Galvanized Strip Coil ASTM A653 Gauge 20 and Color Coated Coil ASTM A792 Gauge 24 Price
Introduction
Steel coils manufactured under ASTM standards are widely used in global industries due to their strength, corrosion resistance, and versatility. Two of the most in-demand categories are:
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Galvanized strip coil ASTM A653 (Gauge 20) – valued for its zinc coating and durability.
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Color-coated coil ASTM A792 (Gauge 24) – appreciated for its corrosion resistance and aesthetic finish.
Both play a critical role in construction, roofing, appliances, and infrastructure. Understanding their pricing and applications helps buyers make smarter procurement decisions.
Galvanized Strip Coil ASTM A653 Gauge 20
What is ASTM A653?
ASTM A653 is the U.S. standard specification for hot-dip galvanized steel sheet and strip. It defines the zinc coating requirements, mechanical properties, and thickness tolerances.
Gauge 20 Thickness
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Gauge 20: Approximately 0.91mm thickness.
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This size is highly popular in building panels, ducts, and light structural applications.
Current Price Range (2025)
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Per Ton: $700 – $880
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Per kg Estimate: $0.70 – $0.88
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Per lb Estimate: $0.32 – $0.40
Applications of ASTM A653 Gauge 20 Galvanized Strips
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Roofing sheets and wall cladding
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Ducting and HVAC systems
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Automotive spare parts
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Agricultural storage and equipment
Color Coated Coil ASTM A792 Gauge 24 Price
What is ASTM A792?
ASTM A792 is the specification for 55% aluminum-zinc alloy-coated steel sheet, also known as Galvalume®. When color coated, these coils combine superior corrosion resistance with aesthetic finishes, making them ideal for roofing and decorative uses.
Gauge 24 Thickness
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Gauge 24: Approximately 0.61mm thickness.
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This is one of the most common thicknesses for roofing panels, siding, and architectural applications.
Current Price Range (2025)
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Per Ton: $820 – $1,050
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Per kg Estimate: $0.82 – $1.05
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Per lb Estimate: $0.37 – $0.47
Applications of ASTM A792 Gauge 24 Color Coated Coils
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Residential and commercial roofing
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Architectural wall cladding
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Industrial sheds and warehouses
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Decorative exterior panels
Price Comparison: ASTM A653 vs ASTM A792
| Specification | Gauge | Thickness (mm) | Price Range per Ton | Best Use Case |
|---|---|---|---|---|
| ASTM A653 (Galvanized) | 20 | ~0.91mm | $700 – $880 | Structural, ducts, roofing base sheets |
| ASTM A792 (Color Coated) | 24 | ~0.61mm | $820 – $1,050 | Roofing, siding, decorative finishes |
Key Insights
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ASTM A653 Galvanized (Gauge 20): More affordable, thicker, suitable for structural use.
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ASTM A792 Color Coated (Gauge 24): Slightly more expensive due to aluminum-zinc alloy and color coating, primarily used in visible, aesthetic applications.
Future Price Trends
ASTM A653 Galvanized Strips
Prices may remain in the $710 – $890/ton range, influenced by zinc costs and construction demand.
ASTM A792 Color Coated Coils
Expected to stay higher at $830 – $1,100/ton, supported by rising demand for pre-painted roofing and cladding.
Conclusion
The galvanized strip coil ASTM A653 gauge 20 is a cost-effective solution for structural and protective applications, while the color coated coil ASTM A792 gauge 24 offers enhanced corrosion resistance and aesthetic appeal, particularly in roofing and siding.
For buyers, the choice depends on project requirements: durability and affordability (A653, Gauge 20) versus aesthetics and long-term protection (A792, Gauge 24).
