ASTM A276 / A276M Type 321
ASTM A276 Type 321 is a material grade specification for cold-finished or hot-finished bars in 321 stainless steel, available in form of rounds, square, hexagons and other hot rolled extruded shapes. Ferrobend offers 321 bars, shafts, angle, channel, beam profiles, bolts, studs, screws, nuts, threaded rods, pins and other bar stock components to astm a276 type 321 specification.
ASTM A276 specification covers requirements such as chemical composition, mechanical properties, heat treatment and other supplementary requirements for 321 stainless steel round bars, square bars, hexagon bars and other extruded shapes.
Chemical Composition
| Grade Symbol | UNS Number | Elements | Composition, % |
|---|---|---|---|
| Type 321 | S32100 | Carbon | 0.08 max |
| Manganese | 2.00 max | ||
| Phosphorus | 0.045 max | ||
| Sulfur | 0.030 max | ||
| Silicon | 1.00 max | ||
| Chromium | 17.00 - 19.00 | ||
| Nickel | 9.00 - 12.00 | ||
| Titanium | 5×(C+N)-0.70 |
Mechanical Properties
| Property | Value | ||
|---|---|---|---|
| Finish | Hot-Finished | Cold Finished | |
| Diameter or Thickness,in. (mm) | All | up to 1⁄2 (12.70) incl | over 1⁄2 (12.70) |
| Tensile Strength, min, ksi [MPa] | 75 [515] | 90 [620] | 75 [515] |
| Yield Strength, min, ksi [MPa] | 30 [205] | 45 [310] | 30 [205] |
| Elongation in 2 in. [50mm] or 4D, min, % | 40 | 30 | 30 |
| Reduction or Area, min, % | 50 | 40 | 40 |
| Brinell Hardness Number, HBW | -- | -- | -- |
