It is best to use nickel 200 fasteners for tough manufacturing jobs where the fasteners need to work in high temperatures. It is best that these high-purity nickel 200 metal fasteners work at temperatures up to 315°C (600°F), and they keep their shape in acidic places. Their 99.6% minimum nickel content makes sure that they are good at conducting heat, being flexible, and not breaking from rust stress. Because of this, they are necessary for making parts for spacecraft, tools for handling chemicals, and power systems, where a broken part could have terrible effects.
Nickel 200 screws are not the same as stainless steel screws because of the way their chemicals are structured. Small amounts of carbon (up to 0.15%), manganese (up to 0.35%), and sulfur (up to 0.01%) make up the rest of the mixture. At least 99.6% of it is pure nickel. This mix makes a material that is very stable at high temperatures and has mechanical properties that don't change when the temperature does.
The material's tensile strength is very high, between 55,000 and 85,000 PSI at room temperature. It stays strong even when heated up. The yield strength of this material is between 15,000 and 45,000 PSI, which is high enough for building. Because they are flexible, Nickel 200 nuts, screws, and threaded fasteners can be used in important systems where heat expansion and contraction happen a lot.
When it comes to tough jobs, titanium screws that can handle high temperatures really shine. Extremely hot places can handle temperatures of up to 600°F (315°C), and even hotter places can handle temperatures even higher. The rate of thermal expansion stays low at 7.4 x 10⁻⁶ in/in/°F. This means that the material doesn't change size much during thermal cycles.
The thermal conductivity of 52 BTU·ft/hr·ft²·°F makes it easy for heat to leave. This keeps the fastener from getting hot spots that could damage it. This trait comes in handy when making airplanes, where weight reduction and temperature control are important design factors.
Because it has a lot of nickel in it, it doesn't react well with neutral salts, alkaline solutions, or organic acids. To keep their surface intact, Nickel 200 fasteners can be exposed to dangerous chemicals. Stainless steel fasteners, on the other hand, can pit or crack when they are in salty environments.
Up to 1000°F (540°C), the resistance to rust is still very good. But above 600°F, the mechanical properties start to break down. The substance is very resistant to strong alkalis, which makes it great for tools used to work with chemicals that are frequently exposed to sodium hydroxide or potassium hydroxide.
It's important to carefully compare different materials for industrial screws so that you get the best performance and value for your money. You can't really rust some kinds of stainless steel, like 316 and 321. They're also a lot cheaper than nickel 200, which costs $25 to $40 per pound. Instead, stainless steel doesn't move heat around very well and can become soft at high temperatures, which can lead to intergranular rust.
If you compare Monel 400 screws to pure nickel screws, they are stronger and less likely to rust, especially near the coast. The mix of copper and nickel makes it very strong (close to 80,000 PSI) but also very bendable. But Monel doesn't move heat around as well as nickel 200, which could cause thermal stress clusters when there is a lot of heat.
Inconel 625 and 718 are high-end choices that can be used in temperatures up to 1200°F and are very strong at those temps. Most of the time, these superalloys cost two to three times as much as nickel 200. Because of this, they can only be used in the most demanding gas engines and airplanes.
People who work in buying have to think about how well high-temperature screws work over time as well as how much they cost. The price of Nickel 200 is between that of cheap stainless steel and pricey superalloys. It works just as well as metals that cost more, but it only costs 40% as much.
For things that are used in dangerous places, the longer life often covers the cost of the products themselves. Tests done in the lab show that nickel 200 screws keep 95% of their original tensile strength after being heated 10,000 times between room temperature and 500°F. What about 316 stainless steel? It only keeps 75% of its original strength when the same things happen.
When movements or changes in temperature happen a lot in a certain application, wear resistance is very important. Nickel 200 doesn't break down easily. At 10° cycles, it can handle close to 35,000 PSI. The material is flexible, which helps move stress away from thread roots. This makes it less likely that cracks will form.
Nickel 200 can get harder when it is stressed, but it can still bend enough to meet standards for mounting pressure. This can be used for changing loading. Because the thread contact doesn't change over time, you don't have to worry about galling or stopping, which can happen with systems made of harder metal.
In the airplane business, high-performance nickel nuts are often used for engine parts, exhaust systems, and structural parts that are exposed to very high temperatures. Nickel 200 fasteners are used in the parts of industrial jet engines that move the air. These parts get very hot (400 to 500°F) and shake a lot.
Another important use for materials that can keep their shape when heated and cooled between -250°F and +250°F is making satellites. Since Nickel 200 doesn't give off much gas, it can be used in vacuum settings where dirt or dust could damage sensitive equipment.
Military jets use fasteners for exhaust tubes, heat transfer devices, and parts of the afterburner. For military flying, where saltwater makes thermal forces worse, it's very important that things don't rust and can handle high temperatures.
On reactor tanks, distillation columns, and heat transfer systems that work with harsh fluids at high temperatures, nickel 200 screws are used by companies that make tools for chemical processing. At temperatures up to 500°F, nickel doesn't mix with alkaline liquids. This is useful in places where caustic soda is made.
When used in pharmaceutical-making equipment, fasteners must be able to handle chemical attacks and clean up well. Nickel 200 can be used to smooth out surfaces, which makes them easier to clean and sterilize and keeps things from getting dirty.
