ASTM A276 / A276M UNS S30451
ASTM A276 UNS S30451 is a material grade specification for cold-finished or hot-finished bars in S30451 stainless steel, available in form of rounds, square, hexagons and other hot rolled extruded shapes. Ferrobend uses S30451 bar stock to ASTM A276 specifications for manufacturing stainless steel S30451 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 S30451 stainless steel round bars, square bars, hexagon bars and other extruded shapes.
Chemical Composition
| Identification Symbol | UNS Number | Elements | Composition % |
|---|---|---|---|
| 304N | S30451 | Carbon | 0.08 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 - 11.00 | ||
| Nitrogen | 0.10 - 0.16 |
Mechanical Properties
| Property | Value |
|---|---|
| Condition | A |
| Finish | Hot-Finished & Cold Finished |
| Tensile Strength, min, ksi [MPa] | 80 [550] |
| Yield Strength, min, ksi [MPa] | 35 [240] |
| Elongation in 2 in. [50mm] or 4D, min, % | 30 |
| Reduction or Area, min, % | -- |
| 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 | -- | -- | -- |
