SG-CuAl8: Den höghållfasta legeringen för kritiska tekniska behov

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Innehållsförteckning

When it comes to industrial applications that demand high strength, excellent wear resistance, and the ability to withstand the harshest environments, SG-CuAl8 stands out among other copper-aluminum alloys. Known for its durability, korrosionsbeständighet, och thermal stability, SG-CuAl8 is a material that has become essential in various industries, from marine engineering till flyg- och rymdindustrin.

But what makes SG-CuAl8 so special? In this detailed, SEO-optimized guide, we’ll dive deep into every aspect of SG-CuAl8, including its sammansättning, mechanical properties, applications, prissättning, och supplier details. Whether you’re an engineer, a product designer, or someone simply curious about high-performance alloys, this article will provide you with all the information you need to make informed decisions.


Översikt

SG-CuAl8 is a copper-aluminum alloy that contains approximately 8% aluminum, with the remaining composition being copper and trace elements. This alloy is widely recognized for its excellent mechanical properties, hög hållfasthet, och good corrosion resistance, especially in saltwater environments. It’s commonly used in gear components, bearing bushes, valves, och marine parts, where the material’s ability to resist wear and corrosion makes it indispensable.

In addition to its korrosionsbeständighet, SG-CuAl8 also provides good thermal conductivity och high wear resistance, which makes it suitable for heavy-duty applications that require long-lasting performance under extreme conditions. Let’s explore the chemical composition, mechanical properties, och key characteristics of this alloy in more detail.


Sammansättning och egenskaper

The properties of SG-CuAl8 are directly related to its chemical composition. The addition of aluminum to copper significantly enhances the alloy’s styrka och korrosionsbeständighet, while also improving its thermal stability. Let’s break down the specific elements that make up SG-CuAl8 and examine how they contribute to the material’s overall performance.

Kemisk sammansättning

ElementProcentuell andel (%)
Koppar (Cu)91.0 – 92.5
Aluminium (Al)7.0 – 8.5
Järn (Fe)≤ 0.5
Nickel (Ni)≤ 0.3
Mangan (Mn)≤ 0.2

As you can see, aluminum is the primary alloying element in SG-CuAl8, contributing to its hög hållfasthet och korrosionsbeständighet. The trace amounts of iron, nickel, och manganese also enhance the alloy’s hardness och wear resistance.

Mechanical and Physical Properties

FastighetVärde
Draghållfasthet400 - 600 MPa
Utbyteshållfasthet180 – 250 MPa
Töjning15 – 25%
Täthet7.6 – 7.8 g/cm³
Hardness (HB)90 – 150 HB
Termisk konduktivitet70 W/m·K
Elektrisk konduktivitet10% IACS
Smältpunkt1030 – 1050°C

The high draghållfasthet och sträckgräns make SG-CuAl8 suitable for applications that require high load-bearing capacity. Additionally, its elongation properties ensure that the material can withstand deformation without cracking, which is essential for components exposed to varying stresses.


Tillämpningar

The versatility of SG-CuAl8 makes it ideal for diverse applications, especially in environments where resistance to wear and corrosion is critical. Its thermal stability och mechanical properties make it a go-to material in industries such as marine, automotive, flyg- och rymdindustrin, och heavy machinery. Below, we’ve highlighted the most common uses of SG-CuAl8.

Vanliga tillämpningar

IndustriTypiska tillämpningar
Marin teknikPropeller components, valve bodies, pump parts
Flyg- och rymdindustrinLanding gear bushings, gear components
FordonBearings, bushings, gears, valve stems
Heavy MachineryWear-resistant components, gears, shafts
Olja och gasPipe fittings, valves, and components for offshore drilling
KonstruktionStructural components, fasteners, and fittings

Detailed Application Breakdown:

  1. Marin teknik: SG-CuAl8 is highly sought after in marine environments due to its excellent korrosionsbeständighet in saltwater. It’s often used in propeller shafts, valves, och pump components where exposure to water and pressure is constant.
  2. Flyg- och rymdindustrin: In aerospace applications, SG-CuAl8 is used in gear components och bushings due to its low friction och high wear resistance. The material’s ability to maintain performance under extreme temperatures is a key advantage in this industry.
  3. Fordon: In the automotive sector, components like bearings, bushings, och gears demand materials that can handle friction och continuous wear. SG-CuAl8 offers the necessary durability och styrka, making it a critical material in the production of heavy-duty automotive parts.
  4. Olja och gas: SG-CuAl8’s resilience in harsh environments makes it a popular choice in the oil and gas industry, particularly in offshore drilling where korrosionsbeständighet is crucial.

Specifikationer, storlekar och standarder

When working with SG-CuAl8, it’s important to understand the common standards, sizes, och specifications that apply to the material. These standards ensure that the alloy meets the required performance characteristics for specific applications, whether you’re working on marine propellers eller automotive bushings.

Common Standards and Sizes

StandardBeskrivning
DIN 1714German standard for copper-aluminum alloys
EN 1982European standard for copper and copper alloy castings
ASTM B148Specification for aluminum-bronze sand castings
ISO 1338International standard for copper-aluminum alloy compositions

Available Forms and Sizes

FormStorleksintervall
StavarDiameter: 10 mm to 300 mm
PlattorThickness: 5 mm to 100 mm
BarerDiameter: 20 mm to 400 mm
RörDiameter: 15 mm to 250 mm
Custom ShapesTillgänglig på begäran

Custom Sizes and Shapes

Many suppliers offer custom sizes och shapes of SG-CuAl8 to meet the specific needs of various industrial applications. Whether you’re manufacturing large-scale machinery eller small precision components, SG-CuAl8 can be tailored to fit your project requirements.


