ASTM A182 F11 Forging Specification for Flange Fittings

ASTM A182 F11 Forging Specification for Flange & Fittings

ASTM A182 F11 forging is a low alloy chromium-molybdenum steel used for the manufacture of flanges, forged fittings, valves, and pressure-containing components for high-temperature and high-pressure service.
This page provides the complete ASTM A182 F11 Forging Specification, including chemical composition, mechanical properties, heat treatment requirements, and typical applications for flange and fittings.

ASTM A182 Standard

ASTM A182 is the standard specification for forged or rolled alloy and stainless steel pipe flanges, forged fittings, valves, and parts for high-temperature service.
Materials produced in accordance with ASTM A182 are widely used in power generation, petrochemical, refinery, and pressure vessel systems.

ASTM A182 F11 Material Specification

  • Material Grade: ASTM A182 F11

  • Standard: ASTM A182 / ASME SA182

  • Material Type: Chromium-Molybdenum Low Alloy Steel

  • UNS Number: K11572

  • Product Form: Forgings, Flanges, Forged Fittings, Valve Components

  • Service Condition: High-temperature and high-pressure service

ASTM A182 F11 forgings offer excellent creep resistance, oxidation resistance, and strength at elevated temperatures, making them suitable for critical pressure systems.

Typical Products of ASTM A182 F11

ASTM A182 F11 material is commonly supplied in the following forged forms:

  • Pipe flanges (Weld Neck, Slip-On, Blind, Socket Weld, Threaded)

  • Forged fittings (Elbow, Tee, Reducer, Coupling)

  • Valve bodies, bonnets, and pressure parts

  • Custom forged components

Chemical Composition of ASTM A182 F11 (Typical, %)

Element Requirement
Carbon (C) 0.05 – 0.15
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 (Minimum Requirements)

Property Requirement
Tensile Strength ≥ 415 MPa (60,000 psi)
Yield Strength ≥ 205 MPa (30,000 psi)
Elongation ≥ 20 %
Reduction of Area ≥ 30 %

Heat Treatment Requirements

ASTM A182 F11 forgings shall be supplied in one of the following heat-treated conditions, as specified by the standard:

  • Annealed

  • Normalized and tempered

  • Quenched and tempered (when specified)

Proper heat treatment ensures optimal mechanical properties, creep strength, and metallurgical stability at elevated temperatures.

Dimensions & Applicable Standards

ASTM A182 F11 flanges and fittings are manufactured according to relevant dimensional standards, including:

  • ASME B16.5 – Pipe Flanges and Flanged Fittings

  • ASME B16.47 – Large Diameter Steel Flanges

  • ASME B16.11 – Forged Fittings

  • ASME B16.34 – Valves

Pressure-temperature ratings are governed by the applicable ASME standard.

Testing & Inspection

ASTM A182 F11 forgings are typically subjected to the following tests and inspections:

  • Chemical analysis

  • Tensile testing

  • Hardness testing

  • Heat treatment verification

  • Dimensional and visual inspection

  • Non-destructive testing (UT / MT, if required)

Mill Test Certificates EN 10204 3.1 are normally supplied.

Applications of ASTM A182 F11 Forgings

ASTM A182 F11 flanges and fittings are widely used in:

  • Power plants and boiler systems

  • Oil & gas pipelines

  • Refineries and petrochemical plants

  • High-temperature pressure vessels

  • Steam and thermal processing systems

Download ASTM A182 F11 Forging Specification PDF

Download the complete ASTM A182 F11 Forging Specification PDF, including:

  • Chemical composition limits

  • Mechanical property requirements

  • Heat treatment conditions

  • Dimensional and pressure references

👉 [Download ASTM A182 F11 Flange Forged Material Data Sheet PDF]
👉 Download ASME SA182 Standard PDF

ASTM A182 F11 FAQ

Q1: Is ASTM A182 F11 suitable for high-temperature service?
Yes. ASTM A182 F11 is specifically designed for elevated temperature and pressure applications.

Q2: What is the difference between ASTM A182 F11 and F22?
F22 contains higher chromium and molybdenum content, offering better creep resistance at higher temperatures compared to F11.

Q3: Can ASTM A182 F11 be used for flanges and forged fittings?
Yes. ASTM A182 F11 is commonly used for flanges, forged fittings, valves, and pressure components.

Related Products

The ASTM A182 F11 forged material specification is applicable to the following products: