ARCHITECTURAL ZINC. Technical Guide. Superior performance for superior design

Size: px

Start display at page:

Download "ARCHITECTURAL ZINC. Technical Guide. Superior performance for superior design"

Darren Dalton
6 years ago
Views:

1 ARCHITECTURAL ZINC Technical Guide

Superior Performance for Superior Design About Jarden Zinc Architectural Zinc Jarden Zinc Products, located in Greeneville, Tennessee, is a leading global zinc Zinc s unique characteristics are

At Jarden Zinc Products, we cast and roll solid zinc strip at our 350,000 square-foot manufacturing facility.

2 Superior Performance for Superior Design About Jarden Zinc Architectural Zinc Jarden Zinc Products, located in Greeneville, Tennessee, is a leading global zinc Zinc s unique characteristics are desirable for a wide array of applications. ABOUT coil producer and the only North American manufacturer of architectural zinc strip. At Jarden Zinc Products, we cast and roll solid zinc strip at our 350,000 square-foot manufacturing facility. As an ISO 9001:2008-certified facility, we Architects and contractors utilize zinc for interior and exterior facades, freestanding walls as well as roofing material. Zinc s patination process creates a natural protective barrier when exposed to elements in the atmosphere. ABOUT continuously monitor and test to ensure a consistent, high-quality product that This patina causes the zinc to become even more beautiful as it ages. This is used throughout the world for a variety of applications. self-healing property gives zinc a maintenance-free life span of 100 years or more depending on the environmental conditions in which it is installed. We are a subsidiary of Jarden Corporation, a Fortune 500 company. Jarden Corporation is a leading provider of consumer and industrial products under Other zinc advantages: well-known brand names that include K2, Rawlings, Marmot, Coleman Highly formable and Yankee Candle Company. Extremely durable Corrosion resistant Self-healing 100% recyclable 2 3

Compatibility with Other Metals SUPERIOR PROPERTIES Superior Properties Physical Properties Alloy 710 Description We use 99.

3 Compatibility with Other Metals SUPERIOR PROPERTIES Superior Properties Physical Properties Alloy 710 Description We use % pure, Special High Grade zinc combined with copper and titanium in controlled amounts to improve hardness, strength, ductility and creep resistance. Jarden zinc is continuously cast and rolled into solid zinc strip in a variety of gauges that meet ASTM B69 and EN 988 standards. Composition (% by wt.) Copper 0.10 to 0.25 Titanium 0.06 to 0.10 SHG Zinc (99.995% pure) balance Physical and Mechanical Properties English Metric Density (lb/in 3 ) 7.17 (g/cm 3 ) Melting Point ( F) 792 ( F) 422 ( C) Coefficient of Thermal Expansion 15.4 (μin/in F) 27.7 (μm/m K) Electrical Conductivity 26 (% IACS) Electrical Resistivity (Ω cir. mil/ft) 6.58 (Ω cm) Thermal Conductivity 60.5 (BTU/ft hr F) 105 (W/m K) Specific Heat (BTU/lb F) 400 (j/kg K) Shear Strength 24 to 28 (ksi) 165 to 193 (MPa) Tensile Strength 21 to 28 (ksi) 145 to 193 (MPa) Hardness 50 to 68 (Rockwell 15T) % Elongation (in 2") Special Mechanical Test Parameters: Ref. ASTM B69-98a, Section 7.1.1: for Tensile Properties testing, the recommended rate of separation of the heads should be in./in./min., which is equivalent to a cross-head speed of in./min.; and Section 7.1.2: for Hardness testing, the dwell time of the major load should be 15 seconds. Material Compatibility While zinc is versatile and can be used in many applications, it must not come into contact with certain products that will cause a galvanic reaction to occur (see pages 6 and 7). Thermal Movement Thermal Movement in 30-Foot Length at 160oF Temperature Differential Zinc, 0.89 in. Aluminum, 0.71 in. T304 Stainless, 0.55 in. Copper, 0.54 in. Steel, 0.42 in. Inches of Movement Manufacturing Specifications ASTM B69-13 EN 988/ 1179 Corroded End (Anodic or Least Noble) Magnesium Magnesium Alloys Zinc Galvanized Steel Aluminum 5052, 3004, 3003, 1100, 6053 Cadmium Aluminum 2117, 2017, 2024 Mild Steel (1018), Wrought Iron Cast Iron, Low-Alloy, High-Strength Steel Chrome Iron (Active) Stainless Steel, 430 Series (Active) 302, 303, 304, 321, 347, 420, 416, Stainless Steel (Active) Ni-Resist 316, 317, Stainless Steel (Active) Carpenter 30 Cb-3 Stainless Steel (Active) Aluminum Bronze (Ca 687) Hastelloy C (Active), Inconel 625 (Active), Titanium (Active) Lead-Tin Solders Lead Tin Inconel 600 (Active) Nickel (Active) 60 Ni-15 Cr (Active) 80 Ni-20 Cr (Active) Hastelloy B (Active) Brasses Copper (Ca 102) Manganese Bronze (Ca 675), Tin Bronze (Ca 903, 905) Silicon Bronze Nickel Silver Copper, Nickel Alloy Copper, Nickel Alloy Stainless Steel Nickel, Aluminum, Bronze (Ca 630, 632) Monel 400, K500 Silver Solder Nickel (Passive) 60 Ni-15 Cr (Passive) Inconel 600 (Passive) 80 Ni-20 Cr (Passive) Chrome Iron (Passive) 302, 303, 304, 321, 347, Stainless Steel (Passive) 316, 317, Stainless Steel (Passive) Carpenter 20 Cb-3 Stainless Steel (Passive), Incoloy 825 Nickel-Molybdenum-Chromium-Iron Alloy (Passive) Silver Titanium (Passive), Hastelloy C and C276 (Passive), Inconel 625 (Passive) Graphite Zirconium Gold Platinum SUPERIOR PROPERTIES Protected End (Cathodic or Most Noble) 4 5

