Specifications
Brand Name :
LHTi
Model Number :
Titanium Long Weld Flanges
Certification :
ISO9001,CE, API,etc
Place of Origin :
Baoji, China
MOQ :
100 pieces
Price :
as per your requirement
Payment Terms :
L/C, D/A, D/P, T/T, Western Union
Supply Ability :
100-200 Ton/Tons Per Month
Delivery Time :
about 7-14 days for delivery
Packaging Details :
All goods are packed by seaworth shipment materials or required by buyer
Corrosion Resistance :
High
Dimensions :
DN15-DN1200
Specifications :
Complete
Sealing Type :
RF
Processes :
Casting, Forging, Machining, Etc.
Connection Type :
Weld Neck
Process :
Integral body forged
Testing :
UT% PT%
Nda Test :
UT
Origin :
Shaanxi Baoji
Class :
CL300
Flange Standards :
ASME B16.5
Standard :
ANSI, JIS, DIN, Etc.
Bolt Circle Diameter :
3.88 inches
Wall Thickness :
Sch10s—Sch80s or bigger to Sch160s
Description

Class 300 Long Weld Neck Flange Raised Face: Comparison of Titanium Grade 2, Grade 5, Grade 7, Carbon Steel, and Stainless Steel

Introduction:

Introduction

The Class 300 Long Weld Neck Flange Raised Face is widely used in industrial piping systems to connect pipes securely and handle various operating conditions. These flanges come in multiple materials, including Titanium Grades 2, 5, and 7, as well as Carbon Steel and Stainless Steel. Each material offers distinct advantages in terms of strength, corrosion resistance, and suitability for specific applications. Understanding these differences is essential when selecting the right flange material for a particular application.

This article explores the properties and advantages of these materials, and a comparison table will be provided to highlight the key differences between Titanium Grades 2, 5, 7, Carbon Steel, and Stainless Steel.

Class 300 Long Weld Neck Flange Raised Face Comparison of Titanium Grade 2 Grade 5 Grade 7 Carbon Steel and Stainless Steel

Material Characteristics and Comparison

Titanium Grade 2
  • Composition: Commercially pure titanium (99% Ti).
  • Corrosion Resistance: Excellent resistance to a wide range of chemicals, including chlorides and seawater.
  • Strength: Moderate strength, suitable for general-purpose applications.
  • Applications: Marine, chemical, and medical industries.
  • Advantages: Exceptional corrosion resistance, excellent weldability, and biocompatibility.
Titanium Grade 5 (Ti-6Al-4V)
  • Composition: 90% Titanium, 6% Aluminum, 4% Vanadium.
  • Corrosion Resistance: Excellent, with higher resistance to high-temperature oxidation compared to Grade 2.
  • Strength: High tensile strength and fatigue resistance.
  • Applications: Aerospace, military, chemical processing, and high-performance applications.
  • Advantages: High strength-to-weight ratio, exceptional performance in high-stress environments, and high resistance to heat and corrosion.
Titanium Grade 7
  • Composition: 90% Titanium, 6% Aluminum, 2% Palladium.
  • Corrosion Resistance: Excellent resistance to acids and chlorides, with added resistance to oxidation.
  • Strength: Similar to Grade 2 but enhanced with higher corrosion resistance.
  • Applications: Chemical processing, especially in highly aggressive environments.
  • Advantages: Improved corrosion resistance in acidic and oxidizing environments, weldability, and higher reliability in harsh conditions.
Carbon Steel
  • Composition: Primarily iron with carbon content ranging from 0.02% to 2.1%.
  • Corrosion Resistance: Poor; susceptible to rust and corrosion, especially in acidic or moist environments.
  • Strength: Good tensile strength but lower than stainless steel and titanium alloys.
  • Applications: General industrial applications, pipelines, and construction.
  • Advantages: Cost-effective, high availability, and strength for less aggressive environments.
Stainless Steel
  • Composition: Primarily iron with 10-20% chromium and other alloying elements such as nickel, molybdenum.
  • Corrosion Resistance: Excellent, particularly against corrosion from most chemicals, oxidizing acids, and chlorides.
  • Strength: High strength, better than carbon steel and comparable to titanium alloys.
  • Applications: Chemical industries, food processing, marine, and medical applications.
  • Advantages: Exceptional durability, good corrosion resistance, and strength, especially in non-extreme conditions.

Comparison Table:

Property Titanium Grade 2 Titanium Grade 5 Titanium Grade 7 Carbon Steel Stainless Steel
Composition 99% Titanium 90% Titanium, 6% Aluminum, 4% Vanadium 90% Titanium, 6% Aluminum, 2% Palladium Iron + Carbon Iron + Chromium (10-20%) + Nickel
Corrosion Resistance Excellent (especially in chlorides, seawater) Excellent (better high-temperature resistance) Excellent (higher corrosion resistance in acidic environments) Poor (rusts easily in moisture, acids) Excellent (against oxidizing acids, chlorides)
Tensile Strength Moderate High (stronger than Grade 2) Moderate to High Moderate High
Fatigue Resistance Moderate Excellent High Low Good
Temperature Resistance Moderate High (better heat resistance) High (oxidation resistance) Low Moderate
Applications Marine, Chemical, Medical Aerospace, Military, Chemical Processing Chemical Processing (aggressive environments) General Industry, Construction Chemical, Food Processing, Medical
Advantages Corrosion resistance, Weldability Strength, High-performance, Heat resistance Enhanced corrosion resistance, Weldability Cost-effective, Strength Durability, Corrosion resistance
Cost Expensive Expensive Expensive Low Moderate to High

Choosing the Right Flange Material:

When selecting the Class 300 Long Weld Neck Flange Raised Face, the choice of material largely depends on the operating conditions and the specific application:

Titanium Grades (2, 5, 7):

  • Grade 2 is ideal for applications requiring superior corrosion resistance in environments like marine and chemical processing.
  • Grade 5 is perfect for high-performance applications like aerospace and military, where high strength and lightweight properties are crucial.
  • Grade 7 is best for chemical processing where enhanced corrosion resistance is needed, particularly in acidic environments.

