ASTM A276 / A276M UNS S30403
ASTM A276 UNS S30403 is a material grade specification for cold-finished or hot-finished bars in S30403 stainless steel, available in form of rounds, square, hexagons and other hot rolled extruded shapes. Ferrobend uses S30403 bar stock to ASTM A276 specifications for manufacturing stainless steel S30403 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 S30403 stainless steel round bars, square bars, hexagon bars and other extruded shapes.
Chemical Composition
| Identification Symbol | UNS Number | Elements | Composition % |
|---|---|---|---|
| 304L | S30403 | Carbon | 0.030 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 - 12.00 |
Mechanical Properties
| Property | Value | ||
|---|---|---|---|
| Condition | A | ||
| 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] | 70 [485] | 90 [620] | 70 [485] |
| Yield Strength, min, ksi [MPa] | 25 [170] | 45 [310] | 25 [170] |
| Elongation in 2 in. [50mm] or 4D, min, % | 40 | 30 | 30 |
| Reduction or Area, min, % | 50 | 40 | 40 |
| Brinell Hardness Number, HBW | -- | -- | -- |
Mechanical Properties
| Property | Value | ||||
|---|---|---|---|---|---|
| Condition | B | ||||
| Finish | Cold Finished | ||||
|
Diameter or Thickness, in. (mm) |
up to 3⁄4 (19.05) incl |
over 3⁄4 (19.05) to 1 (25.40) |
over 1 (25.40) to 11⁄4 (31.75) |
over 11⁄4 (31.75) to 11⁄2 (38.10) |
over 11⁄2 (38.10) to 13⁄4 (44.45) |
| Tensile Strength, min, ksi [MPa] | 125 [860] | 115 [795] | 105 [725] | 100 [690] | 95 [655] |
| Yield Strength, min, ksi [MPa] | 100 [690] | 80 [550] | 65 [450] | 50 [345] | 45 [310] |
| Elongation in 2 in. [50mm] or 4D, min, % | 12 | 15 | 20 | 24 | 28 |
| Reduction or Area, min, % | 35 | 35 | 35 | 45 | 45 |
| Brinell Hardness Number, HBW | -- | -- | -- | -- | -- |
Mechanical Properties
| Property | Value | ||
|---|---|---|---|
| Condition | S | ||
| Finish | Cold Finished | ||
| Diameter or Thickness,in. (mm) | up to 2 (50.8) incl |
over 2 to 21⁄2 (50.8 to 63.5) incl |
over 21⁄2 to 3 (63.5 to 76.2) incl |
| Tensile Strength, min, ksi [MPa] | 95 [650] | 90 [620] | 80 [550] |
| Yield Strength, min, ksi [MPa] | 75 [515] | 65 [450] | 55 [380] |
| Elongation in 2 in. [50mm] or 4D, min, % | 25 | 30 | 30 |
| Reduction or Area, min, % | 40 | 40 | 40 |
| Brinell Hardness Number, HBW | -- | -- | -- |
