You often see different codes when you look at nickel alloys. The unified numbering system (UNS) and W.Nr. help you clearly identify each alloy. These systems give you a simple way to match materials across the world. When you use uns and w.nr., you can pick the right alloy for your project and avoid mistakes in selection.
Key Takeaways
- The Unified Numbering System (UNS) and Werkstoffnummer (W.Nr.) help people find nickel alloys easily. These codes help you not make mistakes when picking materials.
- UNS codes begin with ‘N’ and have five numbers after. W.Nr. codes have five digits with a dot in the middle. Both types of codes give important facts about what the alloy is made of and how it acts.
- Always look at both UNS and W.Nr. codes when you order nickel alloys. This makes sure you get the right material for your project.
- Use the tables given to match UNS and W.Nr. codes to their nickel alloys. This helps you pick the right alloy fast.
- Check ASTM and ASME standards for the newest rules on nickel alloys. This helps your project go well and stops mistakes.
UNS System for Nickel Alloys
The Unified Numbering System (UNS) helps you find nickel alloys fast. Each alloy gets its own code. This makes it simple to compare materials. You can pick the right alloy for your job. You often see UNS and W.Nr. codes together. This is common when you use global standards. It helps you match alloys from different places.
UNS Format
The UNS format for nickel alloys starts with ‘N’ and five numbers. This setup lets you spot nickel alloys quickly. If you see N06625, you know it is a nickel alloy. The numbers after ‘N’ show which alloy it is. They also tell you about its makeup. This format helps you find the right alloy for your needs. You can check if it fits your project.
Tip: The ‘N’ in the UNS code means the alloy is nickel-based. This keeps you from mixing it up with other metals.
UNS in Nickel Alloy Grades
Many nickel alloys use UNS numbers. These codes help you match alloys to their names and uses. Here is a table with some nickel alloys and their UNS numbers:
| Grade | UNS | W.Nr. | AWS A5.14 | UNS | AWS A5.11 | UNS |
|---|---|---|---|---|---|---|
| Monel 400 | N04400 | 2.4360 | ERNiCu-7 | N04060 | ENiCu-7 | W84190 |
| Monel 401 | N04401 | / | / | / | / | / |
| Monel 404 | N04404 | 2.4867 | / | / | / | / |
| Monel R-405 | N04405 | / | / | / | / | / |
| Monel K-500 | N05500 | 2.4375 | ERNiCu-8 | N05504 | / | / |
| Inconel 600 | N06600 | 2.4816 | ERNiCr-3 | N06082 | ENiCrFe-3 | W86182 |
| Inconel 601 | N06601 | 2.4851 | ERNiCrFe-11 | N06601 | / | / |
| Inconel 602CA | N06025 | 2.4633 | ERNiCrFe-12 | N06025 | ENiCrFe-12 | W86025 |
| Inconel 617 | N06617 | 2.4663a | ERNiCrCoMo-1 | N06617 | ENiCrCoMo-1 | W86117 |
| Inconel 625 | N06625 | 2.4856 | ERNiCrMo-3 | N06625 | ENiCrMo-3 | W86112 |
| Inconel 625LCF | N06626 | 2.4856 | / | / | / | / |
| Inconel 686 | N06686 | 2.4606 | ERNiCrMo-14 | N06686 | ENiCrMo-14 | W86026 |
| Inconel 690 | N06690 | 2.4642 | ERNiCr-7 | N06073 | ENiCrFe-7 | W86152 |
| Inconel 693 | N06693 | / | ERNiCrFeAl-1 | N06693 | / | / |
| Inconel 706 | N09706 | / | / | / | / | / |
| Inconel 718 | N07718 | 2.4668 | ERNiFeCr-2 | N07718 | / | / |
| Inconel 718SPF | N07719 | / | / | / | / | / |
| Inconel 725 | N07725 | / | ERNiCrMo-15 | N07725 | / | / |
| Inconel 740H | N07740 | / | ERNiCrCo-1 | N07740 | / | / |
| Inconel X-750 | N07750 | 2.4669 | / | / | / | / |
| Inconel 751 | N07751 | / | / | / | / | / |
