• Special Steel DIN 25CrMo4 Hot Rolled Steel Round Bars System 1
  • Special Steel DIN 25CrMo4 Hot Rolled Steel Round Bars System 2
  • Special Steel DIN 25CrMo4 Hot Rolled Steel Round Bars System 3
Special Steel DIN 25CrMo4 Hot Rolled Steel Round Bars

Special Steel DIN 25CrMo4 Hot Rolled Steel Round Bars

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Loading Port:
China main port
Payment Terms:
TT OR LC
Min Order Qty:
30 m.t.
Supply Capability:
10000 m.t./month

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Item specifice

Type:
Carbon Steel,Spring Steel,Bearing Steel,Gear Steel,Deformed Steel,Stainless Steel,Alloy Steel
Shape:
Steel Coil,Steel Sheet,Steel Wire Rod,Steel Flat Bar,Steel Square Bar,Steel Angle,Steel Round Bar,Steel Billets
Technique:
Hot Rolled,Cold Rolled,Cold Drawn,ERW,Forged,Saw,Extruded,EFW,Spring
Surface Treatment:
Galvanized,Coated,Copper Coated,Color Coated,Oiled,Dry,Chromed Passivation,Polished,Bright,Black,PVDF Coated
Certification:
UL,ISO,SGS,BV,IBR,RoHS,CE,API,BSI

Product Information

1 Standards and Chemical Composition:

GB

DIN

JIS

BS

20CrMo

25CrMo4

SCM420

25CrMo4

 

C

Si

Mn

P

S

Cr

Ni

Cu

0.17-0.23

0.15-0.35

0.55-0.90

0.030

0.030

0.85-1.25

0.30

0.30

2 Mechanical Property:

Yield Strength (MPa)

≥685

Tensile Strength (MPa)

≥885

Elongation (%)

≥12

Hardness (HB)

≤197

Reduction in Area (%)

≥50

AKV (J)

≥78

3 Brief Introduction:

Dimension

14-350mm

Length

2-13m or as per your request

Delivery condition

Hot rolled

Heat Treatment

Normalizing, Annealing, Quenching

Packing

Standard seaworthy packing or according to your requirements



Product Show

Special Steel DIN 25CrMo4 Hot Rolled Steel Round Bars


Workshop Show

Special Steel DIN 25CrMo4 Hot Rolled Steel Round Bars


Shipping 

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods!

Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

 

Payment Terms

1.Payment: T/T, L/C, Western Union, MoneyGram,PayPal; 30% deposits; 70% balance before delivery.

2.MOQ: 1pcs

3.Warranty : 3 years

4.Package Informations: 1) EXPORT, In 20 feet (GW 25 ton) or 40 feet Container (GW 25 ton)

                                       2)as customer's requirement


Why choose us? 

(1) The leading exporter in China special steel industry.       

(2) Large stocks for various sizes, fast delivery date.       

(3) Good business relationship with China famous factories.       

(4) More than 7 years steel exporting experience.       

(5) Good after-sales service guarantee. 


