AISI 4140 Seamless Tubing: Medium Carbon Alloy Steel Seamless Pipe
Overview
AISI 4140 seamless tubing is praised for its incredible strength, durability, and versatility. As a medium carbon alloy steel, it is designed to handle high-load applications, making it a preferred choice in industries ranging from automotive to oil and gas. Below is an in-depth look at its material specifications, key features, and relevant applications.
Material Specification
AISI 4140 is a chromium-molybdenum alloy steel featuring good hardness, strength, and wear resistance. It combines a balance of toughness with superior mechanical properties, making it suitable for a variety of demanding mechanical applications.
Key Features
- High Strength and Toughness: Offers excellent tensile strength and toughness, even at elevated temperatures.
- Wear Resistance: The chemistry balance enhances wear resistance, essential for prolonged exposure to mechanical stress.
- Versatility: Suitable for a wide range of applications such as shafts, gears, and components subjected to stress.
- Heat Treatability: Features good response to heat treatment, allowing for significant hardening.
- Corrosion Resistance: While not stainless, its chromium content provides some resistance to moisture and corrosion.
Chemical Composition
| Element | Composition (%) |
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.75 - 1.00 |
| Silicon (Si) | 0.15 - 0.30 |
| Chromium (Cr) | 0.80 - 1.10 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
Mechanical Properties
| Property | Value |
| Tensile Strength | 950 MPa (approximate) |
| Yield Strength | 620 MPa (approximate) |
| Elongation (% in 50mm) | ≥ 20% |
| Reduction of Area | ≥ 55% |
| Hardness (Brinell) | 197 - 255 HB |
Similar Standards and Steel Grades
- ASTM: ASTM A29, ASTM A519
- EN: EN 10083-3, 42CrMo4
- GOST: 40X
- JIS: SCM440
- GB: 42CrMo
Applications
AISI 4140 seamless tubing is utilized in diverse applications, particularly in industries valuing the characteristics of an alloy boasting both strength and toughness:
- Automotive Industry: Used in the production of crankshafts, steering knuckles, and axles.
- Oil and Gas: Essential for drill collars, tool joints, and wellhead components due to its strength and wear resistance.
- Industrial Machinery: Components like gears and heavy-duty shafts benefit from its mechanical properties.
- Tool Manufacturing: Apt for making dies and molds requiring sturdiness and dependability.
TORICH Group, an one-stop service provider of raw materials engaged in raw material production, R&D and
trade, has 30+ years of experience in the market, exported to 56 +countries, and won good reputation and
credibility among domestic and foreign customers.
The company's production plant covers an area of over 10,000 square meters, with an annual production
capacity of 50,000 tons of materials and a comprehensive trading and warehousing capacity of 100,000 tons, which can satisfy customers' personalized needs for raw materials in terms of diversity and timeliness.
The group holds shares in more than ten domestic production entities, whose main products include
seamless steel pipes ( carbon steel and stainless steel), welded pipes ( carbon steel and stainless steel), pipe fittings ( carbon steel and stainless steel), titanium (titanium tubes, titanium rods, titanium cakes, titanium plates, etc.), aluminum (aluminum tubes, aluminum rods, aluminum die casting, aluminum casting, CNC machining), and CNC deep processing of metal materials such as tubes, rods, and casting parts.
Over the past 30 years, the company has been gradually developing new technologies and materials to meet
the growing needs of customers and various diversified needs, exporting to more than 56 countries and still
increasing the number of exporting countries, aiming to help customers to solve the demand for raw materials, and to facilitate one-stop purchasing for customers.
Q: Are you trading company or manufacturer ?
A: manufacturer,also can do trading.
Q: How long is your delivery time?
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
Q: Do you provide samples? is it free or extra ?
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
