JIANGSU MITTEL STEEL INDUSTRIAL LIMITED |
Verified Suppliers
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Products | Stainless Steel Bar |
Grade | XM-19 / UNS S20910 / 1.3964 |
Diameter | 4 - 350mm |
Length | 6m or custom cutting any length as request |
Finishing | Bright Bar / Black Surface |
Heat Treatment | Solid Solution , ageing |
Surface Process | Polishing , Peeling |
Other Grade | 201 303 304 304L 309S 310S 316L 316Ti 317L 321 347 410 420 430 431 2205 2507 904L 254SMO 416 440A/B/C.etc |
MOQ | 500 Kgs |
Loading Port | Shanghai Port |
Processing | Cutting |
Packing | Wooden box or cutting as request |
Stainless Steel UNS S20910 (XM-19)
Nitronic 50 stainless steel, also known as UNS S20910 and XM-19, is an austenitic stainless steel with a blend of strength and corrosion resistance that is better than Stainless Steels 316, 316/316L, 317, and 317/317L. In fact, XM-19 has twice the yield strength at room temperature compared to Stainless Steels 316/316L and 317/317L. Additionally, it has good mechanical properties at elevated and sub-zero temperatures. Other characteristics that set XM-19 apart from other grades of stainless steel are that it does not become magnetic when severely cold worked and it has outstanding corrosion resistance in harsh environments such as marine applications.
XM-19 is composed of between 20% and 23% chromium, 11% to 13% nickel, 4% to 6% manganese, and 1.5% to 3% molybdenum, with the balance being iron. Also found in XM-19 are trace amounts of carbon, silicon, sulfur, phosphorus, nitrogen, columbium (or niobium) and vanadium. As noted previously, it is much stronger than Stainless Steels 316/316L and 317/317L; however, the same fabrication equipment and procedures used for the Stainless Steel 300 grades can be utilized for XM-19. In addition, the same cooling techniques used for Stainless Steels 316/316L and 317/317L can be utilized for XM-19.
XM-19 can be a confusing alloy to work with, as there are three different types of conditions used for numerous applications. The three conditions are annealed, as-rolled and high strength. As-rolled is a term used by the mill to state the fact that it is a “rolled” material. All conditions of XM-19 are first rolled. Both the annealed condition and the as-rolled condition are rolled at the same temperature. To acquire XM-19 annealed, the material would first be rolled, followed by either a mill or local annealing process which lowers the tensile and yield properties resulting in a more workable material. On the other hand, transforming XM-19 into the high strength condition can only be done at the mill after the original rolling process, which is done at a lower temperature than annealed and as-rolled material to further help increase the properties. Then high strength material is rolled a second time and later cold worked, which again increases the physical properties of the material even more.
ANNEALED | STOCKING DIAMETERS | 1/2” TO 12” |
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MATERIAL LENGTHS | UP TO 24’ | |
AS ROLLED | STOCKING DIAMETERS | 2” TO 6” |
MATERIAL LENGTHS | UP TO 24’ | |
HIGH STRENGTH | STOCKING DIAMETERS | 1/2” TO 8” |
MATERIAL LENGTHS | UP TO 24’ |
UNS | TYPE | AMS | ASTM | FEDERAL | CHARACTERISTICS |
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S20910 | XM-19 | 5764 | A-276 A-314 A-479 | – | Nitrogen strengthened austenitic steel, good corrosion resistance with improved mechanical properties. XM-19 is about twice the yield strength of 316. |
C | MN | P | S | SI | CR | NI | MO | CU | OTHER | M/NM |
---|---|---|---|---|---|---|---|---|---|---|
.06 | 4. – 6. | .04 | .03 | 1. | 20.5 – 23.5 | 11.5 – 13.5 | 1.5 – 3. | N .2 – .4 Cb .1 – .3 V .1 – .3 | NM |