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Nitinol Grade 2 Manufacturer & Supplier in India

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Nitinol Grade 2 is a chromium alloy of nickel-titanium that has been developed for those applications that demand a higher superelastic loading and unloading force than an alloy of only nickel-titanium. It has a controlled addition of chromium, which allows for control of the transformation behavior while enhancing plateau stress and mechanical performance. Sachin Steel produces and provides Nitinol Grade 2 wire for medical device, orthodontic and precision engineering applications. The material is offered in a variety of custom wire sizes, tempers and surface finishes, allowing for specifications based on application and processing needs. Traceability can be provided by Mill Test Certificates and Material Verification may be performed to ASTM F2004: Differential Scanning Calorimetry (DSC). The wire can be used in components such as guidewires, orthodontic archwires and precision springs that need a controlled superelastic response. Sachin Steel is a manufacturer and supplier of Nitinol Grade 2 in India for customised requirements.

Table Of Content

Technical Data

Specifications of Nitinol Grade 2

Feature / Attribute

Standard Specification & Details

Material Designation

Nitinol Grade 2 / Chromium-Doped Nickel-Titanium / NiTiCr

Standard Specifications

ASTM F2004 (DSC Testing), ASTM F2082 (Free Recovery), ASTM E8; Chemistry Exception to ASTM F2063 Base Chemistry

Alloy System

Ternary Superelastic Ni-Ti-Cr Alloy (Chromium-Doped for Higher Plateau Stress)

Product Forms

Wire (Round & Flat Ribbon), Rod / Bar, Custom Straight Lengths, Precision Spools

Size / Diameter Range

0.025 mm to 6.0 mm (Custom sizes and fine wire gauges available upon request)

Delivery States / Temper

Superelastic (Straight Annealed), Cold Worked (As-Drawn), Shape Memory Heat-Set

Surface Finish Options

Black Oxide, Light Oxide (Amber/Blue), Pickled/Etched (Oxide-Free), Centerless Ground, Electropolished

Quality Certification & Testing

ISO 9001:2015 Certified, EN 10204 3.1 / 3.2 Mill Test Certificates with full DSC Transformation Temperature Reporting

Chemical Compositions of Nitinol Grade 2

Element

Nickel (Ni)

Chromium (Cr)

Titanium (Ti)

Carbon (C)

Oxygen (O)

Hydrogen (H)

Nitrogen + Oxygen

Nominal / Limit

54.5 – 57.0 wt%

Controlled Dopant

Balance

≤ 0.050 wt%

≤ 0.050 wt%

≤ 0.005 wt%

≤ 0.050 wt%

Role & Notes

Base Matrix

Active Dopant

Base Matrix

Impurity Limit

Impurity Limit

Impurity Limit

Combined Limit

Mechanical Properties of Nitinol Grade 2

Mechanical Property

Upper Plateau Stress (22°C)

Ultimate Tensile Strength (UTS)

Max Recoverable Strain

Elastic Modulus (Austenite)

Elastic Modulus (Martensite)

Permanent Set (after 8% strain)

Standard Value

> 520 MPa (> 75 ksi)

≥ 1300 MPa (188 ksi)

6.0% - 8.0%

~75 - 85 GPa

~28 - 41 GPa

< 0.5%

Equivalent Grades of Nitinol Grade 2

Designation / Standard Type

Details / Value

Manufacturer System

Fort Wayne Metals NiTi #2

Chemistry Trade Name

NiTiCr (Chromium-Doped Nitinol)

Base Material Specification

ASTM F2063 (with ternary Cr alloy addition)

Primary Thermal Test Standard

ASTM F2004 (DSC Thermal Analysis)

Primary Mechanical Test Standards

ASTM F2082 (Tension Test for Af) / ASTM E8

Common Industry Names

Grade 2 Nitinol, NiTi-Cr Alloy, Ternary Nitinol

Surface Finish of Nitinol Grade 2

Surface Finish

Surface Characteristic

Primary Advantage & Typical Use

Black Oxide

As-drawn thermal oxide layer

Maximum surface toughness, wear resistance, and durability

Light Oxide (Amber/Blue)

Smooth, light heat-treatment film

Optimal surface condition for secondary heat-treating & shape-setting

Pickled / Etched

Clean, oxide-free chemical etch

Uniform matte metallic appearance for clean-room handling

Centerless Ground / Polished

High-precision bright metallic surface

Extreme outer diameter accuracy (± 0.002 mm tolerance)

Size Chart of Nitinol Grade 2

Product Form / Gauge

Diameter Range (Metric)

Diameter Range (Imperial)

Supply / Delivery State

Fine Wire

0.025 mm to 0.50 mm

0.001″ to 0.020″

Precision DIN Spools

Standard Wire

0.50 mm to 3.0 mm

0.020″ to 0.118″

Coils or Straight Lengths

Heavy Gauge Round Bar

3.0 mm to 6.0 mm

0.118″ to 0.236″

Centerless Ground Straight Bars

Custom Profile / Flat Ribbon

Custom Sizes

Custom Sizes

Spools or Cut Lengths
Request a Quote

Applications and Industrial Uses of Nitinol Grade 2

  • Medical Devices and Implants
  • Orthodontic Wires
  • Surgical Instruments
  • Stents and Vascular Devices
  • Actuators and Motion-Control Systems
  • Aerospace Components
  • Robotics and Automation Systems
  • Precision Springs and Couplings
Application Industries

Frequently Asked Questions

Nitinol Grade 2 is a nickel-titanium shape-memory alloy known for its superelasticity, shape recovery, and high flexibility.

Nitinol Grade 2 is primarily made of nickel and titanium, with a near-equiatomic composition.

It is used for medical devices, orthodontic wires, stents, actuators, precision springs, and aerospace components.

Yes, Nitinol Grade 2 can exhibit superelastic behavior when properly processed and heat treated.

Grade 1 is the base binary NiTi alloy. Grade 2 adds a controlled chromium dopant, raising upper plateau stress above 520 MPa for applications needing a stronger superelastic loading/unloading force.

Nitinol generally melts at approximately 1,300°C to 1,310°C (2,372°F to 2,390°F), depending on its exact composition.

Yes, Nitinol Grade 2 has good corrosion resistance due to the protective titanium oxide layer that forms on its surface.

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