亜鉛メッキ鋼板ゲージ厚さ表

Choosing the right thickness for galvanized steel is crucial for your project’s success. In this guide, we cover practical uses for each gauge and provide a complete thickness chart to make selection easy and precise.

Why the Thickness Specification of Galvanized Steel Sheets Matters

• Ensures Structural Integrity: Choosing the correct thickness is key to achieving the structural strength required, especially in load-bearing applications, minimizing risks of bending or failure.
• Improves Durability Against Corrosion: Choosing an adequate thickness of the galvanized layer significantly enhances rust resistance, which is essential for structures exposed to moisture or harsh weather conditions.
• Supports Safety Compliance: Following thickness, standards is not just best practice; it’s a legal and safety requirement in many industries, reducing the risk of costly compliance issues and potential hazards.
• Balances Material and Project Costs: Correct thickness avoids unnecessary costs—too thick means excess material, while too thin may demand costly repairs or replacements, impacting budgets and timelines.
• Optimizes Performance in Specific Environments: Galvanized sheets of the correct thickness perform reliably in corrosive and high-stress conditions, avoiding unexpected maintenance or structural damage.
• Minimizes Maintenance and Downtime: With the right thickness, galvanized sheets require less frequent upkeep, reducing downtime and extending intervals between repairs.
• Prevents Warping and Deformations: Incorrect thickness, especially if too thin, can lead to deformation under thermal or mechanical stress, impacting alignment and fit in precision applications.
• Enhances Aesthetic Consistency: For projects where appearance is vital, correct thickness provides a smooth, even finish, improving visual appeal and ensuring uniformity.

亜鉛メッキ鋼板ゲージ厚さ表

We’ve provided a comprehensive Galvanized Steel Gauge Chart below, listing each gauge’s thickness in both inches and millimeters. For custom specifications, feel free to お問い合わせ.

Which Is Thicker: 14 or 18 Gauge Steel?

14 gauge steel is thicker than 18 gauge steel. The lower the gauge number, the thicker the steel sheet.

Is 20 Gauge Steel Stronger Than 18 Gauge?

18 gauge steel is stronger than 20 gauge. Higher gauge numbers mean thinner, less durable steel.

How to Calculate Galvanized Steel Sheet Metal Thickness

Calculating the thickness of galvanized steel sheet metal involves understanding both the base steel thickness and the thickness added by galvanization. Here’s a step-by-step guide:

1. Identify the Base Metal Thickness: Start by determining the gauge of the uncoated steel sheet. Each gauge corresponds to a standard thickness, typically measured in inches or millimeters.
2. Measure the Galvanized Coating Thickness: Galvanization adds a protective zinc layer on both sides of the steel. Standard methods, such as using a micrometer or magnetic thickness gauge, help measure this added coating precisely. The typical zinc coating ranges from 0.001 inches (0.025 mm) to 0.004 inches (0.1 mm) per side.
3. Account for Double Coating: Since the zinc layer covers both sides, multiply the coating thickness by two. For instance, if each side has a 0.002-inch zinc layer, add 0.004 inches total to the base metal thickness.
4. Calculate the Total Thickness: Add the double coating thickness to the base steel thickness. For example, if the uncoated steel is 0.0396 inches (gauge 20) and each zinc layer is 0.002 inches, the total thickness becomes 0.0436 inches.
5. Convert Units if Necessary: If working in millimeters, ensure all measurements are converted accurately to maintain consistency and precision.

This calculation helps ensure that the final galvanized sheet meets structural and specification requirements, factoring in both protection and thickness.

Formula

Total Thickness=Base Metal Thickness+(2×Coating Thickness)\text{Total Thickness} = \text{Base Metal Thickness} + (2 \times \text{Coating Thickness})Total Thickness=Base Metal Thickness+(2×Coating Thickness)

Explanation

• Total Thickness: The overall thickness of the galvanized sheet.
• Base Metal Thickness: The thickness of the uncoated steel sheet, often defined by its gauge.
• コーティングの厚さ: The thickness of the zinc coating on one side of the sheet. Since the coating is applied to both sides, this thickness is doubled.

Example Calculation

If the base metal thickness is 0.0396 inches (20 gauge), and the zinc coating thickness on each side is 0.002 inches, then:

Total Thickness=0.0396+(2×0.002)=0.0436 inches\text{Total Thickness} = 0.0396 + (2 \times 0.002) = 0.0436 \text{ inches}Total Thickness=0.0396+(2×0.002)=0.0436 inches

This formula may helps in quickly estimating the final thickness, ensuring the galvanized sheet meets specifications.

Applications of Different Thicknesses of Galvanized Steel Sheets

Choosing the correct thickness of galvanized steel sheets ensures durability and effectiveness across various applications. Here is a breakdown of common uses for each thickness range.

Thick Galvanized Steel Sheets (8–14 Gauge)

• Structural Support: Load-bearing frameworks, beams, supports
• Heavy-Duty Fencing: Industrial fencing, security enclosures
• Transportation and Shipping Containers: Shipping containers, railcars, trucks
• 農業機械: Farm machinery, heavy-duty equipment

Medium Thickness Galvanized Steel Sheets (15–18 Gauge)

• Residential Roofing and Siding: Roofing, siding for homes and light commercial buildings
• Light Structural Frames: Non-load-bearing walls, garage doors, frames
• Automotive Panels: Car body panels, protective panels
• Ductwork and Ventilation Systems: HVAC ducts, ventilation systems

Thin Galvanized Steel Sheets (19–24 Gauge)

• Interior Paneling and Decorative Features: Wall panels, ceiling tiles, decorative finishes
• 家電製品: Refrigerators, washing machines, appliance casings
• Temporary or Lightweight Fencing: Portable fences, lightweight enclosures
• Small-Scale DIY Projects: Home crafts, DIY decor

Ultra-Thin Galvanized Steel Sheets (25–30 Gauge)

• Flashing and Trim Work: Roofing flashing, edge trim
• 電気エンクロージャ: Small electrical cases, component enclosures
• Crafts and Art Projects: DIY crafts, decorative art projects
• Light Insulation Covers: Insulation covers, protective layers

Customizable Specifications At SteelPRO Group Galvanized Steel Manufacturer

We understand that every application requires a precise specification, whether it’s for heavy-duty structural support or lightweight, decorative uses. Our extensive range of galvanized steel sheets, from thicker gauges for robust frameworks to thinner ones for decorative finishes, provides the right solution for your needs. Our expert support team ensures precise specifications and high quality.

We use advanced measurement techniques and rigorous quality control processes to guarantee that the thickness, coating, and overall performance meet your exact requirements.  Let us help you make your next project a success with our top-quality galvanized steel sheets products.