ASTM A182 F9 is a specification for forged or rolled alloy-steel pipe flanges, forged fittings, and valves and parts for high-temperature service. The F9 designation specifically refers to the alloy steel grade, which in this case, is a chromium-molybdenum alloy steel. Here are some key aspects of ASTM A182 F9 Alloy Steel Flanges:
Types of Alloy Steel F9 Flanges:
Table Of Content
Features of ASTM A182 Alloy Steel F9 Flanges:
Applications of Alloy Steel F9 Flanges:
It's essential to follow the specific requirements outlined in the ASTM A182 F9 standard for manufacturing, testing, and dimensional specifications when using these flanges in various industrial applications.
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Standard | ASTM A182 / ASME SA182 |
Dimensions | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
Size | 1/2" (15 NB) to 48" (1200NB), DN10~DN5000 |
Pressure Rating | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
Pressure Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
JIS | 16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K |
Flange Connection / Flange Face Type | Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove, Flange Pipe. |
Types of Flanges | Threaded / Screwed / Forged / Plate |
Coating | Yellow Transparent, Zinc Plated, Anti-rust Paint, Oil Black Paint, Cold and Hot Dip Galvanized |
Test Of Flange | Direct-reading Spectrograph, Ultrasonic flaw detector, Magnetic particle detector, X-ray detector, Hydrostatic testing machine. |
Production Technique Used | Heat treated, Forged and Machined |
Equipment | Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc. |
Test Certificates | EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc |
Flange Forging
Compared to cast flanges, forged flanges typically contain less carbon and are less likely to corrode. Forgings have superior mechanical qualities, a thicker structure, and a more streamlined shape.
Heat Treatment
The flange is undergoing heat treatment; the forging process has the slowest total cooling pace, while the standardizing and reducing processes have faster cooling speeds. The flange is undergoing heat treatment; the forging process has the slowest total cooling pace, while the standardizing and reducing processes have faster cooling speeds.
Forging Rolling
Roll forging is a forging technique that shapes a metal object by using opposing rolls. Although roll forging employs rolls to accomplish the desired material deformation, it is categorized as a metal forging procedure rather than a rolling procedure.
Rust Prevention
For steel flanges, conventional rust protection treatments include hot dip galvanizing, electro galvanizing (cold), varnish paint coating, black paint coating, black phosphating treatment, yellow (golden) paint coating, etc.
STANDARD | UNS | WERKSTOFF NR. |
Alloy Steel F9 | K90941 | 1.7386 |
Grade | C | Mn | P | S | Si | Ni | Ch | Mo | Cb |
F9 | 0.15 | 0.30-0.60 | 0.030 | 0.030 | 0.50-1.00 | - | 8.0-10.0 | 0.90-1.10 | - |
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
F9 | 585 | 380 | 20 | - | 179-217 |
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