These screws are used in catalyst replacement systems in the petroleum industry. These systems are heated to around 600°F and are exposed to hydrogen sulfide, ammonia, and organic acids. They don't break because the material is stable, which could put process safety at risk.
When steam gets to 500 to 550°F, it's used in secondary loop systems at nuclear power plants. They use nickel 200 screws. To keep nuclear material from getting into the main circuit through leaks, the material must be able to prevent stress corrosion breaking.
Nickel bolts are useful in boiler feedwater systems for fossil fuel power plants because they work well in places where high temperatures and liquid oxygen are bad for most materials. The plant can be used more often because it doesn't need to be kept as often because it lasts longer.
Geothermal power systems use brine solutions, which are very hard to work with because they are very hot and contain dangerous chemicals. Because of this, stainless steel screws break very quickly. Nickel 200 screws, on the other hand, stay strong.
When you buy nickel 200 fasteners, you need to carefully consider your providers. You should look at their welding skills, quality control systems, and ability to meet certification standards. Brands with a good name keep their NADCAP certification for use in airplanes and their ISO 9001 certification for use in business.
If you want to find high-performance screws, it's important to know what materials were used. For every batch of goods they send out, sellers should keep detailed records of the chemistry tests, mechanical property tests, and heat treatment. As part of ASTM B160/B160M, products must have mill test certificates (MTC) and third-party proof from SGS testing.
A study of the production capability should look at the tools used for making things, the limits on capacity, and how reliable wait times are. Wholesalers who are on the cutting edge have more than one line of production that can make over 100,000 items every month. This always makes sure that big projects have what they need.
Standard bolt sizes range from M2.5 to M64, but sometimes very specific tools need to be made to exact specifications. Good manufacturers offer non-standard sizes with tolerances close to ±0.05 mm for accurate uses.
You can choose lengths from 1 mm to 1990 mm, so you can find the right answer for any building job. Custom drilling, head designs, and drive systems can be done by manufacturers who know a lot about machines and can do a lot of different kinds of work.
Things look better and are less likely to rust after being ground or anodized on the surface. It's important to carefully plan these steps so that they don't damage the base material's ability to resist rust or move.
Because nickel prices change so often, it's important to think about the costs of stores along with the safety of supply. You can be sure of stability and keep prices low by making basic deals with different service providers.
To plan projects well, you need to keep track of wait times. Shipping times vary from 10 to 25 days, depending on the size of the order and any special needs. It's possible to handle orders that need to be done quickly, but it usually costs more.
There are different ways to pay for things, but most trustworthy sellers take T/T, L/C, PayPal, and Western Union. It's easier to buy things from other countries when you can set up flexible payment plans that keep everyone safe.
Nickel 200 fasteners perform optimally in continuous service temperatures up to 600°F (315°C) in oxidizing environments. Short-term exposure to 700°F is acceptable, though mechanical properties begin degrading beyond 650°F. In reducing atmospheres with limited oxygen exposure, service temperatures can extend to 750°F while maintaining adequate strength characteristics.
Nickel 200 demonstrates superior corrosion resistance compared to standard stainless steel grades, particularly in alkaline solutions and reducing acids. While 316 stainless steel may experience pitting in chloride environments above 150°F, nickel 200 maintains surface integrity. However, stainless steel outperforms nickel 200 in strongly oxidizing acids like nitric acid, making material selection dependent on specific chemical exposure conditions.
Standard lead times range from 10 to 25 days depending on order quantity and customization complexity. Simple modifications like custom lengths typically require 10-15 days, while complex specifications involving special threading or head configurations may extend to 20-25 days. Minimum order quantities vary by manufacturer but typically start at 1,000 pieces for standard configurations and 500 pieces for custom specifications.
Meihao connects you with Nickel 200 fastener makers that have been checked out and are known around the world for being of the highest quality and dependability. Our site connects you with sellers who offer low prices, open shipping times, and the freedom to make any changes you need. This makes it easy for you to buy things from other businesses. Our helpful staff can be reached at somyshare@gmail.com to find out more about our large network of sources and how we can help you find the best high-temperature screws. When you go to chinatopmanufacturer.com, you can see our full list of providers and get prices from a lot of them at once.
1. American Society for Testing and Materials. "ASTM B160/B160M-18: Standard Specification for Nickel Rod and Bar." ASTM International, 2018.
2. Davis, Joseph R. "Nickel, Cobalt, and Their Alloys." ASM International Materials Handbook, Volume 2: Properties and Selection of Nonferrous Alloys, 2nd Edition, 1990.
3. Rebak, Raul B. "High-Temperature Corrosion of Nickel-Base Alloys in Steam and Supercritical Water." Journal of Nuclear Materials, Volume 415, Issue 3, 2011.
4. Special Metals Corporation. "Technical Bulletin: Nickel 200 and 201 Properties and Applications." Special Metals Technical Publication, 2019.
5. Totten, George E. "Handbook of Mechanical Alloy Design." Marcel Dekker Publishers, Materials Engineering Series, 2004.
6. Wyatt, Larry M. "Fastener Materials Selection for High-Temperature Applications." Industrial Fasteners Institute Technical Report, 2020.