C36000 Free-Cutting Brass

C36000 Free-Cutting Brass

60–63%
Copper Content
Excellent
Machinability
H02/H04/H06
Temper
C36000 brass, also known as Free-Cutting Brass, is a leaded copper-zinc alloy designed for excellent machinability and high-speed precision machining. It is widely used in CNC parts, fittings, fasteners, valves, and industrial components requiring stable dimensional accuracy.
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Lead Time: 3-5 Business Days

Product Overview

C36000 brass, commonly referred to as Free-Cutting Brass, is one of the most widely used brass alloys for precision machining applications. With controlled lead content and balanced copper-zinc composition, it provides excellent chip formation, smooth cutting performance, and reliable dimensional stability.

Produced through extrusion, drawing, and precision processing, C36000 brass is highly suitable for high-volume CNC machining and automatic screw machine operations. Its excellent machinability helps reduce tool wear, improve production efficiency, and maintain consistent surface quality.

C36000 brass is extensively used in fittings, valves, fasteners, threaded components, connectors, and precision machined parts. It is widely applied across plumbing, automotive, electrical, instrumentation, and general industrial manufacturing industries.

Key Features

Excellent machinability for CNC and screw machining
Good dimensional stability
Smooth surface finish after machining
Good corrosion resistance in general environments
Suitable for high-volume production
Reliable mechanical strength

Available Sizes

Copper Shape Thickness (mm) Width/Diameter (mm) Length (m)
Bar - Φ5-200 1-6
Wire - Φ0.05-10 Customize
Sheet 0.25-6 500-2500 1-6
Plate 6-200 200-3000 1-6
Strip 0.15-6 8-610 Customize
Tube OD: φ2-600; WT:φ0.2-100mm - 1-6
Coil 0.15-6 3-1250 1-6
Foil < 0.15 10-1350 Customize
Profile Customized Customize Customize

* Custom sizes available upon request. Contact our sales team for special requirements.

Technical Specifications

Precision data for engineering decisions. All values tested per ASTM standards.

01 Material Properties

Specification Value Notes
Cu Content 60-63% Free-cutting brass composition
Pb Content 2.5–3.7% Improves machinability
Zn Content Remainder Balanced mechanical properties
Density 8.50 g/cm³ Typical value
Electrical Conductivity ~26% IACS Based on temper
Tensile Strength 340–470 MPa Depends on temper
Elongation ≥ 20% Typical annealed/extruded condition
Available Tempers H02 / H04 / H06 Custom temper optional
Fabrication CNC Machining / Turning / Threading Excellent chip control
ASTM Standard ASTM B36 / ASTM B134 EN & JIS available

Applications & Use Cases

Proven solutions across diverse industries. From aerospace to marine environments.

Frequently Asked Questions

Find answers to common questions about C36000 free-cutting brass composition, machinability, and compliance.

C36000 (free-cutting / free-machining brass, CuZn36Pb3) contains Cu 60-63%, Pb 2.5-3.7%, Zn balance, and Fe up to 0.35%. It is specified to ASTM B16 for rod, bar, and shapes; the EN equivalent is CW603N (CuZn36Pb3).
Its lead content produces self-breaking chips and excellent surface finish, giving it a machinability rating of 100 - the reference all other copper alloys are rated against. It is the standard grade for high-speed automatic screw machines.
In common tempers, C36000 tensile strength ranges about 340-470 MPa, yield strength 125-310 MPa, elongation 7-53% depending on temper, with hardness around 78 HRB (half-hard). Density is about 8.49 g/cm3 and electrical conductivity about 26% IACS.
Fusion welding is not recommended; use brazing or soldering instead. Because it contains lead, it is not a potable-water grade in many regions. It qualifies for the RoHS Lead Exemption 6(c) (currently valid to June 2027), so it remains usable in specified machined components - confirm the current exemption status for your market.
Linsy supplies C36000 free-cutting brass as rod, bar, and shapes to ASTM B16 on a made-to-order basis, with a standard lead time of 10-60 days depending on size and quantity and low MOQ for custom lengths. Every order ships with an MTR / MTC, SGS reports are available on request, and RoHS / REACH documentation is provided. Quotes are typically returned within 1 hour, with responses within 24 hours.
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