C44300 navy brass Plate/Sheet
C44300 is Admiralty Brass, containing a small amount of tin and arsenic, which significantly improves its seawater corrosion resistance. It has good cutting performance, can withstand cold and hot pressure processing, and is easy to weld and braze.

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Parameter
Chemical Composition
Mechanical Properties

Detailed size range

Thickness:


Common thicknesses are 1mm, 2mm, 4mm depending on product specifications.

Other standards (such as BS EN 13599:2014) allow a wider range, covering 0.05mm to 25mm, depending on application requirements.

Width and length:


Standard widths range from 10mm to 1250mm (reference BS EN standards).

Some plates are fixed at 500mm in length and vary in width from 10mm to 200mm (common specifications, which may include C44300).

Tolerance requirements:


Thickness deviation must comply with Table 2 of the ASME specification.

Flatness tolerance varies according to plate length, such as arc depth ≤1.3mm when length ≤1000mm.

International standards

ASTM standards:


ASTM B111/B 111M: Applicable to C44300 seamless copper tube (tube standard, here for reference only).

ASTM B series: clearly specifies the chemical composition, mechanical properties and dimensional requirements of C44300 plates, suitable for pressure vessels and heat exchangers.

ASME standards:


ASME Boiler and Pressure Vessel Code (BPVC): covers the mechanical properties and thickness tolerances of C44300 in hot rolled (M20) and annealed (O25) states.

European standards:


BS EN 13599:2014: specifies the composition, electrical properties and dimensional tolerances of copper plates (thickness 0.05-25mm, width 10-1250mm), suitable for electrical purposes.

Other standards:


ISO standards: such as ISO m-2004 and B171m-2004, used for the processing and acceptance of naval brass.

GB/T 5231-2012: The corresponding grade in the Chinese standard is HSn70-1, which specifies the chemical composition of processed copper alloys.


Copper (Cu): 69.0% - 73.0% (most literature supports 69.0% - 71.0%, but some standards such as EN give 70.0% - 73.0%).


Tin (Sn): 0.8% - 1.3%, used to enhance corrosion resistance.

Zinc (Zn): Balance, usually 25% - 29%.

Arsenic (As): 0.02% - 0.06%, inhibits dezincification corrosion.

Impurities: Lead (Pb) ≤ 0.05%, Iron (Fe) ≤ 0.10%, Nickel (Ni) ≤ 0.5%, Total impurities ≤ 0.3%.



Alloy GradeConditionTensile Strength (MPa)Yield Strength (MPa)Elongation (%)Hardness (HV)
C44300Annealed (O)290 - 360105 - 165≥4055 - 75
C44300Quarter - Hard (H01)340 - 420215 - 275≥3075 - 95
C44300Half - Hard (H02)380 - 490275 - 345≥2090 - 110
C44300Hard (H04)430 - 530345 - 415≥12105 - 125
C44300Extra - Hard (H08)490 - 600415 - 485≥8120 - 140

Physical Properties

Density: 8.53 g/cm³ (most sources), 8.3 g/cm³ in some sources.

Melting Point: Liquidus 940°C (1720°F), Solidus 900°C (1650°F).

Thermal Conductivity: 64 - 110 W/m·K.

Electrical Conductivity: 25% - 28% IACS (International Annealed Copper Standard).




INTRODUCTION

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FAQ

Q1:Do you provide samples? Is it free or extra?
A1:Yes, we can provide samples free of charge and the customer will pay the freight.
Q2:What if I don't have export experience ?
A2:We have reliable forwarder agent which can ship items to you by sea/air/Express to your doorstep. Any way, we will help you choose the most suitable shipping service.
Q3:How long is your lead time?
A3:If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.
Q4:What are your terms of payment?
A4:30% T/T deposit in advance, 70% T/T balance within 5 days after B/L copy, 100%.Irrevocable L/C at sight, 100% Irrevocable L/C after receive B/L 30-120 days, O/A.
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