Welcome to Jiangsu DLX alloy Co., Ltd.
Email:sales8@dlx-alloy.com Mobile/Whatsapp:+86 199 0611 9641
Specialized manufacturer of high temperature alloys, precision alloys and Incoloy,over 20 years.
Welcome to Jiangsu DLX alloy Co., Ltd.
Email:sales8@dlx-alloy.com Mobile/Whatsapp:+86 199 0611 9641
Specialized manufacturer of high temperature alloys, precision alloys and Incoloy,over 20 years.
Whatsapp：+86 199 0611 9641
Email：sales8@dlx-alloy.com
Add：NO.32 West Taihu Road, Xinbei District, Changzhou, Jiangsu,China
Precision Alloy Sheet
Product Details
Overview
4J36, also known globally as Invar 36, is a precision-controlled expansion alloy consisting of 36% nickel and the rest iron. It is widely used in high-precision components due to its extremely low coefficient of thermal expansion (CTE), making it an ideal choice for aerospace, optics, and cryogenics.
Product Features
Very low thermal expansion from -100°C to 200°C
High dimensional stability over temperature changes
Retains mechanical strength at cryogenic temperatures
Good weldability, forming and machining characteristics
Available in multiple customized sheet formats
Applications
4J36 is critical for:
Aerospace structural components and gyroscope frames
Optical instruments and telescopic mounts
Laser measurement tools and temperature-sensitive housings
Precision standards, metrology devices, and pendulums
Cryogenic support fixtures and LNG storage systems
Working Mechanism
The alloy’s unique thermal behavior comes from the interplay between nickel and iron atoms. The low expansion rate is due to magnetic ordering (Invar effect), which stabilizes atomic spacing during thermal fluctuations.
Technical Data Sheet
| Property | Value |
|---|---|
| Grade | 4J36 (Invar 36) |
| Density | 8.1 g/cm³ |
| Chemical Composition | Ni ~36%, Fe balance |
| Coefficient of Thermal Expansion (20–100°C) | ~1.2 ×10⁻⁶/°C |
| Tensile Strength | ≥ 450 MPa |
| Yield Strength | ≥ 240 MPa |
| Hardness | ≤ 200 HB |
| Working Temperature Range | -200°C to +200°C |
| Form Available | Sheet / Plate / Custom Cut |
Trusted by aerospace and optical industries worldwide
Excellent processability and consistent expansion control
Available in precise thickness, width, and flatness
Full certifications and material traceability offered
FAQ:
What is your working time? Monday-Saturday : 7:30AM-17:00PM (Beijing time, GMT+08.00) We have public holiday during May.1-3,
Oct.1-7 and Chinese New Year holiday . Pls email us during our holiday if u have any question.
Do you provide free samples?
Yes,we can provide a free sample for testing,buyer should bear all the shipping costs.
What is your payment terms?
T/T,L/C,D/A,D/P,Western Union,MoneyGram,Paypal
What is the lead time?
Usually sample lead time is 7 days after payment has been confirmed.
