Silicon Iron B FM Bar Stock Assortment 6 Round Bars See Description

$20.09 Buy It Now or Best Offer
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Seller Store steeldawg9061
(18135) 99.9%,

Location: Sterling Heights, Michigan
Ships to: US,
Item: 283707086114

Return shipping will be paid by:Seller
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Oakland Steel Inc.:Oakland Steel Inc.
Steel Mill:Carpenter Technology Corporation
Rod Outside Diameter:.550 in, .380 in, .263 in
Shape:Round
Unit Type:ft
Metal/Alloy Type:Alloy Steel,Steel,Silicon Iron Steel
Grade:Silicon Iron Grade B
Specification:ASTM A867 Alloy 2
MPN:Does Not Apply
Country/Region of Manufacture:United States
Rod Length:12 in
Modified Item:No

Silicon Iron B FM Bar Stock Assortment 6 Round Bars See Description 2-.550 RD Silicon core Iron x 12″2-.380 RD Silicon core Iron x 12″2-.263 RD Silicon core Iron x 12″ used for : solenoid switches, armatures, pole pieces, relays, etc.Composition (Nominal)0.03 C, 0.40 Mn, 2.50 Si, 0.12 P, Bal. FeImproved machining characteristics over “B” grade are being obtained by using this modified free-machining alloy with no sacrifice in magnetic properties. Specifications: ASTM A867 Alloy 2F DescriptionCarTech Silicon Core Iron “B-FM” is melted in electric arc furnaces to exacting chemical specifications and carefully controlled through all manufacturing processes to produce a fine-grain, uniform quality magnetic core iron. This alloy exhibits improved machining characteristics over CarTech Silicon Core Iron “B”. Improvements in machinability of up to 40% have been realized on automatic screw machines. In addition, CarTech Silicon Core Iron “B-FM” displays lower residual magnetism, higher electrical resistivity, and is more magnetically soft when heat treated under identical conditions than CarTech Silicon Core Iron “B”. The magnetic characteristics and cold working/cold forming properties of CarTech Silicon Core Iron “B-FM” are in the same range as CarTech Silicon Core Iron “B”. ApplicationsCarTech Silicon Core Iron “B-FM” has been used in solenoid switches, armatures, pole pieces, relays, etc. This alloy should be considered for use in applications requiring a magnetic core component superior to mild steel, magnetic iron (99.2% Fe minimum) and a 1% silicon core iron. PropertiesPhysical PropertiesSpecific Gravity–7.69 Density–0.2760lb/in³ Mean CTE77 to 750°F7.35x 10-6 in/in/°F Electrical Resistivity70°F240.7ohm-cir-mil/ft Curie Temperature–1470°F Magnetic PropertiesMagnetic properties are determined in accordance with ASTM A341. Diameters less than 1″ (25.4 mm) are determined on a 10″ (25.4 cm) long specimen on a Fahy Permeameter. Diameters 1″ (25.4 mm) are larger are evaluated on solid ring specimens machined from a disc. Specimens are annealed at 1550°F (843°C) two hours in a wet hydrogen atmosphere and furnace cooled at a rate of 100°F (55.6°C) per hour to 1000°F (538°C) and any cooling rate thereafter. DC HysteresisNormal DC Magnetization CurvesSaturation Flux Density–20600.0G Coercivity–0.700Oe Maximum Permeability–5000.00 Residual Induction–5500G Treatment for Final Closed Pack Anneal–1550°F Typical Mechanical PropertiesTypical Mechanical Properties Heat TreatmentItems as supplied from the mill are not in the most magnetic soft condition, nor are they supplied to magnetic property requirements. As supplied magnetic property requirements must be approved by the mill. Finish fabricated parts must be heat treated to achieve soft magnetic characteristics. Suggested heat treating atmosphere is a wet hydrogen atmosphere in the temperature range of 1550/1600°F (843/871°C), two to four hours at temperature and cooled at a rate of 100/200°F (38/93°C) per hour to 1000°F (538°C) and any rate thereafter. Other heat treating atmospheres can be employed, such as nitrogen-hydrogen combinations, vacuum, exothermication and inert atmosphere retort. Resulting magnetic characteristics will not be as good as the wet hydrogen atmosphere, which provides the best degree of decarburization. Other heat treatment temperatures in the range of 1350°F (732°C) to 1900°F (1038°C) can be employed to achieve certain advantages such as brazing and fine grain size as required by end application. A sacrifice in certain magnetic characteristics will be realized. A dry atmosphere must be employed at 1750°F (954 °C) and above. WorkabilityCold WorkingCold working and cold forming properties are of the same order as the non-free-machining Silicon Core Iron “B” (2.5% silicon core iron). Only thin machine sections (less than 1/16″ [1.60 mm]) thick can be formed. MachinabilityFollowing are typical feeds and speeds for Silicon Core Iron “B-FM”. Machinability TablesAdditional Machinability NotesFigures used for all metal removal operations covered are average. On certain work, the nature of the part may require adjustment of speeds and feeds. Each job has to be adjusted for best production results with optimum tool life. Speeds and feeds should be increased or decreased in small steps. Other InformationApplicable SpecificationsASTM A867 Alloy 2F Forms ManufacturedBar – Many forms and conditions (Note: cold drawn bar available in diameters 1/2″ [12.7 mm] or less) Bar-RoundsBilletStrip Technical ArticlesA Designer’s Manual On Specialty Alloys For Critical Automotive ComponentsA Simplified Method of Selecting Soft Magnetic AlloysDevelopment of Chrome Core® 13FM Stainless – A Soft Magnetic Stainless SteelSoft Magnetic Alloys with Improved Corrosion ResistanceSoft Magnetic Ferritic Stainless Steels for Electromechanical Devices Unless otherwise specified, registered trademarks are property ofCRS Holdings Inc., a subsidiary of Carpenter Technology Corporation.Copyright 2019 CRS Holdings Inc. All rights reserved.

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