Weartech International WT-6 Cobalt Hardfacing & Wear Resistant Alloy

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Weartech International WT-6 Cobalt Hardfacing & Wear Resistant Alloy
Categories:	Metal; Nonferrous Metal; Cobalt Alloy
Material Notes:	Applications: engine valves, pump shafts & sleeves, hot cutting & rotary knives, high pressure high temperature valves, extrusion screws Information provided by Weartech International
Key Words:	ERCoCr-A
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Physical Properties	Original Value	Comments

Density	8.39 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Rockwell C	38 - 48
Hardness, Vickers	185 @Treatment Temp. 760 °C
	275 @Treatment Temp. 649 °C
	290 @Treatment Temp. 538 °C
	320 @Treatment Temp. 427 °C
	415 @Treatment Temp. 25.0 °C
Tensile Strength	115000 psi	As Cast
Elongation at Yield	0.00 - 1.5 %
Charpy Impact	9.00 ft-lb	As Cast

Thermal Properties	Original Value	Comments
CTE, linear	9.10 µin/in-°F
Specific Heat Capacity	0.101 BTU/lb-°F
Melting Point	<= 2360 °F
Liquidus	2360 °F

Component Elements Properties	Original Value	Comments
Carbon, C	1.1 %
Chromium, Cr	28 %
Cobalt, Co	59.8 - 65.8 %
Iron, Fe	<= 3.0 %
Nickel, Ni	<= 3.0 %
Silicon, Si	1.1 %
Tungsten, W	4.0 %

Descriptive Properties
Corrosion Resistance, Hydrochloric Acid Conc. 5.65%	<5 mils/year	RT
	>400 mils/year	Boiling
Corrosion Resistance, Nitric Acid Conc. 25-65%	<5 mils/year	RT
	>400 mils/year	Boiling
Corrosion Resistance, Sulfuric Acid Conc. 5-10%	<5 mils/year	RT
	>400 mils/year	150 °F
Relative Wear Performance	Cold Abrasion	Good/Moderate
	Corrosion	Excellent
	Erosion	Excellent
	Hot Abrasion	Good/Moderate
	Impact	Excellent
	Metal to Metal	Excellent

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NWEART004 / 142541

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