Carbon Steel:

  • Best suited for general industrial applications that do not involve extreme corrosive environments. Carbon steel is a cost-effective choice but has limited corrosion resistance compared to titanium or stainless steel.

Stainless Steel:

  • Ideal for applications requiring both high strength and corrosion resistance in moderate environments. Stainless steel flanges are commonly used in food processing, pharmaceuticals, and other industries where hygiene and durability are important.

Class 300 Long Weld Neck Flange Dimensions:

Size in Inch Size in mm Outer Dia. Flange Thick. Hub OD Weld Neck OD RF Dia. RF Height PCD Hub Length No of Bolts Bolt Size UNC Machine Bolt Length RF Stud Length Hole Size ISO Stud Size
A B C D E F G H
1/2 15 95 12.7 38 21.3 34.9 2 66.7 As Required 4 1/2 55 65 5/8 M14
3/4 20 115 14.3 48 26.7 42.9 2 82.6 As Required 4 5/8 65 75 3/4 M16
1 25 125 15.9 54 33.4 50.8 2 88.9 As Required 4 5/8 65 75 3/4 M16
1 1/4 32 135 17.5 64 42.2 63.5 2 98.4 As Required 4 5/8 70 85 3/4 M16
1 1/2 40 155 19.1 70 48.3 73 2 114.3 As Required 4 3/4 75 90 7/8 M20
2 50 165 20.7 84 60.3 92.1 2 127 As Required 8 5/8 75 90 3/4 M16
2 1/2 65 190 23.9 100 73 104.8 2 149.2 As Required 8 3/4 85 100 7/8 M20
3 80 210 27 117 88.9 127 2 168.3 As Required 8 3/4 90 110 7/8 M20
3 1/2 90 230 28.6 133 101.6 139.7 2 184.2 As Required 8 3/4 95 110 7/8 M20
4 100 255 30.2 146 114.3 157.2 2 200 As Required 8 3/4 95 115 7/8 M20
5 125 280 33.4 178 141.3 185.7 2 235 As Required 8 3/4 110 120 7/8 M20
6 150 320 35 206 168.3 215.9 2 269.9 As Required 12 3/4 110 120 7/8 M20
8 200 380 39.7 260 219.1 269.9 2 330.2 As Required 12 7/8 120 140 1 M24
10 250 445 46.1 321 273 323.8 2 387.4 As Required 16 1 140 160 1 1/8 M27
12 300 520 49.3 375 323.8 381 2 450.8 As Required 16 1 1/8 145 170 1 1/4 M30
14 350 585 52.4 425 355.6 412.8 2 514.4 As Required 20 1 1/8 160 180 1 1/4 M30
16 400 650 55.6 483 406.4 469.9 2 571.5 As Required 20 1 1/4 165 190 1 3/8 M33
18 450 710 58.8 533 457 533.4 2 628.6 As Required 24 1 1/4 170 195 1 3/8 M33
20 500 775 62 587 508 584.2 2 685.8 As Required 24 1 1/4 185 205 1 3/8 M33
24 600 915 68.3 702 610 692.2 2 812.8 As Required 24 1 1/2 205 230 1 5/8

Manufacturing Process:

Material Selection: The first step in manufacturing titanium flanges involves selecting high-quality titanium alloys, either Grade 2 or Grade 5, based on the application’s specific requirements. Grade 2 is chosen for its excellent corrosion resistance and weldability, while Grade 5 is selected for higher strength demands.

Forming and Machining: The titanium billets are heated to a high temperature and then formed into flange shapes using techniques like forging or casting. Once the shape is formed, the flange undergoes precision machining to achieve the correct dimensions, including the raised face and bolt holes.

Heat Treatment: Both Grade 2 and Grade 5 titanium alloys may undergo heat treatment processes to enhance their mechanical properties. For Grade 5, this typically involves a solution treatment followed by aging to increase strength.

Surface Finishing: The flange surfaces, especially the raised face, are polished to a smooth finish to improve the sealing surface when paired with gaskets. This step is critical to ensuring leak-tight performance and meeting the required surface finish standards.

Inspection and Testing: Each flange is subjected to rigorous quality control, including visual inspections, dimensional checks, and non-destructive testing such as ultrasonic or X-ray inspection to ensure there are no internal defects. Pressure testing may also be performed to verify the flange’s ability to withstand the specified pressure rating.

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Class 300 Long Weld Neck Flange Raised Face Comparison of Titanium Grade 2 Grade 5 Grade 7 Carbon Steel and Stainless Steel

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Brand Name :
LHTi
Model Number :
Titanium Long Weld Flanges
Certification :
ISO9001,CE, API,etc
Place of Origin :
Baoji, China
MOQ :
100 pieces
Price :
as per your requirement
Contact Supplier
Class 300 Long Weld Neck Flange Raised Face Comparison of Titanium Grade 2 Grade 5 Grade 7 Carbon Steel and Stainless Steel

Baoji Lihua Nonferrous Metals Co., Ltd.

Verified Supplier
6 Years
Shaanxi, baoji
Since 2006
Business Type :
Manufacturer
Total Annual :
2000000-4000000
Certification Level :
Verified Supplier
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