Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw

Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw System 1

Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw System 2

Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw System 3

Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw System 4

Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw

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Loading Port:: Tianjin

Payment Terms:: TT OR LC

Min Order Qty:: 3 m.t.

Supply Capability:: 10000 m.t./month

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Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw

Detailed Information of the Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw

Name	Hot Rolled High Carbon Wire Rod
Shape	Round Bar/Square Bar/Flat Bar/Plate/Wire
Standard	GB/ASTM/SAE/AISI/DIN/JIS/EN/BS
Surface Treatment:	Black/Peeling/Polished/Machined
Delivery Condition:	Hot Rolled or Forged/Peeled or Black Surface
Test	SGS/UT 100% Elements Testing
Certificate:	ISO/Mill Certificate
Service:	24 hours online service /
Service:	more than 20 years trading and manufacture
Quality Assurance:	the third party inspection, such as SGS, BV, TUV…etc. is acceptable
Packaging Details:	Seaworthy Packaging or as per customer's packing instruction

Chemical Composition of the Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw

Grade	Chemical Composition(%)
	C	Mn	Si	S	P	B
SAE1008	0.1max.	0.3~0.50	0.15max	0.050max	≤0.040	>0.0008
	Mechanical properties
	Yield strength(N/mm2)		Tensile strength(N/mm2)		Elongation(%)
	250-280		350-380		≥32

Company Introduction the Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw

CNBM International Corporation is the most import and export platform of CNBM group(China National Building Material Group Corporation) ,which is a state-owned enterprise, ranked in 270th of Fortune Global 500 in 2015.

With its advantages, CNBM International are mainly concentrate on Cement, Glass, Iron and Steel, Ceramics industries and devotes herself for supplying high quality series of refractories as well as technical consultancies and logistics solution.

Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw

After-sale service	CNBM provides the services and support you need for every step of our cooperation. We’re the business partners you can trust; you can relax and get on with doing business.
After-sale service	For any problem, please kindly contact us at any your convenient time, we’ll reply you in our first priority within 24 hours
Advantages	Industry experience over 20 years.
	Shipment of goods -More than 70 countries worldwide.
	The most convenient transport and prompt delivery.
	Competitive price with best service.
	High technical production line with top quality products.
	High reputation based on best quality products.

Packaging & Delivery the Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw

Packaging Detail	Sea worthy packing /as per customer's packing instruction
Delivery Detail	15 ~ 40 days after receiving the deposit

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Grade 10B21 SWRCH6A-22A Cold Heading Steel Wire Rod for Fastener Bolt Screw

FAQ:

Are you a trader or manufacturer?	Manufacturer
What’s the MOQ?	3 metric ton
What’s your delivery time?	15-35 days after downpayment received
Do you Accept OEM service?	Yes
what’s your delivery terms?	FOB/CFR/CIF
What's the Payment Terms?	30% as deposit,70% before shipment by T/T
	Western Union acceptable for small amount.
	L/C acceptable for large amount.
	Scrow ,Paybal,Alipay are also ok
Why choose us?	Chose happens because of quality, then price, We can give you both.
Why choose us?	Additionally, we can also offer professional products inquiry, products knowledge train (for agents), smooth goods delivery, excellent customer solution proposals.
What's your available port of Shipment?	Main Port, China
What’s your featured services?	Our service formula: good quality+ good price+ good service=customer's trust
What’s your featured services?
Where are your Market?	Covering more than 160 countries in the world

Q: How can I determine the cooling water flow of square billet mold for special steel?: The mould water quantity is calculated according to experience. The cooling water quantity of mould is calculated according to the periphery length of mould:W=2 (L+D) - QkW in mould -- cooling water quantity of mould;L - slab width, mm;D - slab thickness, mm;Qk - water flow per unit length, L/ (min = mm), for billet mold, 2.0~3.0L/ (min. Mm).

