Name: silicon nitride grinding ball, ceramic grinding ball
Brand: sinoma
Availability: InStock

Product Details

Silicon nitride grinding ball

1. Product detail:

1.Manufacture silicon nitride balls from 1995;

2.Silicon nitride ball powder import form Europe;

3.Competitive price and satisfaction services;

4.Plenty stocks.

Material: slicon Nitride Ceramic

Size Range: 0.8mm~101.6mm

Grade: G5~G100

2. Packing:

Standard exporting vacuum package, Carton box; Or according customer demand.

3. Grade of silicon nitride balls:

Grade	Gauge	Ball subgauge	Ball diameter variation	Ball lot diameter variation	Deviation from spherical form	Surface roughness
G5	±5	±0.4 0.2	0.13	0.25	0.13	0.014
G10	±10	±0.4 0.2	0.25	0.5	0.25	0.020
G16	±10	±0.8 0.4	0.4	0.8	0.4	0.025
G20	±10	±0.8 0.4	0.5	1	0.5	0.032
G24	±12	±0.8 0.4	0.6	1.2	0.6	0.040
G28	±12	±0.8 0.4	0.7	1.4	0.7	0.050
G40	±16	±1.6 0.8	1	2	1	0.080
G60	±16	±2.4 1.2	1.5	3	1.2	0.1
G100	±40	±4 2	2.5	5	2.5	0.125
G200	±60	±6 3	5	10	5	0.150

4. Silicon Nitride(Si3N4)Ceramic Properties:

Density g/cm3	Relative density %	Elastic modulus GPa	Compression strength ratio(25℃)%	Hardness(HV)GPa
3.260.02	>99.5	300~320	40~50	16 - 20
Fracture toughness /MPa•m1/2	Bending trength MPa	Poisson's ratio	Linear expansion coefficient 10-6K-1	Webuller modulus
6.0~9.0	600~1000	0.25	3.1~3.3	12~15
Thermal conductivity W•(m•K)-1	Specific resistance ratio	Corrosion resistance	Size stability	Magnetic
15~20	1018	Excellent	Excellent	None

5. Application:

It is widely used in aerospace, mechanical industry, chemical industry and petroleum industry. Specified for use in such high-technology industries such as hybrid bearings, aerospace and defense.

6. R&D TEAM

1.We have professional R&D Dept. and advanced facilities;

2.We have the R&D team of over 50 people and over 100% of them have tertiary education background;

3.Products are developed by the most creative professionals, and with world level advanced technical facilities that are qualified to achieve professional test.

7. Every step quality control

1.Raw material checking when suppliers deliver to our factory to ensure no quality problem at the very beginning;

2.Instrument and equipment checking every time before use.

3.Size checking, roundness checking, crushing load test etc. by special measuring tool.

8. Company Introduction

The company has advanced production including a HIP furnace and improved detection equipment and strictly follow the ISO9001 quality system.

Our factory was founded in 1963, Beijing Sinoma Synthetic Crystals Co, LTD.Is a hitech state

enterprise, belongs to the China National Materials Group Co., Ltd. An excellent technical team

headed by the state level experts has built up, which provides a reliable guarantee for the

continuous and rapid technological development.

9. Customer & Fair

10. Customer & Fair

Please contact us for more detail and correct products!

Whatsapp: 86+13153371540

Email: tina(a)