Premium 40C8 Carbon Steel Manufacturers & Suppliers in Mumbai
Titan Steel is a trusted Expert 40C8 Carbon Steel Manufacturer and Supplier in Mumbai, offering premium-quality steel products for engineering, automotive, fabrication, and industrial applications. Our 40C8 Carbon Steel Round Bars are manufactured using high-grade raw materials and advanced production processes to ensure consistent quality, excellent strength, and reliable performance.
Available in a wide range of standard and customised sizes, our 40C8 Carbon Steel products are designed to meet the requirements of machine manufacturers, fabricators, and engineering companies. We are committed to delivering quality materials, competitive pricing, and timely supply to customers across India.
About 40C8 Carbon Steel
It is because of the exact chemical composition of 40C8 that the metal has definite mechanical properties, which makes it possible for it to be used in many industries. The elements contained in the metal such as manganese and silicon make the metal tough and strong. 40C8 is a grade of medium carbon steel that has the best combination of strength and machinability.
This type of grade of 40C8 is popular among manufacturers because of its high mechanical strength and processability.
The carefully controlled chemical composition of 40C8 contributes to its dependable mechanical properties and makes it suitable for a variety of industrial applications. Elements such as manganese and silicon help improve the steel’s strength, toughness, and overall durability, while maintaining good machinability for precision manufacturing.
Applications of 40C8 Carbon Steel:
The 40C8 carbon steel is among the widely used materials in industrial engineering applications requiring materials with predictable properties. The well-blended qualities of 40C8 carbon steel make it useful for making parts under constant wear and extreme working conditions.
Companies searching for materials with good machinability, good strength, and long service life in their products usually opt for 40C8 carbon steel.
40C8 Carbon Steel is among the most preferred materials by companies seeking a material with good machinability,
- General Purpose Axles
- Shafts
- Gears
- Bolts and Studs
- Spindles
- Automotive and General Engineering Components
- General Engineering Parts
40C8 Equivalent Grades:
| Classification | IS | EN | DIN | AISI/SAE | JIS |
|---|---|---|---|---|---|
| Medium Carbon Steel | 30C8, 35C8, 40C8, 45C8, 50C8, 55C8, CL-III, CL-IV, CL-V | EN-8, EN-8D, EN-9 | CK-30, CK-35, CK-40, CK-45, CK-50, CK-55, CK-60 | 1030, 1035, 1040, 1045, 1050, 1055, 1060 | – |
40C8 Chemical Composition:
| Element | Content (%) |
|---|---|
| C | 0.35 – 0.45 |
| Mn | 0.60 – 0.90 |
| Si | 0.10 – 0.35 |
| S | 0.35 Max |
| P | 0.35 Max |
40C8 Mechanical Properties:
| Property | Metric | Imperial |
|---|---|---|
| Tensile Strength (Ultimate) | 660 MPa | 95,700 psi |
| Tensile Strength (Yield) | 560 MPa | 81,200 psi |
| Bulk Modulus | 140 GPa | 20,300 ksi |
| Shear Modulus | 80 GPa | 11,600 ksi |
| Elastic Modulus | 190 – 210 GPa | 27,557 – 30,458 ksi |
| Poisson’s Ratio | 0.27 – 0.30 | 0.27 – 0.30 |
| Elongation at Break (in 50 mm) | 0.1 | 0.1 |
| Reduction of Area | 0.4 | 0.4 |
| Hardness (Brinell) | 197 | 197 |
| Hardness (Knoop) | 219 | 219 |
| Hardness (Rockwell B) | 92 | 92 |
| Hardness (Rockwell C) | 13 | 13 |
| Hardness (Vickers) | 207 | 207 |
| Machinability | 55 (based on AISI 1212) | 55 |
Hardness
40C8 Carbon Steel offers good hardness and wear resistance, making it suitable for engineering components that operate under moderate to heavy mechanical loads. The material typically has a Brinell Hardness of approximately 197 HB in its standard condition, providing a good balance between strength and machinability.
Heat Treatment
The mechanical properties of 40C8 Carbon Steel can be enhanced through appropriate heat treatment processes. The selected treatment depends on the component’s size, application, and required performance. Proper heat treatment helps improve strength, toughness, and overall service life.
Hardening
Hardening is carried out by heating the material to the recommended hardening temperature, followed by rapid cooling using a suitable quenching medium. This process increases the surface hardness and wear resistance, making the steel suitable for demanding industrial applications.
Tempering
After hardening, tempering is performed to reduce internal stresses and improve toughness. A tempering temperature between 550°C and 660°C helps achieve a balanced combination of hardness, strength, and durability while reducing the risk of brittleness.
Forging Properties
40C8 Carbon Steel possesses good forging characteristics when processed under controlled temperatures. The material is generally preheated before forging and worked at temperatures of around 1050°C. Forging should not be continued below 850°C, and controlled cooling after forging is recommended to maintain the desired mechanical properties and minimize internal stresses.
Stress Relieving
Stress relieving is carried out to reduce internal stresses that may develop during machining, forming, or fabrication. For 40C8 Carbon Steel, the material is typically heated between 680°C and 700°C, held at the required temperature for uniform heating, and then allowed to cool naturally in still air. This process helps improve dimensional stability and minimizes the risk of distortion during further processing.
Normalizing
Normalizing is performed by heating the steel to approximately 830°C to 860°C, followed by controlled air cooling. This treatment refines the grain structure, enhances toughness, and provides more uniform mechanical properties throughout the material.
Annealing
To improve machinability and reduce material hardness, 40C8 Carbon Steel is generally annealed within a temperature range of 680°C to 710°C. Slow cooling after annealing helps relieve internal stresses and prepares the material for machining and fabrication operations.
Density
40C8 Carbon Steel has an approximate density of 7.85 g/cm³, making it suitable for a wide variety of structural, engineering, and industrial applications where strength and durability are important.
Machinability
40C8 Carbon Steel offers good machining characteristics, particularly in the annealed condition. It can be efficiently turned, drilled, milled, and machined to produce precision-engineered components with excellent dimensional accuracy.
Welding
40C8 Carbon Steel can be welded using commonly accepted welding methods when appropriate procedures are followed. Depending on the application and component thickness, preheating or post-weld heat treatment may be recommended to maintain the desired mechanical properties and minimize residual stresses.
40C8 Physical Properties:
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm³ | 0.284 lb/in³ |
40C8 Thermal Properties:
| Property | Metric | Imperial |
|---|---|---|
| Thermal Expansion Coefficient | 11 µm/m°C | 6.11 µin/in°F |
| Thermal Conductivity | 49.8 W/mK | 346 BTU in/hr.ft².°F |
Supply Cities
- Mumbai
- Ahmedabad
- Amaravathi
- Ambattur
- Bangalore
- Belgaum
- Chennai
- Chittoor
- Coimbatore
- Dindigul
- Mysore
- Nellore
- Hyderabad
- Kochi
- Mangalore
- Tirupur
- Tuticorin
- Madurai
- Andhra Pradesh
- Karnataka
- Puducherry
- Kerala
- Tamil Nadu
- Telangana
- Visakhapatnam
- Kochi
- Kerala
- Hubli-Dharwad
- Karnataka
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Titan Steel & Engineers Related Products:
Carbon Steel, Alloy Steel, Bright Steel, Spring Steel, Die Steel & Tool Steel, Special Alloy Steel
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