C36000 Brass

Grade Name

UNS Number: C36000
Common Name: Free-Cutting Brass (CuZn36Pb3)
Corresponding Standards: ASTM B453 (Leaded Brass Rod/Bar), ASTM B121 (Leaded Brass Sheet/Strip), SAE J463.

Product Features

Superior Machinability: High lead content (2.5–3.7%) ensures excellent chip-breaking and minimal tool wear.
Good Corrosion Resistance: Suitable for indoor and mild outdoor environments.
Balanced Strength and Ductility: Tensile strength up to 550 MPa with elongation up to 25%.
Cost-Effective: Optimized for high-volume machining applications.
Thermal Conductivity: Suitable for low-stress heat exchange components.

Common Product Forms & Dimensions

Form	Thickness (mm)	Width (mm)	Length (mm)	Diameter (mm)
Sheet/Strip	0.3 – 6.0	50 – 600	Custom	-
Rod/Bar	-	-	Custom	3 – 100
Wire	-	-	Custom	0.5 – 12
Tube	1.0 – 15.0 (wall)	-	Custom	10 – 250 (OD)
Note: Custom dimensions are available upon request.

C36000 Brass Chemical Composition

Element	Cu	Zn	Pb	Fe	Others
Weight %	60.0–63.0	Balance	2.5–3.7	≤0.35	≤0.5 (total impurities)
Complies with ASTM B453 and SAE J463 standards.

C36000 Brass Material Properties

C36000 Brass Physical Properties

Property	Value
Density (g/cm³)	8.50
Melting Point (°C)	885–900
Electrical Conductivity (%IACS)	26 (Annealed)
Thermal Conductivity (W/m·K)	115 (at 20°C)
Values may vary with processing conditions.

C36000 Brass Mechanical Properties

Condition	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)	Hardness (HV)
Annealed	340–420	125–200	25–50	70–100
Cold Worked (H02)	450–550	350–450	10–20	120–160
Hard (H04)	≥550	≥450	≥5	≥160
Data applies to standard thicknesses and processing states.

C36000 Material Core Advantages

1. Free-Machining: Ideal for high-speed CNC and automatic lathe operations.

2. Dimensional Stability: Maintains precision under high-volume production.

3. Corrosion Resistance: Performs well in dry and mildly humid environments.

4. Cost Efficiency: Lowers manufacturing costs due to reduced tool wear and fast machining.

Product Applications

Automotive: Fuel injectors, fittings, and hydraulic components.
Electronics: Connectors, terminals, and shielding parts.
Plumbing: Valve bodies, faucet cartridges, and pipe fittings.
Industrial: Gears, bushings, and fasteners.
Consumer Goods: Decorative hardware, zippers, and locks.

Processing Considerations

Machining: Use sharp carbide tools with lubricants to minimize heat generation.
Annealing: 425–600°C for 1–2 hours to restore ductility after cold working.
Welding: Not recommended due to lead vaporization; use mechanical fastening instead.
Surface Treatment: Electroplating (e.g., nickel or chrome) for enhanced corrosion resistance.

Key Application Scenarios

High-precision automotive components requiring tight tolerances.
Plumbing systems in residential and commercial buildings.
Electrical connectors in consumer electronics.
Mass-produced industrial fasteners and gears.

FAQs

Q1: Is C36000 compliant with RoHS or drinking water standards?

A: No, due to its lead content, C36000 is restricted under RoHS and NSF/ANSI 61 for potable water.

Q2: How does C36000 compare to C3602 brass?

A: C3602 has similar properties but stricter lead control (3.0–3.7% vs. 2.5–3.7% in C36000).

Q3: Can material C36000 be recycled?

A: Yes, but lead requires specialized recycling to meet environmental regulations.

Standard References

Standard	Description
ASTM B453	Leaded brass rod, bar, and shapes.
ASTM B121	Leaded brass sheet and strip.
SAE J463	Mechanical property standards for wrought copper alloys.
ISO 426-1	Wrought copper-zinc-lead alloys (CuZnPb).

Note: Specifications may vary slightly depending on manufacturer and processing methods. Always consult technical datasheets for critical applications.

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