service@jtgroup.com.cn
+86-057483005999
+86-18057437999
en
en
Ningbo Jintian Copper (Group) Co., Ltd.
Ningbo Jintian Copper (Group) Co., Ltd.
Code
Brass

C4430 Brass

Brass

Grade Name

C4430 Tin Brass (Naval Brass)


Key Features

  • Corrosion Resistance: Arsenic (0.02–0.06%) inhibits dezincification, ideal for marine environments.

  • Machinability: Excellent hot-working (760–800℃) and cold-forming capabilities.

  • Mechanical Properties: Tensile strength ≥315 MPa (annealed), elongation ≥15%.

  • Compliance: Meets GB/T 14954-1994 and ASTM B111M standards.


Product Forms & Dimensions

Form

Size Range

Standards

Rod

Diameter 2–300mm, Length 1–12m

JIS H3250-2015

Plate

Thickness 0.5–60mm, Width 100–2000mm

ASTM B36/B36M

Wire

Diameter 0.2–12mm, Coil ≥3kg

JIS H3300-2018

Tube

OD 5–300mm, Wall Thickness 0.5–30mm

EN 12449:1999

Strip

Thickness 0.1–2.5mm, Width ≤250mm

ASTM B134


Chemical Composition

Element

Content (%)

Standard Range

Cu

59.0–61.0

Main Component (GB/T 14954)

Sn

1.0–1.5

Corrosion Resistance

As

0.02–0.06

Dezincification Inhibitor

Fe

≤0.10

Impurity Control

Pb

≤0.30

Limited Content 1

Zn

Balance

Balancing Component

Impurities

≤1.0

Total Limit


Physical Properties

Property

Value/Description

Density

8.53 g/cm³

Electrical Conductivity

25% IACS (20℃)

Thermal Conductivity

64.0 W/(m·K)

Thermal Expansion

20×10⁻⁶/℃ (20–300℃)


Mechanical Properties


Condition

Tensile Strength (MPa)

Elongation (%)

Hardness (HRB)

Annealed (O)

315–379

≥15

50–65 HRB

Hard (H)

≥410

≥8

≥80 HB



Core Advantages

1. Marine Durability: Ideal for condensers and heat exchangers in seawater.

2. Versatile Processing: Adaptable to hot/cold working and welding.

3. Cost Efficiency: Balances strength and affordability for mass production.


Applications

  • Marine Engineering: Condenser tubes, ship fittings.

  • Energy Systems: Heat exchangers in power plants.

  • Architectural Hardware: Corrosion-resistant bolts and valves.

  • Electronics: Connectors and heat sinks (with protective coatings).


Processing Guidelines

  • Hot Working: 760–800℃, avoid 200–600℃ brittleness zone.

  • Annealing: 550–650℃ to relieve stress and restore ductility.

  • Post-Cold Working: Low-temperature annealing (200–300℃) to prevent stress corrosion.


FAQs

Q1: Differences between C4430 and C44300?

A: C44300 (ASTM) has higher Cu (69–71%) for extreme corrosion resistance, while C4430 focuses on cost-effectiveness.


Q2: Suitability for seawater?

A: Yes, but long-term exposure requires coatings and maintenance.


Standards

  • GB/T 14954-1994: Chinese tin brass standard1.

  • JIS H3300-2006: Japanese copper alloy tube standard8.

  • ASTM B111M: U.S. condenser and heat exchanger tube standard9


Start Your Partnership With JINTIAN COPPER!
Whether you have any questions about our products, please feel free to contact us, we will reply as soon as possible.
Related JINTIAN JIS
News from Ningbo Jintian Copper (Group) Co., Ltd
Honor | Jintian Copper Industry Selected Into The Second Batch Of National Intelligent Manufacturing Standard Application Pilot Projects
28
May 2025
Honor | Jintian Copper Industry Selected Into The Second Batch Of National Intelligent Manufacturing Standard Application Pilot Projects Learn More
The Copper Market Under the Blade of Trump's Tariffs: A Life-and-Death Struggle in the Global Supply Chain
15 May 2025
The Copper Market Under the Blade of Trump's Tariffs: A Life-and-Death Struggle in the Global Supply Chain Learn More
Why Do Cable Materials Prefer High-Purity Oxygen-Free Copper?
05 May 2025
Why Do Cable Materials Prefer High-Purity Oxygen-Free Copper? Learn More