CuZn36: Legeringen som balanserar styrka och bearbetbarhet

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Innehållsförteckning

When it comes to selecting materials for engineering, manufacturing, or decorative applications, brass alloys often emerge as a top contender. Brass is not only aesthetically pleasing but also offers a blend of styrka, workability, och korrosionsbeständighet. Among the wide range of brass alloys, CuZn36 stands out as a popular choice due to its high copper content, good formability, och excellent corrosion resistance.

But what exactly is CuZn36? Why is it so widely used across various industries? How does it compare to other brass alloys? In this comprehensive guide, we’ll dive deep into CuZn36, exploring everything from its sammansättning och mechanical properties to its applications, specifications, och prissättning. By the end of this article, you’ll have a clear understanding of why CuZn36 may be the perfect material for your next project.


Översikt

CuZn36, also known as C27000 eller CW507L, is a brass alloy composed of approximately 64% copper (Cu) och 36% zinc (Zn). This combination gives CuZn36 a golden-yellow color, excellent korrosionsbeständighet, och good formability. Its high copper content makes it more corrosion-resistant than higher zinc-content alloys, while still maintaining a balance of styrka och ductility.

Key Characteristics :

  • High Copper Content: CuZn36 has a relatively high copper content, which enhances its korrosionsbeständighet och värmeledningsförmåga.
  • God formbarhet: CuZn36 is highly workable, making it suitable for deep drawing, bending, och stamping.
  • Motståndskraft mot korrosion: The alloy performs well in freshwater, mildly corrosive environments, och atmospheric conditions.
  • Aesthetic Appeal: Its golden-yellow hue makes it a popular choice for decorative applications.
  • Moderate Strength: CuZn36 offers a good balance between styrka och ductility, making it suitable for a variety of applications where formability is crucial.

Sammansättning och egenskaper

Understanding the sammansättning och mechanical properties of CuZn36 is essential if you’re considering it for a specific application. Let’s break down its chemical makeup and explore its physical och mechanical properties in detail.

Kemisk sammansättning

ElementProcentuell andel (%)
Koppar (Cu)63.0 – 65.0
Zink (Zn)Balance (35.0 – 37.0)
Bly (Pb)≤ 0.05
Järn (Fe)≤ 0.05
Other elementsTrace amounts

The high copper content in CuZn36 gives it enhanced corrosion resistance och värmeledningsförmåga, making it suitable for applications in aggressive environments.

Mechanical and Physical Properties

FastighetVärde
Draghållfasthet300 – 450 MPa
Utbyteshållfasthet100 – 180 MPa
Töjning25 – 45%
Täthet8.44 g/cm³
Hårdhet80 – 120 HB
Termisk konduktivitet120 W/m·K
Elektrisk konduktivitet28% IACS
Smältpunkt900 – 940°C

Viktiga slutsatser:

  • Strength and Ductility: CuZn36 offers moderate styrka with high ductility, which makes it ideal for deep drawing och forming processes.
  • Motståndskraft mot korrosion: Thanks to its high copper content, CuZn36 performs well in mildly corrosive environments and maintains its properties in atmospheric conditions.
  • Thermal and Electrical Conductivity: CuZn36 has relatively good värmeledningsförmåga, making it a suitable material for heat exchangers, while its elektrisk ledningsförmåga is moderate, making it useful for low-voltage electrical applications.

Tillämpningar

Thanks to its combination of styrka, formability, och korrosionsbeständighet, It is widely used across multiple industries. From automotive till plumbing, it continues to prove itself as a versatile brass alloy.

Vanliga tillämpningar

IndustriTypiska tillämpningar
PlumbingPipes, fittings, valves, and couplings
ElektronikConnectors, terminals, and low-voltage components
FordonRadiators, gaskets, and decorative trim
KonstruktionArchitectural hardware, door handles, and fixtures
HVACHeat exchangers, condenser tubes, and evaporators
DecorativeJewelry, coins, ornamental items, and musical instruments

Why CuZn36 is Ideal for These Applications:

  1. Plumbing: CuZn36’s korrosionsbeständighet och workability make it a top choice for pipes, valves, och fittings used in freshwater environments.
  2. Elektronik: The alloy’s good electrical conductivity makes it a solid choice for connectors och terminals where low-voltage performance is required.
  3. Fordon: CuZn36’s balance of värmeledningsförmåga och styrka makes it ideal for use in radiators och heat exchangers.
  4. Konstruktion: CuZn36’s golden color och korrosionsbeständighet make it a popular choice for architectural hardware och decorative elements.
  5. HVAC: CuZn36’s värmeledningsförmåga och korrosionsbeständighet make it especially suited for heat exchangers och condenser tubes.
  6. Decorative: The alloy’s bright finish och formbarhet make it perfect for items like jewelry och ornamental pieces.

Specifikationer, storlekar och standarder

Knowing the specifications, sizes, och standards for CuZn36 is crucial when sourcing materials for your project. The following table provides a general overview of available sizes and standards for it.

Common Standards and Specifications

StandardBeskrivning
ASTM B36Specification for brass plates, sheets, strips, and rolled bars
EN 1652European standard for copper and copper alloys in strip form
JIS H3250Japanese standard for brass plates and strips
ISO 431International standard for brass alloy compositions

Available Forms and Sizes

FormStorleksintervall
StavarDiameter: 5 mm to 120 mm
Sheets/PlatesThickness: 0.5 mm to 50 mm
RörDiameter: 6 mm to 100 mm
LedningarDiameter: 0.5 mm to 10 mm

Depending on the supplier, custom sizes can be manufactured to meet specific project requirements, ensuring that you get the exact materials you need.


