A182 F51 Ball Valve
ASTM A182 F51 Ball Valve is made of ASTM A182 F51 (UNS S31803) that is a forging material specification for improved corrosion resistance.The ball valve body and trim are all made of ASTM A182 F51.
ASTM A182 F51 is a mixed microstructure of austenitic and ferrite. It has improved strength over ferritic and austenitic steel grades with similar corrosion resistance qualities.
ASTM A182 F51 Ball Valve Specifications
| Part Name | Body/Bonnet | Bolting | Stem | Ball | Seat | Spring |
| Material | ASTM A182 F51 | A193 B8M/A194 8M | ASTM A182 F51 | ASTM A182 F51 | RPTFE, Devlon, PEEK, etc. | Inconel 725 |
ASTM A182 F51 Ball Valve Test Pressure
| Test Type | Test Fluid | Test Pressure (bar) | |||||
| Class 150 | Class 300 | Class 600 | Class 900 | Class 1500 | Class 2500 | ||
| Shell Test | Water | 30 | 77.55 | 155.10 | 232.65 | 38.79 | 64.64 |
| High Pressure Seat Test | Water | 22 | 56.87 | 113.74 | 170.61 | 284.46 | 47.40 |
| Low Pressure Seat Test | Air | 6 | 6 | 6 | 6 | 6 | 6 |
A182 F51 Chemical Composition, %
| ASTM | UNS Designation | C | Mn | P | S | Si | Ni | Cr | Mo | Co | Ti | Other |
| A182 F 51 | 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 |
Tensile and Hardness RequirementA
| Grade | 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 |
| F51 | 90 [620]C | 65 [450] | 25 | 45 | . . . |
AWhere ellipses appear in this table, there is no requirement and the test for the value need neither be performed nor a value reported.
Working Pressures by Class, bar
| Temperature, ℃ |
150 | 300 | 600 | 900 | 1500 | 2500 | 4500 |
| -29 to 38 | 20.0 | 51.7 | 103.4 | 155.1 | 258.6 | 430.9 | 775.7 |
| 50 | 19.5 | 51.7 | 103.4 | 155.1 | 258.6 | 430.9 | 775.7 |
| 100 | 17.7 | 50.7 | 101.3 | 152.0 | 253.3 | 422.2 | 759.9 |
| 150 | 15.8 | 45.9 | 91.9 | 137.8 | 229.6 | 382.7 | 688.9 |
| 200 | 13.8 | 42.7 | 85.3 | 128.0 | 213.3 | 355.4 | 639.8 |
| 250 | 12.1 | 40.5 | 80.9 | 121.4 | 202.3 | 337.2 | 606.9 |
| 300 | 10.2 | 38.9 | 77.7 | 116.6 | 194.3 | 323.8 | 582.8 |
| 325 | 93 | 38.2 | 76.3 | 114.5 | 190.8 | 318.0 | 572.5 |
| 350 | 8.4 | 37.6 | 75.3 | 112.9 | 188.2 | 313.7 | 564.7 |
| 375 | 7.4 | 37.4 | 74.7 | 112.1 | 186.8 | 311.3 | 560.3 |
| 400 | 6.5 | 36.5 | 73.3 | 109.8 | 183.1 | 304.9 | 548.5 |
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Valve type (ball, gate, globe, check etc.), valve size, pressure class, valve material, and end connection (flanged, butt welding etc.)
