.
****
GRINDING 3
Involves grinding the top and/or bottom of carbon or alloy steel plate or bars into close tolerance.
****
GREENFIELD FACILITY
New metalmaking complex that is built “from scratch,” presumably on a green field.
****
Source: Weirton Steel Glossary
Source: Dofasco Glossary of Terms
Source: Reliance Steel 10-K
Source: BlueScope Steel Glossary of Terms
Source: Allegheny Technologies 10-K
Source: Alcoa 10-K
Source: Alcan 10-K
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
G
GALFAN 1
A galvanized product coated with 95% free zinc, 5% aluminum and traces of mish metal in the
coating; provides extra corrosion protection with lighter coating weight; has improved formability
over regular free zinc coatings (hot dipped galvanized regular products).
****
GALVANEAL COATING 1
Coatings on hot-dipped galvanized steels processed to convert the coating completely to zinc-
iron alloys; dull gray in appearance, have no spangle, and after proper preparation, are well
suited for painting.
****
GALVANIZE COATINGS 1
Free zinc coatings applied to a hot-rolled or cold-rolled steel to produce Galvanized steel. The
coating can be applied by the hot-dip or electrodeposition process.
****
GALVANIZED STEEL
Steel coated with a thin layer of zinc to provide corrosion resistance in underbody auto parts,
garbage cans, storage tanks, or fencing wire. Sheet steel normally must be cold-rolled prior to
the galvanizing stage.
Hot-Dipped
Steel is run through a molten zinc coating bath, followed by an air stream “wipe” that controls the
thickness of the zinc finish.
Electrogalvanized
Zinc plating process whereby the molecules on the positively charged zinc anode attach to the
negatively charged sheet steel. The thickness of the zinc coating is readily controlled. By
increasing the electric charge or slowing the speed of the steel through the plating area, the
coating will thicken.
Differences
Electrogalvanizing equipment is more expensive to build and to operate than hot dipped, but it
gives the steelmaker more precise control over the weight of the zinc coating. The automotive
manufacturers, because they need the superior welding, forming, and painting ability of
electrogalvanized steel, purchase 90% of all tonnage produced.
****
GALVALUME®
Steel sheet with a unique coating of 55% aluminum and 45% zinc that resists corrosion. The
coating is applied in a continuous hot-dipped process, which improves the steel’s weather
resistance. Galvalume® is a trademark of BHP Steel, and the product is popular in the metal
building market.
****
GALVANNEALED 1
An extra tight coat of galvanizing metal (zinc) applied to a soft steel sheet, after which the sheet
is passed through an oven at about 1200 degrees F. The resulting coat is dull gray without
spangle especially suited for subsequent painting.
****
GAUGE
The thickness of sheet steel. Better-quality steel has a consistent gauge to prevent weak spots
or deformation.
****
GIGAJOULE 2
A measure of energy. A GigaJoule equals 1,000,000,000 Joules. A 100-watt light bulb turned
on for one second consumes 100 Joules.
****
GRINDING 3
Involves grinding the top and/or bottom of carbon or alloy steel plate or bars into close tolerance.
****
GREENFIELD FACILITY
New metalmaking complex that is built “from scratch,” presumably on a green field.
****
Source: Weirton Steel Glossary
Source: Dofasco Glossary of Terms
Source: Reliance Steel 10-K
Source: BlueScope Steel Glossary of Terms
Source: Allegheny Technologies 10-K
Source: Alcoa 10-K
Source: Alcan 10-K
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
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