Incoloy 925 Fasteners

Incoloy 925 Fasteners – High-Strength Alloy Solutions for Extreme Environments

When you have to deal with toxic, high-pressure, and high-temperature conditions, you need screws that you can count on. Incoloy 925 Fasteners are made to work in tough industrial settings where regular materials just don't cut it. Nickel-iron-chromium alloy bolts that can become stronger over time have great mechanical strength and corrosion protection. Our goods give your projects the dependability and safety they need, whether you work in chemical processing plants, offshore marine platforms, or oil and gas research. We make precision screws at TSM Technology that meet the strictest international standards and work well for a long time in the worst circumstances.

What are the Incoloy 925 Fasteners?

Our goods are high-performance nickel-based alloy parts made for putting things together very carefully. They have the high strength that comes from a precipitation hardening heat process and the ability to prevent corrosion of nickel-chromium metals. These screws are better at resisting chloride stress-corrosion cracking and sulphide stress cracking than austenitic stainless steels. This makes them perfect for settings with sour gases and seawater.

Specification

Physical and Chemical Properties

Product Standards

• ASTM B805 – Bar stock specification
• NACE MR0175/ISO 15156 – Sour service environment compliance
• ASTM E8 – Mechanical property testing
• ASTM G28 – Intergranular corrosion testing

What is the Features of Incoloy 925 Fasteners?

• Strength: Age-hardened to tensile forces of more than 150 ksi
• Chloride Resistance: A lot of nickel stops stress-corrosion cracks.
• Sour Gas Compatibility: NACE guidelines say it's safe for H2S settings.
• Better PREN value than 316/316L stainless steel for pitting resistance
• Stable at High Temperatures: Keeps its shape up to 540°C
• Resistance to sulphide stress cracking is important for oil and gas tools used in the ground.

Factory

The factory run by TSM Technology is state-of-the-art and has combined production lines for melting, casting, machining, heat treatment, and testing. Following the rules set by ISO 9001, AS9100D, and AS9120, our quality control system makes sure that every fastener meets the needs of the aircraft and petroleum industries.

Application

These important areas are where Incoloy 925 Fasteners work reliably:

Downhole tools, wellhead parts and tool joints in sour gas wells are used for oil and gas exploration.

Undersea mooring systems, splash zones, and offshore platforms are all types of marine engineering.

Making chemicals: valves, pumps, and systems that work with hot acids

Power generation: turbine parts and high-pressure steam systems

Building fixings in the aerospace industry need to be strong and light.

Production and Processing Technology

Our production incorporates advanced metallurgical techniques:

• Vacuum Induction Melting (VIM): Makes sure that the makeup is the same.
• For better mechanical qualities, hot forging improves the structure of the grains.
• When it comes to improving wear resistance, thread rolling is better than cutting.
• Controlled formation of Ni₃(Ti,Al) phases during solution annealing and age hardening

Quality Inspection

We implement multi-stage quality control:

✅ PMI Testing – Verify 42% nickel base composition

✅ Mechanical Testing – Tensile, yield, elongation per ASTM E8

✅ Hardness Testing – Ensure compliance with NACE limits (≤38 HRC)

✅ Corrosion Testing – ASTM G28 intergranular corrosion assessment

✅ Thread Gauging – Go/No-Go gauges ensure perfect fit

✅ Documentation – Full traceability with MTC, QAC, and ITP reports

Hardness Testing

Hardness Testing

Thread Gauging

Thread Gauging

Why Choose TSM Technology?

14+ Years of Alloy Expertise – Serving 70+ countries globally

AS9100D Certified – Aerospace-grade quality systems

50,000㎡ Modern Facility – Equipped with 100+ precision machines

200,000 Pieces/Month Capacity – Reliable supply for large projects

Complete Testing Lab – Ultrasonic, radiographic, eddy current testing available

Fast Delivery – 20-45 days with stock availability for common sizes

Custom Engineering Support – Technical consultation from order to delivery

Shipping and packages

Inside the box are anti-corrosion paper and plastic caps to protect the threads.
Outside packaging: plywood boxes or steel crates for air and sea freight
Labelling: Every box has a material approval and a code that can be used to track it.
Logistics: we ship all over the world through our hub in Hong Kong and offer door-to-door service.

FAQ

Q1: What is the primary difference between Incoloy 825 and the products?

A: Both have about the same level of corrosion protection, but Incoloy 925 can harden over time, making it much stronger for structure uses.

Q2: Can these fasteners be used in NACE MR0175 compliant projects?

A: Yes, they are widely approved for sour service provided the heat treatment results in a hardness level not exceeding 38 HRC.

Q3: What is the maximum service temperature?

A: These fasteners maintain structural integrity and corrosion resistance up to approximately 1000°F (540°C).

Q4: Are they resistant to seawater pitting?

A: Yes, the combination of Mo and Cr gives them a Pitting Resistance Equivalent Number (PREN) that outperforms 316/316L stainless steel.

Q5: What type of threading is recommended?

A: Rolled threads are generally preferred over cut threads to enhance fatigue resistance and maintain grain flow in these high-strength alloy fasteners.

Contact Us

Want better fastening solutions with Incoloy 925 Fasteners for your next project? Our technical staff can assist you choose application specs.

Email: info@tsmnialloy.com