AMETEK's Specialty Metal Products Division has been a leader in developing the technology of roll bonding dissimilar metals for more than three decades. The advantage of clad materials is that the end product combines the superior properties of each metal — strength, corrosion resistance, lightweight, lower cost, and thermal and electric conductivity — to produce a material superior to that of any of the individual metals taken alone.
Clad metals produced by our roll bond technology combine two or more metals into a single sheet or plate that can be cut, welded or formed into a finished part ranging from chemical processing chambers and pressure vessels to small applications and clad pipe. We specialize in cladding stainless to carbon steel.
Because of the properties offered by clad metals, and the wide variety of cladding and backing materials available today, these metals can be combined to make custom materials for a wide range of demanding industries, including health, chemical and petroleum processing, paper and pulp, food and food processing.
If the problem is unique, then the solution could well be a clad metal. In all cases, clad metals provide combinations of properties and advantages not available in monolithic metals.
AMETEK clad materials are manufactured by roll bonding a backing with a specialty metal to produce a metallurgically bonded clad. Many metals can be combined through this technique to provide a custom metal with the specific properties desired by the designer.
Our clad materials are available in standard widths to 120", lengths to 480", 1 and thicknesses ranging from 3/16 inch to 1". Cladding on the steel backing can be supplied in a range of thicknesses from 5 to 40 percent of the overall material thickness.
The Thermal Conductivity advantages of Roll Bonded Clad Plate are:
- Thermal Conductivity of Carbon Steel (25°C) Average
Value 46 W/m
- Thermal Conductivity of our SS/LCS Clad Plate (25°C) Average
Value 34 W/m
- Thermal Conductivity of 400L Series Steel (25°C) Average
Value 24 W/m
- Thermal Conductivity of 300L Series Steel (25°C) Average
Value 16 W/m
Improved conductivity over solid Stainless – while retaining the cleanliness and appearance of Stainless Steel.
Our primary composite material is stainless clad steel, however our metallurgists are always available to assist you in developing custom product specifications. We can further process clad sheet and plate to meet specifications for close dimensional and flatness tolerances, glass beading or sand blasting one or both sides, cutting to circles or special shapes.
Roll bonding is achieved by processing a specially prepared "sandwich" (layers of backing and cladding materials) through a conventional plate hot rolling mill that reduces the thickness and metallurgically bonds the backing steel to the clad material. Parting compound is used between each clad pack before it is welded and then roll bonded to yield two separate clad plates.
After cutting to finish size, the bonded plates are cleaned by blasting with an abrasive mixed with glass beads to obtain a clean, relatively bright surface, both top and bottom, if desired.
Clad plate can be fabricated into different shapes, which allows designers the freedom to produce custom products for a wide range of applications.
Forming: Clad materials can be cut and formed by most shop operations, which include shearing, plasma cutting, drawing, bending, hot forming, machining, drilling and punching.
Welding: Fusing of clad materials is usually done by first welding the backing material using appropriate filler material and then welding the clad side with a welding electrode or filler metal appropriate to that surface.
Quality Control, Testing
Generally, clad plate is produced to meet or exceed either ASME A-264 or ASME A-265 codes. To meet these specifications, AMETEK routinely performs tensile tests, shear tests, hardness, bend tests and impact tests (Charpy V-Notch) on modern testing equipment. Other services, as specified by the customer, are also available such as ultrasonic testing, thermal treatment and saw cutting.
AMETEK's total quality control begins with our selection of high quality raw materials and follows through to an on-time delivery of the finished product to our customers.
In order to meet relatively short delivery times, AMETEK maintains an inventory of A-285 Grade C and A-516 Grade 70 carbon steel, and 304L and 316L stainless steel.
- Provide a raw material inventory and Just-In-Time stocking programs for high-volume users.
- Supply small quantities for specialized requirements, and some stock plates that are available upon request.
AMETEK Specialties Include:
- Stainless clad carbon steel
Clad Plate Capabilities:
- Thickness from 3/16" (4.8mm) to 1" (25.4mm)
- Widths to 120" (3,048mm)
- Lengths to 480" (12,000mm)
- Surface Grinding (#3 & #4 finish)
- Normalizing & Solution Anneal
- Ultrasonic Testing to SA 578
- % Clad: 5% to 40%
- Weight/Plate: 8,000 lbs. max. (finished)
View our Clad Plate Brochure
*Trademarks of Inco Alloys International, Inc.
† Trademarks of Cartech Inc.