Hot-dip Galvanized Steel
S320GD Galvanized Steel Coil is a high-strength, hot-rolled steel with a hot-dip galvanized coating. It is primarily composed of carbon, manganese, silicon, and trace amounts of phosphorous and sulfur, providing excellent machinability and formability. With a yield strength of 320 MPa and a tensile strength ranging from 400 to 500 MPa, S320GD is well-suited for medium-load applications.
The galvanized layer of the steel coil is typically formed through the hot-dip galvanizing process. Its thickness depends on the specific application-thicker and higher-quality coatings offer better corrosion resistance. This coating significantly improves the steel coil's durability, especially in environments with high humidity or chemical exposure, making it ideal for industries like marine, chemical, and construction. In some cases, an aluminum-zinc alloy coating may be used for enhanced corrosion protection.
Quality
| Quality | Standard | Material No. | Available coatings |
|---|---|---|---|
| S320GD | DIN EN 10346 | 1.0250 | +Z, +ZF, +ZA, +ZM, +AZ, +AS |
Mechanical Properties
| Testing direction | Yield strengthRP02 (MPa) |
Tensil Strength Rm (MPa) |
Elongation A80 (in %) |
|---|---|---|---|
| L | ≥ 320 | ≥ 390 | ≥ 17 |
Chemical properties
| C % |
Si % |
Mn % |
P % |
S % |
|---|---|---|---|---|
| ≤ 0,20 | ≤ 0,60 | ≤ 1,70 | ≤ 0,10 | ≤ 0,045 |
S320GD Galvanized Steel Applications
GNEE STEEL supplies S320GD steel in coils and strips, ensuring reliable quality tailored to diverse industry needs. It combination of durability, strength, and cost efficiency.
Construction and Infrastructure: Roofing panels, wall cladding, structural frameworks, bridges, guardrails, and support beams.
Automotive Industry: Body panels, chassis components, reinforcements, crash-resistant structures.
Manufacturing and Engineering: Metal enclosures, HVAC ducts, electrical cabinets, storage systems, and machinery parts.
Agricultural Equipment: Silos, fencing, farm machinery, outdoor storage facilities.
Energy and Utilities: Power transmission towers, solar panel supports, wind turbine components, industrial pipelines, and water tanks.
Available Steel Grade
|
(Ensure weight and support third-party testing) |
||||
|
Steel grade |
Coating |
Yield(MPA) |
Tensile(MPA) |
Elongation(%) |
|
DX51D |
Z,ZF |
-- |
270-500 |
20 |
|
DX52D |
Z,ZF |
140-300 |
270-420 |
22 |
|
DX53D |
Z,ZF |
140-260 |
270-380 |
26 |
|
DX54D |
Z,ZF |
140-220 |
270-350 |
30 |
|
S220GD |
Z,ZF |
220 |
300 |
18 |
|
S250GD |
Z,ZF |
250 |
330 |
17 |
|
S280GD |
Z,ZF |
280 |
360 |
16 |
|
S320GD |
Z,ZF |
320 |
390 |
15 |
|
S350GD |
Z,ZF |
350 |
420 |
14 |
|
S400GD |
Z,ZF |
400 |
470 |
-- |
|
S450GD |
Z,ZF |
450 |
530 |
-- |
|
S500GD |
Z,ZF |
500 |
560 |
-- |
|
Select type Galvanized Steel based on requirements |
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Frequently Asked Questions (FAQ)
Q: What is the S320GD grade in structural steels?
A: The S320GD grade refers to a type of coated structural steel with a yield strength of at least 320 MPa, commonly used for its good strength and formability. It is often utilized in a range of industries, including construction and manufacturing.
Q: How is S320GD steel typically coated?
A: S320GD steel is commonly coated through a continuous hot-dip process, using materials like zinc or a zinc-iron alloy (ZF) for corrosion protection. This coating enhances the steel's durability in harsh environments.
Q: What are the common applications of S320GD steel?
A: S320GD steel is widely used in constructing roofs, enclosures, and other structural components due to its good weldability, strength, and corrosion resistance. Its high-quality finish makes it suitable for both visible and structural applications.
Q: What are the dimensional specifications for S320GD steel coils?
A: S320GD steel coils are available in various thicknesses, typically ranging from 0.35 mm to 0.50 mm. These coils are produced to meet specific industry standards and dimensional requirements.
Q: How does the zinc coating on S320GD steel improve its properties?
A: The zinc coating on S320GD steel provides better corrosion resistance, significantly enhancing the steel's longevity and performance in harsh environments. This is crucial for maintaining the integrity of structures exposed to the elements.
Q: What standards govern the production of S320GD steel?
A: The production of S320GD steel is regulated by standards such as EN 10147, which specify the chemical composition, mechanical properties, and coating requirements to ensure consistent quality and performance.
