SETTING A NEW MARINE STANDARD Setting a new marine standard Performance is as important in the yard as it is on the water. You want high performance, user-friendly materials that give you the freedom to express your vision. Structural efficiency. Unimpeachable quality. And genuine versatility. That’s why so many of today’s best performing vessels, large and small, are constructed from Alcoa aluminium. Ever since we developed strain-hardened 5xxx series alloys to provide the exceptional strength, workability and corrosion resistance that marine applications require, aluminium has been the material of choice for forward-looking designers wherever durability, economy of operation and construction, responsiveness or sheer speed are priorities. Photograph courtesy of Damen Shipyards Group, Netherlands, 2008 Photograph courtesy of Kvichak maine Industries Photograph courtesy of Mondo Marine, Italy, 2008 H128. Combining improved corrosion resistance with high yield strength Alcoa’s new temper for marine sheet is specifically designed to provide both commercial and naval shipbuilders with improved corrosion resistance. H128 meets an accelerated corrosion test specified by the US Navy to provide resistance to sensitisation and contribute to ships meeting their planned service life. Nautic-Al H128 provides superior thermal stability and higher corrosion resistance, reducing risk and lowering maintenance and repair costs. Additionally, building with H128 offers the possibility of cost saving through less painting costs and simplified warranty plans. The excellent corrosion resistance of Nautic-AL alloys is one of their most important characteristics. Welds of these products are normally as corrosion resistant as the parent alloy. Under certain conditions, however, such as exposure to high temperatures, marine alloys may become susceptible to inter-granular and exfoliation corrosion. Another Alcoa ‘first’ Photograph courtesy of CRN Shipyard, Italy, 2008 Regular, prolonged, periods of deck temperatures above 70 ºC have been recorded on Naval ships and corrosion, in combination with the stress endured during the long service life of a vessel, can lead to cracks in both painted and unpainted ship hulls. This inevitably leads to higher maintenance costs or substantial repair costs to remedy water intrusion. Alcoa was first to develop this new temper through a two-year development programme between the Alcoa Technical Center in Pittsburgh (USA) and the manufacturing facilities in Fusina (Italy) and Davenport (USA), and filed it for registration at the US Aluminium Association, along with a revision to ASTMB928 to include H128 and its testing requirements. SETTING A NEW MARINE STANDARD Naval Aluminium Think Light With a specific weight about one third that of steel, an aluminium hull and superstructure typically weighs less than half as much as a steel one of equivalent strength. This lightness translates into greater capacity, speed or fuel economy and range as well as conferring inherently superior manoeuvrability. The advantage is even greater in vessels of less than 30 metres (where hull weight is more critical) because of minimum plate thickness. Stronger An aluminium hull will survive significantly higher ultimate loads than a comparable GRP (glass reinforced plastic) hull, and since aluminium is less brittle there is less risk of hull penetration. Additionally small holes do not enlarge with