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                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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