Description
4140 Chromoly Tubing & AISI 4140 Pipe Supplier
Overview of AISI 4140 Chromoly Steel
Grade AISI 4140 is a low-alloy steel that incorporates chromium, molybdenum, and manganese as key alloying elements. Compared to Grade 4130, AISI 4140 has a slightly higher carbon content, contributing to its excellent mechanical properties. This versatile alloy offers good resistance to atmospheric corrosion and reasonable strength, making it suitable for a variety of applications.
Key Features of AISI 4140 Pipe
The seamless pipes made from AISI 4140 exhibit an exceptional combination of toughness, strength, fatigue resistance, and wear resistance. To enhance its mechanical properties, AISI 4140 undergoes heat treatment. One notable characteristic is its self-scaling property, which reduces the need for additional treatment and associated costs.
- Manufacturing Process: AISI 4140 pipes can be produced by either hot finishing or cold finishing. The pipes are typically cast in ingots or strand cast, and after hot working, they may be cold finished. A protective oil coating is applied to retard dust accumulation during the forming process.
AISI 4140 Pipe Standard Specifications
| Specification | Details |
|---|---|
| Standard | AISI 4140, ASTM A519 (with IBR Test Certificate) |
| Size | 1/2” NB to 36” NB |
| Thickness | 3-12 mm |
| Schedules | SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules |
| Origin | European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material) |
| Tolerance | Cold drawn pipe: +/-0.1mm; Cold rolled pipe: +/-0.05mm |
| Craft | Cold rolled and Cold drawn |
| Type | Seamless / ERW / Welded / Fabricated |
| Forms Available | Round, Square, Rectangular, Hydraulic, etc. |
| Length | Standard, Double, and Cut length |
| End Types | Plain End, Beveled End, Treaded |
| Specialization | Large Diameter AISI 4140 Pipe |
| Additional Testing | NACE MR 0175, NACE TM0177, NACE TM0284, HIC TEST, SSC TEST, H2 SERVICE, IBR, etc. |
| Application | Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service |
Different Types of AISI 4140 Steel Pipe
As a government-recognized exporter of 4140 alloy steel seamless and welded pipes, we offer various forms of AISI 4140:
- AISI 4140 Chrome Steel 30CrMo Alloy Steel Pipes
- AISI 4140 Hot Rolled Seamless Steel Pipe
- AISI 4140 Alloy Steel Seamless Pipe
- AISI 4140 Carbon Steel Pipes
- AISI 4140 42CrMo4 Alloy Steel Pipe
- ASTM Cold Drawn 4140 Alloy Seamless Steel Pipe
Chemical Structure of AISI 4140 Seamless Pipe
| Element | Content (%) |
|---|---|
| Iron (Fe) | 96.785 – 97.77 |
| Chromium (Cr) | 0.80 – 1.10 |
| Manganese (Mn) | 0.75 – 1.0 |
| Carbon (C) | 0.380 – 0.430 |
| Silicon (Si) | 0.15 – 0.30 |
| Molybdenum (Mo) | 0.15 – 0.25 |
| Sulfur (S) | ≤ 0.040 |
| Phosphorus (P) | ≤ 0.035 |
AISI 4140 Tool Steel Pipe Mechanical Behavior
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm³ | 0.284 lb/in³ |
| Melting Point | 1416°C | 2580°F |
Testing & Quality Inspection of AISI 4140 Pipe
As an ISO-certified manufacturer of 4140 Chrome Moly Steel Boiler Tubing in India, we adhere to stringent testing and quality inspection standards to ensure our products meet the highest industry requirements.
