DIPTI METAL INDUSTRIES
Leading AMS 7728 Stockist, AMS 7728 Supplier & AMS 7728 Exporter of Invar 36 Sheet in Mumbai, India
Dipti Metal Industries (A KMR Group Company) is a premier global AMS 7728 Supplier, AMS 7728 Exporter, and specialized AMS 7728 Stockist of Invar 36 (Nickel-Iron Alloy) Sheet, Strip, and Plate. AMS 7728 covers UNS K93600, an alloy characterized by an exceptionally low coefficient of thermal expansion (CTE). It is the material of choice for aerospace composite tooling, laser components, and precision instruments where dimensional stability across temperature fluctuations is non-negotiable. Our AMS 7728 materials are supplied from Mumbai, India with original mill certification and full aerospace compliance.
Explore Other High-Performance Nickel Grades
AMS 7728 (Invar 36) AMS 4511 (Monel 400) AMS 5540 (Inconel 600) AMS 5596 (Inconel 718) AMS 5536 (Hastelloy X)🏭 Industrial Authority in Low-Expansion Nickel Alloys
As a leading AMS 7728 Supplier in Mumbai, Dipti Metal Industries specializes in Invar 36 solutions for high-precision engineering. AMS 7728 is critical for the production of Carbon Fiber Reinforced Plastic (CFRP) parts in the aerospace industry, as its thermal expansion matches the composite material, preventing part distortion during curing.
Aerospace & Tooling Compliance
- Original EN 10204 3.1 Mill Test Certificates (MTC)
- Rigid control over Nickel (36%) content for CTE stability
- Thermal expansion coefficient verification (Cryogenic to 200°C)
- AS9100 standard traceability for Defense and Aviation
The Dipti Metal Advantage
- Ready inventory of AMS 7728 Invar 36 Plate in Mumbai
- Precision Laser and Waterjet cutting for complex tooling profiles
- Expertise in managing large-format plates for mold manufacturing
- Sea-worthy and air-safe export packaging (VCI Protected)
📘 Technical Specifications: AMS 7728 (Invar 36)
AMS 7728 (UNS K93600) is a nickel-iron alloy containing 36% nickel. It maintains nearly constant dimensions over the range of normal atmospheric temperatures.
Chemical Composition (%)
| Element | Min | Max |
|---|---|---|
| Nickel (Ni) | 35.00 | 37.00 |
| Iron (Fe) | Balance | |
| Manganese (Mn) | - | 0.60 |
| Silicon (Si) | - | 0.35 |
| Carbon (C) | - | 0.05 |
| Cobalt (Co) | - | 0.50 |
Mechanical Properties (Annealed)
| Property | Typical Value | Unit |
|---|---|---|
| Tensile Strength (UTS) | ≥ 450 | MPa |
| Yield Strength (0.2% Offset) | ≥ 240 | MPa |
| Elongation | ≥ 30 | % |
| Hardness | ≤ 160 HBW | Typical |
| Thermal Expansion (CTE) | ~1.2 x 10⁻⁶ | /°C (20-100°C) |
AMS 7728 exhibits a "curie point" at 280°C (535°F), above which its expansion rate increases.
AMS 7728 Product Forms & Stock Availability
- AMS 7728 Sheets (0.5mm to 3.0mm thickness)
- AMS 7728 Plates (Tooling grade, 6mm to 100mm)
- AMS 7728 Precision Foil and Strip Coils
- Invar 36 Ground Blocks for optical mounts
- Large format plates for Aerospace Molds
- Waterjet Cutting: Zero-stress cold cutting for plate shapes
- Flattening: Superior flatness for precision instrumentation
- Surface Finishing: Bright Annealed or Satin finishes
- Custom Blanks: Circular and rectangular cut-to-size pieces
Prime Applications of AMS 7728 (Invar 36)
- Aerospace: Composite curing molds (CFRP) and aircraft structural parts.
- Optical Systems: Laser platforms, telescopes, and lens mounts.
- Electronics: Shadow masks and lead frames for high-stability circuits.
- Cryogenics: LNG tanker membranes and liquefied gas transport piping.
- Metrology: Measurement standards and precision pendulums.
Global Export Reach for AMS 7728 (75+ Countries)
As an established AMS 7728 Exporter, we provide door-to-port delivery for high-precision alloys worldwide.
- UAE: Dubai, Abu Dhabi
- Saudi Arabia: Riyadh, Jubail
- Oman: Muscat
- Qatar: Doha
- Kuwait & Bahrain
- USA: Seattle, Wichita, Los Angeles
- Europe: France (Toulouse), UK (Derby), Germany (Munich)
- Asia: Singapore, Japan (Nagoya), South Korea
- Oceania: Australia (Melbourne, Brisbane)
- Brazil (São José dos Campos)
Inquire for AMS 7728 (Invar 36)
Looking for a reliable AMS 7728 Stockist? Fill out the form below or contact us via WhatsApp for immediate pricing and lead times.
📍 Contact Dipti Metal Industries
Dipti Metal Industries (KMR Group)
No.9, Shreepati Castle, D-1, 10–11th Khetwadi Back Road, Mumbai – 400004, India
Sales: +91-22-66381301
WhatsApp: +91-9975266499
Email: info@diptimetal.com