Spring Steel

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Loading Port:
China Main Port
Payment Terms:
TT or LC
Min Order Qty:
100Tons m.t.
Supply Capability:
500Tons Per Day m.t./month
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Spring Steel can be divided into two types. One is carbon spring steel, and other one is alloy spring steel.

Alloy spring steel is based on carbon spring steel, by adding one or more alloying elements to improve the mechanical properties, hardenability and other properties to meet the requirement for manufacturing all kinds of spring steel.

 

Specification of Spring Steel:

-Material: 70Si2CrA

-Production: Hot rolled or cold rolled

-Standard: GB/T·5218-1999

-Type: Spring Steel

-Alloy or no: Alloy

 

Chemical Composition:

C

Mn

Si

Cr

0.65~0.75

0.40~0.60

1.40~1.70

0.20~0.40

S

P

Ni

≤0.030

≤0.030

≤0.030

 

Mechanical Properties:

-Annealing Condition:

1, Tensile Strength: σb/MPa≤835

2, Elongation: δ/%≥8

-Quencher condition:

1, Tensile strength: σb/MPa785~1175

2, Elongation: -

 

Usage/Applications of Spring Steel:

For manufacturing all kinds of flat spring or round spring with small sections, clockwork spring,

 

Packaging & Delivery of Spring Steel:

-Packing Detail: The products can be packed in bundles by steel wires.

-Marks:

1, Tag marks: the tag marks will be tied up to each bundle of the products. The information is usually including supplier’s logo and name, product name, made in China, products’ specifications, the painted color and other information requested by customers.

2, Color marks: we will paint both ends of the bundles of these products to make sure that they are more evident. It’s will be more convenient for the customers to distinguish them at the destination port.

-Delivery Detail:

1, Delivery time: 30~45 working days after receive buyer’s T.T. or L/C.

2, Delivery status should be written in the contract. (Heat treatment or no)

 

Payment:

-Invoicing on theoretical weight or actual weight as customer’s request.

-FOB, CFR or CIF.

-Regular terms of payment:

1, 30% payment in advance, the remaining balance (70% payment) against the copy of B/L. 100% payment before shipment.

2, 30% payment in advance, the remaining balance (70% L/C) against the copy of B/L. 100% payment before shipment.

3, Negotiable.

 

Photos of Spring Steel:

