Invar 36 Round Bar Supplier India – Ni36, Alloy 36, UNS K93600 & 1.3912
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Reliable Invar 36 Round Bar Supplier India – Ni36, Alloy 36, UNS K93600 & 1.3912
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Looking for an Invar 36 Round Bar Supplier India? Discover Ni36, Alloy 36, UNS K93600 and 1.3912 designations, properties, applications and sourcing information.
Invar 36 Round Bar: One Material, Many International Names
When industrial buyers search for Invar 36 Round Bar, they may not always use the same material name.
A European drawing may specify 1.3912, a German specification may refer to Ni36, an American document may use UNS K93600, while an engineering enquiry may simply ask for Alloy 36, FeNi36 or Invar 36.
These designations are associated with the same family of low-expansion iron-nickel material, subject to the exact applicable specification and product requirements.
For procurement teams sourcing precision components, understanding these names is important because searching with only one designation can cause relevant suppliers or technical information to be missed.
Manan Steel & Metals supplies industrial metal products for buyers looking for dependable sourcing of specialty materials and engineering round bars.
Table of Contents
- What Is Invar 36 Round Bar?
- Invar 36 International Designations
- Key Properties of Invar 36
- Applications of Invar 36 Round Bar
- Why Invar 36 Is Used for Precision Components
- Important Points When Purchasing Invar 36
- Invar 36 Round Bar Supplier in Mumbai, India
- Frequently Asked Questions
- Request an Enquiry
What Is Invar 36 Round Bar?
Invar 36 is a nickel-iron alloy developed for applications where low thermal expansion and dimensional stability are important.
The alloy contains approximately 36% nickel with iron as the balance. Its low coefficient of thermal expansion allows components to maintain dimensional stability more effectively when exposed to changes in temperature.
Technical references identify Invar 36 with designations including UNS K93600, W.Nr. 1.3912, Ni36 and Alloy 36.
This makes Invar 36 Round Bar particularly useful for components where small dimensional changes caused by temperature can affect alignment, measurement or performance.
For industrial buyers, the important point is simple: the material designation on the drawing should always be checked against the applicable specification before ordering.
Invar 36 Names Used in Different Markets
One reason specialty-alloy searches can be difficult is that different countries and industries use different designation systems.
| Material name / designation | Naming system or common usage |
|---|---|
| Invar 36 | Common international name |
| Ni36 | European/German material designation |
| Alloy 36 | Common alloy designation |
| FeNi36 | Chemical/material designation |
| UNS K93600 | Unified Numbering System |
| W.Nr. 1.3912 | Werkstoff material number |
| Nilo 36 | Commercial/trade designation |
Technical material databases identify 1.3912 as Ni36 and associate it with Alloy 36, K93600 and common names such as Invar 36 and Nilo 36.
This is why an industrial procurement search should not rely on just one keyword.
Key Properties of Invar 36 Round Bar
The defining characteristic of Invar 36 is its low thermal expansion.
Typical technical references describe Invar 36 as a 36% nickel-iron alloy with very low expansion over relevant temperature ranges. Its physical and mechanical values depend on product form, processing route and applicable specification.
Important characteristics include:
- Low coefficient of thermal expansion
- Good dimensional stability
- Good machinability using suitable procedures
- Good weldability
- Useful strength and toughness
- Suitability for precision engineering
- Performance at cryogenic temperatures
- Availability in round-bar form for machining applications
The combination of these properties makes the material particularly interesting for components where thermal movement must be controlled.
Why Dimensional Stability Matters
Temperature can cause ordinary engineering materials to expand or contract.
In many industrial components this movement is acceptable. However, in precision tooling, measuring equipment, optical systems or components requiring accurate alignment, even a small dimensional change can affect performance.
Invar 36 is used because its low thermal expansion can help minimize such dimensional variation.
This characteristic has led to applications involving:
- Precision tooling
- Measurement equipment
- Optical components
- Aerospace-related components
- Cryogenic equipment
- Instrumentation
- Dimensional-control applications
- Specialized engineering components
Technical references also identify tooling, dies, cryogenic components and laser-related components among Invar 36 applications.
Invar 36 Round Bar Applications
Precision Engineering
Invar 36 Round Bar can be machined into components where dimensional stability is important.
Tooling and Dies
Low thermal expansion can be valuable for tooling that needs to maintain dimensional accuracy during temperature changes.
Optical and Laser Equipment
Precision optical and laser-related systems can require materials with controlled thermal movement. Invar 36 is used in selected applications where this characteristic is beneficial.
Cryogenic Engineering
Invar 36 retains useful dimensional characteristics at low temperatures and is used in certain cryogenic applications.
