China Cobalt Based Alloy Stellite for Valve Ball Seat

Stellite Finished Valve Balls and Seats
API Standard Materials
API Symbol
Description
Hardness
Material
A1
Stainless Steel
Ball HRC 58-65
Seat HRC 52-56
UNS 41000-UNS44000
B1
Cobalt Alloy Cast
Ball HRC 56-63
Seat HRC 50-56
Cobalt, chromium and tungsten alloy
B2
Cobalt Alloy Powder metal
Ball HRC 53-60
Seat HRC 51-57
Cobalt, chromium, and tungsten alloy
C1
Tungsten Carbide
Ball HRA 88-89
Seat HRA 88-89.5
Tungsten with cobalt binder
C2
Nickel Carbide
Ball HRA 89-90.5
Seat HRA 87.5-89
Tungsten with nickel binder
C3
Titanium Carbide
Ball HRA 89-90.5
Tungsten and titanium Carbide with cobalt binder
Other Materials
Description
Hardness
Material
Silicon Nitride
90.0 - 92.0 RA
Si3N4
Zirconia Ceramic
80 - 84 RA
Mg - PSZ
API No.
Seat Size
Ball Size
V11-106
1-1/16"
5/8"
V11-125
1-1/4"
3/4"
V11-150
1-1/2"
15/16"
V11-175
1-3/4"
1-1/8"
V11-200
2"
1-1/4"
V11-225
2-1/4"
1-3/8"
V11-250
2-3/4"
1-1/16"
V11-375
3-3/4"
2-1/4"
1. Description :
Model V11-175 stellite ball valve and valve seat/API 11AX standard valve ball
Ball valve and valve seats is widely used in petroleum industry, especially for oil well pump,
such as sucker rod pump.
2. Features:
♦Castings of main alloys: cobalt-base alloy, nickel -base alloy and stellite alloy;
♦Available forms: end product or blank;
♦Properties: good resistance against corrosion and oxidation;
♦Main application: extensively used in petrochemical industry, marine exploration, heat exchanger and pump;
♦Processing: investment casting, sand casting;
♦Maximum weight:
a) Investment casting: 180kg
b) Sand casting: 1,000kg