Tabla de calibres de acero galvanizado
Easily convert gauge to millimeter and inch, check weight per square meter, and find the right thickness for your application.
¿Qué es el calibre del acero galvanizado?
Definición
The gauge system is a traditional measurement for sheet metal thickness. A higher gauge number corresponds to a thinner sheet (e.g., 30 gauge is thinner than 10 gauge).
Por qué es importante
Gauge thickness directly impacts the strength, durability, and cost. Choosing the correct gauge ensures structural integrity for your specific project.
Gauge Thickness Conversion Chart
| Indicador | mm | pulgada | kg/m² |
|---|---|---|---|
| 10 | 3.571 | 0.1406 | 28.03 |
| 12 | 2.769 | 0.1090 | 21.74 |
| 16 | 1.613 | 0.0635 | 12.66 |
| 18 | 1.214 | 0.0478 | 9.53 |
| 20 | 0.914 | 0.0360 | 7.18 |
| 22 | 0.759 | 0.0299 | 5.96 |
| 24 | 0.607 | 0.0239 | 4.76 |
| 26 | 0.455 | 0.0179 | 3.57 |
| 28 | 0.378 | 0.0149 | 2.97 |
| 30 | 0.305 | 0.0120 | 2.39 |
* Values based on ASTM A653 standard for Galvanized Steel.
Gauge Weight Calculator
Peso estimado:
Espesor utilizado: 0 mm
Fórmula de cálculo
- - Densidad: 7.85 g/cm³ (Standard for steel)
- - Nota: Coating weight adds slightly but is negligible for general estimation.
Common Gauge Sizes & Applications
Roofing Sheets (26–29 gauge)
Lightweight yet durable, ideal for residential and commercial roofing applications where weight is a concern but protection is still required.
Wall Panels & Partitions (24–26 gauge)
Balances strength and formability, perfect for architectural wall panels, partitions, and decorative metal applications.
Heavy Duty Applications (16–20 gauge)
Thicker gauges for structural components, industrial equipment, truck bodies, and applications requiring maximum strength.
International Standards Comparison
| Indicador | ASTM (mm) | JIS (mm) | EN (mm) |
|---|---|---|---|
| 10 | 3.571 | 3.500 | 3.600 |
| 12 | 2.769 | 2.800 | 2.700 |
| 16 | 1.613 | 1.600 | 1.500 |
| 18 | 1.214 | 1.200 | 1.250 |
| 20 | 0.914 | 0.900 | 0.950 |
Why thickness varies between standards
Different countries developed their own gauge systems based on historical manufacturing processes. While modern standards are converging, slight variations remain between ASTM (USA), JIS (Japan), and EN (Europe). Always verify the standard referenced in your project specifications.
How Galvanized Steel Is Made
Hot-dip galvanizing is the most widely used corrosion protection method. Understanding the process helps you evaluate coating quality and select the right product specification.
Limpieza de superficies
Steel is degreased, pickled in dilute acid, and fluxed to remove all oxides and contaminants.
Baño de zinc
Steel is immersed in molten zinc at ~450 °C. A metallurgical bond forms between iron and zinc.
Recubrimiento y enfriamiento
Excess zinc is wiped off by air knife. The sheet cools to form a uniform, adherent zinc layer.
g/m² of zinc per side. Higher value = thicker coating = better corrosion resistance.
Depending on coating weight and exposure environment (industrial vs. rural).
The primary international reference standard for hot-dip galvanized sheet steel.
How to Choose the Right Gauge
Three factors determine the correct gauge: load requirement, forming complexity, and budget. Use this quick-reference matrix to narrow down your choice.
| Tipo de solicitud | Recommended Gauge | Consideración clave | Recubrimiento típico |
|---|---|---|---|
| Techos residenciales | 26–28 Ga | Lightweight; must withstand wind uplift and foot traffic | Z120–Z180 |
| Techos comerciales | 24–26 Ga | Wider spans; higher snow/wind load requirements | Z180–Z275 |
| Revestimientos y paneles para paredes | 24–26 Ga | Formability for profiling; surface finish quality | Z120–Z180 |
| Conductos y carcasas de sistemas de climatización | 20–24 Ga | Pressure ratings; joint integrity; light forming | Z60–Z120 |
| Estructura de la obra | 16–20 Ga | Límite elástico; soldabilidad; límites de deflexión | Z180–Z275 |
| Equipos industriales | 10–16 Ga | Impact resistance; heavy load-bearing capacity | Z275+ |
Rule of Thumb
When in doubt, go one gauge thicker. The cost difference is usually under 8%, while the performance margin is significant — especially in coastal or high-humidity environments.
Check Local Codes
Building codes in many regions specify minimum gauge requirements by application type. Always verify against applicable standards (ASTM, EN, JIS) before finalizing specifications.
Real-World Applications by Industry
Galvanized steel serves a wide range of industries. Below are representative use cases with typical specifications.
Solar Energy
Mounting brackets and ground racking systems for utility-scale solar farms require galvanized steel that withstands 25+ years of outdoor exposure with minimal maintenance.
Pre-engineered Buildings
Warehouses, logistics hubs, and agricultural storage facilities rely on galvanized roof and wall panels for rapid construction and low lifecycle costs.
Procesado de alimentos
Ventilation systems, drainage channels, and structural supports in food plants need consistent coating quality to meet hygiene standards and resist chemical cleaning agents.
Commercial Vehicles
Truck bodies, cargo floors, and underbody panels require high-strength galvanized sheet that withstands road vibration, moisture, and mechanical impact.
Preguntas frecuentes
Common questions from buyers and engineers, answered clearly.
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