Special Steel 42CrMo/1.7225 Working Mould Steel

Special Steel 42CrMo/1.7225 Working Mould Steel

Ref Price:: $300.00 - 500.00 / m.t.

Loading Port:: China main port

Payment Terms:: TT or LC

Min Order Qty:: 25 m.t.

Supply Capability:: 10000 m.t./month

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The details of our Steel

1. Produce Standard: as the GB, AISI, ASTM, SAE, EN, BS, DIN, JIS Industry Standard

2. Produce processes: Smelt Iron -EAF smelt Billet - ESR smelt Billet -Hot rolled or forged get the steel round bar and plate

3. Heat treatment:

Normalized / Annealed / Quenched+Tempered

4. Quality assurance:

All order we can received Third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.

Product information

Chemical Composition(%)

C	Si	Mn	Cr	Mo	Ni	P	S
0.38-0.45	0.17-0.37	0.50-0.80	0.90-1.20	0.15-0.25	≤0.030	≤0.030	≤0.030

Standard

GB	AISI	DIN	JIS	ISO
42CrMo	4140	42CrMo4	SCM440	42CrMo4

Available Size

Rolled round bar	φ20-120mm × L
Forged round bar	φ130-195mm × L

Heat Treatment

Item	Temperature℃	Hardness
quenching	840-880	HRC32-34
tempering	580	HRC32-34
quenching	900	HRC54-60
tempering	150-180	HRC54-60

Applications: The steel is suitable for manufacturing requires a certain strength and toughness of large and medium-sized plastic mold

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Special Steel 42CrMo/1.7225 Working Mould Steel

Q: How is special steel tested for quality and durability?: Special steel is tested for quality and durability through a series of rigorous tests and inspections. These tests typically include measuring mechanical properties such as tensile strength, hardness, and impact resistance. Additionally, non-destructive testing methods like ultrasonic and magnetic particle inspections are used to detect any internal defects or inconsistencies. Quality and durability are ensured by adhering to strict industry standards and specifications, and only steel that meets the required criteria is deemed suitable for use.

Q: What are the factors that determine the cost of special steel?: The cost of special steel is determined by several factors, including the type and grade of steel, the manufacturing process involved, the quantity and availability of raw materials, market demand and competition, transportation and logistics costs, and any additional customization or special specifications required by the customer.

Q: What are the applications of special steel in the railway industry?: Special steel has a wide range of applications in the railway industry. It is commonly used in the manufacturing of rails, which need to be durable and able to withstand heavy loads and constant wear and tear. Special steel is also used in the construction of railway bridges and tunnels, as it offers high strength and resistance to corrosion. Additionally, special steel is used in the production of various railway components such as wheels, axles, and couplers, ensuring safety and reliability in train operation.

Q: How does special steel contribute to the power generation aftermarket industry?: The power generation aftermarket industry relies heavily on special steel, which is essential for constructing and maintaining power generation equipment. Special steels, such as stainless steel and alloy steel, possess unique characteristics that make them perfectly suited for the demanding conditions of the power generation sector. One of the key advantages of special steel in the power generation aftermarket industry is its exceptional resistance to corrosion and oxidation. Power generation equipment, such as gas turbines and steam generators, operate in harsh environments with extreme temperatures, pressure, and exposure to various chemical elements. Special steel's corrosion resistance ensures that the equipment can withstand these challenging conditions, minimizing the risk of failure and extending the lifespan of the equipment. Furthermore, special steel provides excellent strength and toughness, enabling power generation equipment to withstand high mechanical stress and fatigue. Turbines, boilers, and other heavy machinery in the power generation industry undergo continuous operation and significant loads. Special steel's high strength and durability allow these components to endure these demanding conditions, ensuring safe and reliable operation. Special steel also maintains dimensional stability under extreme temperatures, which is crucial for power generation equipment. As power generation equipment often operates at high temperatures, special steel's thermal stability prevents distortion and deformation, ensuring that the equipment retains its shape and functionality over time. Additionally, special steel's versatility enables the production of customized components and parts that meet the specific requirements of power generation equipment. Whether it is turbine blades, boiler tubes, or heat exchangers, special steel can be tailored to provide the desired mechanical properties, corrosion resistance, and thermal stability required for each application. Overall, special steel is an indispensable material in the power generation aftermarket industry. Its corrosion resistance, strength, toughness, thermal stability, and versatility make it an ideal choice for constructing and maintaining power generation equipment. By providing reliable and durable materials, special steel contributes to the efficiency, safety, and longevity of power generation systems, ensuring the continuous supply of electricity to meet the growing demands of our modern world.

Q: Can special steel be used in the medical device manufacturing industry?: Yes, special steel can be used in the medical device manufacturing industry. Special steel alloys, such as stainless steel, are commonly used in the production of medical devices due to their excellent corrosion resistance, biocompatibility, and mechanical properties. These materials provide durability, sterilization compatibility, and are suitable for various medical applications, including implants, surgical instruments, and diagnostic equipment.

