ASTM A276 Type 309S
ASTM A276 Type 309S is a material grade specification for cold-finished or hot-finished bars in 309S stainless steel, available in form of rounds, square, hexagons and other hot rolled extruded shapes. Boltport uses 309S bar stock to ASTM A276 specifications for manufacturing stainless steel 309S 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 309S stainless steel round bars, square bars, hexagon bars and other extruded shapes.
Chemical Composition
Chemical Composition
| Grade Symbol | UNS Number | Elements | Composition, % |
|---|---|---|---|
| Type 309S | S30908 | Carbon | 0.08 max |
| Manganese | 2.00 max | ||
| Phosphorus | 0.045 max | ||
| Sulfur | 0.030 max | ||
| Silicon | 1.00 max | ||
| Chromium | 22.00 - 24.00 | ||
| Nickel | 12.00 - 15.00 |
Mechanical Properties
| Property | Value |
|---|---|
| Finish | Hot-Finished & Cold Finished |
| Tensile Strength, min, ksi [MPa] | 75 [515] |
| Yield Strength, min, ksi [MPa] | 30 [205] |
| Elongation in 2 in. [50mm] or 4D, min, % | 40 |
| Reduction or Area, min, % | 50 |
| Brinell Hardness Number, HBW | .... |
Fasteners
-
Bolts -
Screws -
Studs -
Nuts -
Threaded Rods -
Pins -
Washers -
Components