ASTM A182 UNS K21590
ASTM A182 UNS K21590 is a forging material specification for K21590 grade alloy steel and is used for manufacturing bare forgings or forged and machined products for applications involving high temperature service. Boltport Fasteners offers forged bolts, screws, nuts, studs, threaded rods and similar fasteners or bolting parts in astm a182 UNS K21590 specification.
ASTM A182 specification covers requirements such as chemical composition, mechanical properties, heat treatment and other supplementary requirements for K21590 alloy steel forgings and forged products.
Chemical Composition
| Grade Symbol | UNS Number | Alloy | Elements | Composition % |
|---|---|---|---|---|
|
F22 Class 1 F22 Class 3 |
K21590 | chromium-molybdenum | Carbon | 0.05 - 0.15 |
| Manganese | 0.30 - 0.60 | |||
| Phosphorus | 0.040 | |||
| Sulfur | 0.040 | |||
| Silicon | 0.50 | |||
| Chromium | 2.00 - 2.50 | |||
| Molybdenum | 0.87 - 1.13 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength, min, ksi [MPa] | 60 [415] |
| Yield Strength, min, ksi [MPa] | 30 [205] |
| Elongation in 2 in. [50mm] or 4D, min, % | 20 |
| Reduction or Area, min, % | 35 |
| Brinell Hardness Number, HBW | 170 max |
Fasteners
-
Bolts -
Screws -
Stud Bolts -
Nuts -
Threaded Rods -
Pins -
Washers -
Components