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Reading, PA, United States

Carpenter Technology Corporation is an international developer, manufacturer and distributor of cast wrought and powder metallurgy specialty alloys/metals including superalloys, ultra-high strength steels, and stainless steel, as well as titanium alloys in a range of product forms. Headquartered in Reading, Pennsylvania, Carpenter Technology maintains manufacturing and distribution operations throughout the United States, Mexico, Europe and Asia. Its most recent facility is a service center in China. In addition to the specialty alloys operation based in Reading, Carpenter acquired Dynamet Incorporated, Washington, Pa., a titanium alloy producer, and placed its tool steel and powder metallurgy business in the Carpenter Powder Products unit during the 1990s. In January 2011, the company announced the acquisition of Houston-based Amega West Services for $54 million; the deal expands Carpenter's business in the oil and gas drilling market .About 35% of revenue comes from business abroad, over half of that from Europe , 22% from the rest of North America , Asia pacific 17% with the rest of the world accounting for the other 5%. For the fiscal year ended June 2010 company net sales amounted to $1.2 billion 54% of which came from the sale of special alloy products , 33% from stainless steels , 9% from titanium products and 4% from other types . The aerospace and industrial industries are by far the largest end users of Carpenter Technology; their relative importance to business was unchanged between 2009 and 2010. Among other end users the consumer endustry was most important followed by medical and automotive . Wikipedia.

Jayaraman T.V.,Carpenter Technology Corporation
Journal of Electronic Materials | Year: 2015

Fe-Co-based soft-magnetic materials form an important class of high-induction alloys that are widely used in energy conversion applications in the aerospace industry. In this work, the effect of processing—cut method [stamping and wire-electrical discharge machining (EDM)] and annealing (cut unannealed, cut followed by annealing, and annealing followed by cut)—on the magnetic properties of the HIPERCO® 50 Alloy laminates was investigated. A cold-rolled ∼0.006-in (∼150-μm)-thick strip of HIPERCO® 50 Alloy was cut into ring laminations and final-annealed in dry hydrogen. Scanning electron microscopy (SEM) and x-ray diffraction analysis indicated the presence of extraneous Cu on the cut edge of the wire-EDM cut ring laminates, along with the expected Fe-Co phase for HIPERCO® 50 alloy. SEM micrographs of the cut edge showed the typical sheared surface and irregular surface for stamped and wire-EDM cut ring laminates respectively. The rings that were stamped followed by annealing (STfA) showed superior direct current (DC) and alternating current (AC) magnetic properties. The presence of Cu (diamagnetic) in wire-EDM cut rings adversely affects induction (B) and core loss (PT), compared to the stamped rings for corresponding annealing conditions. The difference in the DC magnetic properties between the ring laminates STfA and annealed followed by stamping (AfST) was significantly large compared to that between the ring laminates that were wire-EDM cut followed by annealing (EDfA) and annealing followed by wire-EDM (AfED). This suggests that, for certain applications where the differences in DC magnetic properties between EDfA and AfED are acceptable, the AfED rings may be put to application/service after the wire-EDM cut operation, i.e. wire-EDM may be performed after ‘final-annealing’. However, the AC properties between EDfA and AfED rings were significantly different, hence for AC applications, the ‘final annealing’, post-cutting, is critical irrespective of the cut method. Wire-EDM incorporates extraneous Cu on the cut edge of the HIPERCO® 50 Alloy laminates and deteriorates its magnetic properties. An intermediate grinding step after wire-EDM, for the removal of Cu, could probably improve the magnetic properties. However, if the extraneous Cu and the accompanied deterioration in magnetic properties is acceptable for certain applications, then the wire-EDM provides the flexibility to have the ‘final-annealing’ of HIPERCO® 50 Alloy laminates either before or after wire-EDM. © 2015 The Minerals, Metals & Materials Society

Manigandan K.,University of Akron | Srivatsan T.S.,University of Akron | Quick T.,University of Akron | Sastry S.,University of Akron | Schmidt M.L.,Carpenter Technology Corporation
Materials and Design | Year: 2014

The results of a recent study aimed at understanding the conjoint influence of load ratio and microstructure on the high cycle fatigue properties and resultant fracture behavior of two high strength alloy steels is presented and discussed. Both the chosen alloy steels, i.e., AerMet® 100 and PremoMet™ 290 have much better strength and ductility properties to offer in comparison with the other competing high strength steels having near similar chemical composition. Test specimens were precision machined from the as-provided stock of each steel. The machined specimens were deformed in both uniaxial tension and cyclic fatigue under conditions of stress control. The test specimens of each alloy steel were cyclically deformed over a range of maximum stress at two different load ratios and the number of cycles to failure recorded. The specific influence of load ratio on cyclic fatigue life is presented and discussed keeping in mind the maximum stress used during cyclic deformation. The fatigue fracture surfaces were examined in a scanning electron microscope to establish the macroscopic mode and to concurrently characterize the intrinsic features on the fracture surface. The conjoint influence of nature of loading, maximum stress and microstructure on cyclic fatigue life is discussed. © 2013 Elsevier Ltd.

Hu J.-M.,Tsinghua University | Hu J.-M.,Pennsylvania State University | Sheng G.,Pennsylvania State University | Zhang J.X.,Pennsylvania State University | And 3 more authors.
Applied Physics Letters | Year: 2011

The strain-induced magnetic domain switching in epitaxial CoFe2 O4 (CFO) thin films was studied using phase-field method. In particular, we investigated the domain switching from an initial in-plane direction to out-of-plane under the action of in-plane elastic strains. An abrupt switching feature is observed for a single-domain film while the switching of a multidomain CFO thin film is gradual. Typical magnetic domain structures as a result of the biaxial isotropic in-plane strains are presented. © 2011 American Institute of Physics.

Yanke J.,Purdue University | Yanke J.,Carpenter Technology Corporation | Fezi K.,Purdue University | Trice R.W.,Purdue University | Krane M.J.M.,Purdue University
Numerical Heat Transfer; Part A: Applications | Year: 2015

A modified volume-of-fluid method is implemented in a fixed-grid, finite-volume model simulating transport phenomena, solidification, and electromagnetics. The VOF model agrees well with published results, and the complete model is used to investigate process variations in the electroslag remelting process, in which liquid metal is melted from a consumable electrode immersed in an electrically resistive slag. The molten metal sinks through the slag cap floating on the liquid metal pool while a slag skin freezes to the mold. Here a VOF tracks slag skin formation and its effects on melt rate with different current levels and ingot diameters. © 2015 Taylor and Francis Group, LLC.

Carpenter Technology Corporation | Date: 2011-08-10

A filter well suited for paint arrestor usage having a monolithic high loft manmade fiber body with a convoluted flow contact surface. The filter is preferably formed by a convoluter as in one with a roller set and blade cutter to form mirror image fiber filter sheets from a received fiber batt. Provided is a well mixed proper fiber blend, such as one having a set of fibers made of a majority of course fibers joined by way of thermal bonding fibers which facilitate, during convoluting, formation of a crisp cut and high integrity three dimensional surface, as in one of rows of peaks separated by valleys. The projection/recess arrangement over the flow contact surface as well as the thickness and relative projection-to-base dimensions are arranged to provide a high paint holding capacity without too fast a load up of, for example, paint particles and while avoiding too great of a pressure drop within that load up time.

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