Valve Seat
Introduction
WD-Co 6 is the most widely used of the wear resistant cobalt-based alloys and exhibits good all-round performance. It is regarded as the industry standard for general-purpose wear resistance applications, has excellent resistance to many forms of mechanical and chemical degradation over a wide temperature range, and retains a reasonable level of hardness up to 500°C (930°F). It also has good resistance to impact and cavitation erosion. WD-Co 6 alloy material is ideally suited to a variety of hardfacing processes and can be made to investment casting & P/M components. WD-Co 6 casting valve seats are widely used in oil and gas industry.
Alloy Material Equivalent: Stellite 6
Standard: AMS 5387D/2009 (UNS R30006)
Manufacturing: Investment Casting
Chemical Analysis
|
Co |
Cr |
W |
C |
Ni |
Mo |
Others |
|
Bal. |
27 - 32 |
4 - 6 |
0.9 - 1.4 |
< 3.0 |
< 1.0 |
Fe, Si, Mn |
Physical & Mechanical Properties
|
Hardness |
Density |
Melting Range |
Tensile Strength (Mpa) |
Yield Strength (Mpa) |
Elongation (%) |
|
36 - 45 HRC |
8.44 g/cm3 |
1285 - 1410 ºC |
915 |
750 |
0.8 |
Common Dimensions
|
SN. |
Specification |
OD (mm) |
ID (mm) |
H (mm) |
|
1 |
1-13/16” – 10M |
63.4 |
46.48 |
9.47 |
|
2 |
2-1/16” 5M 15M FC |
69.8 |
53.2 |
9.48 |
|
3 |
2-9/16” 5M 10M |
85.65 |
65.9 |
9.47 |
|
4 |
2-9/16” 5M 10M |
95.15 |
65.8 |
14.22 |
|
5 |
3-1/16“ 10MFC |
99.9 |
79.8 |
9.47 |
|
6 |
3-1/16“ 15M |
111.05 |
78.74 |
14.22 |
|
7 |
4-1/16” 5M |
130.05 |
105.2 |
9.47 |
|
8 |
4-1/16” 10MFC |
130.05 |
104.6 |
14.22 |
|
9 |
4-1/16” 15MFC |
139.6 |
104.6 |
17.42 |
|
10 |
5-1/8” 10M |
161.83 |
131.2 |
17.42 |
|
11 |
7-1/16” 15M |
235.08 |
180.4 |
22.22 |
|
12 |
7-1/16” 10M |
222.25 |
180.97 |
17.27 |
Penetrant Inspection
Packaging
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