| Inconel MA754 | N07754 | / | / | / | / | / |
| Inconel 783 | R30783 | / | / | / | / | / |
| Incoloy 800 | N08800 | 1.4876 | / | / | / | / |
| Incoloy 800H | N08810 | 1.4958 | / | / | / | / |
| Incoloy 800HT | N08811 | / | / | / | / | / |
| Incoloy 803 | S35045 | / | / | / | / | / |
| Incoloy 825 | N08825 | 2.4858 | ERNiFeCr-1 | N08065 | / | / |
| Incoloy 864 | S35135 | / | / | / | / | / |
| Incoloy 890 | N08890 | / | / | / | / | / |
| Incoloy 903 | N19903 | / | / | / | / | / |
| Incoloy 907 | N19907 | / | / | / | / | / |
| Incoloy 908 | N09908 | / | / | / | / | / |
| Incoloy 909 | N19909 | / | / | / | / | / |
| Incoloy 925 | N09925 | / | / | / | / | / |
| Incoloy 926 | N08926 | 1.4529 | / | / | / | / |
| Incoloy 945 | N09945 | / | / | / | / | / |
| Incoloy 945X | N09946 | / | ERNiFeCr-3 | N09946 | / | / |
| Incoloy MA956 | S67956 | / | / | / | / | / |
| Incoloy A-286 | S66286 | 1.4980 | / | / | / | / |
| Incoloy 20 | N08020 | 2.4660 | / | / | / | / |
| Incoloy 28 | N08028 | 1.4563 | / | / | / | / |
| Incoloy DS | 1.4862 | 1.4862 | / | / | / | / |
| Incoloy 330 | N08330 | 1.4886 | / | / | / | / |
| Incoloy 25-6HN | N08367 | / | / | / | / | / |
| Incoloy 27-7MO | S31277 | / | / | / | / | / |
| Hastelloy B | N10001 | / | ERNiMo-1 | N10001 | ENiMo-1 | W80001 |
| Hastelloy B-2 | N10665 | 2.4617 | ERNiMo-7 | N10665 | ENiMo-7 | W80665 |
| Hastelloy B-3 | N10675 | 2.4600 | ERNiMo-10 | N10675 | ENiMo-10 | W80675 |
| Hastelloy C-4 | N06455 | 2.4610 | ERNiCrMo-7 | N06455 | ENiCrMo-7 | W86455 |
| Hastelloy C-22 | N06022 | 2.4602 | ERNiCrMo-10 | N06022 | ENiCrMo-10 | W86022 |
| Hastelloy C-22HS | N07022 | / | / | / | / | / |
| Hastelloy C-276 | N10276 | 2.4819 | ERNiCrMo-4 | N10276 | ENiCrMo-4 | W80276 |
| Hastelloy C-2000 | N06200 | 2.4675 | ERNiCrMo-17 | N06200 | ENiCrMo-17 | W86200 |
| Hastelloy G-3 | N06985 | / | ERNiCrMo-9 | N06985 | ENiCrMo-9 | W86985 |
| Hastelloy G-30 | N06030 | 2.4603 | ERNiCrMo-11 | N06030 | ENiCrMo-11 | W86030 |
| Hastelloy G-35 | N06035 | / | ERNiCrMo-22 | N06035 | ENiCrMo-22 | W86035 |
| Hastelloy N | N10003 | / | / | / | / | / |
| Hastelloy S | N06635 | / | / | / | / | / |
| Hastelloy W | N10004 | / | ERNiMo-3 | N10004 | ENiMo-3 | W80004 |
| Hastelloy X | N06002 | 2.4665 | ERNiCrMo-2 | N06002 | ENiCrMo-2 | W86002 |
When you pick a nickel alloy, use this table. Check the UNS number to make sure you have the right one. This helps you meet the specs and avoid mistakes.
Interpreting UNS
You can learn a lot from a UNS number. For example, UNS N02200 and UNS N02201 are both pure nickel. These codes tell you what is in the alloy. They also show how strong it is. Nickel 200 fights rust and works well with heat and electricity. Nickel 201 has less carbon. It can handle higher heat and is good for tough jobs.
When you look at a UNS code, you get key facts. You learn about strength, rust resistance, and uses. This helps you pick the best nickel alloy for your job. You might need it for chemical work, power plants, or electronics. The UNS system makes it easy to compare materials. It helps you meet the right standards for your project.
W.Nr. System and Nickel Specifications
The Werkstoffnummer (W.Nr.) system helps you know which nickel alloy you have. This is important if you use European rules. You will see this system in many material lists. W.Nr. numbers let you match alloys from different countries. If you use both UNS and W.Nr., you can compare nickel alloys and make sure you pick the right one for your project.
