Suzhou Xunshi New Material Co., Ltd
| Payment Terms | T/T |
| Supply Ability | 500kg per week |
| Delivery Time | 30-35 days |
| Packaging Details | Plywood case |
| Equal grade | KV-4 |
| Forms of supply | Bar, forging, tube, plate, strip |
| Density | 8.27 |
| Resistance rate | 0.46 μΩ·m |
| Curie point | 440°C |
| Product Name | Controlled Expansion Alloy |
| Brand Name | XUNSHI |
| Model Number | 4J33 |
| Certification | ISO9001 |
| Place of Origin | China |
View Detail Information
Explore similar products
Capillcary Low Expansion Alloys -100°C To +200°C W.Nr 1.3912 For Laser
4J42 Iron - Nickel Controlled Expansion Alloys Nilo42 ASTM F30 UNS K94100
Ni36 Invar 36 Controlled Expansion Alloy Foil Thickness 0.005-0.05mm
Round Bar Controlled Expansion Alloys Borosilicate Glasses W. Nr. 1.3981
Product Specification
| Payment Terms | T/T | Supply Ability | 500kg per week |
| Delivery Time | 30-35 days | Packaging Details | Plywood case |
| Equal grade | KV-4 | Forms of supply | Bar, forging, tube, plate, strip |
| Density | 8.27 | Resistance rate | 0.46 μΩ·m |
| Curie point | 440°C | Product Name | Controlled Expansion Alloy |
| Brand Name | XUNSHI | Model Number | 4J33 |
| Certification | ISO9001 | Place of Origin | China |
| High Light | iron nickel alloy ，thermal expansion nickel | ||
4J33 Porcelain Sealed Controlled Expansion Alloy per YB/T 5234-1993
4J33 is a ceramic sealing alloy developed in combination with the characteristics of China's ceramics. 4J33 ceramic sealing alloy is mainly used for matching sealing with ceramics. It is an important sealing structure material in electric vacuum industry.
4J33 alloy has a linear expansion coefficient similar to that of 95%Al2O3 ceramics in the temperature range of -60~600 C.
Curie temperature: 440 degrees C
The alloy has good cold and hot processing properties, and can be made into various complicated parts. Do not heat the material in a sulphur atmosphere.
Before sealing with ceramics, the parts should be annealed, cleaned, nickel-plated, and then welded with silver to the ceramics after metallization.
4J33 has good electroplating properties, and the surface can be plated with gold, silver, nickel, chromium and other metals.
The cutting and processing properties of 4J33 are similar to those of austenitic stainless steels. High speed steel or carbide tools are used for processing. Low speed machining. Coolant can be used in cutting.
4J33 has good grinding performance.
Chemical composition
| Grade | C | Mn | Si | P | S | Ni | Co | Fe |
| ≤ | ||||||||
| 4J33 | 0.05 | 0.50 | 0.30 | 0.020 | 0.020 | 32.0~33.6 | 14.0~15.2 | Rem |
| 4J34 | 0.05 | 0.50 | 0.30 | 0.020 | 0.020 | 28.5~29.5 | 19.5~20.5 | Rem |
Company Details
Business Type:
Manufacturer
Year Established:
2015
Total Annual:
1000-1200
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Suzhou Xunshi New Material Co., Ltd (refered as Xunshi afterwards) is a professional supplier of high performance alloys. Our factory is specialized in manufacturing Nickel alloys & Cobalt alloys for 10+ years，with a company mission to provide a high quality, reliable source for precision... Suzhou Xunshi New Material Co., Ltd (refered as Xunshi afterwards) is a professional supplier of high performance alloys. Our factory is specialized in manufacturing Nickel alloys & Cobalt alloys for 10+ years，with a company mission to provide a high quality, reliable source for precision...
Get in touch with us
Leave a Message, we will call you back quickly!