- Overview
- Product Description
- Detailed Photos
- Product Parameters
- Certifications
- Packaging & Shipping
- Company Profile
- Our Advantages
- FAQ
Basic Info.
Product Description
1. Introduction
The main component of Silicon nitride Si3N4 ceramic tailored radiation tubes / pipes with chemical resistance is silicon nitride, its chemical formula is Si3N4, which is an important structural ceramic material. Silicon nitride is a super-hard atomic crystal that has lubricity and wear resistance; it can resistant oxidation at high temperature and can resist the impact of cold and heat, and this NSIC protection tube will not crack under rapid cooling and then rapid heating after heating in the air to over 1000ºC.
The Silicon nitride Si3N4 ceramic tailored radiation tubes / pipes with chemical resistance is extremely resistant to high temperature, and its strength can be maintained at a high temperature of 1200 ° C . It will not be melted after being heated, and will not decompose until 1900 ° C. It has amazing chemical resistance and can withstand almost all inorganic acids and caustic soda solutions below 30% , are also resistant to corrosion by many organic acids and are not wetted or corroded by many molten metals or alloys such as aluminum, lead, tin, silver, brass, nickel, etc. It is a high-performance electrical insulation material, silicon nitride protection tube has been welcomed by the market due to its own unique advantages.
| Types | GPSN | RSSN |
| Density | >3.2g/cm3 | >2.4g/cm3 |
| Si3N4 content | >92% | >92% |
| Flexural strength | >600Mpa | >200Mpa |
| Compressive strength | >1500Mpa | |
| Thermal conductivity(W/mk) | >22 | >14 |
| Porosity | 0 | <15% |
| Thermal expansion coeff.(RT-1000ºC) | 3.2 | 2.8 |
| Max temperature In air | 1400ºC | 1400ºC |
| Hardness(HRA) | >92 | >85 |
3. Features
1, Moulding: Cold isostatic pressing(CIP)
2, Sintering: GPSN/RSSN
3, High strength and good compactness
4, Low thermal expansion coefficient
5, Excellent thermal shock resistance
6, No wetting by molten aluminum and non-ferrous metal
7, Good corrosion resistance
4. Recommended Sizes
| OD(mm) | ID(mm) | Length(mm) |
| 16 | 8 | 300-750 |
| 22 | 12 | 300-900 |
| 28 | 16 | 300-1200 |
| 30 | 18 | 300-1000 |
| 45 | 25 | 300-1000 |
| Item | Unit | GPSN |
| Density | g/cm3 | 3.20±0.02 |
| Elastic Modulus | Gpa | 300~320 |
| Crushing Load Ratio | (25ºC)% | 30~35 |
| Hardness | (HV)(Gpa) | 1600-1800 |
| Fracture Toughness | Mpa.m 1/2 | 6.0~7.0 |
| Bending Strength | Mpa | 650~750 |
| Poisson's Ratio | | 0.25 |
| Coefficient of Heat Expansion | 10-6K-1 | 3.0~3.2 |
| Weber Modulus | | 10~12 |
| Thermal Conductivity | W.(M.K) -1 | 15~20 |
| Specific Resistivity | | 1018 |
| Magnetic | | No |
Yixing City is the famous pottery capital in China. Most of Chinese ceramic industry is in Yixing. Jiangsu Fist Special Ceramic Co., Ltd is located in Yixing, established in 2016.
1. We support OEM and ODM;
2.Timely response to your inquiry, multiple choice recommendations based on your demand, quickly respond mails and provide solutions;
3.Provide sample and trial order are accepted for the quality evaluation;
4.Arrange production on time and control quality strictly;
5. Book the earliest vessel or plane to guarantee the delivery time;
6. Provide all the detailed news and pictures from order to delivery;
Offer relative export documents and original certificate if needed;
7. Warm and considerable after-sale service.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-30 days if the goods are not in stock or customeriziation, it is according to quantity.
Q: How about the payment terms?
A: T/T or L/C are okay. We can negotiate.
Q: How can you get quotation?
A: Please kindly send me your drawing with technical requirement and demand quantity.
If you don't have the drawing,please kindly courier samples to us.We will quote our best price as soon as possible.