月: 2024年1月

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SS400 Structural Steel

What Is SS400?

SS400, is a general structural rolled carbon steel. “SS” stands for structural steel, and the number 400 indicates a minimum tensile strength of 400 MPa. Structural steel materials like SS400 do not have heat treatment specifications.

SS400 steel’s chemical composition has specific limits for sulfur and phosphorus but does not set particular requirements for carbon content.

Uses of SS400 Structural Steel

SS400 steel, known for its strength, workability, and cost-effectiveness, is the most commonly used structural steel material. It’s primarily employed in structural components for large buildings, such as factories, and civil engineering structures like bridges. SS400 steel is also used in various structural components in ships and industrial machinery.

With a relatively low carbon content of about 1.5% to 2.0%, SS400 steel is less prone to hardening and is usually used without heat treatment. It’s not suited for tools or machine parts requiring high hardness.

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SPHC Steel

What Is SPHC Steel?

SPHC stands for steel plate hot commercial, and describes a type of hot-rolled steel plate. Produced by heating slabs and rolling them in a rolling mill, SPHC steel falls under the general-purpose steel category. Its main characteristic is its softness and resistance to work hardening, making it suitable for bending and deep drawing applications. However, SPHC steel doesn’t come with specific strength standards or guarantees, and its regular form is prone to rust. Its black finish is the result of an oxide film formed during hot rolling does provide some corrosion resistance.

Uses of SPHC Steel

As a general-purpose steel, SPHC is economical and widely used for producing large parts such as automobile bodies and electrical equipment enclosures. Its black finish makes it more suitable for internal or non-visible components. For exterior use, SPHC often undergoes acid pickling and surface treatments like plating or painting to improve its appearance and corrosion resistance. Its cost efficiency and excellent formability make it a popular choice in various industries where these qualities are prioritized.

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Extra Deep Drawing Steel

What Is Extra Deep Drawing Steel (EDDS)?

Extra deep drawing steel (EDDS), is a type of cold-rolled steel. This steel material is produced by first subjecting hot-rolled steel (SPHC) to acid pickling and then to cold rolling at room temperature. Cold rolling is the process of rolling metal after heating it to 600°C or less. EDDS is distinguished by its superior elongation properties compared to standard SPCC steel, making it well-suited for deep drawing processes. Its formability and processability allow it to undergo complex processing that might challenge other steel plates.

Uses of EDDS

EDDS is primarily used in applications requiring excellent deep drawing capabilities. It’s particularly appropriate for automotive exterior parts like fenders and quarter panels. However, its strength is lower than regular cold-rolled steel, which limits its suitability for structural purposes. The absence of a protective film on its surface, due to acid pickling, makes EDDS highly susceptible to rust. To combat this, it usually undergoes surface treatments such as plating or painting post-processing. While EDDS is not ideal for structural applications due to its lower strength, its excellent formability and smooth surface make it valuable for specific uses where these characteristics are essential.

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SPCC Steel

What Is SPCC Steel?

SPCC steel is a type of cold-rolled carbon steel sheet. This steel material, produced by cold-rolling hot-rolled mild steel plates at room temperature, is characterized by its high workability and smooth surface finish. Despite its low corrosion resistance, SPCC’s durability can be enhanced through painting or galvanization.

Uses of SPCC Steel

SPCC is versatile, used in automotive parts like engine components and body panels, household appliances such as refrigerators and air conditioners, building materials including exterior walls and roofs, electronic devices like smartphone casings, and office supplies including desks and shelves.

Properties of SPCC Steel

Key properties of SPCC include:

  • Chemical Composition: Predominantly low-carbon steel with limited amounts of manganese, phosphorus, and sulfur.
  • Strength: Enhanced through cold-rolling, despite being made from low-carbon steel.
  • Surface Appearance: Uniform and smooth, ideal for painting or galvanizing.
  • Thermal Conductivity: High, maintaining stability during heating and cooling processes.

Other Information on SPCC Steel

SPCC benefits from various coatings like zinc and chrome for corrosion resistance and is suitable for processes such as bending, pressing, drawing, cutting, and welding. These processes enhance its formability, precision, and strength in product manufacturing.

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Blackplate

What Is Blackplate?

Blackplate is a type of untreated galvanized steel sheet. It consists of steel plates or strips made from low-carbon steel, usually prior to galvanization. In some instances, these original plates are utilized without any treatment.

Blackplate is available in two forms: warm-rolled and cold-rolled.

Uses of Blackplate

Blackplate is mainly used in creating tin plates and tin-free steel. For tin plates, a tin coating is applied to the blackplate, whereas for tin-free steel, chrome or nickel coatings are used instead of tin. Different types of blackplate, such as mild steel, leaded steel, and deep drawing steel, have distinct applications based on their properties. Mild-steel, known for its corrosion resistance, is versatile and used for containers. Leaded steel, offering enhanced corrosion resistance, is also preferred for container materials. Deep drawing steel, an aluminum-killed steel, is ideal for deep drawing processes, especially in scenarios prone to riddles or wrinkles.

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SGCC Galvanized Steel

What Is SGCC Galvanized Steel?

SGCC is a type of zinc-coated steel sheet, made by coating low-carbon steel sheets with zinc to enhance surface corrosion resistance.

Two types of hot-dip galvanization are applied to SGCC: non-alloy galvanization, where the base steel and zinc don’t alloy, and alloy galvanization, where iron from the base steel alloys with the zinc coating.

Uses of SGCC Galvanized Steel

SGCC is primarily used in:

  • Building Materials: Roofing, walls, door frames, and structural elements.
  • Automotive Components: Body panels, wheels, and muffler tanks.
  • Electrical Equipment: Enclosures, frames, and covers.
  • Home Appliances: Refrigerators, washing machines, and air conditioners.

