NB350 FLANGE CL 900 WN RF,FORGED STEEL ASTM A182-F11

The flange has a nominal bore (NB) size of 350. Specific dimensions, such as outer diameter, bolt hole size, and thickness, depend on the standard (e.g., ASME B16.5) and the flange rating.

Material Description:

The flange is made from Forged Steel ASTM A182-F11. ASTM A182 is a standard specification for forged or rolled alloy and stainless steel pipe flanges, forged fittings, and valves and parts for high-temperature service. Grade F11 specifically refers to a low alloy steel containing 1.25% chromium and 0.5% molybdenum.

Material Composition:

ASTM A182-F11 typically contains:

Carbon (C): 0.15% max

Manganese (Mn): 0.30-0.60%

Phosphorus (P): 0.025% max

Sulfur (S): 0.025% max

Silicon (Si): 0.50-1.00%

Chromium (Cr): 1.00-1.50%

Molybdenum (Mo): 0.44-0.65%

Mechanical Properties:

ASTM A182-F11 typically exhibits the following mechanical properties:

Tensile Strength: 415-585 MPa

Yield Strength: 205 MPa (min)

Elongation: 20% (min)

Flange Inspection Considerations:

Visual inspection for surface defects such as cracks, porosity, or irregularities.

Dimensional checks to ensure conformity with specifications.

Non-destructive testing (NDT) methods such as ultrasonic testing or radiographic testing may be employed to detect internal defects.

Application Range:

Flanges with these specifications are commonly used in high-pressure and high-temperature applications, particularly in industries such as oil and gas, petrochemical, and power generation.

Common Q&A:

Q: Can ASTM A182-F11 flanges withstand high temperatures? A: Yes, ASTM A182-F11 forged steel flanges are suitable for use in high-temperature applications due to their composition and mechanical properties.

Q: What is the significance of Class 900 rating for the flange? A: Class 900 indicates the pressure rating of the flange, which is designed to withstand pressures up to 900 pounds per square inch (psi) at ambient temperatures.

Q: Are ASTM A182-F11 flanges weldable? A: Yes, ASTM A182-F11 forged steel flanges are weldable using standard welding techniques suitable for low alloy steels.

SSM Capabilities:

SSM is capable of manufacturing flanges with the specified dimensions, material grade, and end configurations. Please feel free to contact us for inquiries or purchases.

If you have any further questions or require assistance regarding the flange with the specified specifications, please don't hesitate to reach out.

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