Material Compatibilities Electrical Potential between Zinc and Other Cladding Metals Compatibility with Bituminous Felt MATERIAL COMPATIBILITIES Zinc Galvanized Steel: 0.05V Zinc Aluminum: 0.

90V In exterior applications that are exposed to the elements, typically there Bituminous felt can pose an increased risk of corrosion when in contact with zinc due to water retention.

4 Material Compatibilities Electrical Potential between Zinc and Other Cladding Metals Compatibility with Bituminous Felt MATERIAL COMPATIBILITIES Zinc Galvanized Steel: 0.05V Zinc Aluminum: 0.35V Zinc Steel: 0.40V Zinc Lead: 0.55V Zinc T3xx Stainless (Active): 0.75V Zinc Copper: 0.90V In exterior applications that are exposed to the elements, typically there Bituminous felt can pose an increased risk of corrosion when in contact with zinc due to water retention. If exposed to bituminous felt, the zinc should be protected by a backside coating that can withstand abrasion due to thermal movement. Compatibility with Concrete Zinc and concrete should not come into direct contact. Zinc should be properly ventilated and protected by a backside coating if exposed to concrete. MATERIAL COMPATIBILITIES should be no more than 0.15V difference in the electrical potential. Galvanized steel cladding is an appropriate material to use with zinc Runoff in this instance. Control of water runoff should be considered, when using other metals in the For exterior applications that are protected from the elements or for interior design. Water from a more noble metal, like copper, should not flow onto zinc. applications where temperature and humidity are not controlled, a difference of more than 0.25V should be avoided. For interior applications in a controlled environment, 0.50V can be tolerated. Materials suitable for use with zinc for interior installations are aluminum, steel and galvanized steel. Compatibility with Wood, Plywood and Treated Wood Zinc may be used with non-acidic wood such as pine, poplar and spruce. Contact with acidic wood may cause galvanic corrosion in zinc and should be avoided; these include birch; chestnut; Douglas fir; larch; oak; and red, white and yellow cedar. Due to the varying fiber content and potential for phenolic adhesives, zinc should not come into direct contact with plywood or chipboard. These materials may absorb moisture beneath the zinc and therefore could pose an increased risk of corrosion to the zinc. If plywood is used, we recommend exterior-quality treated plywood along with zinc that is protected by a backside coating and BreeZemat 10 or 20 above 6 sheathing ventilations. 7

