Hardness Tungsten Carbide Ball Bearing Valve Seat With Abrasion
Resistance
Material Selection for valve ball and seats
The three most common materials for balls and seats are Tungsten
Carbide, Nickel Carbide, and Titanium Carbide.
Tungsten carbide is the industry standard and for good reason; it
has proven itself over many years of service in the field. It has
excellent wear properties and has a Cobalt binder, but has become
slightly more expensive.
Application for tungsten carbide ball
Tungsten Carbide – A very tough and durable Ball and Seat,
excellent for highly corrosive and abrasive well conditions.
Tungsten Carbide is a heavy, magnetic material that is extremely
hard and works well where weight is needed.
Features
Tungsten carbide balls and valve seats have the compositions of
tungsten carbide(WC) and Co or Ni or Mo additives. With high
compression strength, excellent wear resistance and well shock and
impact resistance, tungsten carbide balls and valve seats are
widely supplied as ball-rolling element in bearing industry, pump
valve spool for fluid seal, check valve for petroleum
digger,industrial sprayers to regulate the flow of fertilizers or
pesticides to crops.
Tungsten carbide balls can be also applied in a drastically
different application, it can be employed as pen balls due to their
inert chemical properties. Besides, in miniature flow control
devices, such as medical instrumentation and ink-jet printing,
tungsten carbide balls are also frequently used.
Applications
Widely used in where extreme hardness and wear resistance is
required, such as bearings, ball screws, valves and flow meters,
pen, spraying machines, pump, machinery parts, oil, hydrochloric
zcid lab, hardness measuring instrument, and so high-end industry.
Grade List
| Grade | ISO Code | Chemical Composition(%) | Physical Mechanical Properties (≥) | Application |
|
| WC | Co | Density g/cm3 | Hardness(HRA) | T.R.S N/mm2 |
|
| YG3 | K01 | 97 | 3 | 14.90 | 91.00 | 1180 | Suitable for finishing of cast iron,non-ferrous metals,alloys and
non-metallic materials,and semi-finishing vehicles for intermittent
cutting. |
| YG6 | K10 | 94 | 6 | 15.10 | 92.00 | 1420 | Finishing of chilled hard alloy cast iron and heat resistant alloy
steel and ordinary cast iron. |
| YG6X | K20 | 94 | 6 | 15.10 | 91.00 | 1600 | Cast iron, non-ferrous metals and alloys, non-metallic materials,
medium to cutting, semi-finishing and finishing. |
| YG8 | K20-K30 | 92 | 8 | 14.90 | 90.00 | 1600 | Suitable for casting of cast iron, non-ferrous metals and their
alloys and non-metallic materials, roughing of sections and rough
cutting. |
| YG10 | K40 | 90 | 10 | 14.70 | 89.00 | 1900 | Suitable for the production of drawing dies, wear parts and
stamping parts and cores for hard alloy automatic presses. |
| YG10X | K40 | 89 | 10 | 14.70 | 89.50 | 2200 | Suitable for small diameter micro drills, end mills, rotary boring
tools, etc. |
| YG15 | K30 | 85 | 15 | 14.70 | 87.00 | 2100 | Forging, perforating and stamping tools for steel bars and steel
tubes with high compression ratios and working under large
stresses. |
| YG20 | K30 | 80 | 20 | 13.70 | 85.50 | 2500 | Stamping die, stamping watch parts, musical instrument spring
piece. |
| YG20C | K40 | 80 | 20 | 13.70 | 82.00 | 2200 | punching battery case, toothpaste skin mold, small size steel ball,
screw, nut stamping die, hot rolling twist drill bit plate. |
| YG30 | G60 | 70 | 30 | 12.80 | 82.00 | 2750 | Production of standard parts, bearings, tools and other industries
for cold heading, cold punching, cold pressing die. |
Grade and applicaton for valve seat
| Grade | Co (wt%) | Density (g/cm³) | Hardness(HRA) | TRS (≥N/mm²) | Application |
| XC100 | 5.8-6.2 | 14.6-15.0 | 91.5-92.5 | 2000 | Wear-resistant |
| XC101 | 5.8-6.2 | 14.6-15.0 | 91.5-92.5 | 2500 |
| XC200 | 7.8-8.2 | 14.5-14.9 | 91.0-92.0 | 2100 |
| XC201 | 7.8-8.2 | 13.5-14.9 | 91.0-92.0 | 2800 |
| XC300 | 9.8-10.3 | 14.2-14.6 | 90.5-91.5 | 2600 |
| XC301 | 9.8-10.3 | 14.2-14.6 | 90.5-91.5 | 3200 |
| Grade | Ni (wt%) | Density (g/cm³) | Hardness (HRA) | TRS (≥N/mm²) | Application |
| XN100 | 6.5-7.5 | 14.5-14.8 | 88.5-91.0 | 1800 | Corrosion-resistant |
| XN101 | 6.5-7.5 | 14.5-14.8 | 88.5-91.0 | 2200 |
| XN300 | 10.0-11.0 | 14.2-14.6 | 86.5-89.5 | 2100 |
| XN301 | 10.0-11.0 | 14.2-14.6 | 86.5-89.5 | 2400 |
| Seats dimension (mm) |
| D | d | H |
| 19.48 | 11.68 | 12.7 |
| 22.66 | 13.97 | 12.7 |
| 28.22 | 17.02 | 12.7 |
| 33.81 | 20.96 | 12.7 |
| 36.09 | 24.38 | 12.7 |
| 41.43 | 26.92 | 12.7 |
| 48.79 | 33.27 | 12.7 |
| 74.93 | 43.18 | 19.05 |
| Ball dimension (mm) |
| D±1.27(mm) |
| 15.88 |
| 19.05 |
| 23.83 |
| 28.58 |
| 31.75 |
| 34.93 |
| 42.88 |
| 57.15 |
Production Process
FAQ
Q1: How long is your delivery period?
A1: It depends on specific conditions. However, it could be 10 to
15 days on average.
Q2: Do you offer samples?
A2: Yes, we do offer samples. However, buyers need to pay for the
freight charge. In addition, whether samples are free or not
depends on the quantity you buy.
Q3: How do you pack the products?
A3: In general, we use wood, plastic or carton boxes. We also put
some soft materials inside to prevent possible damage on products.
Q4: How much advance payment do I need to make?
A4: If the products you buy are in stock, you need to make full
payment; if the products are out of stock, you need to make about
50 percent of full payment and then we will start the production
process. However, you still need to pay the rest of charges before
we deliver the products.
Q5: What kinds of payment do you accept?
A5: In addition to the patterns of payment shown above, you can
discuss with us about in which way you would like to pay.
Please contact us if you have any other questions.
