Extramet EMT 409 Tungsten Carbide, Fine Grain

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Extramet EMT 409 Tungsten Carbide, Fine Grain
Categories:	Ceramic; Carbide
Material Notes:	EMT 409 combines cutting edge strength with wear and temperature resistance. It is ideal for rough milling and drilling heavy materials such as stainless steel and noncorrosive nickel-based alloys. Extramet EMT 409 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	Original Value	Comments

Density	14.39 - 14.59 g/cc	ISO 3369
Porosity	<= 2.0 %	A, Basic; ISO 4505
	<= 2.0 %	B, Particular; ISO 4505
	<= 2.0 %	C-Porosity; ISO 4505
Grain Size	1.2 µm	Average

Mechanical Properties	Original Value	Comments
Hardness, Vickers	1490 - 1610	ISO 3878
Modulus of Rupture	>= 3.50 GPa	Transverse Rupture Strength

Component Elements Properties	Original Value	Comments
Cobalt, Co	9.0 %	Metals Basis
Other	1.0 %	Other Carbides
Tungsten, W	90 %	Metals Basis

Descriptive Properties
Coercive Field Strength	15.5-18.5 kA-M^-1

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EEMT003 / 187006

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