0800 789 987 kormax.co.nz PRODUCT CATALOGUE Delivered on-time. To the right spec. Every time. 1 0800 789 987 kormax.co.nz Kiwi to the core since 1947 Our business is based on one simple question. About Us How can Bronze LG2 Bronze (Leaded Gunmetal) 11/13 954 Aluminium Bronze 15/17 863 Manganese Bronze 18 we help? AB2 Aluminium Bronze 19/20 PB1 Phosphor Bronze 21/22 Imperial Bronze Bushes 23/25 Metric Bronze Bushes 26 Sintered Bronze Products 27/28 Brass 385 Brass 31/32 464 Naval Brass (Tobin Bronze) 33 Copper 110 Copper 37/38 Cast Iron & Silver Steel 4E & 3D Cast Iron 41 Silver Steel 43/44 Aluminium 6061 Aluminium 47/48 Technical Information Additional Info 7/8 Typical Mechanical Properties (Bronze & Brass) 34 0800 789 987 kormax.co.nz Free cutting to any length. Next-day delivery nationwide. 3 1 0800 789 987 kormax.co.nz Kiwi to the core since 1947 Late 1950’s The next generation starts work at the foundry, gaining his apprenticeship in moulding. 1947 After perfecting the castings in the garage, this is where it all began. 2012 1980 Milson Metals changes Milson Foundry Ltd buys the first name to Milsons (2012) Ltd and moves to their current Bobcat in New Zealand. After 17,000m2 warehouse in many years of faithful service this Kaimanawa Street. machine was bought back by the Bobcat dealer for historical value. Late 1980’s Milson Metals starts into the fastening industry by securing the Unbrako agency 2004 for New Zealand. Ajax (large wholesaler) Late 1980’s The old coke fired leaves the New Zealand cupola furnace is fastening industry. decommissioned and replaced with a state of the art electric 1953 1976 furnace. E.N. Davis Ltd E.N. Davis Ltd becomes Mid 1970’s a legal entity making changes name to 2016 E.N. Davis Ltd 1981 foundry castings. Milson Foundry Ltd. 1995 Kormax brand is created buys metals such Milson Metals Milson Metals starts to represent the metals as bronze and brass brand born. to import its own key and engineering supplies to sell alongside the steel, grease nipples, side of the business. foundry products. silver steel etc. 1995 1951 1964 1976 1985 Team New Zealand 2011 ANZUS treaty is signed Cook Strait power The metric system of The Rainbow Warrior wins America’s Cup. All Blacks win between United States, cables are laid. weights and measures is sunk by French Rugby World Cup Australia and New Zealand. is introduced. agents in Auckland. against France. 1990 Commonwealth Games 2016 held in Auckland. New Zealand flags it. 1953 2015 Edmund Hillary and 2010-2011 All Blacks win Rugby World Cup against Australia, the Sherpa Tenzing are first Earthquakes across 1979 only team ever to win the to conquer Mt Everest. Canterbury cause 1966 Air New Zealand Flight tournament twice in a row. NZ labour force 901 crashes on Mount widespread damage reaches one million. Erebus. 257 people die. and 184 deaths. 2 3 4 0800 789 987 kormax.co.nz About us After 70 years in the metal business you learn a thing or two. Kormax has the largest stock range of specialty metals in New Zealand supported by strong technical know-how. Our customers demand product delivered on time, to the right specification and dimension, every time, to avoid costly downtime. That’s why Kormax is a trusted supplier of engineering supplies to the manufacturing, hydro, forestry and marine sectors in New Zealand. We pay attention to detail at every level of our business. A strict code of continual improvement, from sourcing stock to taking orders, to getting the product to the customer with speed and accuracy underpins our service to you. Kormax is a division of Milsons and is 100% New Zealand owned and operated. 5 6 0800 789 987 kormax.co.nz QUALITY THROUGHOUT ALL ASPECTS OF MANUFACTURE Principle of the Extrusion Process (Brass, Copper and Aluminium) The extrusion process uses continuous cast billet which has had Manufactured to ISO 9001 the outside diameter machined to remove oxides and other casting All Kormax bronze products are manufactured using continuous or centrifugal casting methods. Bronze produced marks. These billets are pre-heated to approximately by either of these methods has significant advantages over sand-cast material. Some of these advantages are: 650-700°C before loading into the extrusion press. Once heated, • Increased tensile strength and wearing qualities – by up to 35% the billet is positioned on top of the die and the extrusion press • Higher hardness and ductility container lowered down over it. At this point 1000 tonnes of pressure is applied by the extrusion press causing the metal to be • Freedom from porosity extruded through the