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martensitic malleable iron

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Book Chapter

Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001005
EISBN: 978-1-62708-161-0
... iron: blackheart and whiteheart. This article considers only the blackheart type and describes the metallurgical factors of malleable iron. It discusses the mechanical properties of pearlitic and martensitic malleable irons. The article provides additional information on the properties and heat...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003110
EISBN: 978-1-62708-199-3
... the metallurgical control of malleable irons with emphasis on its composition and heat treatment. The article provides information on the specifications and mechanical properties of different types of malleable irons, such as ferritic, pearlitic, and martensitic malleable irons. chemical composition ferritic...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005326
EISBN: 978-1-62708-187-0
... practices, heat treatment, microstructure, production technologies, mechanical properties, and applications of ferritic, pearlitic, and martensitic malleable irons. iron carbide ferritic malleable iron cast ferrous metal graphite martensitic malleable iron microstructure pearlitic malleable iron...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006347
EISBN: 978-1-62708-179-5
... malleable iron and discusses the chemical composition of malleable iron. A summary of mechanical properties and specifications of malleable iron castings is presented in a table. The article also reviews the mechanical properties of ferritic malleable iron and pearlitic and martensitic-pearlitic malleable...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006333
EISBN: 978-1-62708-179-5
.... It schematically illustrates the microstructure of annealed ferritic malleable iron, which is characterized by microstructures consisting of uniformly dispersed fine particles of free carbon in a matrix of ferrite or tempered martensite. The article describes the digital solidification analysis technology...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006309
EISBN: 978-1-62708-179-5
... wear resistance (martensitic malleable iron only) Malleabilizing Annealing of White Iron to Produce Malleable Iron The annealing of white iron to produce malleable iron should be done in a furnace with a controlled atmosphere of dry nitrogen, hydrogen (1.5%), and carbon monoxide (1.5...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002399
EISBN: 978-1-62708-193-1
... … … … Pearlitic malleable (60003) 80 197–255 … … … 22–35 Pearlitic malleable (70002) … … … … … 22–35 Martensitic malleable (80002) 100 241–269 … … … 22–35 White and alloy cast irons Unalloyed white 20–50 300–575 … … … 3.5–10.0 High Si (Duriron, Durichlor) 13–18 480–520...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005969
EISBN: 978-1-62708-168-9
... to 130 °F) and agitated oil, thereby developing a matrix consisting of martensite without bainite and having a hardness of 555 to 627 HB. Figure 7 shows the effects of austenitizing temperature and quenching medium on the hardness of ferritic and pearlitic malleable iron. The appropriate austenitizing...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006301
EISBN: 978-1-62708-179-5
... of graphite for the short time at temperatures above the transformation range. In contrast, the pearlitic grades of gray, ductile, and malleable irons readily form martensite when rapidly cooled from above the transformation range, because the combined carbon content of the pearlitic matrix is more rapidly...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006294
EISBN: 978-1-62708-179-5
..., including chemical composition, cooling rate, and heat treatment. The article describes some basic principles of cast iron metallurgy. It discusses the main effects of the chemical composition of ductile iron and compacted graphite (CG) iron. The composition of malleable irons must be selected in such a way...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003106
EISBN: 978-1-62708-199-3
..., malleable, compacted graphite, and white cast iron. A table shows the correspondence between commercial and microstructural classification, as well as final processing stage in obtaining common cast irons. carbon equivalence classification of cast irons compacted graphite iron ductile cast iron...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005322
EISBN: 978-1-62708-187-0
... ductility), which can be tempered (high strength and toughness). Standard or ferritic malleable iron, also called blackheart ( Fig. 4 ) (ASTM A 47, Ref 1 ), possesses a matrix of ferrite, while pearlitic malleable iron (ASTM A 220, Ref 2 ) matrices are typically tempered martensite or, less commonly...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001003
EISBN: 978-1-62708-161-0
... containing spheroidal graphite is much stronger and has higher elongation than gray iron or malleable iron. It may be considered as a natural composite in which the spheroidal graphite imparts unique properties to ductile iron. Fig. 1 Microstructures of ductile iron. (a) As-cast ferritic. (b) As-cast...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003765
EISBN: 978-1-62708-177-1
... the other. The article provides information on nearly 100 micrographs, discussing the microstructure of flake graphite in gray iron, nodular graphite in ductile iron, and temper graphite in malleable iron. It also examines the matrix microstructures of gray, ductile, compacted, and malleable cast iron...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0009206
EISBN: 978-1-62708-161-0
...Abstract Abstract This article discusses the classification schemes for cast irons and describes the characteristics of major categories, including gray iron, white iron, ductile iron, compacted graphite iron, mottled iron, malleable iron, and austempered ductile iron. It also discusses some...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003108
EISBN: 978-1-62708-199-3
... of additives introduced in the molten iron before casting, the graphite grows as spheres, rather than as flakes of any of the forms characteristic of gray iron. Cast iron containing spheroidal graphite is much stronger and has higher elongation than gray iron or malleable iron. It may be considered a natural...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003191
EISBN: 978-1-62708-199-3
.... The shape of the graphite in the iron determines the type of iron, that is, gray, ductile, malleable, or compacted graphite. The presence of graphite provides the free-machining characteristic of iron, and the shape and amount of graphite establish the potential surface finish obtainable with a cutting...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003201
EISBN: 978-1-62708-199-3
... depends on the silicon content of the iron and the temper carbon nodule count, may be increased to 85 °C/min (150 °F/min) to form a pearlitic matrix. Oil quenching from the FSG temperature following completion of that step will produce a martensitic matrix. Hardening and Tempering of Pearlitic Malleable...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006350
EISBN: 978-1-62708-179-5
... the magnetic disc approach, PSA-backed products can also be used. Colloidal silica ( Ref 1 , 2 ) can produce small etch spots on pearlite patches in ductile cast irons, so it is best to use alumina slurries if the matrix is pearlitic. For ferritic-, ausferrite-, or martensitic-matrix ductile irons, colloidal...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005945
EISBN: 978-1-62708-168-9
... a matrix hardness that converted to 66 HRC. Martensite in a fully hardened, high-carbon steel normally is considered to have a hardness of 63 HRC (varies with carbon content). The graphite in ductile and malleable iron will reduce the indicated hardness of martensite to between 53 to 58 HRC. On gray...