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M42

Id-dar>prodotti>Azzar ta 'Veloċità Għolja>M42

HSS M42 bar ċatt

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speċifikazzjonijiet

M42 super high speed steel is a premium cobalt high speed steel with a chemical composition designed for high hardness and superior hot hardness. These properties make the steel an excellent choice for machining high-strength and pre-hardened steels, high-hardness alloys, and the difficult-to-machine, nonferrous super alloys used in the aerospace, oil, and power generation industries.

M42 exhibits excellent wear resistance by virtue of high heat-treated hardness (68 to 70 HRC), and the high cobalt content imparts the hot hardness. As such, the cutting edges on tools made from M42 super high speed steel stay sharp and hard in heavy-duty and high-production cutting applications.


Applikazzjonijiet:

AISI M42 tool steel is a high-speed steel suitable for cutting tools such as, twist drills, broaches, taps, milling, cutters, saws, reamers etc. In terms of performance, HSS grade M42 is a steel to be used in conditions where the demand for hot hardness is of great importance i.e. where high performance is essential.


Dettall Quick:M42---Flat Bars 


KOMPOŻIZZJONI

        C
       Si       Cr
       W      Mo        V
       Co
      1.08      0.453.85
      1.50      9.50
      1.20      8.00


PROPRJETAJIET RELATTIVI


STRUZZJONIJIET GĦAT-TRATTAMENT TAS-SĦANA : TISĦIĦ

TEMPERATURA KRITIKA :
Ac1: 1560 ° F (849 ℃)


Tifi:Pressurized gas, warm oil, or salt. For pressurized gas, a rapid quench rate to taħt 1000 ° F (538 ° C) 

is critical to obtain the desired properties. For oil, quench until black, 

about 900°F (482°C), then cool in still air to 150 -125°F (66-51°C). For salt maintained at 1000-1100°F (538-593°C), 

equalize, then cool in still air to 150 -125°F (66-51°C).


Ittemprar:Temper immediately after quenching. Typical tempering range is 1025-1050°F (552-566°C).

Hold at temperature for 2 hours, then air cool to ambient temperature. Double tempering is required. 

For large cross sections, and especially for blanks from which tools will be cut by wire EDM, 

triple tempering is strongly recommended.


Vantaġġ:

all-round applicability

good machine-ability

good performance

good hot hardness

good wear resistance


Punt       Dimensjoni (mm)Proċess       Kondizzjoni tal-kunsinna
Bar ĊattT 3.0-20 XW 20-100Irrumblat bis-sħanaWiċċ iswed u Anneal


Common M42 Tool Steel Related Specifications and M42 High Speed Steel Equivalents


pajjiżUSAĠermaniżĠappun
standardASTM A600ISO 4957JIS G4403
gradiM421.3247/HS2-9-1-8SKH59


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