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Nitinol Grades Manufacturer & Supplier in India

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Nitinol Alloy Grades are selected based on the chemical composition of the alloy, transformation temperatures, mechanical properties, and usage environment. Changes in chemical composition of NiTi, heat treatment, and cold work influence the shape memory behavior, superelasticity, flexibility, and fatigue. Consideration of these factors is significant for medical parts, thermal actuators, aerospace systems, precision engineering applications and more. Sachin Steel Centre is a manufacturer and supplier of Nitinol Grades in India, providing products such as Nitinol Alloy, NiTi wire, rod, bar, tube, sheet and customized products. Project specific material requirements are met with dimensional options, technical documentation and quality-focused supply. Our solutions with Nitinol are tailored to the different performance requirements of our customers in special industrial and engineering applications.

Table Of Content

Technical Data

Specifications of Nitinol Grades

Attribute

Specification Details

Governing Standards

ASTM F2063 (Medical Implants/Devices), ASTM F2082 (Af Testing), ASTM F2004 (DSC Testing)

Designations

NiTi, Nitinol, Nickel-Titanium Alloy, UNS N01555

Available Forms

Wire, round bar, rod, tubing, ribbon, sheet, plate, custom coils

Standard Execution

Cold drawn, centerless ground, oxide (black/amber), or bright polished surface

Size Range

Wire: ⌀ 0.0127 mm to 6.0 mm; Bars/Rods: ⌀ 1.0 mm to 30.0 mm

Tolerances

ISO h7/h8 for ground bars; ± 0.0004″ (± 0.01 mm) for precision wire

Certification

EN 10204 3.1 Mill Test Certificate (MTC) with DSC transformation curve

Chemical Compositions of Nitinol Grades

Element

Nickel (Ni)

Titanium (Ti)

Carbon (C)

Oxygen (O)

Nitrogen (N)

Hydrogen (H)

Iron (Fe)

Chromium (Cr)

Limit

54.5 – 57.0

Balance

0.05 max

0.05 max

0.01 max

0.005 max

0.05 max

0.01 max (in binary NiTi)

Mechanical and Physical Properties of Nitinol Grades

Property

Superelastic Condition (Austenite)

Shape Memory Condition (Martensite)

Tensile Strength (Rm)

≥ 800 – 1,500 MPa

≥ 800 – 1,000 MPa

Upper Plateau Stress

~350 – 500 MPa

N/A (Deforms under low stress)

Elongation at Failure (A5)

≥ 10 – 15%

≥ 10 – 15%

Max Recoverable Strain

6% – 8%

6% – 8% (via thermal recovery)

Density

6.45 g/cm³

6.45 g/cm³

Melting Range

1,300°C – 1,310°C

1,300°C – 1,310°C

Different Grades of Nitinol

Grade / Type

Primary Behavior

Typical Af Range (Austenite Finish)

Primary Applications

Nitinol Grade 1 (Superelastic)

Superelastic at room/body temp

0°C to 20°C (18°C typ.)

Medical guidewires, stents, stone retrieval baskets, orthodontic archwires

Nitinol Grade 2 (Ternary Cr-Doped)

Superelastic with higher plateau stress

-10°C to 10°C

High-force medical instruments, high-fatigue components

Nitinol Body-Temp Grade

Superelastic / Shape Memory at body temp

30°C to 38°C

Thermally activated vascular stents, orthopedic staples, self-expanding implants

Nitinol Grade 5 (Shape Memory)

Thermal shape memory actuation

45°C to 95°C

Thermal actuators, safety shutoff valves, mechanical couplers, switches

High-Temp Shape Memory Grade

High-temperature actuation

> 95°C (95°C – 115°C)

Industrial steam valves, aerospace latches, high-heat sensors

Equivalent Grades of Nitinol

Property / System

Specification / Designation

ASTM Specification

ASTM F2063 (Medical Grade Wrought NiTi)

UNS Number

UNS N01555

Chemical Formula

NiTi (approx. 55 wt% Ni / 45 wt% Ti)

Common Names

Nitinol, Nickel-Titanium Alloy, Superelastic Wire, Shape Memory Alloy
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Applications and Industrial Uses of Nitinol Grades

  • Medical implants and orthopedic devices
  • Cardiovascular stents and guidewires
  • Orthodontic archwires
  • Surgical instruments
  • Thermal actuators and valves
  • Aerospace actuation systems
  • Robotic and precision motion components
  • Automotive temperature-controlled actuators
Application Industries

Frequently Asked Questions

Nitinol grades vary by composition, transformation temperature, and mechanical properties. Commonly specified Nitinol materials include different nickel-titanium compositions and thermomechanical conditions rather than one universal Grade 1-Grade 5 system.

The difference depends on the supplier’s specification because Grade 1 and Grade 2 are not universal ASTM Nitinol designations. Their composition, transformation temperature, and mechanical properties should be checked against the applicable specification.

Nitinol designed to have an austenite finish temperature below its operating temperature can exhibit superelasticity. The specific grade or material condition should be selected based on its transformation-temperature requirements.

Yes. ASTM F2063 covers wrought nickel-titanium shape-memory alloys used for medical devices and surgical implants. It specifies chemical, mechanical, and other material requirements rather than establishing a universal numbered grade system.

Select Nitinol based on the required transformation temperature, shape-memory or superelastic behavior, mechanical properties, corrosion resistance, application temperature, and required form.

Yes. Alloy composition, surface condition, processing, and heat treatment can affect Nitinol’s corrosion behavior. The material should be evaluated against the specific service environment.

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