ASTM A276 / A276M UNS N08904
ASTM A276 UNS N08904 is a material grade specification for cold-finished or hot-finished bars in N08904 stainless steel, available in form of rounds, square, hexagons and other hot rolled extruded shapes. Ferrobend uses N08904 bar stock to ASTM A276 specifications for manufacturing stainless steel N08904 bolts, nuts, screws, studs, threaded rods, other fasteners and bar stock components for general engineering purposes.
ASTM A276 specification covers requirements such as chemical composition, mechanical properties, heat treatment and other supplementary requirements for N08904 stainless steel round bars, square bars, hexagon bars and other extruded shapes.
Chemical Composition
| Identification Symbol | UNS Number | Elements | Composition % |
|---|---|---|---|
| 904L | N08904 | Carbon | 0.020 max |
| Manganese | 2.00 max | ||
| Phosphorus | 0.045 max | ||
| Sulfur | 0.035 max | ||
| Silicon | 1.00 max | ||
| Chromium | 19.00 - 23.00 | ||
| Nickel | 23.0 - 28.0 | ||
| Molybdenum | 4.00 - 5.00 | ||
| Nitrogen | 0.10 max | ||
| Copper | 1.0 - 2.0 |
Mechanical Properties
| Property | Value |
|---|---|
| Finish | Hot-Finished & Cold Finished |
| Tensile Strength, min, ksi [MPa] | 71 [490] |
| Yield Strength, min, ksi [MPa] | 31 [220] |
| Elongation in 2 in. [50mm] or 4D, min, % | 35 |
| Reduction or Area, min, % | -- |
| Brinell Hardness Number, HBW | -- |
