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Weartech International WT-21 Cobalt Hardfacing & Wear Resistant Alloy

Category Metal , Nonferrous Metal , Cobalt Alloy
Manufacturer Weartech
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Weartech International WT-21 Cobalt Hardfacing & Wear Resistant Alloy.pdf
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Material Notes:
Applications: hot trimming & forging dies, high pressure high temperature valves, hot shears, valve seats, pump impellers, ringsInformation provided by Weartech International
Physical Properties Metric English Comments
Density 8.31 g/cc
0.300 lb/in³
Mechanical Properties Metric English Comments
Hardness, Rockwell C 27
27
Hardness, Vickers 100

@Treatment Temp. 760 °C
100

@Treatment Temp. 1400 °F
150

@Treatment Temp. 649 °C
150

@Treatment Temp. 1200 °F
190

@Treatment Temp. 538 °C
190

@Treatment Temp. 1000 °F
205

@Treatment Temp. 427 °C
205

@Treatment Temp. 800 °F
300

@Treatment Temp. 25.0 °C
300

@Treatment Temp. 77.0 °F
Tensile Strength 696 MPa
101000 psi
Heat Treated
Elongation at Yield 1.0 - 3.5 %
1.0 - 3.5 %
Charpy Impact >= 8.13 J
>= 6.00 ft-lb
Thermal Properties Metric English Comments
CTE, linear 13.7 µm/m-°C
7.60 µin/in-°F
Specific Heat Capacity 0.423 J/g-°C
0.101 BTU/lb-°F
Melting Point <= 1370 °C
<= 2490 °F
Liquidus 1370 °C
2490 °F
Component Elements Properties Metric English Comments
Carbon, C 0.25 %
0.25 %
Chromium, Cr 27 %
27 %
Cobalt, Co 61.25 - 64.25 %
61.25 - 64.25 %
Iron, Fe <= 3.0 %
<= 3.0 %
Molybdenum, Mo 5.0 %
5.0 %
Nickel, Ni 2.5 %
2.5 %
Silicon, Si <= 1.0 %
<= 1.0 %
Descriptive Properties Value Comments
Corrosion Resistance, Hydrochloric Acid Conc. 5.65% <5 mils/year
RT
Corrosion Resistance, Nitric Acid Conc. 25-65% <5 mils/year
RT
Corrosion Resistance, Sulfuric Acid Conc. 5-10% <5 mils/year
RT
Relative Wear Performance Cold Abrasion
Not Recommended
Corrosion
Excellent
Erosion
Excellent
Hot Abrasion
Not Recommended
Impact
Excellent
Metal to Metal
Excellent
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