Wuxi Nickel New Material Co., Ltd
| Payment Terms | L/C,T/T,Western Union |
| Supply Ability | 300 Ton per Month |
| Delivery Time | 2-30days |
| Packaging Details | Wooden Crate |
| Primaryuse | Thermal Expansion Applications |
| Coefficientofthermalexpansion | High |
| Type | Nickel Strips |
| Testing Facility | Accept third party testing such as SGS |
| Applications | Used in precision instruments, thermostats, and bimetallic strips |
| Yield Strength | 240-450 MPa |
| Magneticproperties | Non-magnetic or weakly magnetic |
| Thermal Conductivity | 10-20 W/mK |
| Brand Name | NikTech |
| Model Number | 4J28 |
| Certification | ISO 9001:2015 |
| Place of Origin | China |
View Detail Information
Explore similar products
Expansion 4J50 Pipes - Controlled Expansion Alloy Pipes with Controlled Thermal
4J50 Expansion Alloys 590–700 MPa Tensile Excellent Formability Thermal
Low Expansion Ceramic Seal Expansion Alloys 4J33 Strips 500-1000 MPa
4J29 Expansion Alloys Precision Expansion Control And Vacuum Seal
Product Specification
| Payment Terms | L/C,T/T,Western Union | Supply Ability | 300 Ton per Month |
| Delivery Time | 2-30days | Packaging Details | Wooden Crate |
| Primaryuse | Thermal Expansion Applications | Coefficientofthermalexpansion | High |
| Type | Nickel Strips | Testing Facility | Accept third party testing such as SGS |
| Applications | Used in precision instruments, thermostats, and bimetallic strips | Yield Strength | 240-450 MPa |
| Magneticproperties | Non-magnetic or weakly magnetic | Thermal Conductivity | 10-20 W/mK |
| Brand Name | NikTech | Model Number | 4J28 |
| Certification | ISO 9001:2015 | Place of Origin | China |
Expansion K93603 / 4J28 Pipes are precision iron-nickel-cobalt alloy pipes engineered for applications where extremely low thermal expansion is critical. Known internationally as Super Invar Alloy, this material was developed to achieve significantly lower dimensional change than conventional Invar alloys during temperature fluctuations.
The addition of cobalt optimizes the crystal structure and reduces thermal expansion across a practical operating temperature range, making Expansion K93603 / 4J28 Pipes an ideal choice for precision engineering systems. These pipes are widely utilized in aerospace tooling, optical platforms, metrology equipment, semiconductor production systems, and scientific instrumentation where dimensional accuracy directly influences performance.
| Parameter | Value |
|---|---|
| Outside Diameter | 6 mm - 168 mm |
| Wall Thickness | 0.5 mm - 15 mm |
| Length | Up to 6000 mm |
| Surface | Bright Annealed, Pickled |
| Form | Seamless Pipe / Welded Pipe |
| Standards | ASTM F1684, UNS K93603, GB/T 15002 |
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 31.5 - 33.0 |
| Cobalt (Co) | 4.0 - 6.0 |
| Iron (Fe) | Balance |
| Carbon (C) | ≤ 0.05 |
| Manganese (Mn) | ≤ 0.50 |
| Silicon (Si) | ≤ 0.30 |
| Phosphorus (P) | ≤ 0.02 |
| Sulfur (S) | ≤ 0.02 |
| Property | Value |
|---|---|
| Tensile Strength | ≥ 490 MPa |
| Yield Strength | ≥ 240 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 160 HB |
| Property | Value |
|---|---|
| Density | 8.15 g/cm³ |
| Melting Range | 1425 - 1450°C |
| Thermal Conductivity | 13.5 W/m*K |
| Elastic Modulus | 141 GPa |
| Electrical Resistivity | 0.78 µΩ*m |
| Mean Coefficient of Thermal Expansion (20-100°C) | Approx. 0.6 × 10⁻⁶/K |
Precision Measuring Equipment: Used in metrology frames, calibration systems, and coordinate measuring devices.
Aerospace Tooling: Applied in precision fixtures and thermal-stable aerospace structures.
Optical Systems: Suitable for telescope supports, laser equipment, and optical alignment assemblies.
Semiconductor Manufacturing: Used in wafer processing equipment and precision positioning systems.
Scientific Instrumentation: Applied in vacuum devices and laboratory equipment requiring dimensional stability.
Their ultra-low thermal expansion coefficient helps maintain dimensional accuracy under temperature variation.
Yes. UNS K93603 is internationally known as Super Invar Alloy and corresponds closely to Chinese grade 4J28.
They are widely used in aerospace, optics, semiconductor manufacturing, metrology, and scientific equipment.
Yes. The alloy offers good machinability for precision components and assemblies.
Because they minimize dimensional changes caused by temperature fluctuations, improving measurement accuracy.
Company Details
Business Type:
Manufacturer
Year Established:
2002
Total Annual:
20000000-80000000
Employee Number:
50~500
Ecer Certification：
Verified Supplier
Wuxi Nickel New Material Co., Ltd. (Wuxi NikTech) is a high-tech enterprise integrating the production, manufacturing, and research & development of specialty alloy materials. Located in Wuxi, Jiangsu Province, the company specializes in precision alloys, titanium alloys, high-temperature alloys... Wuxi Nickel New Material Co., Ltd. (Wuxi NikTech) is a high-tech enterprise integrating the production, manufacturing, and research & development of specialty alloy materials. Located in Wuxi, Jiangsu Province, the company specializes in precision alloys, titanium alloys, high-temperature alloys...
Get in touch with us
Leave a Message, we will call you back quickly!