galvanized steel
Galvanized steel sheet
Unsure whether to choose S320GD galvanized steel with Z160 coating or lower coating weights for your project? Unlike one-size-fits-all suppliers, GNEE offers flexible coating customization to match your exact durability needs.
We provide S320GD galvanized steel in full coating weight ranges (Z60-Z275), with tailored thickness (0.1-100mm) and width (up to 3000mm) options. Our team helps you balance performance and cost by recommending the right coating grade.
Read on to compare S320GD+Z160 galvanized steel with lower coating grades, and learn which fits your application best.
Galvanized steel is carbon steel with a zinc coating that prevents rust, used in construction, automotive, and outdoor infrastructure.
The coating weight (marked by "Z" + grams per square meter) directly impacts corrosion resistance. S320GD galvanized steel is a high-strength, formable grade-with Z160 (160g/m² zinc per side) representing a mid-to-high coating weight for demanding environments.
Coating Weight Comparison: S320GD+Z160 vs. Lower Grades
The coating weight of S320GD galvanized steel determines its service life and corrosion protection. The table below compares key parameters:
| Coating Grade | Zinc Weight (per side) | Coating Thickness | Typical Service Life | Ideal Environments |
|---|---|---|---|---|
| S320GD+Z160 | 160g/m² | ~22μm | 15-25 years | Suburban, light industrial, coastal (mild) |
| S320GD+Z120 | 120g/m² | ~17μm | 10-20 years | Rural, indoor industrial |
| S320GD+Z90 | 90g/m² | ~13μm | 8-15 years | Indoor, dry environments |
| S320GD+Z60 | 60g/m² | ~8μm | 5-10 years | Temporary structures, indoor storage |
S320GD+Z160 galvanized steel delivers 30-50% longer service life than Z60/Z90 grades, making it cost-effective for long-term projects.
Mechanical Properties Across S320GD Coating Grades
While coating weight varies, the core mechanical properties of S320GD galvanized steel remain consistent-ensuring performance across all grades:
| Property | S320GD+Z160 | S320GD+Z120 | S320GD+Z90 | S320GD+Z60 | Standard |
|---|---|---|---|---|---|
| Yield Strength (Min.) | 320 MPa | 320 MPa | 320 MPa | 320 MPa | EN 10346 |
| Tensile Strength | 400-510 MPa | 400-510 MPa | 400-510 MPa | 400-510 MPa | EN 10346 |
| Elongation (Min.) | 22% | 22% | 22% | 22% | EN 10346 |
| Bend Test | 180° (d=2t) | 180° (d=2t) | 180° (d=2t) | 180° (d=2t) | EN 10346 |
| Coating Adhesion | Grade 0 | Grade 0 | Grade 0 | Grade 0 | ISO 2819 |
This consistency means you can switch between coating grades of S320GD galvanized steel without adjusting forming or welding processes.
Corrosion Performance Testing Results
Independent testing confirms the superior corrosion resistance of S320GD+Z160 galvanized steel compared to lower grades:
| Test Method | S320GD+Z160 | S320GD+Z120 | S320GD+Z90 | S320GD+Z60 |
|---|---|---|---|---|
| Neutral Salt Spray (ASTM B117) | >1000 hours (no red rust) | >800 hours | >600 hours | >400 hours |
| Cyclic Corrosion (ISO 9227) | >500 cycles | >400 cycles | >300 cycles | >200 cycles |
| Humidity Test (EN ISO 6270) | >3000 hours | >2500 hours | >2000 hours | >1500 hours |
S320GD+Z160 galvanized steel maintains its protective coating 25-50% longer than lower grades in aggressive environments.
Size Availability for S320GD Coating Grades
GNEE offers all coating grades of S320GD galvanized steel in consistent size ranges:
| Product Form | Thickness Range | Width Range | Length Range |
|---|---|---|---|
| Coils | 0.1-10.0mm | 600-3000mm | 500-3000m |
| Sheets | 0.3-10.0mm | 600-2000mm | 1000-12000mm |
| Cut-to-Size | 0.5-8.0mm | Custom | Custom |
This flexibility allows you to standardize on S320GD galvanized steel while adjusting coating weight for different project requirements.
S320GD galvanized steel in Z160 coating offers the optimal balance of corrosion protection, service life, and cost compared to lower coating grades.
It outperforms Z60-Z120 grades in harsh environments while maintaining the same mechanical properties and processability.
At GNEE, we help you select the right S320GD galvanized steel coating grade for your application. Contact us today to request a personalized coating selection guide and a customized S320GD galvanized steel quotation.
- 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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