external pressure as is the case with GRP. Aluminium has far greater structural efficiency (stiffness-to-density ratio) than steel – and with magnesium as the major alloying element, the fatigue strength of 5xxx series products is among the highest of all aluminium alloys. Nautic-Al H128 – High Yield Strength and Corrosion Resistance 5454-H32 1 2 3 Corrosion Resistance www.alcoa.com/nautical 4 Easier Aluminium is of course as easy to work as it is versatile – easy to cut, bend, cold form and engineer with standard tools. Alcoa 5xxx alloys are quick to weld using GMA-W or GTA-W processes; not only does aluminium resist distortion during welding better than steel, but the welds themselves are highly ductile for subsequent cold forming. Taken together, these factors deliver considerable cost advantages for the constructor. Total capability 5083 H128 5086 0 With a microstructure designed for excellent corrosion resistance in the harshest marine environment, aluminium sheets are the perfect choice and can have a positive impact on long-term maintenance. They are suitable for a wide range of surface treatments. All Nautic-Al products meet or exceed the ASTM B928 standard for high magnesium aluminium-alloy sheet and plate for marine service and therefore meet the corrosion requirements of both the ASTM G66 (ASSET) and ASTM G67 (NAMLT) tests. 5 The undisputed world leader in aluminium production and technology, Alcoa gives you the benefit of complete technical design, engineering and production support. All the marine aluminium products in the comprehensive Nautic-Al range are tested to the highest international standards. And as you would expect of a company voted one of the most sustainable corporations on the planet by the World Economic Forum every year since the ranking began, Alcoa products are easy to recycle - almost 70% of the aluminium ever produced is still in use. Photograph courtesy of Austal Shipyards, Australia. 5083 Yield Strength 5456 Tougher Mechanical Properties The following limits are given according to EN 485-2 standard. Tensile testing performed according to EN 10002-1 standard. Alloy Temper O H111 EN AW5083 H112 H116 H321 H128 O H111 EN AW5086 H112 H116 H321 O EN AW5456 H116 H321 EN AW5154A O H111 O H111 EN AW5754 H32 H34 H32 EN AW5052 H34 (1) For information only Thickness mm Over Up to ≥ 1,5 3,0 3,0 6,3 6,3 12,5 12,5 50,0 50,0 80,0 ≥ 8,1 12,5 12,5 40,0 40,0 80,0 ≥ 1,5 3,0 3,0 6,0 6,0 12,5 12,5 40,0 40,0 60,0 > 3,0 8 ≥ 1,5 3,0 3,0 6,0 6,0 12,5 12,5 80,0 ≥ 8,1 12,5 12,5 40,0 40,0 80,0 ≥ 1,5 3,0 3,0 6,0 6,0 12,5 12,5 50,0 > 1,5 6.3 6.3 80,0 > 1,6 12,5 12,5 30,0 30,0 40,0 40,0 60,0 > 2,5 4,0 4,0 12,5 12,5 40,0 40,0 60,0 ≥ 1,5 3,0 3,0 6,0 6,0 12,5 12,5 50,0 ≥ 1,5 3,0 3,0 6,0 6,0 12,5 12,5 80,0 ≥ 1,5 3,0 3,0 6,0 6,0 12,5 ≥ 1,5 3,0 3,0 6,0 6,0 12,5 ≥ 1,5 3,0 3,0 6,0 6,0 12,5 ≥ 1,5 3,0 3,0 6,0 6,0 12,5 Rm Mpa Min. 275 275 270 270 270 275 275 270 305 305 305 305 285 305 240 240 240 240 250 240 240 275 275 275 275 290 285 315 315 305 285 330 315 305 285 215 215 215 215 190 190 190 190 220 220 220 240 240 240 210 210 210 230 230 230 Max. 350 350 345 345 345 385 310 310 310 310 365 360 405 405 385 370 275 275 275 275 240 240 240 240 270 270 270 280 280 280 260 260 260 280 280 280 Rp0,2 Mpa Min. Max. 125 125 115 115 115 125 125 115 215 215 215 215 200 215 100 100 100 100 105 105 100 195 195 195 195 130 205 125 205 230 230 215 200 235 230 215 200 85 85 85 85 80 80 80 80 130 