Q: How does special steel contribute to the transportation equipment industry?: Special steel plays a crucial role in the transportation equipment industry in several ways. Firstly, special steel alloys are used to manufacture various components of vehicles, such as engine parts, suspension systems, and transmission components. These alloys offer superior strength, durability, and corrosion resistance, ensuring that the vehicles can withstand harsh operating conditions and have a longer lifespan. Moreover, special steel is also employed in the production of railway tracks and infrastructure, contributing to the efficiency and safety of the transportation system. The high-quality steel used in railway tracks ensures stability, reduces maintenance requirements, and enhances the overall performance of the railways. In addition, special steel is utilized in the manufacturing of aircraft components, where precision, reliability, and lightness are of utmost importance. Steel alloys with exceptional mechanical properties are employed in critical parts like landing gear, engine components, and structural elements, ensuring the safety and efficiency of air transport. Furthermore, special steel is vital in the production of ships and marine vessels. The use of corrosion-resistant steel alloys in shipbuilding helps to prevent rusting, prolonging the lifespan of the vessels and reducing maintenance costs. Additionally, the high strength-to-weight ratio of certain steel alloys enables the construction of lighter ships, leading to increased fuel efficiency and reduced emissions. Overall, special steel's unique properties and characteristics make it an indispensable material in the transportation equipment industry. Its contribution to the sector includes enhancing the performance, safety, and durability of vehicles, railways, aircraft, and ships, ultimately improving the efficiency and reliability of transportation systems.

Q: How does precipitation hardening enhance the strength of special steel?: Precipitation hardening, also known as age hardening, is a heat treatment process that enhances the strength of special steel alloys. This process involves a series of steps that result in the formation of fine particles or precipitates within the material's microstructure. The strength of special steel is primarily determined by the arrangement and interaction of its atoms. In its initial state, the alloy's atoms are distributed randomly, resulting in a relatively soft and ductile material. However, through precipitation hardening, the formation of precipitates during heat treatment plays a crucial role in strengthening the steel. The process begins by heating the steel to a high temperature, known as solution treatment or aging temperature. This temperature allows the atoms to dissolve and form a solid solution. The alloy is then rapidly cooled to retain the supersaturated state of the solution. Following the rapid cooling, the steel is subjected to a lower temperature, known as aging temperature. At this stage, the dissolved atoms begin to migrate and cluster together, forming small precipitates within the material's microstructure. These precipitates act as obstacles to the movement of dislocations, which are the primary carriers of plastic deformation in metals. The presence of these precipitates hinders the dislocation movement, making it more difficult for them to glide through the crystal lattice. As a result, the strength of the steel is significantly enhanced. The dislocation obstacles provided by the precipitates increase the resistance to deformation, resulting in improved hardness and strength. Furthermore, the size, distribution, and homogeneity of the precipitates play a crucial role in determining the strength enhancement. Smaller and more uniform precipitates provide a higher density of obstacles, leading to a greater strengthening effect. Additionally, the precipitation hardening process also influences other material properties, such as corrosion resistance and toughness. In conclusion, precipitation hardening enhances the strength of special steel by creating fine precipitates within the material's microstructure. These precipitates act as obstacles to dislocation movement, increasing the resistance to deformation and resulting in improved hardness and strength. This heat treatment process plays a crucial role in the development of high-performance special steel alloys used in various industries.

Q: How does special steel contribute to reducing maintenance costs?: Special steel contributes to reducing maintenance costs by offering enhanced durability, corrosion resistance, and wear resistance properties. This means that components made from special steel have a longer lifespan and require less frequent maintenance or replacement. Additionally, special steel can be designed to withstand extreme conditions, reducing the risk of failures and breakdowns, ultimately leading to lower maintenance costs.

Q: What are the challenges in machining special steel with high hardness?: One of the main challenges in machining special steel with high hardness is the excessive tool wear. High hardness steel is extremely tough and can quickly wear down cutting tools, leading to frequent tool changes and increased costs. Additionally, the high hardness of the material makes it more difficult to achieve the desired surface finish and dimensional accuracy. The heat generated during machining can also pose a challenge as it can cause thermal distortion and affect the integrity of the steel. Therefore, finding suitable cutting tools and implementing effective cooling techniques are crucial for successfully machining special steel with high hardness.

Q: Can special steel be used in the production of fasteners for high-stress applications?: Yes, special steel can be used in the production of fasteners for high-stress applications. Special steel alloys like stainless steel or alloy steel offer enhanced strength, durability, and resistance to corrosion, making them suitable for demanding applications where fasteners are subjected to high loads or harsh environments. These special steel fasteners help ensure a secure and reliable connection, even under extreme stress conditions.

Q: What are the challenges in working with special steel?: Working with special steel can present various challenges due to its unique properties. One major challenge is its high hardness, which makes it more difficult to machine, shape, and weld compared to regular steel. Special steel also tends to have lower thermal conductivity, making it more susceptible to heat damage during cutting or grinding processes. Additionally, special steel alloys often have strict composition requirements, meaning precise control over the manufacturing process is necessary to achieve the desired material properties. Overall, the challenges in working with special steel primarily revolve around its hardness, thermal properties, and the need for precise manufacturing techniques.

Q: What are the main applications of special steel in the mining transportation?: Special steel has various applications in the mining transportation sector. It is commonly used in the construction of heavy-duty machinery and equipment such as excavators, dump trucks, and conveyor systems. Special steel's high strength and durability make it ideal for withstanding the harsh conditions and heavy loads encountered in mining operations. Additionally, its resistance to corrosion and wear ensures the longevity of the equipment, reducing maintenance costs and downtime. Overall, special steel plays a crucial role in enhancing the performance and efficiency of mining transportation machinery.

Q: What are the different methods of improving the machinability of special steel?: There are several methods that can be employed to improve the machinability of special steel. These methods include: 1. Alloying: By introducing certain alloying elements, such as sulfur, selenium, lead, or bismuth, into the steel composition, the machinability can be enhanced. These elements act as lubricants during machining, reducing friction and cutting forces. 2. Heat treatment: Heat treatment processes like annealing, normalizing, or stress relieving can help improve the machinability of special steel. These processes refine the microstructure, reduce hardness, and increase ductility, making the material easier to machine. 3. Microstructural modifications: Modifying the microstructure of special steel through processes like grain refinement or controlled precipitation of carbides can enhance machinability. Fine-grained steels are generally easier to machine due to reduced cutting forces. 4. Surface coatings: Applying specialized coatings, such as titanium nitride (TiN) or diamond-like carbon (DLC), on the surface of special steel can reduce friction, improve tool life, and enhance chip flow during machining. 5. Tool selection and optimization: Choosing appropriate cutting tools with specific geometries, coatings, and cutting parameters can significantly improve machinability. Optimal tool selection ensures efficient chip evacuation, reduces heat generation, and minimizes tool wear. 6. Machining parameters optimization: Adjusting machining parameters like cutting speed, feed rate, and depth of cut can have a significant impact on machinability. Fine-tuning these parameters can help reduce tool wear, control chip formation, and achieve better surface finish. 7. Lubrication and cooling: Proper lubrication and cooling methods, such as using cutting fluids or coolants, can enhance machinability by reducing friction and heat generation during machining. This helps prolong tool life and minimize workpiece deformation. It is important to note that the specific method or combination of methods used to improve machinability will depend on the type of special steel and the desired machining outcome.

Q: What is the purpose of cold drawing in special steel production?: The purpose of cold drawing in special steel production is to improve the mechanical properties and dimensional accuracy of the steel. Cold drawing involves pulling the steel through a die at room temperature, which reduces the cross-sectional area and increases the length of the steel. This process helps to refine the microstructure of the steel, resulting in improved strength, hardness, and toughness. Additionally, cold drawing can enhance the surface finish and straightness of the steel, ensuring precise dimensions and making it suitable for various applications where high-quality steel is required. Overall, cold drawing plays a crucial role in enhancing the performance and quality of special steel, making it more reliable and efficient in various industrial sectors.

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