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ASTM B637 is a specification that covers precipitation-hardening and cold worked nickel alloy tubes designed for high-temperature service. These alloys are known for their exceptional strength, corrosion resistance, and ability to withstand extreme temperatures, making them ideal for demanding applications in industries such as aerospace, power generation, and chemical processing.
The chemical composition of these nickel alloys is critical to their performance. Below is a table presenting the typical chemical composition for these alloys:
| Element | UNS N07080 | UNS N07022 | UNS N07208 | UNS N07252 | UNS N07001 |
|---|---|---|---|---|---|
| Nickel (Ni) | 70.0 min | 60.0 min | 70.0 min | 70.0 min | 70.0 min |
| Chromium (Cr) | 18.0-21.0 | 18.0-22.0 | 18.0-21.0 | 18.0-21.0 | 18.0-21.0 |
| Cobalt (Co) | 1.0 max | 1.0 max | 1.0 max | 1.0 max | 1.0 max |
| Molybdenum (Mo) | 0.5-1.5 | 0.5-1.5 | 0.5-1.5 | 0.5-1.5 | 0.5-1.5 |
| Titanium (Ti) | 2.0-2.7 | 2.0-2.7 | 2.0-2.7 | 2.0-2.7 | 2.0-2.7 |
| Aluminum (Al) | 1.0-1.8 | 1.0-1.8 | 1.0-1.8 | 1.0-1.8 | 1.0-1.8 |
| Iron (Fe) | 3.0 max | 3.0 max | 3.0 max | 3.0 max | 3.0 max |
The mechanical properties of these alloys are crucial for their performance in high-temperature applications. The table below outlines the typical mechanical properties:
| Property | UNS N07080 | UNS N07022 | UNS N07208 | UNS N07252 | UNS N07001 |
|---|---|---|---|---|---|
| Tensile Strength (ksi) | 140 min | 140 min | 140 min | 140 min | 140 min |
| Yield Strength (ksi) | 100 min | 100 min | 100 min | 100 min | 100 min |
| Elongation (%) | 15 min | 15 min | 15 min | 15 min | 15 min |
| Hardness (Rockwell) | B90 max | B90 max | B90 max | B90 max | B90 max |
The ASTM B637 specification covers several steel grades, each with unique properties tailored for specific applications. The grades include:
These nickel alloy tubes are used in a variety of high-temperature applications, including:
While ASTM B637 alloys are highly specialized, there are alternative grades that may be considered depending on the specific requirements of the application:
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
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