Cobalt-Chromium Alloy 20 Ball

Product Details

Cobalt-chromium Alloy valve ball and seat are very important parts of underground oil-well pump , they always show up together and cooperate very good , no better material can replace Cobalt-chromium Alloy now .

The valve balls are made of Cobalt-chromium Alloy 20 and valve seat are made of Cobalt-chromium Alloy 3 . They are a good team to resist the wear and corrosion issue in oil and gas pimping process .

Description

What is the Details of our stellite valve seat and ball?

Material	Cobalt-chromium Alloy –Grade 3 and 20
Process	Powder Metallurgy , it is short for PM
Hardness	53-59HRC
Density	8.6-8.8 g/cm ³
Size	Diameter 11-60 mm
Properties	Wear and corrosion resistance, high temperature resistance
Application	Oil well pump components , wear and corrosion resistance parts
Instructions	Drawing made upon cutomers request
Usage	One balls with one valve
Tolerance control	Turning or grinding surface , tolerance upon drawing
Production lead time	Samples 10 days , normal order 30 days
Production capacity	40,000pcs one month.
Package	Carton or wooden case , pallet for export

Chemical composition

Grade

Density

(g/cm³)

Hardness

(HRC)

Cobalt-chromium Alloy 3

2.0-2.7

1.0

29-33

3.0

11-14

Bal.

3.0

≤0.03

8.55

51-55

Cobalt-chromium Alloy 20

2.2-3.0

2.0

30-34

3.0

1.0

14-18

Bal.

3.0

≤0.05

8.65

53-59

API Valve Seat and ball Standard

No.	Specifications	Seat Dimensions OD/ID×H (in)	Weight (g/pc)	Ball Dimensions	Weight (g/pc)
1	VII-106	0.793/0.460×0.500	22.81	15.88	18.44
2	VII-125	0.918/0.550×0.500	29.55	19.05	31.84
3	VII-150	1.168/0.670×0.500	49.53	23.83	62.32
4	VII-175	1.388/0.825×0.500	68.13	28.58	107.51
5	VII-200	1.478/0.960×0.500	69.05	31.75	147.40
6	VII-225	1.720/1.060×0.500	100.34	34.93	196.27
7	VII-250	2.010/1.310×0.500	127.04	42.88	363.10
8	VII-375-1	3.072/1.700×0.750	536.94	57.15	859.63
9	VII-375-2	3.072/1.880×0.750	484.12	57.15	859.63

Production Process—Powder metallurgy

Mixing powder – Pressing – sintering – machining

We guarantee the balls roundness and accuracy, also the tightness of ball and seat.

Our service:

1.Supply Cobalt-chromium Alloy parts upon customer drawing and request

2.Free samples could be provided for testing

3.Both big quantity and small quantity are acceptable , Order flexible.