Price and Suppliers

The cost of SG-CuAl8 can vary based on factors like market conditions, order volume, and the specific form of the material. Here, we’ve compiled a list of suppliers and pricing details to give you a better understanding of what to expect when sourcing SG-CuAl8 for your projects.

Leverantörer och prissättning

LeverantörPlatsPrisintervall (per kg)Ledtid
LKM MetalsTyskland$12 – $162-4 weeks
Aviva MetalsUSA$13 – $171-3 weeks
Shanghai Metal CorporationKina$11 – $153-5 weeks
Smiths Metal CentresSTORBRITANNIEN£10 – £141-2 veckor

Factors Affecting SG-CuAl8 Pricing

Several factors influence the final cost of SG-CuAl8:

  1. Market Conditions: Like many metal alloys, the price of SG-CuAl8 is influenced by global commodity markets, particularly the prices of copper och aluminum.
  2. Order Volume: Bulk orders often receive discounts, while smaller orders may incur higher costs per kilogram.
  3. Krav på bearbetning: If you need specialized processing, such as cutting eller machining, these services may add to the overall cost.
  4. Shipping and Delivery: Depending on the supplier’s location, shipping costs can also impact the final price, especially for international orders.

Fördelar och begränsningar

While SG-CuAl8 offers numerous benefits, it’s also important to understand its limitations. Below, we’ve outlined the Fördelar och disadvantages of using it in various applications.

Fördelar och begränsningar

FördelarBegränsningar
Utmärkt slitstyrka: Ideal for high-friction applications like gears and bearings.Moderate machinability: it is harder to machine compared to other copper alloys, requiring specialized tools.
Överlägsen korrosionsbeständighet: Performs well in marine and corrosive environments.Tyngre än vissa alternativ: The alloy’s density makes it heavier than other materials like aluminum or titanium.
Hög hållfasthet: Offers strong mechanical properties for load-bearing applications.Högre kostnad: it is more expensive compared to standard copper alloys.
Termisk stabilitet: Performs well in both high and low-temperature environments.Limited electrical conductivity: While not a major concern for mechanical parts, it is not ideal for electrical applications.

SG-CuAl8 vs. Other Copper-Alluminum Alloys

It’s essential to compare SG-CuAl8 with other copper-aluminum alloys to understand where it shines and where it may fall short. Below, we compare SG-CuAl8 with some commonly used copper-aluminum alloys in terms of styrka, korrosionsbeständighet, och cost.

SG-CuAl8 vs. Other Copper-Aluminum Alloys

LegeringSG-CuAl8CuAl10CuAl9Ni5CuAl6
Aluminum Content8%10%9%6%
Draghållfasthet400 - 600 MPa500 – 700 MPa600 – 800 MPa300 – 450 MPa
Motståndskraft mot korrosionExcellent in marine environmentsExcellent in marine environmentsSuperior in seawaterMåttlig
BearbetbarhetMåttligMåttligDåligBra
KostnadMediumMedelhög-HögHögLåg-Medium

Key Comparisons:

  1. SG-CuAl8 vs. CuAl10: CuAl10 offers slightly higher styrka och korrosionsbeständighet, but SG-CuAl8 has better machinability and is easier to work with, making it a more versatile material for certain applications.
  2. SG-CuAl8 vs. CuAl9Ni5: CuAl9Ni5 has superior styrka och seawater resistance, making it ideal for naval applications. However, SG-CuAl8 is easier to machine and costs less, making it a better option for general-purpose use.
  3. SG-CuAl8 vs. CuAl6: CuAl6 is less expensive and easier to machine, but it offers lower strength och korrosionsbeständighet, making it less suitable for heavy-duty applications compared to SG-CuAl8.

Vanliga frågor och svar (FAQ)

As we conclude this guide, here are some frequently asked questions about SG-CuAl8, providing quick answers to common inquiries.

FrågaSvar
What is it used for?It is primarily used in marine engineering, flyg- och rymdindustrin, automotive, och heavy machinery due to its korrosionsbeständighet och wear resistance.
Is it suitable for marine environments?Yes, it offers excellent korrosionsbeständighet in saltwater, making it ideal for marine components som valves och propellers.
What is the tensile strength of SG-CuAl8?It has a draghållfasthet ranging from 400 to 600 MPa, depending on the processing and application.
Can it be machined easily?Den har moderate machinability and may require special cutting tools, especially for precision applications.
How does it compare to CuAl10?Medan CuAl10 offers higher styrka, it provides better machinability and is easier to work with, making it more versatile for general use.
Is it used in aerospace applications?Yes, it is used in aerospace components such as bushings och gear parts due to its thermal stability och wear resistance.
What are the main advantages of SG-CuAl8?It offers excellent wear resistance, hög hållfasthet, och korrosionsbeständighet, especially in marine environments.

Slutsats

Sammanfattningsvis, it is a high-performance copper-aluminum alloy that excels in styrka, korrosionsbeständighet, och thermal stability. Its versatility makes it a go-to material for industries ranging from marine engineering till automotive och flyg- och rymdindustrin. Whether you’re designing gears, bearings, or propeller components, it delivers the durability and performance needed to withstand harsh environments and demanding applications.

By understanding the sammansättning, properties, och applications of SG-CuAl8, you can make informed decisions about whether this alloy is the right fit for your next project. With its long-lasting durability, resistance to wear, och corrosion protection, it is an excellent choice for a wide variety of industrial applications.

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