JIS G4051 S45C Cold Rolled Seamless Carbon Steel Tube For Machine Structural Use
JIS G4051 S45C Cold Rolled Seamless Carbon Steel Tube For Machine Structural Use
Material
The JIS G4051 S45C Cold Rolled Seamless Carbon Steel Tube is manufactured using high-quality carbon steel. This material is commonly used for machine structural purposes due to its excellent strength and durability.
Specification
| Specification | Details |
|---|---|
| Standard | JIS G4051 |
| Grade | S45C |
| Manufacturing Method | Cold Rolling |
| Outer Diameter | As per customer requirement |
| Wall Thickness | As per customer requirement |
| Length | As per customer requirement |
| Surface Finish | Smooth |
| Ends | Plain or beveled |
Key Features
- High strength and toughness.
- Excellent machinability.
- Good weldability.
- Resistant to deformation and cracking.
- Durable and reliable performance.
- Smooth surface finish.
Chemical Composition
The chemical composition of the JIS G4051 S45C Cold Rolled Seamless Carbon Steel Tube is as follows:
| Element | Percentage Composition |
|---|---|
| Carbon (C) | 0.42 - 0.48% |
| Silicon (Si) | 0.15 - 0.35% |
| Manganese (Mn) | 0.60 - 0.90% |
| Phosphorus (P) | 0.030% Max |
| Sulfur (S) | 0.035% Max |
Mechanical Properties
The mechanical properties of the JIS G4051 S45C Cold Rolled Seamless Carbon Steel Tube are as follows:
| Property | Value |
|---|---|
| Tensile Strength | 690 MPa Min. |
| Yield Strength | 490 MPa Min. |
| Elongation | 14% Min. |
| Hardness (HB) | 201-269 |
Steel Grade
The S45C steel grade is a widely used medium carbon steel with good strength and toughness. It is suitable for various machine structural applications, providing reliable performance and durability.
Application
The JIS G4051 S45C Cold Rolled Seamless Carbon Steel Tube is commonly used in the following applications:
- Machine components and parts
- Shafts and gears
- Axles and spindles
- Piston rods
- Hydraulic cylinders
- Structural frameworks
Possible Alternative Grades
Alternative grades that can be considered as substitutes for JIS G4051 S45C Cold Rolled Seamless Carbon Steel Tube include:
- ASTM A519 1045
- DIN 1.0503 C45
- BS 970 080M46
- EN 10083-2 C45E
- GB/T 699 45
These alternative grades provide similar chemical composition and mechanical properties, making them suitable alternatives for specific applications or compatibility with existing manufacturing processes.


Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
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.
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