ASTM A276 UNS S31008
ASTM A276 UNS S31008 is a material grade specification for cold-finished or hot-finished bars in S31008 stainless steel, available in form of rounds, square, hexagons and other hot rolled extruded shapes. Boltport uses S31008 bar stock to ASTM A276 specifications for manufacturing stainless steel S31008 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 S31008 stainless steel round bars, square bars, hexagon bars and other extruded shapes.
Chemical Composition
| Identification Symbol | UNS Number | Grade | Elements | Composition % |
|---|---|---|---|---|
| 310S | S31008 | 21 chromium, 26 nickel, 4.5 molybdenum |
Carbon | 0.02 max |
| Manganese | 2.00 max | |||
| Phosphorus | 0.045 max | |||
| Sulfur | 0.035 max | |||
| Silicon | 1.00 max | |||
| Nickel | 23.00 - 28.00 | |||
| Chromium | 19.00 - 23.00 | |||
| Molybdenum | 4.00 - 5.00 | |||
| Copper | 1.00 - 2.00 | |||
| Nitrogen | 0.10 max |
Mechanical Properties
| Property | Value |
|---|---|
| Finish | Hot-Finished & Cold Finished |
| Tensile Strength, min, ksi [MPa] | 71 [490] |
| Yield Strength, min, ksi [MPa] | 31 [215] |
| Elongation in 2 in. [50mm] or 4D, min, % | 35 |
| Reduction or Area, min, % | -- |
| Brinell Hardness Number, HBW | -- |
Fasteners
-
Bolts -
Screws -
Studs -
Nuts -
Threaded Rods -
Pins -
Washers -
Components