Product Details
The 42CrMo4 alloy round bar is a high-quality steel product manufactured through hot rolling and natural cooling processes. It is composed of low-carbon and ordinary alloy steel that are subjected to intense heat and pressure. The primary purpose of this round bar is to reinforce concrete structures, including prestressed concrete. Its versatility allows it to be easily cut and transformed into a variety of replacement parts that can be tailored to fit specific requirements. With our wholesale pricing, we can provide you with large quantities of this product to meet all of your needs. Don't hesitate to reach out if you're interested in learning more!
| Product Name |
42CrMo4 Alloy Round Bar |
Steel Grade |
As customer requirements |
Standard |
AISI, ASTM, BS, DIN, GB, JIS |
Material |
20#-55#, T8-T10, 16Mn-50Mn, 30Mn2-50Mn2 etc. |
Diameter |
80 to 800 mm |
Length |
Customized size |
Surface |
Bright peeled or black |
Technique |
Forged/Hot rolled/Cold drawn |
Application |
Power plants, chemicals, petroleum, and other industries rely heavily on the use of structural steel bars. These high-strength bars are essential for constructing the durable and reliable structures needed to support the equipment and machinery used in these facilities. The unique properties of structural steel make it an ideal choice for these applications, as it is able to withstand the high stress and extreme conditions commonly encountered in these environments. Whether used in the construction of power plant turbines or petrochemical storage tanks, structural steel bars provide the strength and durability required to ensure safe and efficient operation. |
Special Use |
Free Cutting Steel |
Certificate |
ISO 14001/28001 |
OEM Service |
Yes |
The chemical composition and mechanical properties of a material in its quenched and tempered state are important parameters to consider when assessing its suitability for specific applications. The chemical composition refers to the elemental makeup of the material, while the mechanical properties relate to its ability to withstand stress and deformation.
In the quenched state, the material is rapidly cooled from a high temperature, resulting in a hard and brittle structure. However, by tempering the material at a relatively low temperature, its hardness is reduced while its toughness is improved. This process involves reheating the material and then cooling it slowly, allowing the microstructure to relax and the material to become more ductile.
The mechanical properties of a quenched and tempered material depend on several factors, including its chemical composition, the quenching and tempering parameters, and the cooling rate. Typically, a material in this state will exhibit higher strength and hardness, but lower ductility and toughness compared to an annealed or normalized material.
Overall, the chemical composition and mechanical properties of a quenched and tempered material play a critical role in determining its suitability for specific applications, such as in the manufacturing of tools, structural components, and automotive parts. Hence, it is essential to carefully consider these factors when selecting materials for high-performance applications.
| Material |
42CrMo4 |
Chemical Composition |
In the quenched and tempered state, the mechanical properties of a material undergo significant changes. This state refers to the process of rapidly cooling the material after heating it to a high temperature and then reheating it to a tempering temperature.
During the quenching process, the material becomes extremely hard and brittle. This is due to the formation of a martensitic microstructure, which consists of a high concentration of carbon atoms. As a result, the material exhibits a high level of strength and hardness but low toughness. It becomes difficult to deform or shape the material without causing it to fracture.
However, the material's properties are improved during the tempering phase. Tempering involves reheating the material to a specific temperature and allowing it to cool slowly. This process relieves internal stresses and reduces the brittleness induced by quenching. The result is a material with increased toughness and ductility, although it may sacrifice some of its hardness and strength.
In terms of specific mechanical properties, the quenched and tempered state often yields high tensile strength, making it suitable for applications where the material needs to withstand heavy loads. The hardness of the material is also significantly increased, which can provide resistance to wear and abrasion.
Furthermore, the combination of strength and toughness in the quenched and tempered state allows the material to absorb energy without fracturing. This property is particularly advantageous in industries such as automotive and construction, where components may experience sudden impacts or vibrations.
In summary, the mechanical properties of a material in the quenched and tempered state exhibit a balance between strength, hardness, toughness, and ductility. The transformative process of quenching and tempering refines the material's microstructure, resulting in improved performance and versatility for various applications. |
C |
0.38-0.45 |
Tensile strength(MPA) |
≥1080 |
Si |
0.17-0.37 |
Yield strength (MPA) |
≥930 |
Mn |
0.50-0.80 |
Elongation(δ5/%) |
12 |
Cr |
0.90-1.20 |
Reduction in Area (ψ/%) |
45 |
Mo |
0.15-0.25 |
Impact (J) |
63 |
P |
≤0.035 |
Hardness
|
≤217HB
|
S |
≤0.035 |
Cu |
≤0.30 |
Ni |
≤0.30 |
Mingshang promise best quality, competitive price and professional service.
1. Free sample is available.
2. Mill test certificate is supplied with shipment.
3.The third party inspection is accepted.
1.Do you have your own factory?
A: Yes, we do. We have our own factory, and we can provide stable stock with competitive price and good quality.
2. Which payment can you accept?
A: 1). 100% irrevocable L/C at sight.
2). 40% T/T prepaid and the balance against the copy of B/L.
3). 40% T/T prepaid and the balance against L/C.
3. How about the delivery time?
A: 10-15 days after receiving the deposit.
4. Why do you choose our company?
A: 1). We have a more stable stock with competitive price and good quality.
2). We have more experience on the international trade with good faith.
3). We can provide the personal customized service, such as adding your company's logo on the products, the specified color and so on.
5. What is the application of the product?
A: Mainly used in the manufacture of various tools, cutting tools, molds and measuring tools
6. Can you send a sample for the inspection?
A: Yes, we can. We can send you the sample
7. Can you make the product according to our requirements?
A: Yes, we will strictly follow your requirements, such as the way of the package, the length of the product, the treatment of the product and so on.
8. What is your way of the surface treatment?
A: We can fat liquoring fro your round bar and another way which you requirement.
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