ASTM A276 Type 420
ASTM A276 Type 420 is a material grade specification for cold-finished or hot-finished bars in 420 stainless steel, available in form of rounds, square, hexagons and other hot rolled extruded shapes. Boltport uses 420 bar stock to ASTM A276 specifications for manufacturing stainless steel 420 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 420 stainless steel round bars, square bars, hexagon bars and other extruded shapes.
Chemical Composition
| Grade Symbol | UNS Number | Elements | Composition, % |
|---|---|---|---|
| Type 420 | S42000 | Carbon | 0.15 min |
| Manganese | 1.00 max | ||
| Phosphorus | 0.040 max | ||
| Sulfur | 0.030 max | ||
| Silicon | 1.00 max | ||
| Chromium | 12.00 - 14.00 |
Mechanical Properties
| Property | Value | |
|---|---|---|
| Finish | Hot-Finished | Cold Finished |
| Tensile Strength, min, ksi [MPa] | .... | .... |
| Yield Strength, min, ksi [MPa] | .... | .... |
| Elongation in 2 in. [50mm] or 4D, min, % | .... | .... |
| Reduction or Area, min, % | .... | .... |
| Brinell Hardness Number, HBW | 241 | 255 |
Fasteners
-
Bolts -
Screws -
Studs -
Nuts -
Threaded Rods -
Pins -
Washers -
Components