5 Product Considerations Patina and Corrosion Zinc naturally forms a grey patina over time, usually taking several years to fully develop. The patina, a form of zinc hydroxyl-carbonate, not only develops into a beautiful and desired finish, it also provides a protective layer extending the life of the zinc. Handling Zinc materials should be handled with care. Do not drop, drag or slide zinc material which can cause dings or surface abrasions. This could result in cracking or other damage to its appearance and/or structural integrity over time. PRODUCT CONSIDERATIONS Occasionally efflorescence or white rust will form on the surface of the zinc. This is a natural and temporary stage of the patination process and is not a cause for rejection. Oils in the skin and perspiration will leave marks on the zinc surface, therefore installers should always wear gloves and a long-sleeved shirt when handling. While these marks will heal over time through the patination process, they will remain visible for a time, affecting the aesthetic appearance of the zinc immediately after installation. PRODUCT CONSIDERATIONS When zinc is used near the coast, salt deposits may develop, particularly on protected areas of the building such as soffits. This is a natural occurrence that happens when water condenses from the zinc, leaving the salt behind. Sea spray also contributes to this condition. While salt deposits are not harmful to the zinc, persistent white marks may appear over time if the salt is not washed off by rain. Field Storage Zinc products must be stored in a dry, sheltered and well-ventilated area. It is imperative that water is prevented from collecting on the panels in either large coverage conditions or small ponding conditions. Jarden Zinc Product s pre-weathered Glacier Gray finish provides the designer with an immediate look of naturally weathered zinc. The Glacier Gray preweathering process most accurately resembles the innate patinated appearance that all zinc products will, over time, inherently achieve. All pre-weathered zinc products may have variations in the surface aspect or shades of grey as would occur if the zinc were to develop its zinc carbonate patina naturally. Individual zinc panels can blend together to a homogenous surface aspect based on the specific location and orientation of the building. Protected areas will form their naturally forming patina slower than wall or roof surfaces. South facing elevations may develop at a slower rate due to the sun evaporating moisture from the panel surface at a faster rate. Sheets, coils and panels must be stored in a manner that allows free air movement to prevent condensation or water from building up on the zinc. Temperature variations should be controlled to avoid condensation buildup. Also, covering the ground below will help prevent moisture from rising up and condensing on the panels. Cover material to prevent standing water, dirt and construction debris from settling on zinc. The cover should not cause a condensation buildup such as might occur with a tarp. If using plywood, use spacers to separate from zinc and to allow proper drainage and ventilation. Panels can be stacked face-to-face horizontally or vertically and must be braced with adequate support to maintain flat panel stacks. Elevate one end of horizontal stacks to avoid standing water. Maximum horizontal stack height is 10 nested panel levels (2 panels face-to-face equals 1 nested level). Zinc is a 100% natural product, the surface of Glacier Grey exhibits the natural colors of the base elements. Therefore, variation in color should be expected and color match cannot be guaranteed. 8 9

Design Considerations White Rust Construction Dust and Debris DESIGN CONSIDERATIONS When fresh zinc is exposed to water or humidity without ventilation before developing a patina, white rust,

Take care during transportation and storage to prevent white rust from forming on the material before installation.

Store the zinc in dry places, and While runoff from limestone onto zinc is acceptable, the limestone and gypsum dust created when cutting these materials can react with zinc when water is present to

6 Design Considerations White Rust Construction Dust and Debris DESIGN CONSIDERATIONS When fresh zinc is exposed to water or humidity without ventilation before developing a patina, white rust, otherwise known as zinc oxide or hydroxide, will form on the surface. It has low adhesion to the surface of the zinc and, unlike the patina, does not offer any protection. Take care during transportation and storage to prevent white rust from forming on the material before installation. If water is trapped between sheets on a pallet or within the coil, white rust may form. Store the zinc in dry places, and While runoff from limestone onto zinc is acceptable, the limestone and gypsum dust created when cutting these materials can react with zinc when water is present to form white rust. Remove limestone and gypsum dust from zinc surfaces to avoid white rust from forming. Protective Film To avoid color variation due to weathering, remove protective film from all panels at the same time, as soon as the elevation is complete. The protective DESIGN CONSIDERATIONS use packaging that facilitates rapid evaporation of water. Try to avoid significant film may degrade when exposed to the elements. temperature variations or humidity during transport and storage. Cleaning Temperature Considerations Use a soft rag with mild detergent and hot water to clean the surface of the zinc. If forming or bending zinc in temperatures below 45 degrees F (7 degrees C), To remove oil stains or adhesive residue, use mineral spirits with a soft, clean zinc must be warmed to at least 60 degree F (16 degrees C). This includes rag; be careful not to remove the patina, and wipe in the direction of the grain pan-ending, turning down caps and all other field-bending operations. of the material

Soldering Solid zinc strip alloys can be successfully soldered. The surface should be solvent cleaned and flux applied sparingly, not poured on the surface.