die. The size and shape of the die determines • Fine grain structure the size and shape of the extruded rod. • Improved machining properties and longer tool life • Less ‘clean-up’ allowance needed for machining Broad Range of Lengths Available All Kormax brass, copper and aluminium products are extruded. This manufacturing process is also well known for Kormax clients value the flexibility offered by our user-friendly cutting service. Meeting customer specific the high quality material produced. A brief explanation of these manufacturing processes is given below. requirements is our specialty, that’s why we cut material to suit almost any length requirement – at no extra cost. The following table gives information about the standard lengths that our products are manufactured in. Material Standard Bar Length Tolerance MANUFACTURING PROCESSES LG2 Leaded Gunmetal 3100mm (1) +/- 100mm 954 Aluminium Bronze 3700mm (1) +/- 100mm Principle of Continuous Casting PB1 Phosphor Bronze 3100mm (1) +/- 100mm (Bronze up to 12” diameter, all Cast Iron) AB2 Aluminium Bronze 3700mm (1) +/- 100mm Molten metal is poured from a furnace into a crucible which is 385 Brass 3600mm (2) +/- 10mm cemented to the neck of a graphite die. The lower half of the die 464 Naval Brass (Tobin Bronze) 3600mm (2) +/- 10mm is water cooled so that the metal then sets in this section and is Copper Round 3600mm (2) +/- 10mm withdrawn through two sets of rollers. A flying saw mounted below Copper Flat and Square 4000mm (2) +/- 10mm the roller cuts the bar to the required length. Continuous cast bar Cast Iron Please enquire - has greatly improved physical properties when compared with normal sand-cast material. Because of the bottom pouring Silver Steel 1000mm +/- 1.0mm conditions and rapid cooling that the metal receives in the cooling Aluminium Please enquire - zone, inclusions are completely eliminated, grain structure is tight 1. This information applies to bronze up to 10” diameter – all larger diameters have a maximum length of 1000mm. and even, giving excellent pressure tightness qualities. 2. Large diameters may be available in full lengths, check by calling Kormax on 0800 789 987. While some applications may call for multiple long lengths of material to maximise the bar-feed capacity of a CNC Principle of Centrifugal Casting machine, others may require only a short piece for one-off repair work. Either way we’ll be able to help. (Bronze approx. 8” to 48” diameter) We also carry a wide range of LG2 and 954 product in 15” (381mm) lengths – these are particularly useful in Molten bronze is poured from a furnace into a pilot ladle which jobbing, small-run manufacture and repair type applications. They also facilitate ease of handling and shipping, and directs the stream of metal into a horizontal spinning die. This die are a practical size to hold in a lathe chuck. determines the OD of the casting produced, and the amount of molten bronze fed to the die determines the wall thickness. When the die is fully charged with the correct amount of metal it Analysis of Sample Material continues spinning for a predetermined period. On completion If you remove a worn bronze or brass component and are unable to identify what type of material it is, Kormax offers of the spinning process the die is removed, then the casting is a free metallurgical analysis service (when you purchase the replacement material from us.) withdrawn, proof machined and inspected. 7 8 0800 789 987 Bronze kormax.co.nz LG2 Bronze (Leaded Gunmetal) 11/13 954 Aluminium Bronze 15/17 863 Manganese Bronze 18 AB2 Aluminium Bronze 19/20 PB1 Phosphor Bronze 21/22 Imperial Bronze Bushes 23/25 Metric Bronze Bushes 26 Sintered Bronze Products 27/28 Bronze is the name for metal usually consisting of 80 - 95% copper with the balance made up of one or more other metals, such as tin, silicon, nickel, aluminium, iron, zinc or manganese. 3000 BC ancient man discovered that adding a small percentage of tin to copper greatly increased it’s strength, hence the beginning of the ‘Bronze Age’. Bronze is a favoured material when strength and corrosion resistance are called for. 9 10 0800 789 987 kormax.co.nz LG2 BronzeLG2 Bronze LG2 Solid Round Approx. Hollow Round Approx. Hollow Round Approx. LG2 Bronze (Leaded Gunmetal) (Diameter) Kg/Mtr (OD x ID) Kg/Mtr (OD x ID) Kg/Mtr 1/2 1.42 1 x 1/2 4.48 3-1/4 x 1-1/2 41.39 5/8 2.15 1 x 3/4 3.19 3-1/4 x 1-3/4 37.82 Overview 3/4 3.03 1-1/8 x 1/2 5.74 3-1/4 x 2 33.66 7/8 4.06 1-1/8 x 3/4 4.53 3-1/4 x 2-1/4 29.33 LG2 Bronze is one of the most commonly used grades of bronze in the New Zealand industry.