W.Nr. Format
The W.Nr. system uses five numbers to show each alloy. The first number tells you the main metal group. For nickel, the first number is 2. This means it is a heavy metal. The next four numbers show the exact alloy. This makes it easy to find the right material quickly.
| Component | Description |
|---|---|
| First Digit | Shows the main metal group (2 for heavy metals, 3 for light metals). |
| Next Four Digits | Tell you the exact alloy in each group, from 2.0000 to 3.9999. |
| Overall Structure | Each code has five numbers, so you can identify alloys easily. |
You can see how this works with real alloys. Nickel 200 uses W.Nr. numbers 2.4060 and 2.4066. Nickel 201 uses 2.4061 and 2.4068. This system keeps your material choices clear and simple.
| Alloy Name | W.Nr. Numbers |
|---|---|
| Nickel 200 | 2.4060, 2.4066 |
| Nickel 201 | 2.4061, 2.4068 |
Note: The W.Nr. system covers 11 nickel alloy grades. This helps you find the right alloy for your needs.
W.Nr. in Nickel Alloy Grades
You use W.Nr. numbers to match nickel alloys to their names and uses. This helps you avoid mistakes when you order or choose materials. Here are some common nickel alloys and their W.Nr. numbers:
| W.Nr. | Nickel Alloy Grade | Other Designations | Composition | Standards | Other References | Density |
|---|---|---|---|---|---|---|
| 1.4876 | N08800 | Alloy800 | X10NiCrAlTi32-21 | DIN EN 10095/SEW470 | A240 B409/B163 B407 | 8.0 |
| 1.4958 | N08810 | Alloy800H | X5NiCrAlTi31-20 | DIN EN 10028-7/DIN 17459 | A240 B409/B163 ASTM B407 B514 B515 | 8.0 |
| 2.4066 | N02200 | Nickel 200 | Ni99,2 | DIN 17740/DIN 17751 | B162/B161 B163 B725 | 8.9 |
| 2.4600 | N10675 | Hastelloy B3 | NiMo29Cr | DIN 17744 DIN17750 | B333/B619 B622 B626 | 9.22 |
| 2.4816 | N06600 | Alloy600 | NiCr15Fe | DIN EN 10095 DIN 17742 DIN 17750/17751 | B168/B163 B167 B516 B517 | 8.5 |
You will also see many trade names for these alloys. For example:
- Inconel 600 is also called Nickelvac 600 or Ferrochronin 600
- Inconel 625 is also called Chornin 625, Altemp 625, Nickelvac 625, Haynes 625, or Nicrofer 6020
- Hastelloy C22 is also called Inconel 22 or Nicrofer 5621
- Hastelloy C276 is also called Nickelvac HC-276, Inconel 276, or Nicrofer 5716
You can look at the chart below to see how dense these alloys are:
Interpreting W.Nr.
When you see a W.Nr. number, you learn about the alloy’s makeup, strength, and uses. The number links to the alloy’s rules and material lists. For example, Nickel 200 (W.Nr. 2.4060 and 2.4066) is 99.6% pure nickel. This makes it strong and good at fighting rust. You can use it where you need good heat and electricity flow.
| Property | Description |
|---|---|
| Corrosion Resistance | Nickel alloys are great at fighting rust. |
| High-Temperature Strength | These alloys stay strong when it is hot. |
| Durability | Nickel alloys last a long time in many places. |
- Nickel 200 is used in chemical plants, electronics, and boats.
- Alloy 600 (W.Nr. 2.4816) fights rust and heat, so it is used in furnaces and heat exchangers.
- Alloy 800 (W.Nr. 1.4876) can handle high heat and stress, so it is used in power plants and chemical factories.
- Hastelloy B3 (W.Nr. 2.4600) is very good at fighting rust in tough chemical places.
You use W.Nr. numbers to pick the right alloy for your job. This helps you get the right material and makes sure your project works well. When you use both UNS and W.Nr., you get a full picture of the alloy’s features, makeup, and strength.
Comparing UNS and W.Nr. for Nickel Alloys
Key Differences
You see UNS and W.Nr. systems with nickel alloys. Each system helps you pick the right alloy. The UNS system is used in North America. The W.Nr. system is used in Europe. Both systems help you match material specs. They make sure you get the correct nickel alloy.
The UNS code has a letter and five numbers. The W.Nr. code uses numbers and a decimal point. These codes help you check how strong the alloy is. They also show how well it fights rust. You use them to find other important features. This helps you choose the best alloy for your needs.