Q: What are the different methods for improving the fatigue strength of special steel?: There are various ways to enhance the fatigue strength of special steel: 1. Heat treatment is a commonly used approach, involving processes like annealing, quenching, and tempering. These treatments refine the steel's microstructure, reduce impurities, and boost fatigue resistance. 2. Surface treatments, such as shot peening and nitriding, can also enhance fatigue strength. Shot peening bombards the steel surface with small metal particles, inducing compression stress that prevents crack formation and propagation. Nitriding diffuses nitrogen into the surface layer, creating a hard and wear-resistant nitride layer that improves fatigue resistance. 3. Alloying special steel with specific elements, like chromium, molybdenum, or vanadium, can significantly improve fatigue strength. These elements form carbides or nitrides, acting as barriers against crack propagation. 4. Applying protective surface coatings, like electroplating, hot-dip galvanizing, or physical vapor deposition (PVD), can enhance fatigue strength. These coatings act as barriers against environmental factors that may cause corrosion or surface damage, ultimately extending the steel's fatigue life. 5. Grain refinement can be achieved through processes like severe plastic deformation or equal channel angular pressing (ECAP). By refining the grain size, the steel's fatigue strength can be improved, as fine-grained steels have higher resistance to crack initiation and propagation. 6. Residual stress management plays a crucial role in enhancing fatigue strength. Techniques like stress relieving or shot peening can reduce tensile residual stresses, which are detrimental to fatigue resistance. It's important to consider specific requirements, the type of special steel, and the intended application when selecting the most suitable method for improving fatigue strength.

Q: How does special steel contribute to the mining industry?: Special steel plays a crucial role in the mining industry by providing the necessary strength, durability, and resistance to extreme conditions required for various mining equipment and machinery. It is used in the manufacturing of drill bits, excavator buckets, conveyor systems, crushers, and other mining tools. Special steel's exceptional properties allow for increased efficiency, reduced downtime, and improved safety in mining operations, ultimately contributing to enhanced productivity and profitability in the industry.

Q: What are the requirements for special steel used in surgical instruments?: Meeting the stringent requirements for special steel used in surgical instruments is crucial due to their critical role in medical procedures. Above all else, the steel must exhibit exceptional corrosion resistance to endure repeated exposure to body fluids and sterilization chemicals. This guarantees that the instruments remain durable, hygienic, and safe for use. Another indispensable requirement is high strength and hardness, enabling surgical instruments to withstand the forces exerted during procedures without bending, breaking, or losing sharpness. Moreover, the steel should possess outstanding wear resistance, maintaining its cutting edge for an extended period and minimizing the need for frequent sharpening or replacement. Biocompatibility is also a pivotal factor for surgical instruments. The steel must not elicit adverse reactions when in contact with living tissue or fluids, thus reducing the risk of infection or complications for patients. This necessitates the absence of harmful elements or impurities that could trigger allergic responses or toxicity. Furthermore, the steel used in surgical instruments must be highly sterilizable. It should withstand high temperatures during autoclaving or other sterilization methods without significant alterations to its physical or mechanical properties. Lastly, the steel should be easily workable, facilitating precision manufacturing processes like forging, machining, and polishing to create intricate instrument designs. This guarantees that surgical instruments possess the necessary shape, size, and surface finish to effectively perform specific tasks. Overall, the requirements for special steel used in surgical instruments encompass corrosion resistance, strength, hardness, wear resistance, biocompatibility, sterilizability, and workability to ensure the instruments meet the exacting standards of the medical field.

Q: How is special steel graded?: Special steel is graded based on various factors such as chemical composition, mechanical properties, and the intended application. It typically involves assessing the steel's alloying elements, heat treatment processes, and quality control measures to determine its grade and suitability for specific industrial purposes.

Q: What are the main factors that determine the cost of special steel?: The cost of special steel is primarily influenced by various key factors. Firstly, the composition of the steel plays a crucial role in determining its cost. Special steels often contain specific alloying elements that enhance their properties, such as corrosion resistance, strength, or heat resistance. The cost of these alloying elements can vary considerably, and the higher the quantity and complexity of the alloy, the greater the cost of the steel. Secondly, the manufacturing process employed to produce the special steel can significantly impact its cost. Special steels typically require more intricate and controlled manufacturing processes compared to regular steel. These processes may involve additional steps like precise heat treatment, forging, or casting, which can raise the overall cost of the steel. Another essential factor that affects the cost of special steel is the market demand and availability. If a particular type of special steel is in high demand but limited supply, its cost tends to increase. Conversely, if there is an excess of a specific type of special steel, its cost may decrease. Market forces, including global supply and demand dynamics, can have a substantial impact on the cost of special steel. Furthermore, the quality and certification of the special steel can also influence its cost. Higher-quality steel that meets stringent industry standards and certifications often commands a higher price due to the additional testing, quality control, and documentation required. Transportation and logistics costs are also significant factors to consider. If the steel needs to be transported over long distances or requires specialized handling, it can contribute to the overall cost. Lastly, economic factors like currency exchange rates, inflation, and government policies can impact the cost of special steel. Fluctuations in exchange rates can affect the cost of raw materials and manufacturing equipment, which, in turn, influence the final price of the steel. Government policies, such as import and export tariffs or subsidies, can also have an impact on the cost of special steel. In conclusion, the cost of special steel is determined by various factors, including composition, manufacturing process, market demand and availability, quality and certification, transportation and logistics, and economic factors. Understanding these factors is crucial for both buyers and sellers of special steel in order to make informed decisions and ensure competitive pricing.

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