Q:What are the potential health hazards associated with working with special steel?
The potential health hazards associated with working with special steel include exposure to toxic fumes and dust, which can lead to respiratory problems such as asthma or lung damage. Skin contact with certain types of special steel may cause irritation or allergic reactions. Additionally, the physical nature of the work, such as heavy lifting or repetitive motions, can contribute to musculoskeletal disorders and injuries. Proper safety measures, such as wearing appropriate protective equipment and ensuring proper ventilation, are crucial in minimizing these health risks.
Q:How does stainless steel contribute to architectural design?
Stainless steel contributes to architectural design by providing a modern and sleek aesthetic, durability, and versatility. It can be used for various architectural elements such as cladding, roofing, handrails, and structural components. Its corrosion resistance and ability to withstand harsh environmental conditions make it a popular choice for both interior and exterior applications. Additionally, stainless steel can be easily fabricated into different shapes and sizes, allowing architects to create unique and innovative designs that enhance the overall appearance of buildings.
Q:What are the properties of weathering steel?
Weathering steel, also known as corten steel, possesses several distinctive properties. It exhibits high resistance to corrosion, making it suitable for outdoor structures without the need for protective coatings. Its unique composition allows for the formation of a stable rust-like appearance, providing an aesthetically pleasing and natural finish. Moreover, weathering steel has excellent strength and durability, making it ideal for various applications, including bridges, buildings, and architectural elements.
Q:How does special steel perform in tooling applications?
Due to its unique properties and characteristics, special steel excels in tooling applications. Also known as tool steel, this type of steel is specifically designed and manufactured to endure the challenging conditions of tooling applications. One major advantage of special steel is its exceptional hardness. Tooling applications often involve cutting, shaping, and forming tough materials, and the hardness of special steel enables it to withstand the extreme pressures and forces involved in these processes effectively. Additionally, this hardness helps maintain the cutting edges' sharpness for extended periods, ensuring consistent and precise performance. Moreover, special steel demonstrates excellent resistance to wear. Tooling applications typically involve repetitive and abrasive actions, which can cause significant wear and tear on the tools. However, the wear resistance of special steel ensures that the tools maintain their performance and longevity, reducing the need for frequent replacements and downtime. Another crucial aspect of special steel is its remarkable toughness. Tooling applications often subject the tools to sudden impacts and shock loads. Special steel's toughness allows it to absorb these impacts without fracturing or breaking, making it highly reliable and durable in such applications. In addition, special steel offers good heat resistance and dimensional stability. Tooling applications frequently involve high temperatures, and special steel's ability to withstand heat prevents it from losing its hardness and other mechanical properties. This ensures consistent performance and dimensional stability, resulting in accurate and precise tooling. Lastly, special steel is also recognized for its corrosion resistance. Tooling applications may expose the tools to moisture, chemicals, or harsh environments, which can lead to corrosion and degradation. The corrosion resistance of special steel protects the tools from these corrosive elements, prolonging their lifespan and maintaining their performance. To conclude, special steel's hardness, wear resistance, toughness, heat resistance, dimensional stability, and corrosion resistance make it highly effective in tooling applications. These properties enable special steel tools to withstand the demanding conditions of tooling applications, ensuring reliable and long-lasting performance.
Q:What are the different chemical resistance grades of special steel?
Special steels, commonly known as stainless steels, possess exceptional resistance to corrosion and chemical attack. They are a category of alloys that contain a substantial amount of chromium, which forms a protective oxide layer on the surface, preventing further corrosion. The chemical resistance of special steel may vary depending on the particular grade or alloy composition. Below are some of the typical chemical resistance grades of special steel: 1. Austenitic Stainless Steel: This is the most prevalent stainless steel type and exhibits excellent resistance to a broad range of chemicals, including organic acids, alkalis, and salts. The most commonly used grade in this category is 304 stainless steel. 2. Ferritic Stainless Steel: Ferritic stainless steels have lower corrosion resistance compared to austenitic grades but still offer good resistance to many chemicals. They are particularly resistant to nitric acid and some organic acids. Grade 430 stainless steel serves as a common example of ferritic stainless steel. 3. Martensitic Stainless Steel: Martensitic stainless steels are recognized for their high strength and hardness. Although they have lower corrosion resistance compared to austenitic and ferritic grades, they can still exhibit good resistance to certain chemicals, especially in mildly corrosive environments. 4. Duplex Stainless Steel: This type of stainless steel combines the properties of both austenitic and ferritic grades, resulting in enhanced strength and improved resistance to stress corrosion cracking. Duplex stainless steels offer excellent resistance to a wide range of chemicals, including organic acids, chloride-containing solutions, and saltwater. 5. Precipitation-Hardening Stainless Steel: These steels can undergo heat treatment to achieve high strength and corrosion resistance. They typically exhibit resistance to a broad range of chemicals, including organic acids, alkalis, and some organic solvents. It is crucial to note that the chemical resistance of any steel grade can also be affected by factors such as temperature, chemical concentration, and the presence of other corrosive agents. Therefore, it is advisable to consult the manufacturer's specifications or seek expert advice when selecting a special steel grade for specific chemical resistance requirements.
