Kanakratna Steelage Private Limited

 Introduction

Fasteners are among the most fundamental components in mechanical engineering. Whether in aerospace engines, marine vessels, oil rigs, or nuclear plants, the reliability of the joint often depends on the quality of the nut and bolt used. While carbon steel and stainless steel fasteners dominate in general applications, highly demanding environments—where extreme heat, pressure, and corrosion are constant threats—require far superior materials.

This is where Inconel nut bolts come into play. Made from Inconel, a family of nickel-chromium-based superalloys, these fasteners are engineered for extreme performance. Unlike ordinary alloys that lose strength at elevated temperatures or corrode in aggressive media, Inconel retains its mechanical integrity, oxidation resistance, and corrosion resistance even in environments as harsh as deep-sea saltwater, acidic reactors, and jet turbines.

Chemical Composition

Below is a typical chemical composition of popular Inconel alloys used in nuts and bolts.

 

 Physical Properties of Inconel Mechanical Properties of Inconel Nut Bolts Heat Resistance

Unlike stainless steels that lose strength above 600 °C, Inconel nut bolts remain strong and stable up to 1100 °C. They also resist thermal fatigue and creep rupture, making them suitable for gas turbines, jet engines, and nuclear reactors.

 Testing & Quality Control

 

• PMI Testing (Positive Material Identification).

• Tensile & Hardness Testing.

• Corrosion Testing (ASTM G28, G48).

• Non-Destructive Testing (UT, RT, MPI).

• Proof Load Testing for bolts.

Additional Information:

• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

 Introduction

Fasteners are the backbone of mechanical assemblies, holding together critical equipment and structures across industries. Among various materials used for manufacturing fasteners, Inconel nuts and bolts stand out due to their exceptional mechanical strength, high-temperature stability, and unparalleled corrosion resistance.

Inconel, a nickel-chromium-based superalloy, is specifically designed for extreme environments. Inconel fasteners are widely used in aerospace, marine, oil & gas, chemical processing, nuclear power, and automotive industries. Unlike stainless steels, which may suffer from chloride stress corrosion cracking and oxidation, Inconel provides long-lasting performance under high stress, extreme heat, and chemically aggressive conditions.

Chemical Composition of Common Inconel Grades for Fasteners

 

Physical Properties of Inconel Alloys Mechanical Properties of Inconel Nuts & Bolts
Heat Resistance

• Stable at cryogenic to 1100 °C.

• Withstands thermal cycling without cracking.

• Used in gas turbines, jet engines, nuclear reactors.

Testing & Quality Control

• PMI Testing (Positive Material Identification).

• Hardness Testing.

• Tensile Testing.

• Impact Testing (Charpy).

• Corrosion Tests (ASTM G48, G28).

• NDT (UT, RT, MPI).

• Hydrostatic/Proof Load Testing for bolts.

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: READY STOCK - 2 TO 4 DAYS
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

IntroductionTitanium plates are flat-rolled products made from titanium and its alloys, widely recognized for their exceptional strength-to-weight ratio, excellent corrosion resistance, and biocompatibility. These plates are used across a variety of demanding industries such as aerospace, chemical processing, medical implants, marine engineering, power generation, and defense.

Titanium plates are manufactured in commercially pure (CP) titanium grades and titanium alloys like Grade 5 (Ti-6Al-4V), Grade 7 (Ti-Pd alloy), and others, each tailored for specific applications. Their ability to withstand harsh environments, high stress, and extreme temperatures makes them indispensable in both industrial and strategic sectors.

This article provides a detailed 4000-word guide on Titanium Plates, including composition, grades, properties, applications, standards, fabrication techniques, suppliers, pricing, and market trends.

Chemical Composition

Example (Grade 5 Titanium, Ti-6Al-4V):

• Aluminum (Al): 5.5 – 6.75%

• Vanadium (V): 3.5 – 4.5%

• Iron (Fe): ≤ 0.40%

• Oxygen (O): ≤ 0.20%

• Carbon (C): ≤ 0.08%

• Nitrogen (N): ≤ 0.05%

• Hydrogen (H): ≤ 0.015%

• Titanium (Ti): Balance

Mechanical Properties Physical Properties

• Density: 4.51 g/cm³ (60% of steel’s density)

• Melting Point: 1668 °C

• Thermal Conductivity: 7.2 W/m·K

• Electrical Resistivity: 420 nΩ·m

• Elastic Modulus: 105 – 120 GPa

• Magnetism: Non-magnetic

Surface Finishes

• Hot rolled

• Cold rolled

• Pickled

• Polished

• Sandblasted

Quality Testing & Certifications

• Mechanical Testing: Tensile, hardness, impact.

