A276 / A276M Type XM 21
ASTM A276 Type XM 21 is a material grade specification for cold-finished or hot-finished bars in XM 21 stainless steel, available in form of rounds, square, hexagons and other hot rolled extruded shapes. Ferrobend offers XM 21 bars, shafts, angle, channel, beam profiles, bolts, studs, screws, nuts, threaded rods, pins and other bar stock components to astm a276 type XM 21 specification.
ASTM A276 specification covers requirements such as chemical composition, mechanical properties, heat treatment and other supplementary requirements for XM 21 stainless steel round bars, square bars, hexagon bars and other extruded shapes.
Chemical Composition
| Grade Symbol | UNS Number | Elements | Composition, % |
|---|---|---|---|
| Type XM 21 | S30452 | Carbon | 0.08 max |
| Manganese | 2.00 max | ||
| Phosphorus | 0.045 max | ||
| Sulfur | 0.030 max | ||
| Silicon | 1.00 max | ||
| Chromium | 18.00 - 20.00 | ||
| Nickel | 8.00 - 10.00 | ||
| Nitrogen | 0.16 - 0.30 |
Mechanical Properties
| Property | Value |
|---|---|
| Finish | Hot-Finished & Cold Finished |
| Tensile Strength, min, ksi [MPa] | 90 [620] |
| Yield Strength, min, ksi [MPa] | 50 [345] |
| Elongation in 2 in. [50mm] or 4D, min, % | 30 |
| Reduction or Area, min, % | 50 |
| Brinell Hardness Number, HBW | .... |
