Forgings, Fasteners, Boltings, Stud Bolts, Screws, Nuts
ASTM A182 F51 Specification covers forged low alloy steel and stainless steel piping components like flanges, fittings, valves used in pressure systems. Included are flanges, fittings, valves. ASTM A182 includes several grades of low alloy steels and ferritic, martensitic, austenitic, and ferritic-austenitic stainless steels based on design and service requirements.
| Grade/Identification Symbol |
UNS Designation | Composition, % | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| C | Mn | P | S | Si | Ni | Cr | Mo | CbB | Ti | Other Elements |
||||
| ASTM A182 Grade F51 |
S31803 | 0.030 | 2.00 | 0.030 | 0.020 | 1.00 | 4.5-6.5 | 21.0-23.0 | 2.5-3.5 | ... | ... | N 0.08-0.20 | ||
| Grade Symbol |
Tensile Strength, min, ksi [MPa] |
Yield Strength, min, ksi [MPa]B |
Elongation in 2 in. [50 mm] or 4D, min, % |
Reduction of Area, min, % |
Brinell Hardness Number, HBW, unless otherwise indicated |
|---|---|---|---|---|---|
| ASTM A182 Grade F51 |
90 [620] | 65 [450] | 25 | 45 | . . . |
| Grade | Heat Treat Type | Austenitizing/Solutioning Temperature, Minimum or Range, °F [°C]A | Cooling Media | Quenching Cool Below °F [°C] | Tempering Temperature, Minimum or Range, °F [°C] |
|---|---|---|---|---|---|
| ASTM A182 Grade F51 |
solution treat and quench | 1870 [1020] | liquid | 500 [260] | B |
| S1 | Macroetch Test |
|---|---|
| S2 | Heat Treatment Details |
| S3 | Material for Optimum Resistance to Stress-Corrosion Cracking |
| S4 | Corrosion Tests |
| S5 | Special Filler Metal |
| S6 | Hardness Test |
| S8 | Heat Treatment of Austenitic Forgings |
| S9 | Grain Size for Austenitic Grades |
| S10 | Stabilizing Treatment |
| S11 | Grain Size Requirements for Non-H-Grade Austenitic Steels Used Above 1000 °F [540 °C] |
| S12 | Detection of Detrimental Phases in Austenitic/Ferritic Stainless Steels |