• Non-Destructive Testing: Ultrasonic, X-ray.

• Corrosion Testing: ASTM G28.

• PMI Testing: Ensures correct alloy.

Packaging & Delivery

• Export packaging with wooden crates.

• Plastic and anti-rust wrapping.

• Custom cut plates for industrial needs.

Applications of Titanium Plates
Aerospace & Defense
Medical Industry
Marine Industry
Chemical Processing
Energy & Power

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

Introduction

In high-performance industries, where corrosion resistance, heat tolerance, and mechanical strength are critical, conventional materials such as carbon steel or stainless steel often fail. For such extreme service conditions, Inconel couplings provide unmatched reliability.

Inconel couplings are mechanical connectors made from Inconel alloys (primarily nickel-chromium-based superalloys) that join pipes, tubes, or shafts while withstanding high pressure, elevated temperature, and corrosive environments. These couplings are widely used in oil & gas, chemical processing, aerospace, nuclear, and marine engineering.

The reason for choosing Inconel over other alloys lies in its unique combination of strength, oxidation resistance, and corrosion resistance across a wide range of environments—from cryogenic temperatures to over 1100 °C.

Chemical Composition of Inconel AlloysExample: Inconel 625 Coupling (UNS N06625)

 

Physical and Mechanical Properties Physical Properties of Inconel Couplings

• Density: ~8.47 g/cm³ (varies with grade)

• Melting Point: 1350–1400 °C

• Thermal Conductivity: ~9.8 W/m·K at room temp

• Electrical Resistivity: 1.3 µΩ·m

• Magnetic Permeability: Non-magnetic in annealed condition

Mechanical Properties (Typical for Inconel 625 Coupling)

• Tensile Strength: 827 MPa

• Yield Strength (0.2% offset): 414 MPa

• Elongation: 30–40%

• Hardness: 85–95 HRB

• Creep Resistance: Excellent at >650 °C

Standards and Specifications

Inconel couplings are produced according to various global standards:

• ASTM B564 – Forged Inconel couplings and fittings.

• ASME B16.11 – Forged fittings, socket-weld, and threaded.

• MSS-SP-95 – Swaged couplings.

• API 6A / 16A – Oil & gas applications.

• NACE MR0175/ISO 15156 – Sour service suitability.

• UNS Designations – N06600, N06625, N07718, etc.

 Quality Testing of Inconel Couplings

• Hydrostatic Testing – Pressure resistance.

• Non-Destructive Testing (NDT) – Ultrasonic, X-ray, dye penetrant.

• Hardness and Tensile Testing – Ensuring mechanical properties.

• Dimensional Inspection – Tolerances as per ASME.

• Corrosion Testing – ASTM G28 method.

Additional Information:

• Production Capacity: 50 TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes

 Introduction

Monel 400 fasteners are high-performance fastening components manufactured from Monel 400, a solid-solution alloy primarily composed of nickel (about 63%) and copper (about 28–34%) with trace amounts of iron, manganese, and silicon. Known for their exceptional resistance to seawater, acidic environments, and alkaline media, Monel 400 fasteners are widely used in marine, chemical processing, oil & gas, and aerospace industries.

These fasteners include bolts, nuts, screws, washers, studs, and other mechanical joining elements. Monel 400 is also referred to as Alloy 400, UNS N04400, WNR 2.4360 / 2.4361, and it is one of the most versatile corrosion-resistant nickel-copper alloys available.

 Chemical Composition of Monel 400 (UNS N04400)

The strength and corrosion resistance of Monel 400 fasteners are directly derived from their chemical composition:

 

Testing & Quality Control

Before dispatch, Monel 400 fasteners undergo strict quality testing:

• Mechanical Tests: Tensile, yield, hardness, elongation.

• Corrosion Tests: Salt spray test, pitting resistance test.

• NDT Tests: Ultrasonic, radiography, dye penetrant.

• Dimensional Inspection.

Packaging

• Polybags, bubble wrap, wooden boxes.

• Custom packaging for offshore or export requirements.

Testing & Quality Control

Before dispatch, Monel 400 fasteners undergo strict quality testing:

• Mechanical Tests: Tensile, yield, hardness, elongation.

• Corrosion Tests: Salt spray test, pitting resistance test.

• NDT Tests: Ultrasonic, radiography, dye penetrant.

• Dimensional Inspection.

Additional Information:

• Production Capacity: IN TONS
• Delivery Time: READY STOCK
• Packaging Details: The packaging of the product is done using an effective method of packaging. It all includes- • Shrink-wrapping • Bubble wrapping • Carton boxes • Wooden crates/pallets/boxes