WL Co12

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WL Co12

Stellite 12 Weartech WT-12 Stellite 12 Green Hard Facing Rod Green Color Cutter And Blade Outlet Valve Sealing Surface

Properties: Corrosion resistance, heat resistance and wear resistance

Application: Pressure valves, sawteeth screw fights

008615801826494

singoo@wl-allotech.com

8615801826494

WL Co12

description1

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Product Description

WL-Co12 could be considered an intermediate alloy between WL-Co6 and WL-Co1. It contains a higher fraction of hard, brittle carbides than WL-Co6, and has increased resistance to lowangle erosion, abrasion, and severe sliding wear whilst retaining reasonable impact and cavitation resistance. WL-Co12 is often used self-mated or running against WL-Co6 or WL-Co1. The higher tungsten content provides better hightemperature properties compared to WL-Co6, and it can be used at temperatures up to about 700˚C.

WL-Co12 is typically used for cutting tools that need to withstand abrasion, heat and corrosion. Examples include industrial knives for cutting carpets, plastics, paper and synthetic fibres; and saw tips in the timber industry. It is also used for control plates in the beverage industry, pump vanes, bearing bushes and narrowneck glass mold plungers; and for hardfacing of engine valves, pinch rollers in the metal-processing industries, and rotor blade edges.

Common Names: Stellite 12, BISHILITE (MHA) No.12, Weartech WT-12, Stoodite 12, POLYSTEL 12

Standard: AWS 5.21-2001 ERCoCr-B

Chemical Composition(%)

C	Si	Mn	Mo	Cr	W	Ni	Fe	Co
1.4	1.30	≤1.00	≤1.00	30.00	8.5	≤3.00.	≤3.00	Rest

Characterisitic

AWS / ASME: A5.21 / SFA5.21 ERCoCr-B
Metal to metal Wear	Excellent
Cold / Hot Abrasion	Excellent/Excellent
Erosion / Corrosion	Excellent/Excellent
Deposit Layers	2 Max
Impact	Good
Magnetic	No
Thermal Conductivity	14.6 W/m.K, 100 Btu-in/hr/ft2/°F
Electrical Resistivity	98 µ-ohm.cm, 38.6 µ-ohm.cm

Packing Details

For length 350mm 500mm pack in carton each 5kg
For 1000mm packing in 5kg tube, 4 tubes in one 20kg carton
For length more than 1000mm, pack in wooden box directly

Applications

Used for pre-protection of plastics, paper-making, chemical fiber, cutter and blade Outlet valve sealing surface
High temperature and high-pressure valve

Type We Could Offer

Trademark	Nominal Chemical Composition										HRC	Application
Trademark	C	Cr	Si	W	Ni	Fe	Mn	Mo	Co	B	HRC	Application
WL Co1	2.45	30.0	1.0	13.0	≤3.0	≤3.0	≤1.0	≤1.0	Bal.		50-58	Valve seat insets, bearing, sawteeth, rotary ring, Pump Sleeves
WL Co3	2.4	30.5	1.0	13.0	≤3.0	≤3.0	≤1.0	≤1.0	Bal.		50-56	Valve seat insets,steel mill guide roll, wearing panel of cracker blade, etc.
WL Co4	1.0	31.0	1.0	14.0	≤3.0	≤1.0	≤0.5	≤0.5	Bal.		45-50	Hot extrusion die, dry battery industry
WL Co6	1.2	29.0	1.0	4.5	≤3.0	≤3.0	≤1.0	≤1.0	Bal.		40-46	Engine valve, high temperature valve, turbine blade
WL Co12	1.4	30.0	1.3	8.5	≤3.0	≤3.0	≤1.0	≤1.0	Bal.		44-50	Pressure valves, sawteeth screw fights
WL Co20	2.5	32.0	1.0	17.0	≤3.0	≤3.0	≤0.5	≤1.0	Bal.		54-59	Wear plate, bearing sleeve, etc.
WL Co21	0.2	27.0	1.0	0.2	≤3.0	≤2	≤1.0	≤5.5	Bal.		20-40	Fluid valve seat, turbine blades, hot forging die
WL Co25	0.05	20.0	1.0	15.0	10.0	≤2.0	≤1.5	≤1.0	Bal.		24	High temperature and corrosion-resistant valve sealing surface, pressure casting dies, etc.
WL Co31	0.5	26.0	1.0	7.5	10.0	≤3.0	≤1.0	≤1.0	Bal.		30-35	Extrusion die, steam turbine blade, etc.
WL Co32	1.8	26.0	1.2	12.0	22.0	≤1.5	≤0.5	≤1.0	Bal.		40-45	Engine inlet and exhaust valve
WL Co190	3.2	26.0	1.0	14.0	≤1.0	≤3.0	≤1.0	≤1.0	Bal.		54-60	Petroleum drill bit, mining industry
WL CoT400	0.08	8.5	2.6		1.5	≤1.5	≤1.0	28	Bal.	0.8	50-60	Valve and roller path, plastic extruder in strongly corrosive
WL CoT800	0.08	18.0	3.4		≤1.5	1.5	≤1.0	28	Bal.	0.8	52-58	Valve and roller path, plastic extruder in strongly corrosive