WL Co21

Home > Products > Hardfacing welding material > WL Co21

WL Co21

Stellite 21 Hardfacing Welding Thermal Spraying Powder Cobalt Alloy Powder

Properties: Corrosion resistance

Application: Fluid valve seat, turbine blades, hot forging die

008615801826494

singoo@wl-allotech.com

8615801826494

WL Co21

description1

Zipper closure 1/4 zip athletic pullovers for men. Stretchy, lightweight, fast-drying fabric for superior performance. REGULAR FIT - US standard sizes. An athletic fit that sits close to the body for a wide range of motion, designed for optimal performance and all day comfort. FEATURES - Quarter zip closure;Thumbholes on long sleeves to keep them in place during workout

Product Description

WL Co-21 is recommended for applications involving cavitation, erosion, corrosion and/or high temperatures, such as valve trim for petrochemical and power generation. WLCo-21 has excellent resistance to thermal and mechanical shock. Optimum high temperature strength is obtained by solution heat treatments at 1200-1240ºC (2190 - 2265ºF) followed by quenching, and aging in the temperature range 700-1150°C (1290-2100°F). Due to its good impact resistance, it has been widely used in the building up of forging or hot stamping dies.

Common Names: Stellite 21 Polystel 21

Standard: AWS 5.21-2001 ERCoCr-E

CHEMICAL COMPOSITION(%)

C	Si	Mn	Mo	Cr	W	Ni	Fe	Co
0.25	1.50	≤0.50	5.50	27.30	≤0.50	2.00	1.50	Rest

Particle size (µm)

180/53, 180/63, 150/45, 150/63, 150/53, 125/38, 250/45, 45/20, 53/20

CHARACTERISITIC

Abrasion Resistance	Moderate
Impact Resistance	Excellent
Corrosion Resistance	Good
Hardness	HRC 20-35
Deposit Layers	Multiple
Deposit Cross Checks	No
Magnetic	No
Hot Wear Hardness	Good
Machineability	Carbide Tools

Packing Details

Each bottle 5kg/bottles, 5 bottles pack in one carton,then put cartons onto pallet or Box. OEM packing & label or customized packing methods available.

APPLICATIONS

Used to make various liquid valves, valve seats

Water turbine blade, hot forging die

Cutting(hot shear)

Impeller(Pump Impellers, Rings)

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