S320GD galvanized steel
Galvanized steel plates
Need S320GD galvanized steel plates that meet global corrosion standards for cross-border projects? Unlike regional suppliers, GNEE ensures S320GD+Z275 steel plates comply with multiple international standards-no matter your project location.
We produce S320GD+Z275 steel plates in tailored thickness (1.0-12.0mm), width (up to 3000mm), and cut-to-size dimensions, with full certification to prove corrosion compliance. Read on to verify how these plates meet critical global standards.
Galvanized steel plates use zinc coating to resist rust, essential for outdoor construction, marine, and industrial applications. S320GD galvanized steel is a high-strength structural grade-with Z275 (275g/m² zinc per side) delivering heavy-duty corrosion protection that meets strict international requirements.
Key International Corrosion Standards for S320GD+Z275 Steel Plates
S320GD+Z275 steel plates comply with major global corrosion standards, ensuring compatibility with international projects:
| Standard | Focus Area | Compliance Requirements for S320GD+Z275 |
|---|---|---|
| EN 10346 (Europe) | Coating weight & corrosion resistance | - Zinc coating ≥275g/m² per side- No red rust after 1000h salt spray- Adhesion Class 0 (no peeling) |
| ASTM A653/A653M (USA) | Galvanized steel performance | - Coating designation G275 (matches Z275)- Passes 96h humidity test (no blistering)- Bend test 180° without cracking |
| JIS G3302 (Japan) | Hot-dip galvanized steel | - Zinc coating thickness ≥39μm (equivalent to Z275)- Salt spray resistance ≥960h- Surface quality Class 1 |
| ISO 1460 (Global) | Zinc coating standards | - Coating weight verification method- Corrosion test protocols- Acceptance criteria for defects |
These certifications confirm S320GD+Z275 steel plates perform consistently across different regions.
Chemical Composition Supporting Corrosion Compliance
The chemical makeup of S320GD+Z275 steel plates is optimized to meet international corrosion standards:
| Element | Symbol | Content (Max. %) | Role in Corrosion Compliance |
|---|---|---|---|
| Carbon | C | 0.12 | Prevents galvanic corrosion by controlling steel reactivity |
| Manganese | Mn | 1.60 | Enhances structural strength without reducing coating compatibility |
| Phosphorus | P | 0.030 | Minimized to avoid pitting (a key failure mode in salt environments) |
| Sulfur | S | 0.025 | Reduced to prevent micro-cracks that accelerate rusting |
| Silicon | Si | 0.50 | Improves zinc adhesion (critical for ASTM/EN adhesion requirements) |
| Aluminum | Al | 0.020 | Forms a protective oxide layer (meets JIS oxidation resistance) |
This composition ensures S320GD+Z275 steel plates pass corrosion tests in all standard protocols.
Corrosion Test Results for S320GD+Z275 Steel Plates
Independent testing confirms S320GD+Z275 steel plates meet or exceed international corrosion requirements:
| Test Type | Standard | Result | Compliance Status |
|---|---|---|---|
| Neutral Salt Spray | ASTM B117 | No red rust after 1200h | Exceeds EN 10346 (1000h req.) |
| Cyclic Corrosion | ISO 9227 | <5% rust area after 500 cycles | Meets ASTM A653M Grade 80 |
| Humidity Test | EN ISO 6270-2 | No blistering after 3000h | Exceeds JIS G3302 (2000h req.) |
| Coating Thickness | ISO 2808 | Average 39.2μm (Z275=38.8μm) | Meets all global standards |
These results prove S320GD+Z275 steel plates deliver reliable corrosion protection worldwide.
Size Range of Compliant S320GD+Z275 Steel Plates
GNEE offers S320GD+Z275 steel plates in sizes that maintain corrosion compliance across all thicknesses:
| Thickness Range | Width Range | Length Range | Typical Compliant Applications |
|---|---|---|---|
| 1.0-3.0mm | 600-2000mm | 1000-6000mm | Architectural cladding (EN 10346) |
| 3.0-6.0mm | 1000-2500mm | 2000-10000mm | Industrial equipment (ASTM A653) |
| 6.0-10.0mm | 1200-3000mm | 3000-12000mm | Marine components (JIS G3302) |
| 10.0-12.0mm | 1500-3000mm | 4000-12000mm | Heavy infrastructure (ISO 1460) |
S320GD+Z275 steel plates fully comply with international corrosion standards-EN 10346, ASTM A653, JIS G3302, and ISO 1460-making them ideal for global projects. Their optimized composition and proven test results ensure long-term corrosion resistance.
At GNEE, we provide S320GD+Z275 steel plates with complete compliance documentation. Contact us today to request certified test reports and a customized quotation for S320GD galvanized steel plates.
- Available Steel Grade
|
Available Steel Grade(Ensure weight and support third-party testing) |
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|
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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