Common Gate Valve Coating Materiails

name

Description

Chemical composition

Max thickness

Hardness

Bond strength

Porosity

Limit temperature

Costing characterlzation

mm

MPa

%

℃

WC-CoCr

WC86/Co10/Cr4

Co：9-11

Cr：3.5-4.5

C：3.5-4.5

W: Bal

1

1100-1500

>75

<1%

482

• Good abrasive resistance at low temperature
• Compared with WC-Co, its oxidation resistance

and corrosion resistance are improved.

• The coating is compact and hard.

WC-Co

WC88/Co12

Co：11-13

C：3.6-5.5

W: Bal

2

1050-1200

>75

<1%

454

• Good abrasive resistance at low temperature
• Limited oxidation resistance and corrosion

resistance

• The coating is compact and hard