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Material and Substrates

Substrates. Coated Carbon Steel Hot Dipped Galvanized G-90Galvalume AZ50AZ55AluminumAlloy 3003, 3004, 3105, 5052Temper, H14, H24, H34. Steel Material Thickness. Example Tolerances:26 Gauge =.016" to .020"24 Gauge =.021" to .027"22 Gauge =.027" to .033". Material thickness of steel is referred to as Gauge (GA).Gauge is the two digit number that relates to the thickness of the steel sheet in decimal inches. The larger the Gauge number, the thinner the sheet..

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Material and Substrates

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    1. “Material and Substrates”

    2. Substrates Coated Carbon Steel Hot Dipped Galvanized G-90 Galvalume AZ50 AZ55 Aluminum Alloy 3003, 3004, 3105, 5052 Temper, H14, H24, H34

    3. Steel Material Thickness Example Tolerances: 26 Gauge = .016” to .020” 24 Gauge = .021” to .027” 22 Gauge = .027” to .033”

    4. Steel Material Thickness

    5. Steel Grades Material grade is determined by “Yield Strength” (Hardness) Examples: Panel Steel Grade Yield 26 Gauge = 50 50KSI 26 Gauge = 80 80KSI 24 Gauge = 50 50KSI Trim Steel Grade Yield 26 Gauge = 50 50KSI 24 Gauge = 50 50KSI Note: 1,000 PSI = 1 KSI

    6. Hot Dipped Galvanized

    7. Galvalume

    8. Galvalume vs. Galvanized

    9. Galvalume vs. Galvanized Hot Dipped Galvanized After 18 years, G-90 Galvanized exhibits red rust Galvalume Galvalume after 23 years – No major sign of red rust.

    10. Salt Spray Corrosion Resistance With cut edges protected, the coating on Galvalume AZ50 lasts 5 to 10 times longer than the coating on G90 Hot Dipped Galvanized. Salt spray tests conducted with bare cut edges exposed, the corrosion resistance of Galvalume AZ50 is typically three to four times that of G90 HD Galvanized.

    11. Salt Spray test concerning the amount of hours to first significant rust

    12. Corrosion Losses of Substrates Corrosion Loss (Mils) Severe Marine – 80 foot MarineCorrosion Loss (Mils) Severe Marine – 80 foot Marine

    13. Dissimilar Metals Copper Iron Graphite Lead

    14. Aluminum Conforms to ASTM B209-96. Either: From ingot. From recycled scrap content. Advantages: Light in weight. Highly resistant to corrosion. Excellent reflector of light and heat. Highly workable and easy to form.

    15. Aluminum Two Types of Alloys: Cast and Wrought Cast have low melting points and tensile strength. Wrought have high tensile strengths and are 85% of aluminum usage. Standard Alloys for Roofing and Cladding; 3003,3004 alloy corrosion resistance and formability are excellent. 3105 alloy is an essentially 98% pure aluminum 5052 alloy is excellent and in the annealed condition it offers higher strengths than 3003/3004/3105 alloys.

    16. Aluminum The International Alloy Designation System is the most widely accepted naming scheme for wrought alloys. Each alloy is given a four-digit number, where the first digit indicates the major alloying elements. 1000 series are essentially pure aluminum. 2000 series are alloyed with copper. 3000 series are alloyed with manganese, and can be work-hardened. 4000 series are alloyed with silicon. 5000 series are alloyed with magnesium. 6000 series are alloyed with magnesium and silicon. 7000 series are alloyed with zinc, and can be precipitation hardened to the highest strengths of any aluminum alloy. 8000 series is a category used for lithium alloys.

    17. Aluminum Thickness; .032” , .040” , or .050” Tempers; H 14, H 24, or H 34 for roofing product. H1  Strain hardened without thermal treatment. H2  Strain hardened and partially annealed. H3  Strain hardened by low temperature heating. A second digit denotes the degree of hardness. HX2 = 1/4 hard HX4 = 1/2 hard HX6 = 3/4 hard HX8 = full hard HX9 = extra hard

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