Extramet EMT 612 Tungsten Carbide, Ultra-Fine Grain

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Extramet EMT 612 Tungsten Carbide, Ultra-Fine Grain
Categories:	Ceramic; Carbide
Material Notes:	EMT 612, an ultrafine grade, combines excellent impact strength with Transverse Rupture Strength (TRS) for machining materials hardened up to 64HRC, titanium alloys and high alloyed steels. EMT 612 is a homogenous mixture of tungsten carbide grains in a tough cobalt binder matrix. The carbide grains are fused into a solid matrix of cobalt metals. The metal carbide’s grains are “cemented” in the binder metal’s matrix. Information provided by Extramet
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Physical Properties	Metric	English	Comments

Density	14.0 - 14.2 g/cc	0.506 - 0.513 lb/in³	ISO 3369
Porosity	<= 2.0 %	<= 2.0 %	A, Basic; ISO 4505
	<= 2.0 %	<= 2.0 %	B, Particular; ISO 4505
	<= 2.0 %	<= 2.0 %	C-Porosity; ISO 4505
Grain Size	0.50 µm	0.50 µm	Average

Mechanical Properties	Metric	English	Comments
Hardness, Vickers	1670 - 1770	1670 - 1770	ISO 3878
Modulus of Rupture	>= 0.420 GPa	>= 60.9 ksi	Transverse Rupture Strength

Component Elements Properties	Metric	English	Comments
Cobalt, Co	12 %	12 %	Metals Basis
Other	1.5 %	1.5 %	Other Carbides
Tungsten, W	86.5 %	86.5 %	Metals Basis

Descriptive Properties
Coercive Field Strength	26.5-33.5 kA-M^-1
Coercive Force 4no	18.3-20.7 µT-m3-kg^-1

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EEMT006 / 187009

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