Leverantörer och prissättning

Understanding the availability och prissättning of CuZn36 is essential when planning your project. Prices for CuZn36 can vary depending on supplier location, market conditions, och order size.

Typical Suppliers and Pricing

LeverantörPlatsPrisintervall (per kg)Ledtid
KME GermanyTyskland$7 – $122-4 weeks
Aviva MetalsUSA$8 – $141-3 weeks
Shanghai Metal CorporationKina$6 – $113-5 weeks
Smiths MetalsSTORBRITANNIEN£6 – £121-2 veckor

Factors Affecting CuZn36 Pricing

  1. Market Conditions: The prices of copper och zinc fluctuate in response to global supply and demand, impacting CuZn36’s cost.
  2. Beställning Antal: Larger orders often come with bulk pricing discounts, while smaller orders may have a slightly higher price per kilogram.
  3. Form and Processing: Sheets, rods, and custom-cut components may come with additional processing fees, making them more expensive than standard forms.
  4. Shipping and Logistics: Sourcing materials from international suppliers could incur additional shipping costs och import taxes.

Fördelar och begränsningar

As with any material, it comes with its own set of Fördelar och Begränsningar. Knowing the pros and cons of this brass alloy can help you make an informed decision for your specific application.

Fördelar och begränsningar

FördelarBegränsningar
Excellent formability: It can be easily worked in cold conditions, making it ideal for deep drawing och stamping.Måttlig styrka: While it offers good formability, its strength is lower than some other brass alloys.
God korrosionsbeständighet: Its high copper content provides good protection against corrosion in non-aggressive environments.Not suitable for high-stress applications: CuZn36’s strength may not be sufficient for applications that require high mechanical loads.
Aesthetic appeal: It has a bright, golden-yellow finish, making it a great choice for decorative applications.Begränsad bearbetbarhet: It isn’t as machinable as leaded brasses like CuZn39Pb3, which may limit its use in precision machining.
Affordable: It is more kostnadseffektiva than some higher-copper-content alloys, making it ideal for mass production.Lower electrical conductivity: While better than some other alloys, CuZn36’s elektrisk ledningsförmåga is lower than that of pure copper.

Comparing CuZn36 with Other Brass Alloys

When selecting the best brass alloy for your project, it’s critical to compare CuZn36 with other commonly used alloys. Each alloy has its own strengths and weaknesses, so understanding how it stacks up against alternatives can help you make the right choice.

CuZn36 Compared to Other Brass Alloys

FastighetCuZn36CuZn37CuZn39Pb3CuZn40
Draghållfasthet300 – 450 MPa300 – 500 MPa300 – 450 MPa350 – 550 MPa
BearbetbarhetMåttligMåttligUtmärktBra
Motståndskraft mot korrosionBraBraMåttligBra
Elektrisk konduktivitet28% IACS28% IACS25% IACS28% IACS
FormbarhetUtmärktUtmärktBraBra

Key Comparisons:

  • CuZn36 vs. CuZn37: Both alloys offer excellent formability, but CuZn37 may have slightly better styrka. CuZn36, however, is more commonly used in decorative applications due to its bright finish.
  • CuZn36 vs. CuZn39Pb3: CuZn39Pb3 is superior in terms of machinability, thanks to the presence of lead, but CuZn36 offers better korrosionsbeständighet and is a more suitable choice for ornamental applications.
  • CuZn36 vs. CuZn40: CuZn40 provides higher strength and better machinability, making it a better choice for load-bearing components, whereas CuZn36 is more suitable for deep drawing och stamping.

Vanliga frågor och svar (FAQ)

To help you better understand CuZn36, here are some frequently asked questions about this alloy.

FrågaSvar
What is it used for?It is commonly used in plumbing, automotive, decorative, och HVAC applications due to its formability och korrosionsbeständighet.
Is it suitable for electrical applications?It has moderate elektrisk ledningsförmågavilket gör den lämplig för low-voltage electrical components.
How does it compare to other brass alloys?It offers excellent formability och korrosionsbeständighet, but other alloys like CuZn39Pb3 may offer better machinability.
Can it be machined easily?It is moderately machinable but isn’t as easy to machine as leaded brasses like CuZn39Pb3.
What is the tensile strength of CuZn36?It has a draghållfasthet ranging from 300 to 450 MPa, depending on processing methods.
Is it lead-free?Yes, it is a lead-free alloy, making it safe for use in drinking water systems and other applications where lead content is restricted.

Slutsats

It is a versatile brass alloy that combines a range of beneficial properties, inklusive good formability, korrosionsbeständighet, och aesthetic appeal. Whether you’re designing plumbing systems, skapa decorative hardware, or manufacturing automotive components, it offers the styrka, workability, och cost-effectiveness you need.

While it might not offer the highest strength eller machinability compared to other brass alloys, CuZn36’s balance of properties makes it an ideal choice for applications where formability och korrosionsbeständighet are critical. If you’re looking for a brass alloy that delivers performance without breaking the bank, it should be at the top of your list.

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