Aerospace and Specialized Engineering
The alloy’s dimensional stability makes it relevant to specialized aerospace and high-precision engineering applications.
Invar 36 Round Bar Specifications
When purchasing Invar 36 Round Bar, the material name alone should not be the only information provided to the supplier.
A proper enquiry should ideally mention:
| Requirement | Information to specify |
|---|---|
| Material | Invar 36 |
| Alternative designation | Ni36 / UNS K93600 / 1.3912, as applicable |
| Product form | Round Bar |
| Diameter | Required diameter |
| Length | Required length |
| Quantity | Required quantity |
| Condition | As required by drawing/specification |
| Standard | Applicable customer specification |
| Documentation | Material test certificate, if required |
| Application | End-use information where relevant |
This helps reduce confusion when international drawings use different designation systems.
Why Choose Invar 36 Round Bar?
The main reason engineers specify Invar 36 is not simply its nickel content. It is the material’s controlled thermal expansion behaviour.
For precision components, this can provide important advantages:
Dimensional stability: Components can experience less thermal dimensional change than conventional materials.
Precision performance: Controlled expansion can support applications requiring accurate positioning and alignment.
Machining suitability: Invar 36 can be machined using appropriate methods.
Specialized engineering capability: The material is suitable for applications where ordinary engineering steel may not provide the required thermal behaviour.
Internationally recognized designations: Buyers can specify the material using Invar 36, Ni36, UNS K93600, 1.3912 or another applicable designation depending on the governing specification.
What Should Buyers Check Before Ordering Invar 36?
Before placing an order, buyers should verify:
- Exact material designation.
- Applicable ASTM, EN, DIN or customer specification.
- Required diameter and length.
- Required material condition.
- Quantity.
- Surface condition.
- Heat-treatment requirements where applicable.
- Material test certificate requirements.
- Chemical and mechanical requirements.
- Whether the supplied designation matches the drawing.
For international procurement, specifying both the common material name and the relevant numerical designation can make communication clearer.
For example:
Invar 36 Round Bar – UNS K93600 / W.Nr. 1.3912, as per applicable specification.
The exact specification should always be confirmed against the customer’s drawing or purchase requirement.
Invar 36 Round Bar Supplier in Mumbai, India
Manan Steel & Metals supplies specialty metals and engineering materials for industrial procurement requirements.
If your enquiry specifies Invar 36, Ni36, Alloy 36, FeNi36, UNS K93600 or 1.3912, share the required diameter, quantity, length and specification with our team.
Explore our Round Bar product range for additional information on industrial round-bar sourcing.
You can also visit the Manan Steel & Metals website for our broader product portfolio.
Frequently Asked Questions
Is Invar 36 the same as Ni36?
Invar 36 and Ni36 refer to the same general 36% nickel-iron low-expansion alloy designation family. Ni36 is associated with W.Nr. 1.3912, while UNS K93600 is another widely used designation. The exact governing specification should still be confirmed before purchasing.
What is the UNS number for Invar 36?
A commonly used UNS designation for Invar 36 is UNS K93600.
What is the Werkstoff number for Invar 36?
Invar 36 is commonly associated with W.Nr. 1.3912.
Is Alloy 36 another name for Invar 36?
Yes. Alloy 36 is a commonly used designation associated with the same low-expansion nickel-iron material.
Where is Invar 36 Round Bar used?
It is used in precision tooling, measurement-related components, optical and laser applications, cryogenic engineering and specialized aerospace and engineering components where low thermal expansion is important.
What information should I provide when requesting an Invar 36 Round Bar quotation?
Provide the required diameter, length, quantity, material designation, applicable standard or drawing specification and documentation requirements. Including both Invar 36 and the relevant UNS/Werkstoff designation can help avoid specification confusion.
Request Your Invar 36 Round Bar Enquiry
Looking for an Invar 36 Round Bar Supplier India for a precision engineering requirement?
Contact Manan Steel & Metals with your required size, quantity and specification.
Manan Steel & Metals
Shop No. 2, Hira Building,
97 Khetwadi Main Road (Nanubhai Desai Road),
Girgaon, Mumbai – 400004, Maharashtra, India.
Phone: 7977369869
Email: manansteel@gmail.com
Website: https://www.manansteel.com/
For specialty-alloy enquiries, mention the material’s common name plus its international designation wherever available. This gives the supplier a clearer technical reference and helps streamline quotation and material verification.
Useful Technical Reference
For additional material-designation information, buyers can consult established technical material databases and standards organizations such as ASTM International and relevant material standards for the required product form.
Manan Steel & Metals — Industrial Metal Sourcing for Precision Engineering Requirements.