Spring Steel

Spring Steel

Spring Steel

Q:
Special steel typically performs well in high-temperature hydrogen environments due to its excellent resistance to hydrogen embrittlement and oxidation. It maintains its mechanical strength and integrity, preventing potential failures or degradation in such conditions. Additionally, special steel alloys can exhibit enhanced corrosion resistance, making them suitable for various industrial applications involving high-temperature hydrogen exposure.
Q:
Heat-resistant steel is known for its ability to withstand high temperatures without undergoing significant deformation or oxidation. It has excellent thermal stability, retaining its strength and hardness even at extreme heat levels. Additionally, heat-resistant steel exhibits low thermal expansion and good thermal conductivity, making it suitable for applications requiring thermal resistance and efficient heat transfer. It also possesses a high melting point, allowing it to maintain its structural integrity even under intense heat. These properties make heat-resistant steel ideal for applications such as furnace components, jet engine parts, and high-temperature industrial processes.
Q:
Special steel is a broad term that encompasses a variety of steel alloys with specific properties and characteristics. The chemical composition of special steel can vary depending on the specific grade or type of steel being referred to. However, in general, special steel often contains higher amounts of alloying elements compared to regular carbon steel. These alloying elements can include elements such as chromium, nickel, molybdenum, vanadium, tungsten, and others. The specific combination and proportion of these alloying elements determine the unique properties of special steel, such as increased strength, enhanced corrosion resistance, improved heat resistance, or better wear resistance. For example, some common types of special steel include stainless steel, which typically contains high amounts of chromium and nickel, providing excellent corrosion resistance; tool steel, which has high carbon content and often contains other elements like vanadium or tungsten, making it suitable for cutting, drilling, or shaping tools; and high-speed steel, which contains elements like molybdenum, cobalt, or tungsten, giving it exceptional hardness and heat resistance for use in cutting tools or drills. In summary, the chemical composition of special steel varies depending on the specific type or grade, but it generally includes higher amounts of alloying elements to achieve desired properties such as strength, corrosion resistance, heat resistance, or wear resistance.
Q:
Some of the different heat treatment processes used in special steel production include annealing, quenching, tempering, and normalizing. Annealing is a process of heating and slowly cooling the steel to relieve internal stresses and enhance its ductility. Quenching involves rapidly cooling the steel to increase its hardness and strength. Tempering is done after quenching to reduce brittleness and improve toughness. Normalizing is a heat treatment process that involves heating the steel to a specific temperature and then cooling it in still air to achieve a uniform structure. These processes are essential for achieving the desired mechanical properties and performance of special steel.
Q:
The environmental impacts of special steel production include air pollution from the combustion of fossil fuels used in the production process, water pollution from the discharge of wastewater containing heavy metals and chemicals, and land degradation from mining activities to extract raw materials. Additionally, the high energy intensity of steel production contributes to greenhouse gas emissions, contributing to climate change.
Q:
For special steel, various casting methods are commonly utilized, depending on the specific requirements and needs of the application. These methods encompass investment casting, sand casting, continuous casting, and centrifugal casting. 1. Investment casting: To create the desired part, a wax pattern is made and coated with a ceramic shell. The wax is melted away, leaving a hollow shell that is then filled with molten steel. After solidification, the ceramic shell is broken, yielding the final part. Investment casting enables the production of accurate and intricate shapes, making it ideal for high-quality and precise special steel components. 2. Sand casting: Among the oldest and most prevalent casting techniques, sand casting involves forming a mold using a mixture of sand and a binder like clay. The mold is shaped around a pattern of the desired part and molten steel is poured into it. Upon cooling and solidification, the casting is complete. Sand casting is versatile and cost-effective, suitable for producing large and heavy special steel components. 3. Continuous casting: This method is commonly employed for manufacturing long steel products such as bars, rods, and billets. Molten steel is continuously poured into a water-cooled mold, which solidifies the outer surface. The solidified steel is then continuously withdrawn as more molten steel is poured in. Continuous casting ensures high-quality steel with a consistent cross-section, devoid of defects. 4. Centrifugal casting: In this technique, molten steel is poured into a rotating mold. The centrifugal force drives the molten steel towards the outer walls, resulting in a dense and compact casting with enhanced mechanical properties. Centrifugal casting is particularly suitable for producing cylindrical or tubular special steel components such as pipes and rings. In summary, the selection of a casting method for special steel hinges on factors like part complexity, required quality and accuracy, component size and shape, and production volume. Each method has its advantages and limitations, necessitating careful consideration to determine the most appropriate casting technique for a specific application.
Q:
There are several methods of measuring the hardness of special steel, including the Rockwell hardness test, Vickers hardness test, Brinell hardness test, and the Knoop hardness test. These methods involve applying a specific force or load to a small area of the steel surface and measuring the depth or size of the resulting indentation. Each method has its own advantages and is suitable for different types of steel and specific applications.
Q:
Wear and abrasion pose tough challenges in various industries, including mining, construction, cement, and steel manufacturing. To combat these challenges, wear-resistant castings are purposefully designed. These castings boast several key characteristics: 1. Hardness: Wear-resistant castings are crafted from materials with exceptional hardness ratings. This quality enables them to withstand friction, impact, and surface damage, preventing deformation. 2. Toughness: Apart from their hardness, these castings also possess high toughness. This means they can endure immense energy absorption without fracturing or breaking, ensuring their longevity and durability in demanding environments. 3. Corrosion resistance: Often, wear-resistant castings are resistant to corrosion and oxidation. This feature aids in extending their lifespan and maintaining their performance, even in corrosive or high-temperature conditions. 4. Heat resistance: With the ability to withstand high temperatures without compromising their hardness or strength, wear-resistant castings are perfect for applications involving heat generation or transfer. Industries like industrial machinery or power plants can benefit greatly from this quality. 5. Wear resistance: As the name implies, the primary characteristic of wear-resistant castings is their ability to resist wear. They are designed to minimize material loss caused by abrasion, erosion, or friction. Consequently, they ensure a longer lifespan and reduced maintenance requirements. 6. Customizability: Wear-resistant castings can be tailored to meet specific applications and requirements. They can be produced in a range of shapes, sizes, and configurations, offering customized solutions for wear-related challenges in different components and machinery. Overall, wear-resistant castings play a vital role in industries where wear and abrasion are prevalent. By increasing equipment lifespan and reliability, reducing downtime, and improving operational efficiency, these castings prove to be indispensable components in various sectors.
Q:
There are several production methods for special steel, including electric arc furnace (EAF), basic oxygen furnace (BOF), and vacuum arc remelting (VAR). Each method has its own advantages and is used depending on the specific requirements of the steel being produced. EAF is commonly used for recycling scrap steel and allows for flexibility in alloy composition. BOF is more suitable for large-scale production and is known for its efficiency in removing impurities. VAR is a specialized method used to refine and purify steel, resulting in high-quality, homogeneous products.
Q:
The outstanding performance of special steel in resisting high-temperature creep is well-known. Creep refers to the tendency of a material to deform or strain under constant stress when it is subjected to elevated temperatures. Ordinary steels may experience notable creep under such conditions, which can result in a decrease in their mechanical properties and potential failure. However, special steels are specifically engineered to endure high-temperature creep, making them extremely suitable for applications where resistance to time-dependent deformation is crucial. These steels are frequently alloyed with elements like chromium, molybdenum, and vanadium, which enhance their properties at high temperatures. The alloying elements present in special steels create stable carbides and nitrides, which serve as strengthening agents. They hinder grain growth and prevent dislocation movement, thereby leading to improved creep resistance and structural stability even in extremely high temperatures. Moreover, special steels often undergo heat treatment processes like quenching and tempering, which further enhance their resistance to creep and overall mechanical performance. Additionally, the microstructure of special steels is meticulously controlled during the manufacturing process to ensure optimal resistance to creep. Typically, fine-grained structures with a high concentration of precipitates or second-phase particles are developed. These structures impede dislocation movement and enhance creep strength. To summarize, special steels possess exceptional resistance to high-temperature creep due to their alloying elements, heat treatment processes, and controlled microstructures. They can withstand prolonged exposure to elevated temperatures without significant deformation or loss of mechanical properties, making them indispensable in industries such as aerospace, power generation, and petrochemicals where high-temperature applications are prevalent.
ORIGIN,a well-known enterprise specializing in the production and sales of Spring steel and aluminum powder.

1. Manufacturer Overview

Location Jiangsu, China
Year Established 2003
Annual Output Value Above US$ 30 Million
Main Markets Asia-Pacific; Middle east
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Shanghai.
Export Percentage 20% - 30%
No.of Employees in Trade Department 10-20 People
Language Spoken: English; Chinese
b)Factory Information  
Factory Size: Above 100,000 square meters
No. of Production Lines 2
Contract Manufacturing OEM Service Offered;
Product Price Range Average

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