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free-machining

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Published: 30 June 2023
Fig. 7.13 Free-machining alloys and products. (a) Stringy machining chips in turning of aluminum. (b) Aluminum screws, nuts, and bolts produced from free-machining alloys such as 6262 or 2011-T6 More
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Published: 30 September 2023
Figure 13.7: Apparent mean coefficient of friction in cutting of free-machining steel (HSS tool; dry; f = 0.15 mm). More
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Published: 01 March 2002
Fig. 8.5 As-polished specimen of free-machining AISI/SAE 11L44 steel showing manganese sulfide inclusions with metallic lead attached. 500× More
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Published: 01 March 2002
Fig. 8.34 Free-machining AISI/SAE 1213 steel bar showing ferrite plus pearlite banding, manganese sulfide inclusions, and a ferrite matrix. 4% picral followed by 2% nital etch. 320× More
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Published: 01 August 1999
Fig. 5.19 (Part 1) Free-machining low-carbon (0.1% C) resulfurized steel bar. (a) to (d) 0.07C-0.002Si-1.12Mn-0.26S-0.066P (wt%). Hot-rolled bar. 105 HV. (a) Longitudinal section. Picral. 100×. (b) Transverse section. Picral. 100×. (c) Longitudinal section. Arrows indicated eutectic More
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Published: 01 August 1999
Fig. 5.20 (Part 1) Free-machining low-carbon (0.1% C) steel bar. (a) and (b) Resulfurized cold-drawn bar. 0.12C-0.01 Si-1.22Mn-0.21 S-0.02P (wt%). (a) Central regions. 170 HV. Picral. 100×. (b) Surface regions. 170 HV. Picral. 100×. (c) and (d) Resulfurized. 0.13C-0.01Si-0.98Mn More
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Published: 01 March 2002
Fig. 1.13 Micrograph of AISI 430F free-machining ferritic stainless steel showing a microstructure consisting of ferrite and globular manganese sulfides (gray constituent). Etched in three parts glycerol, two parts HCl, and one part HNO 3 . 750× More
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Published: 01 March 2006
Fig. 2 Manganese sulfide inclusions in resulfurized free-machining steel. Unetched (as-polished). Original magnification: 500×. Source: Ref 6 More
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Published: 01 December 2001
Fig. 37 Unit power consumption for free-machining and standard grades of carbon and alloy steels as a function of hardness More
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Published: 31 December 2020
Fig. 5 Manganese sulfide inclusions in resulfurized free-machining steel. Unetched (as-polished). Original magnification 500×. Source: Ref 9 More
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Published: 01 December 1984
Figure 2-28 As-polished free-machining steel treated with bismuth, 150 ×. (Courtesy of V.E. McGraw , Bethlehem Steel Corp.) More
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Published: 01 December 2006
Fig. 2.77 Bar, shaped bar, and turned components in free machining brass. Source: Wieland-Werke AG More
Series: ASM Technical Books
Publisher: ASM International
Published: 31 December 2020
DOI: 10.31399/asm.tb.phtbp.t59310095
EISBN: 978-1-62708-326-3
..., free-machining carbon steels, low-alloy manganese steels, low-alloy molybdenum steels, low-alloy chromium-molybdenum steels, low-alloy nickel-chromium-molybdenum steels, low-alloy nickel-molybdenum steels, low-alloy chromium steels, and low-alloy silicon-manganese steels. The chapter provides...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.pht2.t51440097
EISBN: 978-1-62708-262-4
... treated steels) are also discussed, as well as those of free-machining carbon steels. Detailed heat treating procedures are presented for a representative group of carbon steels. The processes involved in tempering and austempering of carbon steels are also discussed. carbon steel free-machining...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340143
EISBN: 978-1-62708-427-7
... the general types of aluminum extrusion alloys. An overview of free-machining alloys and products, and weldable 6xxx and 7xxx high-strength structural alloys is also provided. aluminum alloys aluminum extrusion cold extrusion free-machining alloys hot extrusion wire drawing wire production...
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Published: 01 December 1984
Figure 2-27 Example of inclusion retention in steels polished automatically as described in text. Top, oxides in as-cast (left) and wrought (right, silicates and sulfides) samples; 240 ×. Bottom, sulfides in as-cast (left) and wrought (right) free-machining steel samples; 120 ×. More
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Published: 01 December 1984
Figure 1-40 Wragge’s lead print method (left) and the lead sweat test (center) were used to reveal the lead distribution in this free-machining steel billet disc. A few small spots of lead segregation were detected (right), otherwise the lead distribution was quite uniform. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000167
EISBN: 978-1-62708-312-6
... to loss of tool life and process efficiency. Several grades of wrought stainless steels are available in their free-machining versions. These typically contain a small amount of either sulfur or selenium. Improved machinability is attributed to two mechanisms: the additives coat and lubricate the tool tip...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2006
DOI: 10.31399/asm.tb.cw.t51820115
EISBN: 978-1-62708-339-3
... contains approximately 12 wt% Cr and 0.1% C to provide strength. A free-machining version of type 410 is type 416, which contains higher amounts of sulfur (about 0.15 to 0.30% S). Type 416Se is the free-machining variant containing selenium. Type 403 contains less silicon than type 410 and is used...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740213
EISBN: 978-1-62708-308-9
... reduce machinability. Metal-matrix composites are generally less machinable than their base-matrix metal. Similarly, powder metals are less machinable than cast or wrought alloys of equivalent chemistry. Most material classes include “free-machining” alloys, which contain alloy additions...