7 Application Considerations APPLICATION CONSIDERATIONS Caulks and Sealants Polyurethane caulks and sealants are compatible with zinc. The caulk or sealant must be able to sustain high temperatures for extended periods of time. Avoid caulks or sealants with an acidic cure, as they will corrode the zinc. Soldering Solid zinc strip alloys can be successfully soldered. The surface should be solvent cleaned and flux applied sparingly, not poured on the surface. Allow a short time for the metal flux to react. A solution of zinc chloride can be used as a flux, which can also be mixed with ammonium chloride. Some proprietary non-acid fluxes are also available. Clean the soldering iron with ammonium chloride solution from time to time. When completed, wash the soldered joint with water or wipe with a wet rag to remove excess acid and flux. For best results, use a solder stick x (1.6 mm x 4.8 mm) cross section. The narrow edge permits the bar to touch the joint surfaces close to their intersection. The wide edge is better for finished fillets. Solder joints with a lap at least inches (1.6mm) wide. Butt joints are much weaker and should be avoided when there is the possibility of the joint being stressed during use. When soldering a joint more than inches (16 mm) long, the joint should be tacked with solder at intervals, which will prevent movement. APPLICATION CONSIDERATIONS The melting point of a good flux should be below that of the solder, so that melting and flow will be produced from the heat of the soldering iron. A 60/40 or 50/50 tin/lead solder should be used. Antimony-bearing solder is not satisfactory because it produces brittle joints. Strong, neat joints are more difficult to make with solders containing less than 45% tin. If lead free work is required, solder consisting of 85/15 tin/zinc are suitable for soldering of zinc. Apply heat and solder with a large soldering iron. The joint surface may be abraded slightly to improve fusing action. Neither preheating nor pretinning is needed in normal practice. Flame heating is not recommended. It is important that the soldering iron move slowly in one direction only so that the solder following the iron flows into the seam. A back and forth movement of the soldering iron may cause zinc to dissolve in the solder. This makes the solder gritty, sluggish and brittle. Do not heat the iron to redness nor allow it to dwell in one spot due to the risk of melting the base metal. (Zinc has a low melting point of 792 degrees F.) 12 13

Sustainability SUSTAINABILITY Zinc is a material of choice for sustainable building products.

The International Zinc Association completed an updated Life Cycle Assessment for Special High Grade zinc in 2014.

production. Recyclability When zinc façade and roofing materials eventually meet their end of life, they can be fully recycled.

8 Sustainability SUSTAINABILITY Zinc is a material of choice for sustainable building products. It is a natural and essential element found in rock, air, water and soil and is the 23rd most abundant element on earth. The International Zinc Association completed an updated Life Cycle Assessment for Special High Grade zinc in Their report found zinc to be a sustainable building material due to its durability, its natural resistance to corrosion and harmful UV rays, 100% recyclability and its low energy costs during production. Recyclability When zinc façade and roofing materials eventually meet their end of life, they can be fully recycled. More than 95% of zinc building materials are collected for recycling at the end of their service life, according to the IZA Life Cycle Assessment. Zinc can be recycled indefinitely without degradation of the product or loss of its physical or chemical properties. Here, at Jarden Zinc Products, we use 15% recycled content to cast and roll our Special High Grade zinc alloys. SUSTAINABILITY Durability/Life Span Zinc s ability to self-heal allows for a long life span. Its unique patination process, which occurs naturally over time, protects the zinc s surface, requiring little to no maintenance. This protective patina will self-repair imperfections and scratches throughout its life. Energy Demand (Production) The amount of energy required to produce zinc strip is significantly less than for other building materials such as aluminum, copper and stainless steel. Using recycled zinc reduces energy consumption further, since that material has already passed the mining and processing phase. While the use of exterior zinc applications is relatively new to the Americas, it has been used across Europe, especially in Paris, for many decades

ARCHITECTURAL ZINC Phone or email for more information about our company and products, contact our sales team.

9 ARCHITECTURAL ZINC Phone or for more information about our company and products, contact our sales team. Toll-Free: (800) Phone: (423) Fax: (423) Website: jardenzinc.com Address: Jarden Zinc P.O. Box 1890 Greeneville, TN JZA-BRO

Identification. Type Analysis

Identification. Type Analysis Page 1 of 12 Unit Display: English Print Now Custom 455 Stainless E-Mail Datasheet Add to My Materials UNS Number S45500 Identification Type Analysis Carbon 0.05 % Manganese 0.50 % Phosphorus 0.040 % Sulfur