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ASTM A350 LF6 Flanges

HomeASTM A350 LF6 Flanges

ASTM A350 LF6 Flanges | ASTM A350 LF6 Carbon Steel Flanges | LF6 Low Temperature Flanges, ASTM A350 LF6 Forged Steel Flanges | ASTM A350 LF6 Weld Neck & Blind Flanges

Table of Content

What are ASTM A350 LF6 Flanges?

 ‘Forged Carbon Steel Flanges’ is what LF6 Flanges ASTM A350 describes this piping material family the best.  They are specifically engineered with ‘Precision’ in accordance with the ASTM A350 specification for applications that require conditions involving low and high temperature. 

 Typically,  ASTM A350 LF6 Flanges contain  alloying elements such as nickel, chromium, and molybdenum. Hence, they are renowned for their superior toughness and mechanical strength.

Above all, we at Jay Steel Corporation a leading ASTM A350 LF6 Flanges manufacturer in India offer you Premium Quality A350 LF6 Flanges ASTM at an affordable ASTM A350 LF6 Flanges Price in India.

ASTM A350 LF6 Flanges Specifications Table

  • Material Standard : ASTM A350 / ASME SA350
  • Grade : LF6
  • Product : Forged Carbon Steel Flanges
  • Steel Type : Nickel Alloyed Low-Temperature Carbon Steel
  • Manufacturing Process : Open Die Forged / Ring Rolled
  • Heat Treatment : Normalized & Tempered or Quenched & Tempered
  • Impact Test : Charpy V-Notch (Low Temperature Service)

Chemical Features of ASTM A350 LF6 Flanges

Element Composition
Carbon (C) 0.22 % max
Manganese (Mn) 1.15 – 1.50 %
Phosphorus (P) 0.025 % max
Sulfur (S) 0.025 % max
Silicon (Si) 0.15 – 0.30 %
Nickel (Ni) 0.40 % max
Chromium (Cr) 0.30 % max
Molybdenum (Mo) 0.12 % max
Copper (Cu) 0.40 % max
Columbium / Niobium (Cb/Nb) 0.02 % max
Vanadium (V) 0.04 – 0.11 %
Nitrogen (N) 0.01 – 0.030 %

Mechanical Properties of ASTM A350 LF6 Flanges

Property Value
Tensile Strength 515 – 690 MPa
Yield Strength (0.2% Offset) ≥ 345 MPa
Elongation ≥ 20 %
Reduction of Area ≥ 30 %
Impact Test Temperature −46 °C
Charpy V-Notch Impact Energy ≥ 27 J

Types of A350 LF6 Flanges

There are several types of A350 LF6 Flanges and they are given below:

ASTM A350 Lf6 Slip On Flanges
A350 Carbon Steel Weld Neck Flanges
A350 Carbon Steel Lf6 Lap Joint Flanges
ASTM A350 Lf6 Threaded Flanges
ASTM A350 Lf6 Socket Weld Flanges
A350 Carbon Steel Long Weld Neck Flanges

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Equivalent Grades of ASTM A350 LF6 Flanges

Standard / Specification Equivalent Grade
ASTM / ASME A350 LF3
EN (European) EN 10222-4 P460NL1
DIN DIN 1.8915
ISO ISO 9327-4
JIS (Japan) JIS G4051 SCM420
GB (China) GB 20MnMo
IS (India) IS 2002 Gr. 4

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Industrial Applications of ASTM A350 LF6 Flanges

Due to its high strength, excellent toughness, and reliable performance, ASTM A350 LF6 Flanges are used in a wide range of industries as applications. They are given below: 

Application Industries
  • Petrochemical Industry
  • Oil & Gas Indstry
  • LNG and Cryogenic Applications
  • Power Generation Plants
  • Offshore and Marine Engineering
  • Refinery Piping Systems
  • Pressure Vessels and Heat Exchangers
  • Fertilizer and Process Industries
  • Industrial Gas Processing
  • Chemical Processing Plants

Why Choose Jay Steel Corporation ?

There are several reasons why you need to choose  Jay Steel Corporation when you look to buy  ASTM A350 LF6 Flange and other products. They are as given below: 

  • Provision of Comprehensive Product Range & Expertise
  • Following Quality Assurance & Standards Compliance
  • Strong Manufacturing Capability
  • Offering Customized Solutions at competitive pricing

FAQs

What is ASTM A350 LF6 Carbon Steel Flange used for?

Typically, ASTM A350 LF6 carbon steel flanges are used mainly in low-temperature and high-pressure piping systems. They are generally used for conditions that are demanding. 

What types of ASTM A350 LF6 Flanges are available?

 The few types of ASTM A350 LF6 Flanges that are available include the following given below: 

  • Slip-On Flange (SO)
  • Weld Neck Flange (WN)
  • Blind Flange (BL)
  • Socket Weld Flange (SW)
  • Threaded Flange (TH)
  • Lap Joint Flange (LJ)
  • Long Weld Neck Flange (LWN)

How is ASTM A350 LF6 different from ASTM A350 LF3 flanges?

 The essential differences between ASTM A350 LF6  and ASTM A350 LF3 flanges are given in the table below: 

Parameter ASTM A350 LF3 Flanges ASTM A350 LF6 Flanges
Material Type Nickel alloy carbon steel Low-alloy carbon steel
Nickel Content High (≈ 3.0–3.7%) Very low / trace
Carbon Content Low Controlled (slightly higher than LF3)
Yield Strength Lower Higher
Tensile Strength Moderate Moderate to high (depends on class)
Low-Temperature Toughness Excellent due to nickel Very good through alloying & heat treatment
Minimum Service Temperature Suitable for very low temperatures Suitable for low temperatures (not extreme cryogenic)
Impact Testing Mandatory at low temperatures Mandatory at specified low temperatures
Weldability Good Good
Cost Higher (due to nickel content) More economical
Typical Applications Cryogenic piping, LNG, low-temperature services Refineries, oil & gas, pressure vessels, low-temperature pipelines
Strength vs Toughness More toughness-oriented More strength-oriented
Common Standards ASME B16.5, ASME B16.47 ASME B16.5, ASME B16.47

What are the pressure ratings and sizes available for A350 LF6 Flanges?

The pressure ratings and sizes table of ASTM A350 LF6 Flanges are given below: 

Standard Nominal Size Range (NPS / DN) Pressure Ratings (Class / PN)
ASME B16.5 ½″ – 24″ (DN15 – DN600) Class 150, 300, 400, 600, 900, 1500, 2500
ASME B16.47 Series A 26″ – 48″ (DN650 – DN1200) Class 150, 300, 400, 600, 900
ASME B16.47 Series B 26″ – 48″ (DN650 – DN1200) Class 75, 150, 300, 400, 600
EN / DIN / PN Standards DN15 – DN1200 PN6, PN10, PN16, PN25, PN40, PN63, PN100

How can I verify the quality and certification of ASTM A350 LF6 Flanges?

 The verification process of ASTM A350 LF6 Flanges includes the following stages given below: 

  • Check Manufacturer’s Test Certificate (MTC)
  • Review the Supplier’s Quality Assurance Documents
  • Verify Compliance With ASTM A350/A350M Specification
  • Third-Party or Independent Inspection
  • Physical Inspection on Receipt
  • Lab Retesting (Optional)
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