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Gangsteel Group is a leading global supplier of Alloy 36, also known as Invar 36 or UNS K93600, offering premium Alloy 36 sheet, Alloy 36 plate, Invar 36 round bar, and custom-fabricated components.
Alloy 36is an iron-nickel alloy with 36% nickel, designed for exceptionally low thermal expansion, ideal for precision instruments, aerospace, and cryogenic applications.
This guide explores the Invar 36 composition, Alloy 36 material properties, applications and why Gangsteel is your trusted source for Alloy 36 sheet, Invar 36 plate, and round bar at competitive Invar 36 price.
Alloy 36(UNS K93600), or Invar 36, is an iron-nickel alloy with 36% nickel, engineered for minimal thermal expansion over a wide temperature range (-250°C to 200°C). Its low coefficient of thermal expansion (CTE) makes Alloy 36 sheet ideal for precision components in aerospace, electronics, and cryogenic systems. Unlike corrosion-resistant alloys like Alloy 31, Alloy 36 prioritizes dimensional stability over corrosion resistance, though it offers moderate resistance to atmospheric corrosion.
Alloy 36(UNS K93600) has a lower CTE (1.2 µm/m·K) than Alloy 42 (5.3 µm/m·K), making Alloy 36 sheet preferred for high-precision applications like telescope mirrors, while Alloy 42 is used in less stringent applications.
Gangsteel’s Alloy 36 products comply with international standards:
Note: Products are supplied with mill test certificates and tested per DNV, BV, or SGS standards, ensuring compliance with Invar 36 chemical composition and Alloy 36 material properties.
Gangsteel offers a comprehensive range of Alloy 36 products tailored to UNS K93600 specifications, with a focus on Alloy 36 sheet:
Note: Custom sizes and finishes are available. Contact Gangsteel for bespoke Alloy 36 sheet solutions.
The Invar 36 chemical composition is optimized for low thermal expansion, as per ASTM F1684:
Element |
Fe |
Ni |
Mn |
Si |
C |
P |
S |
Cr |
Co |
---|---|---|---|---|---|---|---|---|---|
% |
Bal. |
35.0-37.0 |
≤0.5 |
≤0.25 |
≤0.05 |
≤0.02 |
≤0.015 |
≤0.2 |
≤0.5 |
Note: Controlled nickel content ensures Alloy 36 material’s low CTE, making Alloy 36 sheet ideal for precision applications compared to Alloy 625.
The mechanical properties of Alloy 36 material ensure reliability for Alloy 36 sheet, Invar 36 plate, and round bar, as per ASTM F1684 (annealed condition):
Property |
Value at 20°C |
Value at 400°F (204°C) |
Description |
---|---|---|---|
Yield Strength |
240-300 MPa (35-44 ksi) |
~200 MPa (29 ksi) |
Adequate strength for precision applications |
Tensile Strength |
400-550 MPa (58-80 ksi) |
~350 MPa (51 ksi) |
Ensures durability in stable environments |
Elongation |
~30% |
~35% |
High ductility for fabrication |
Hardness |
~70 HRB |
- |
Supports machinability |
Note: Properties vary with heat treatment. For detailed mechanical properties of Alloy 36 sheet, contact Gangsteel for a datasheet.
Alloy 36(UNS K93600) is comparable to other low-expansion alloys:
Material |
Standard |
Description |
---|---|---|
ASTM F1684, UNS K93600 |
Low thermal expansion alloy |
|
Alloy 42 |
UNS K94100 |
Higher CTE for less stringent applications |
UNS N04400 |
Corrosion-resistant, higher CTE |
|
UNS N06625 |
Corrosion-resistant, high CTE |
|
UNS N10276 |
Corrosion-resistant, high CTE |
Note: Alloy 36 sheet excels in precision applications, offering advantages over Alloy K500 in dimensional stability.
9. Applications of Alloy 36 Sheet
Note: Alloy 36 is optimized for dimensional stability, offering advantages over Alloy HX in precision applications.
Note: Invar 36 price is lower than corrosion-resistant alloys like Alloy 59 due to simpler composition. Contact Gangsteel for precise quotes.
For inquiries about Alloy 36, Alloy 36 sheet, Invar 36 plate, Invar 36 round bar, or to request a quote for Invar 36 price or a mechanical properties datasheet, contact Gangsteel Group’s sales team. Trust Gangsteel for high-quality Alloy 36 material tailored to your project’s needs, backed by expertise and reliability as leading Alloy 36 suppliers!
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