Q:Can special steel be used for making marine components?
Yes, special steel can be used for making marine components. Special steel, also known as marine grade steel, is specifically designed to withstand the harsh conditions of marine environments. These environments are exposed to corrosion, high humidity, and saltwater, which can cause regular steel to deteriorate quickly. Marine grade steel is typically made with added alloys, such as nickel, chromium, and molybdenum, which provide excellent corrosion resistance and durability. These alloys help the steel resist the corrosive effects of saltwater and prevent rusting. Additionally, special steel is often coated with protective coatings or treated to further enhance its resistance to corrosion. Marine components made from special steel include ship hulls, propellers, shafts, valves, pipelines, and various structural elements. The use of special steel ensures the longevity and reliability of these components in demanding marine conditions. Furthermore, the strength and toughness of special steel make it suitable for withstanding the high mechanical stresses and impacts experienced at sea. In summary, special steel is an ideal material for making marine components due to its superior corrosion resistance, durability, and strength. It helps to ensure the longevity and reliability of marine structures and equipment in harsh marine environments.
Q:How is duplex stainless steel used in the oil and gas industry?
Duplex stainless steel is extensively used in the oil and gas industry due to its exceptional properties. It is commonly employed in the construction of pipelines, offshore platforms, and various equipment. Its high corrosion resistance allows for reliable performance in aggressive environments, such as offshore drilling rigs and subsea equipment. Additionally, its high strength and toughness make it suitable for handling high-pressure and high-temperature conditions. Overall, duplex stainless steel plays a crucial role in ensuring the safety, efficiency, and longevity of oil and gas operations.
Q:How does special steel perform under high temperatures?
Special steel is specifically designed to perform exceptionally well under high temperatures. It exhibits excellent strength, hardness, and resistance to deformation, even when exposed to extreme heat. Additionally, special steel demonstrates remarkable resistance to oxidation and corrosion, making it highly suitable for applications that involve high temperatures, such as in the aerospace, automotive, and power generation industries.
Q:How does case-hardening steel achieve high surface hardness?
Case-hardening steel achieves high surface hardness through a process called carburizing or nitriding, where the steel is heated in the presence of carbon or nitrogen-rich substances. This allows carbon or nitrogen atoms to diffuse into the surface of the steel, creating a hardened outer layer while maintaining a tough and ductile core.
Q:How does special steel contribute to the mining machinery industry?
The mining machinery industry relies heavily on special steel, which provides exceptional strength, durability, and resistance to wear and corrosion. This specific type of steel is engineered to withstand the harsh conditions typically encountered in mining operations. In the mining machinery industry, equipment such as drills, excavators, loaders, crushers, and conveyor systems face extreme stress, heavy loads, and abrasive materials. Various parts of these machines, including buckets, tracks, cutting edges, gears, and hydraulic components, incorporate special steel components. The high strength and toughness of special steel ensure that mining machinery can endure the immense forces and impacts involved in mineral excavation, hauling, and processing. This durability extends the lifespan of the equipment, reducing the need for frequent replacements and minimizing downtime, resulting in cost savings for mining companies. Special steel's resistance to wear and corrosion is crucial in the mining industry. The presence of abrasive materials and corrosive substances in the mining environment can cause rapid deterioration of machinery components. However, special steel alloys are designed to resist wear and corrosion, enhancing the longevity and performance of mining machinery. Additionally, special steel allows mining machinery to operate efficiently and effectively. Its high strength-to-weight ratio allows for the construction of lightweight yet robust equipment, improving mobility and productivity in mining operations. The use of special steel also enables the design of complex components with intricate shapes, ensuring optimal functionality and performance. Overall, special steel is an essential material in the mining machinery industry. Its exceptional strength, durability, resistance to wear and corrosion, and ability to enhance efficiency make it a vital component in the design and construction of mining equipment. By incorporating special steel, mining machinery can withstand the challenging conditions and heavy-duty tasks involved in mining operations, ultimately contributing to increased productivity, reduced costs, and improved safety in the industry.

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