Description
4140 Chromoly Tubing & AISI 4140 Pipe Supplier
Grade AISI 4140 is a versatile low alloy steel containing chromium, molybdenum, and manganese. Compared to Grade 4130, it has a slightly higher carbon content, which enhances its strength and other mechanical properties. AISI 4140 steel is known for its balance of toughness, wear resistance, and fatigue strength, making it ideal for numerous industrial applications.
Key Properties of AISI 4140 Pipe:
- Strength and Durability: Due to its higher carbon content, AISI 4140 offers better strength compared to AISI 4130.
- Corrosion Resistance: It provides good atmospheric corrosion resistance, making it suitable for outdoor or harsh environments.
- Mechanical Properties: The alloy boasts excellent toughness and fatigue resistance, making it ideal for high-stress applications.
- Wear Resistance: AISI 4140 pipes also offer strong wear resistance, enhancing their longevity.
Manufacturing Process:
- Heat Treatment: AISI 4140 undergoes heat treatment to improve its mechanical properties like hardness and strength.
- Cold & Hot Finishing: The production of AISI 4140 pipes involves hot working, followed by cold finishing for precise dimensions and smooth surfaces.
- Self-Scaling: AISI 4140 exhibits self-scaling properties, reducing the need for additional protective coatings and minimizing maintenance costs.
AISI 4140 Pipe Applications:
- High-Stress Environments: Commonly used in structural and mechanical tubing applications where high strength and toughness are critical.
- Boilers & Pressure Vessels: Its ability to withstand high temperatures makes it suitable for boilers and high-pressure vessels.
- Oil & Gas Industry: Used in applications that require corrosion resistance and strength in harsh environments.
- Automotive & Aerospace: AISI 4140’s fatigue strength makes it suitable for demanding applications like crankshafts and other automotive components.
AISI 4140 Pipe Specifications:
| Specification | Details |
|---|---|
| Standard | AISI 4140, ASTM A519 (with IBR) |
| Size Range | 1/2” NB to 36” NB |
| Thickness | 3-12mm |
| Schedules | SCH 40, SCH 80, SCH 160, XS, XXS |
| Origin | European, Japanese, Korean, US, Indian (No Chinese) |
| Tolerance | Cold Drawn: +/-0.1mm, Cold Rolled: +/-0.05mm |
| Craft | Cold Rolled, Cold Drawn |
| Form | Round, Square, Rectangular, Hydraulic |
| End Type | Plain End, Beveled End, Threaded |
| Length | Standard, Double, or Custom Length |
| Additional Testing | NACE MR0175, TM0177, TM0284, HIC, SSC, H2 Service, IBR |
Types of AISI 4140 Steel Pipe:
- Seamless Pipes: Manufactured for high-temperature service and extreme stress conditions.
- Welded Pipes: Cost-effective and suitable for less critical applications.
- ERW Pipes: Electric resistance welded pipes for specific structural applications.
- Fabricated Pipes: Custom fabricated to meet precise requirements in various shapes and forms.
