Hot dip galvanized S320GD
Hot dip galvanized S320GD steel is a high-strength steel. "320" indicates the minimum yield strength of 320 MPa. S320GD steel is widely recognized for its excellent formability, strength, and superior corrosion protection. It can be produced through hot rolling and cold rolling, with a hot dip galvanizing treatment applied. It is extensively utilized in fields such as the vehicle manufacturing and building industries.
Hot-dip galvanized S320GD steel is a versatile and durable material. It is dependable for building structures and serves as a durable option for exterior use.
S320GD Equivalent Grades
S320GD is equivalent to the European standard EN10346:2015 grade 1.0250.
GNEE STEEL manufactures S320GD steel in compliance with EN10346:2015 and other international standards, ensuring consistent quality, durability, and corrosion resistance
Mechanical Properties
| Parameter | Standard Requirement | Typical Value | Testing Standard |
| Yield Strength (Rp0.2) | ≥320 MPa | 340-380 MPa | ISO 6892-1 |
| Tensile Strength (Rm) | 420-540 MPa | 440-500 MPa | ISO 6892-1 |
| Elongation (A80mm) | ≥10% | 12-16% | ISO 6892-1 |
| Bendability (180°) | d=0a | No cracking | ISO 7438 |
| Hardness (HV) | – | 110-150 | ISO 6507 |
Global Standard Grade Comparison
| Property | Europe EN 10346 | China GB/T 2518 | USA ASTM A653 | Japan JIS G3302 |
| Grade | S320GD+Z | S320GD+Z | SS Grade 50 | SGHC490 |
| Yield Strength | ≥320 MPa | ≥320 MPa | ≥345 MPa | ≥490 MPa |
| Coating Symbol | +Z/+AZ/+ZM | +Z/+AZ/+ZM | Type B/G90 | Z12/Z18/Z22 |
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.
S320GD Steel Coil & Strip Coatings
| Coating Designation | Total Coating Mass (g/m², both sides) | Coating Thickness (µm per side) |
| Z100 | 100 | ~7 |
| Z140 | 140 | ~10 |
| Z200 | 200 | ~14 |
| Z275 | 275 | ~20 |
| Z350 | 350 | ~25 |
Key Considerations:
A thicker coating improves protection against corrosion, making it perfect for demanding outdoor conditions.
Lower coating weight is often chosen for indoor applications or painted surfaces, where additional protection is unnecessary.
The coating is applied uniformly during the hot dip galvanization, ensuring consistent protection across the steel surface.
Available Steel Grade
| 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 | -- |
FAQ:
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.
Q: Can S320GD steel be used for welding applications?
A: Yes, S320GD steel offers good weldability, making it suitable for various welding applications in construction and manufacturing. Its low-carbon content and specific alloying elements facilitate welding processes.
Q: What is the significance of the longitudinal and coil terms in relation to S320GD steel?
A: Longitudinal refers to the orientation of the steel grain structure, which can impact its mechanical properties. Coils denote the form in which the steel is supplied, allowing for efficient transportation and processing in manufacturing.
Q: How does the base material of S320GD steel contribute to its characteristics?
A: The base material of S320GD steel, typically a low-carbon steel, balances strength and ductility. This makes it ideal for forming and shaping processes while maintaining structural integrity.
Q: What role does manganese play in S320GD steel?
A: Manganese is an essential alloying element in S320GD steel, contributing to its strength and toughness. It also aids in the steel's ability to undergo annealing processes, improving its overall mechanical properties.
