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M42

Башкы бет>Буюмдар>High Speed ​​Steel>M42

HSS M42 зым таяк

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өзгөчөлүктөрү

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 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.


Тиркемелер:

Suitable for manufacturing various strong cutting tools with wear-resistant, resistant to impact. Advanced punching die, screw die, the toughness and complicated shape of the punch, etc. Roll cutting tool industry: scraper, serrated knife, iron knives, drill bits, etc.


Forging industry: жасалма өлүм.


Screw industry: heading forming mould, such as teeth, punch        


САЛЫШТЫК КАСИЕТТЕР

Quick Толугураак: M42  wire rod


Курамы

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


ЖЫЛЫК ДАЯРЛАУУ НУСКАМАСЫ: КАТУУ

КРИТИКАЛЫК ТЕМПЕРАТУРА:
Ac1: 1560°F(849℃)


ФИЗИКАЛЫК КАСИЕТТЕРИ

· Тыгыздыгы: 0.282 lb/in3 (7806 кг/м3)

· Салыштырмалуу тартылуу: 7.81

· Ийкемдүүлүк модулу: 30 x 106 psi (207 GPa)

· Machinability: 35% көмүртек болоттун 40-1%


Алдын ала ысытуу: Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1500-1600°F (816-871°C), and equalize.


Austenitizing (High Heat): Heat rapidly from the preheat.

Furnace: 2150-2175°F (1177-1191°C)

Salt: 2125-2150°F (1163-1177°C)

To maximize toughness, use the lowest temperature.

To maximize hot hardness, use the highest temperature.


Өчүрүү: Pressurized gas, warm oil, or salt. For pressurized gas, a rapid quench rate to below 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).


Чыңдоо: Temper immediately after quenching. Typical tempering range is 950-1050°F (510-566°C). Hold at temperature for 2 hours, then air cool to ambient temperature. Triple tempering is required.


нерсе        Dimension (мм)ProcessЖеткирүү шарты
Wire RodDIA 5.5 - 13Hot RolledКара бет жана Anneal


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