When to Use Each
Use the UNS system for American standards. Use it when you buy from U.S. suppliers. The W.Nr. system is for European standards. Use it when you buy from European suppliers. Sometimes, both codes are listed for one nickel alloy. This makes it easy to compare alloys. It helps you meet different material specs.
Here is a table that shows when both codes appear for the same grade:
| EN Number | UNS Number | Common Trade Name |
|---|---|---|
| 1.4462 | S32205 | 2205 |
| 1.4410 | S32750 | 2507 |
| 1.4501 | S32760 | Zeron 100 |
You can use this table to match the right alloy. It works no matter which system your supplier uses.
Cross-Referencing
You can match UNS and W.Nr. codes to pick the right alloy. This helps you check strength and rust resistance. It also helps you find other key features. Many engineers use tables to match codes. This helps them avoid mistakes with material specs.
Here is a table for cross-referencing:
| UNS Code | W.Nr. Code | Description |
|---|---|---|
| N04400 | 2.4360 | Nickel 200 |
| N02200 | 2.4066 | Nickel 201 |
| N06600 | 2.4816 | Inconel 600 |
| N06601 | 2.4851 | Inconel 601 |
Tip: Always check both codes when you order nickel alloys. This makes sure you get the right alloy. You will get the correct strength and rust resistance for your needs.
You can also find matches for other nickel alloy grades. Some examples are Inconel 800 and Inconel 825. This process helps you meet all specs. It makes sure your alloy works well in tough jobs.
Selecting Nickel Alloy Grades by Specifications
Using UNS and W.Nr.
When you choose a nickel alloy, you want to make sure it fits your project’s needs. UNS and W.Nr. identifiers help you do this. These codes let you compare alloys from different suppliers and countries. You can check if the alloy matches the right specifications for your job. This helps you avoid problems with compatibility and performance.
- UNS codes, like N06625, help you find alloys that work as substitutes.
- You can use these codes to check national standards before you buy.
- W.Nr. numbers let you match European alloys with American ones.
- Both systems help you pick alloys with the right corrosion resistance and mechanical properties.
If you need nickel alloy products for a chemical plant or a power station, always check the codes. This makes sure you get the right corrosion protection and mechanical strength. You will also know if the alloy can handle heat or stress.
Tip: Always match the alloy’s code with your project’s requirements. This keeps your equipment safe and working well.
Sourcing Nickel Alloys
You often see UNS and W.Nr. codes in standards from ASTM and ASME. These standards help you find the right nickel alloy for your needs. They show you which alloys meet the right properties for your project.
| Standard | UNS Identifier | Description |
|---|---|---|
| B 670 2007 | UNS N07718 | Precipitation-Hardening Nickel Alloy Plate, Sheet, and Strip for High-Temperature Service |
| B 688 2009 | UNS N08366, UNS N08367 | Chromium-nickel-molybdenum-iron plate, sheet, and strip |
| B 691 2007 | UNS N08366, UNS N08367 | Iron-nickel-chromium-molybdenum alloys rod, bar, and wire |
| ASME SB-446 | UNS N06625, N06219, N06650 | Specification for Nickel Alloy Rod and Bar |
You can use these tables to check if the alloy meets the right standards. This helps you get the right mechanical and corrosion properties. When you order, give the supplier the correct UNS or W.Nr. code. This makes sure you receive the right nickel alloy products for your project.
Note: Always review the latest ASTM or ASME specifications before you buy. This helps you avoid mistakes and keeps your project on track.
You now know why UNS and W.Nr. identifiers matter when you choose a nickel alloy. These systems help you compare each alloy and make sure you select the right one for your project. If you want to learn more, check out ASTM or ASME standards or talk to a materials expert. You can also use online cross-reference tables to match alloy codes quickly.
FAQ
What is the main difference between UNS and W.Nr. systems?
You use the UNS system mostly in North America. You see the W.Nr. system in Europe. Both systems help you identify alloys, but each uses a different code format.
Can I use UNS and W.Nr. codes together?
Yes, you can use both codes together. This helps you match alloys from different countries. You make sure you get the right material for your project.
How do I find the right nickel alloy for my project?
You check the UNS or W.Nr. code in your project’s requirements. You compare these codes with supplier lists. This helps you choose the correct nickel alloy for your needs.
Why do some alloys have more than one code?
Some alloys have more than one code because they follow different standards in different regions. You may see both codes listed to help you compare and select the right material.
