Alloy N40 - UNS S21900/S21904
Alloy N40, UNS S21900/S21904, is commonly associated with ASTM A276 - ASTM A479 - AMS 5595 - AMS 5656.
Alloy N40 is commonly known as Nitronic® 40, 21-6-9, XM-10 and XM-11, and our HPA N40. Alloy N40 is a Nitrogen strengthened, high Manganese Stainless Steel alloy.
While designated as UNS S21900, only the lower Carbon version, UNS S21904, is commercially available.
Mechanical properties here.
Chemistry
| Ni | Cr | Mn | C | Si | N | S | |
|---|---|---|---|---|---|---|---|
| Max % | 7.50 | 21.50 | 10.0 | 0.08 | 1.00 | 0.40 | 0.030 |
| Min % | 5.50 | 19.00 | 8.0 | 0.15 |
Typical Inventory
We can cold work high strength into your material to meet your high-performing requirements. We also facilitate size conversions, hot and cold rolling, and heat treating materials, as well as our machining capabilities.
For more information, contact us (or call 1-800-945-8230) and request our GFM Bulletin; you can view our brochure online! There's also more information about our offered services on our production capabilities page.
We have expanded our abilities to work smaller diameter bar down to nominal wire. Also, check out our weld wire to finish the job right!
Product Description
N40 is a nitrogen-strengthened, high-manganese stainless steel with high strength and excellent resistance to corrosion at high temperatures. N40, also called Nitronic 40®, can be fabricated and is readily weldable. N40 has been used for chemical processing, pollution control equipment and various aircraft engine components.
Download the FDA statement here
Applications
- Food and chemical processing.
- Aircraft components.
- Polution control equipement.
Mechanical Properties
The typical properties listed can usually be provided in rounds, sheet, strip, plate, & custom forgings. We have the equipment to produce small quantities in special sizes to meet our customers’ specific needs.
| Ultimate Tensile ksi (MPa) | Yield Strength ksi (MPa) | Elong. % in 2 in. | Hardness (Rockwell B) | |
|---|---|---|---|---|
| Min | 95 (655) | 48 (330) | 35 | |
| Max | 100 |
Common Specifications
Please, note that the specs listed are for reference and are not comprehensive nor indicative of the actual specifications listed on the Material Test Report (MTR). If you have a special spec requirement, then please reach out to our sales department at 1-800-472-5569.
AMS 5595, AMS 5656, ASME SA 240, ASTM A 240, ASTM A 276, ASTM A 479, ASTM A 666
Data referring to mechanical properties and chemical analyses are the result of tests performed on specimens obtained from specific locations of the products in accordance with prescribed sampling procedures; any warranty thereof is limited to the values obtained at such locations and by such procedures. There is no warranty with respect to values of the materials at other locations.
References
Electralloy's brochure on Nitronic 40