130 130 160 160 160 130 130 130 150 150 150 Elongation, min. % A50 A 13 15 16 15 14 12 10 10 8 10 12 10 10 10 13 15 17 16 8 9 12 8 9 10 9 16 16 14 10 10 10 10 10 12 10 10 15 17 18 16 16 18 18 17 10 11 10 7 8 10 7 10 12 6 7 9 Bend radius 180° 1,5 t 90° 1,0 t 1,5 t 2,5 t 3,0 t 2,0 t 2,5 t 4,0 t 1,0 t 1,5 t 2,0 t 2,5 t 1,0 t 1,5 t 2,5 t 2,0 t 2,5 t 3,5 t 2,5 t 4,0 t 4,0 t 1,0 t 1,0 t 1,5 t 2,5 t 1,0 t 1,0 t 1,0 t 1,0 t 2,0 t 2,0 t 1,5 t 1,5 t 2,5 t 2,0 t 2,5 t 3,0 t 1,5 t 1,5 t 2,5 t 2,0 t 2,5 t 3,0 t 2,5 t 1,5 t 2,0 t Hardness HBW (1) 75 75 75 75 73 75 75 73 89 89 89 89 89 89 65 65 65 65 69 65 65 81 81 81 81 80 80 90 90 90 85 90 90 85 85 58 58 58 58 52 52 52 52 63 63 63 70 70 70 61 61 61 67 67 67 Chemical Composition Alloy % Si Fe Cu Mn Mg Cr Zn Ti 5083 Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. 0.40 0.40 0.25 0.50 0.40 0.25 0.40 0.50 0.40 0.50 0.40 0.40 0.10 0.10 0.10 0.10 0.10 0.10 0.40 1.00 0.20 0.70 0.50 1.00 0.50 0.50 0.10 4.00 4.90 3.50 4.50 4.70 5.50 3.10 3.90 2.60 3.60 2.20 2.80 0.05 0.25 0.05 0.25 0.05 0.20 0.25 0.30 0.15 0.35 0.25 0.25 0.25 0.20 0.20 0.10 0.15 0.15 0.20 0.20 0.15 - 5086 5456 5154A 5754 5052 Others (%) each total 0.05 0.15 0.05 0.15 0.05 0.15 0.05 0.15 0.05 0.15 0.05 0.15 Reference EN 573-3 Rolled Products Alloy 5083 Characteristics Typical Uses Tempers Shipyard sheet and plate, naval and fast Strongest alloy, with excellent resistance to ship hulls, yacht hulls, LNG storage tanks, corrosion, highly suitable for welding. chemical equipment, welded superstructures (high strength), pressure vessels. 0 H111 H112 H116 H321 5083 H128 Strong thermally stable alloy with highest resistance to corrosion. Shipyard sheet and plate, naval and fast ship hulls, yacht hulls, LNG storage tanks, chemical equipment, welded superstructures (high strength), pressure vessels. H128 5086 High strength with excellent resistance to corrosion in marine environment. Good workability and weldability. Shipyard sheet and plate, shipping drums, support structures, welded structures, bulkheads, patrol and work boat hulls. 0 H111 H116 H321 5154A Very good corrosion resistance. Good weldability and formability. Medium-high strength (higher than 5754). High fatigue strength. Good anodizing properties. Welded structure, storage tanks, pressure vessels, tanks, ship masts. 0 H111 5456 Superior alloy, with excellent resistance to corrosion, highly suitable for welding. Shipyard sheet and plate, naval and fast ship hulls, yacht hulls, welded superstructures (highest strength). 5754 5052 Superior corrosion resistance at elevated temperatures, high strengths, good workability and weldability. Applications with prolonged temperatures higher than 66 ºC. Welded structures, separators. 0 H116 H321 0 H111 H32 H34 Dimensions The dimensional limits of the products which can be supplied depend upon alloys and tempers. In the following table the absolute limits are given for indication only. Product name Cold rolled sheets Hot rolled plates Thickness (mm) Min 3,0 8,0 Max 8,0 60,0 Width (mm) Min 980 900 Max 2500 2020 Length (mm) Min 1000 1000 Max 15000 12000 Dimensional Tolerances The allowed dimensional tolerances are in compliance with the limits provided by the applicable required standards (i.e., EN 485-3, EN 485-4, ANSI H35.2). Other sizes, thickness and tighter tolerances on request. Typical Physical Properties Alloy 5083 5086 5456 5154A 5754 5052 Density Average Coefficient of Thermal Expansion (20÷100 ºC) 2.66 x 103 kg/m3 2.67 x 103 kg/m3 2.66 x 103 kg/m3 2.68 x 103 kg/m3 2.68 x 103 kg/m3 2.68 x 103 kg/m3 23.8 x 10-6 per ºC 23.8 x 10-6 per ºC 23.9 x 10-6 per ºC 23.8 x 10-6 per ºC 23.7 x 10-6 per ºC 23.8 x 10-6 per ºC 580÷640 ºC 585÷640 ºC 570÷640 ºC 595÷645 ºC 595÷645 ºC 605÷650 ºC Modulus of Elasticity 117 W/m ºC (at 25 ºC) 71 Gpa 126 W/m ºC (at 25 ºC) 71 Gpa 117 W/m ºC (at 25 ºC) 71 Gpa 129 W/m ºC (at 25 ºC) 70.5 Gpa 132 W/m ºC (at 25 ºC) 70.5 Gpa 138 W/m ºC (at 25 ºC) 70.5 Gpa Poisson’s ratio 0.33 0.33 0.33 0.33 0.33 0.33 Electrolytic Solution Potential -0.91 V* -0.88 V* -0.87 V* -0.86 V* -0.86 V* -0.86 V* Approximate Melting Range Thermal Conductivity *Versus 0.1 N calomel electrode in an aqueous solution containing 53 g NaCl plus 3 g H2O per litre. Typical Technological Properties Welding capability Alcoa Nautic-Al marine aluminium can be welded by TIG, MIG, Electron Beam or Spot welding. The mechanical properties in the heat-affected zone after welding* for marine sheet and plate alloys are summarized below: Alloy 5083 5086 5456 5154A 5754 5052 * Butt joint welding. 5356 or 5183 filler. Temper 0 H111 H112 H116 H321 H128 0 H111 H112 H116 H321 0 H116 H321 0 H111 0 H111 H32 H34 0 H111 Thickness (mm) Rm (MPa) Rp,02 (MPa) All ≥ 275 ≥ 125 All ≥ 240 ≥ 100 All ≥ 285 ≥ 125 All ≥ 215 ≥ 85 All ≥ 190 ≥ 80 All ≥ 165 ≥ 65 Certifications When materials are specified for marine use, and when applicable, they are supplied according to ASTM B928, ASTM B209 standards or upon request to ABS, Bureau Veritas, Det Norske Veritas, Lloyd’s Register, RINA and other rules. Alloy Class designation Certification body 5083 American Bureau of Shipping ABS 5086 Bureau Veritas BV 5083 NV-5052 NV-5754 Det Norske VeritasGermanischer Lloyd DNV-GL NV-5154A NV-5083 GL AW-5083 NV-5086 Lloyds Register LR Registro Italiano Navale RINA Korean Register KR 5083 5083 5083P 5086P Nippon Kaiji Kyokai NKK 5083P 5083 China Classification Society 5083 Temper 0 H112 H116 H321 H128 H111 0 H112 H116 H321 H111 0 H111 H112 H116 H321 H128 H32 H34 0 H111 H32 H34 0 H111 0 H111 H112 H116 H321 H128 0 H116 0 H111 H112 H321 H116 H128 0 H111 H321 H116 H128 0 H112 H116 H321 H128 H116 0 H112 H116 H321 H111 H32 H128 O H111 H112 H116 H321 Max approved Thickness (*) Material specification Certification procedure 60 mm ABS Rules ABS Quality Assurance Program 8 mm 60 mm ASTM B928 EN 485-2 50 mm Witness test ABS Rules ABS Quality Assurance Program EN 485-2 Witness test According to EN10204 3.2 + ABS Cover BV Mode I According to EN10204 3.2 + BV Cover DNV Manufacturer Survey Arrangement Witness test According to EN10204 3.2 + GL Certificate Material Quality Scheme According to EN10204 3.2 Alternative Testing Scheme (COLALT) According to EN10204 3.2 Witness test KR Certificate NKK Approval 8 mm EN 485-2 EN 485-2 (≤ 40 mm) ASTM B209 (> 40 mm) ASTM B928 According to EN10204 3.2 + NKK Certificate 60 mm CCS Rules CCS Approval CCS Certificate 60 mm BV Rules 8 mm ASTM B928 10 mm 50 mm 10 mm 10 mm DNV-GL Rules 60 mm 8 mm ASTM B928 50 mm DNV Rules 60 mm 60 mm 40 mm 8 mm 40 mm 60 mm 8 mm 60 mm LR Rules ASTM B928 RINA Rules ASTM B928 KR Rules 8 mm 50 mm NKK Rules 60 mm (*) Minimum thickness 3 mm Global Rolled Products Alcoa GmbH Heinrichstrasse 24 40239 Düsseldorf Germany Technical specifications are correct at time of printing. March 2016. Inspection document T: +49 211 47 111 0 F: +49 211 47 111 90 W:www.alcoa.com/grp www.alcoa.com/nautical