G550 galvanized steel is the hot-dipped galvanized steel grade in ASTM A653, known as Grade 550(80) Class 2, and is a galvanized steel coil with a minimum yield strength of 550 MPa, similar to the properties of DX54D+Z275 in the European Standard EN 10346. It is also one of the popular ultra-high strength lightweight solutions offered by Wanzhi Group.
G550 Galvanized Steel for Sale
G550 Galvanized Steel is one of our popular galvanized steel grades, where G: stands for “galvanized steel”, 550: refers to the yield strength of the steel matrix (≥550 MPa). In addition to G550, we also produce a variety of grades of galvanized steel, such as, DX51D-DX54D, S220GD -S550GD,ect.
Galvanized Steel Specifications
| Material | SGCC,S350GD+Z,S550GD+Z,DX51D,DX52D,DX53D, etc |
|---|---|
| Thickness | 0.12mm-6mm |
| Width | The conventional width below 0.5mm is 1000mm, 1200mm, and above is 1000, 1250mm |
| coil weight | 8-10 tons /customized |
| Tolerance | "+/-0.02 mm |
| Substrate Type | Hot rolled coil, Cold rolled coil |
| Surface structure | Zero spangles, Small spangles, Regular spangles, Big spangles |
| Zinc layer thickness | 30g/㎡-275g/㎡ (Z275/G90) |
| Standard | AISI, ASTM, BS, GB, JIS |
| Implementation standards | GB/T2518 GB/T25052, EN10346, JIS G3302, ASTMA653 |
| Certificates | SGS, ISO 9001,CE |
G550 Steel Properties
| Specification | G550 Galvanized Steel |
| Yield Strength | ≥550 MPa |
| Tensile Strength | 600~720 MPa |
| Elongation (A50mm) | ≥5% |
Molding Process
| Process | Parameter Requirements |
| Roll Forming | Minimum bending radius ≥ 4t (t = plate thickness) |
| Stamping | Stamping speed ≤ 30 times/minute |
| Welding | Current density ≤ 15 A/mm² |
G550 Galvanized Steel Benefits and Application
G550 galvanized steel sheet has multiple advantages of “high strength + corrosion resistance + light weight”, and has become a popular material for light weight in the field of construction, industry and new energy.
Benefits
- Mechanical properties: 550MPa yield strength → strong load-bearing, 30% structural thinning
- Durability: Z30-Z275 plating → long life, guaranteed for 20 years + service life
- Economy: full-cycle cost is more than 60% lower than that of stainless steel, reducing maintenance costs.
- Corrosion resistance: hot dip galvanized zinc layer is thick and uniform, can resist water, air and other substances corrosion.
- Processing: stamping, bending, rolling, welding.
- Aesthetics: The gloss level of the coating can be adjusted and the surface can be painted with different colors.
Usages
- Construction field: G550+Z180-Z275 can be used for wall panels of steel structure houses and factories, large-span roofs, keels of high-rise curtain walls; outdoor structural parts such as bridges and guardrails.
- Automotive industry: lightweight components (such as frame beams, compartment panels, battery pack boxes), reducing the weight of the whole vehicle and improving fuel/range efficiency.
- Home appliance industry: refrigerator, washing machine, air conditioner shell.
- Logistics & Warehousing: Racking systems (e.g. columns, panels), beams, pallets.
- New energy: G550+AZ150 for production of photovoltaic mounts.
G550 Galvanized Steel Factory and Manufacturer
Wanzhi Group produces hot dip galvanized steel products in accordance with international standards such as ASTM A653 (USA) and EN 10346 (Europe), including G550 Galvanized steel coil and sheet, strips, profiles, etc. We are able to provide galvanized steel OEM ODM services for large-span buildings, photovoltaic racks, industrial projects, and coastal facilities. G550 Galvanized Factory
G550 Galvanized Steel Factory
Our factory is certified by ISO9001, ISO14001, etc, with annual production capacity of 600,000 tons, supporting customized production, sample testing, free sample, third party verification by SGS/BV and so on. As a professional coated steel factory, we have not only steel production lines, but also corrugated sheet processing, flatting/bending/stamping lines to provide one-stop service for different applications.
G550 Galvanized Manufacturer
So far, we have provided cost-effective steel solutions for various projects such as construction projects, coastal engineering, home appliances manufacturing, commercial hospitals, drainage channel manufacturing, purlin manufacturing and so on. Our products have also received feedback from customers all over the world.
Finished Products
Comparison of G550 Steel with Other Steel Materials
| Material Type | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HRB) |
| G550 Galvanized Steel | ≥550 | 600~720 | ≥5% | 75~85 |
| G300 Galvanized Steel (Standard) | 300~350 | 350~450 | ≥12% | 50~60 |
| Q235 Carbon Steel | 235 | 370~500 | ≥25% | 65~75 |
| SUS304 Stainless Steel | 205 | 515 | ≥40% | 80~90 |
| 6061-T6 Aluminum Alloy | 275 | 310 | ≥10% | 60~70 |
G550 galvanized steel is a lightweight metal material with both high strength and corrosion resistance. It is widely used in construction, automotive and other fields that require high material performance due to its light weight, long life, corrosion resistance and high strength. Contact Wnzhi Group for your steel solution!