# Ædificans II, P2 zona quanta Shui, Ganjingzi District, Dalian, Sina

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M42

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HSS M42 chartis

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Specifications

M42 high speed steel is a cobalt molybdenum tools steel, the addition of 8% cobalt means that M42 delivers superior red-hardness when compared to M2. The composition of M42 makes for a good balance of toughness and hardness and can be found widely used for all types of cutting tools, often used for machining materials and super alloys that are difficult to machine. M42 high speed steel has a heat-treated hardness in the range 68 to 70 HRC. 


Applications:

M42 is a high-speed steel for conditions that demand excellent hot hardness. M42 is suitable for cutting tools such as, twist drills, 

broaches, taps, milling cutters, saws, reamers, bandsaw blades and cold work tools. See our tool steel application chart

If the higher red-hardness of M42 if not required for your application then consider M2 high speed steel.       


Velox Detail:M42  sheets


JUNCTIO

        C       Si
       Cr
       W
      Mo
        V
       Co
      1.08
     0.45
      3.85
     1.50
     9.50
      1.20
      8.00


De proprietatibus Relativis

physica

·  Density: 0.282 lb/in3 (7806 kg/m3)

Imprimis · grauitatem: 7.81

· Modulus Elasticitatis: 30 x 106 psi (207 GPa)

· Machinability: 35-40% I% de chalybe

DE INSTRUCTIONIBUS HEAT TREATING: CALLOSITAS       

TEMPERATIO svo:
AC1: ° F MCDXL (DCCLXXXII ℃)       


preheating:Calor certe non excedens 400°F per horam (222°C per horam) ad 1500-1600°F (816-871°C), et coaequare.


Austenitizing (High Calor):Raptim calefac a preheat.

Fornace: 2150-2175°F (1177-1191°C)

Sal: 2125-2150°F (1163-1177°C)

Ad spissitudinem maximize, utere tortor infima.

Ad caliditatem maximize duritiei, utere caliditate summa.


ebrietas;Pressum gas, oleum calidum, vel sal. Nam gas pressurized, celeri rate exstinguitur ut infra 1000°F

(538°C) critica ad optatas possessiones obtinendas. 

Oleum enim, exstingue usque ad nigrum, circa 900°F (482°C), tunc refrigerabitur in aere adhuc ad 150 -125°F (66-51°C).

Sal enim ad 1000-1100°F (538-593°C conservatum), coaequare, in aere adhuc refrigerari ad 150 -125°F (66-51°C).


temperamento:Ingenium statim exstinguitur. Typical temperatura range est 950-1050°F (510-566°C). Tene temperiem per 2 horas, deinde frigus aeris ad temperatura ambientem. Triplex temperantia requiritur.


ANNALING

Annealing esse calidum, elapso concessionis working et antequam rursus caecitatem.

Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1500-1575°F (843-857°C), and hold for 1 hour per inch (25.4 mm) of thickness, 

minimum of 2 hours. Then cool slowly with the furnace at a rate not exceeding 50°F per hour (28°C per hour) to 1000°F (538°C). 

Continue refrigerationem ad ambientem temperiem in fornace vel in aere. Duritiam inde esse debet vel inferior 269 HBW.


Forging M42

Pre-heat slowly to 650 - 760°C and soak. Increase more quickly to the forging temperature of 1010 - 1150°C and equalize prior to forging. 

If the temperature drops below 980°C re-heating will be required. Cool the M42 very slowly after forging.

(data sheet & typical analysis available on request).


Item       Ratio (mm)processDelivery conditione,
rudentis
T1.0 - Gratiarum CDLfrigus Rolled& Nigrum superficiem Anneal
T 2.5 - 8.0calidum Rolled& Nigrum superficiem Anneal


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