Properties of SGCC Galvanized Steel

SGCC’s main properties include:

  • Chemical Composition: Low levels of carbon, manganese, phosphorus, and sulfur.
  • Corrosion Resistance: Zinc coating forms a protective oxide layer.
  • Workability: Easily processed through cutting, bending, and welding.
  • Stability: Resists deformation and degradation, ensuring long-term durability.
  • Cost-Effectiveness: Affordable production process and materials.

Other Information on SGCC Galvanized Steel

Alloyed hot-dip galvanized steel sheets, formed by alloying iron and zinc, offer enhanced adherence and extended corrosion resistance compared to non-alloyed sheets. These sheets are characterized by strong zinc adhesion, finer coating grains, and improved paintability.

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S45C Carbon Steel

What Is S45C Carbon Steel?

S45C

S45C carbon steel is a type of medium-carbon steel, commonly used in mechanical structures. It has a carbon content ranging from 0.42% to 0.48%. With its higher carbon content, S45C carbon steel is harder and has greater wear resistance than lower-carbon steels.

The composition of S45C carbon steel includes carbon (0.42% to 0.48%), silicon (Si) (0.15% to 0.35%), manganese (Mn) (0.6% to 0.9%), phosphorus (P) (less than 0.03%), and sulfur (S) (less than 0.035%).

Renowned for its excellent machinability, S45C carbon steel is a highly circulated carbon steel in the market, offering a versatile material choice.

Uses of S45C Carbon Steel

S45C carbon steel is prized for its affordability, superior machinability, and hardenability through heat treatments like quenching. It’s extensively used in the manufacturing of automotive components, particularly in drivetrains and engines. Additionally, S45C carbon steel is a preferred material for gears and shafts in pumps and compressors, benefiting from its enhanced mechanical properties post heat treatment.

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FC250 Gray Cast Iron

What Is FC250 Gray Cast Iron?

FC250

FC250 gray cast iron, specifically, refers to cast iron with a minimum tensile strength of 250 MPa. Its composition typically includes graphite, giving it a distinct grayish appearance and certain mechanical properties.

Uses of FC250 Gray Cast Iron

FC250 gray cast iron is widely used for its hardness and moldability, despite being less strong and more brittle than other iron and steel types. It’s commonly used in automotive components such as cylinder blocks and brake discs, machinery parts like gears and bearings, and in molds for plastic molding and rolling.

Properties of FC250 Gray Cast Iron

FC250 gray cast iron is known for its wear resistance, good machinability, vibration absorption, and castability. It also has inherent lubricity and heat resistance, making it suitable for applications where these properties are essential.

Other Information on FC250 Gray Cast Iron

FC250 gray cast iron has high dimensional stability due to low solidification shrinkage during casting. Its static strength and durability are enhanced by its high density, uniform graphite arrangement, high castability, and the possibility of strengthening through heat treatment. However, its brittleness and lack of ductility make it unsuitable for certain types of machining.

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FC200 Gray Cast Iron

What Is FC200 Gray Cast Iron?

FC200

FC200 gray cast iron is a cast iron variant distinguished by its tensile strength. It has a hardness level of 223 or less. While it is less ductile and more brittle than carbon steel, FC200 is highly regarded for its excellent heat and wear resistance.

Uses of FC200 Gray Cast Iron

FC200 gray cast iron, with its lower strength and brittleness compared to other iron and steel types, is still highly durable and easily moldable. Its notable wear resistance makes it ideal for components subject to wear, such as bearings, gears, brake discs, and manhole covers. Its high specific heat and thermal conductivity contribute to its resistance to high temperatures and superior vibration absorption, making it well-suited for machine tool tables, fire doors, diesel engine cylinder liners, and hydraulic pump components.

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Veneer Plywood

What Is Veneer Plywood?

Veneer Plywood

Veneer plywood, often referred to as decorative plywood, is a plywood variant enhanced for aesthetic appeal. It involves applying a veneer surface treatment to plywood sheets.

There are two primary types: natural wood veneer plywood and specially processed veneer plywood.

Uses of Veneer Plywood

Veneer plywood is extensively used in interior building materials, including ceilings, walls, doors, and furniture. Natural wood veneer plywood is popular in residential interiors, gymnasiums, and furniture surfaces. Synthetic resin laminated veneer plywood, known for its waterproofing capabilities, is often used in countertops and wet areas. Printed veneer plywood, offering varied designs, is used in furniture surfaces, kitchen veneers, and interior decor.

Principles of Veneer Plywood

Natural wood veneer plywood provides a solid wood-like texture by slicing natural hardwood into veneers. Specially processed veneer plywood receives treatments like painting and printing, with some varieties like polyester resin veneer offering waterproof properties and design versatility.

Types of Veneer Plywood

Veneer plywood varieties include sheets, single-veneer, and laminate. Sheet plywood includes olefin, vinyl, and reinforced paper. Single-veneer plywood includes high-pressure melamine decorative plywood, known for surface hardness and heat resistance. Laminate comprises low-pressure melamine decorative plywood, polyester veneer, and polyboard, each offering specific benefits like cost savings and ease of use.

How to Choose Veneer Plywood

Choosing veneer plywood depends on the desired aesthetics and functionality. Natural wood veneer plywood is ideal for wood-like beauty, while specially processed veneer plywood allows for diverse design options. Considerations such as heat resistance and durability are crucial for kitchen applications. It’s also essential to consider formaldehyde emissions for indoor air quality.