ASTM A182 F1 Flange Manufacturer
We specialize in manufacturing and supplying forged alloy steel flanges in ASTM A182 grade F1 — delivering exceptional resistance to high temperatures, pressure, and corrosion for your industrial applications.
What Are ASTM A182 F1 Flanges?
ASTM A182 F1 refers to forged low-alloy steel flanges made from chromium-molybdenum (1Cr-0.5Mo) steel.
This grade offers a desirable combination of high-temperature resistance, toughness, and resistance to stress corrosion — making it widely used in power generation, petroleum, and chemical processing applications.
| Property | Product name |
| EN | 1.5415 |
| Short Name | 16Mo3 |
| AISI/ASTM | F1 |
| Applicable Standards | EN 10028-2; ASTM A182 |
Chemical Compostion of ASTM A182 F1
| Grade/Identification Symbol | UNS Designation | Carbon, % | Manganese, % | Phosphorus, % | Sulfur, % | Silicon, % | Nickel, % | Chromium, % | Molybdenum, % | Niobium⁸, % | Titanium, % | Other Elements, % |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| F 1 | K12822 | 0.28 | 0.60–0.90 | 0.045 | 0.045 | 0.15–0.35 | … | … | 0.44–0.65 | … | … | … |
Mechanical Property of ASTM A182 F1
| Grade Symbol | Tensile Strength, min, ksi [MPa] | Yield Strength, min, ksi [MPa]¹ | Elongation in 2 in. [50 mm] or 4D, min, % | Reduction of Area, min, % | Brinell Hardness Number, HBW, unless otherwise indicated |
|---|---|---|---|---|---|
| F 1 | 70 [485] | 40 [275] | 20 | 30 | 143–192 |
Standard Specification
✅ Specification: ASTM A182 — Standard Specification for Forged or Rolled Alloy Steel Flanges, Fittings, Valves, and Parts
✅ Grade: F1 (1Cr-0.5Mo) — Low alloy chromium molybdenum forged steel
✅ Class: 150, 300, 600, 900, 1500, 2500 or custom
✅ Facing: Raise face (RF), flat face (FF), or ring joint (RTJ)
✅ Type: Weld neck, slip-on, blind, threaded, lap joint, socket weld, or custom
✅ Size range: NPS 1/2” (15) — 48” (1200)
✅ Wall thickness: According to ASME B16.5 or custom schedules
Application of ASTM A182 F1
✅ Power Generation (High-Pressure Turbines, Superheaters, Heat Exchange)
✅ Petrochemical and Oil & Gas Pipelines
✅ Refinery Applications (Fluids under high pressure or temperature)
✅ Boiler and Heat Exchange Equipment
✅ Pressure Vessel Connection
✅ Structural Applications in Harsh Environments
Quality Control and Inspection
Each ASTM A182 Gr F1 Flange we produce are with strict quality control and testing:
✅ Visual Inspection (Surface Finish, Dimensions)
✅ Ultrasonic Inspection (Flaws, Thickness)
✅ Positive Material Identification (PMI)
✅ Material Traceability (with EN 10204 3.1 or 3.2 certificate)
✅ Heat Treatment Record
ASTM A182 F1 is a low-alloy forged steel grade with 1/2% chromium and molybdenum, designed for service under high pressure and temperature (typically up to 500°C or 933°F). Contact us for a quote
Order Example – ASTM A182 F1 Flange
Item: Weld Neck Flange
Standard: ASME B16.5
Material: ASTM A182 Grade F1
Size: 10"
Pressure: Class 900
Facing: RTJ
Thickness: SCH 80
Quantity: 16 PCS
Certification: EN 10204 3.1
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ASTM A182 F1 Weld neck Flanges
ASME B16.5 1/2″ to 24″ Raise Face
Class 150/300/600/900/1500/2500
ASTM A182 F1 Blind Flanges
ASME B16.5 1/2″ to 24″ Raise Face
Class 150/300/600/900/1500/2500.
ASTM A182 F1 Slip on Flanges
ASME B16.5 1/2″ to 24″ Raise Face
Class 150/300/600/900/1500/2500
