Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of c69800 lead-free manganese brass in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
C69800, also known as CW409R / CuZn40Mn3Al2, is a high-strength, lead-free manganese brass designed for drinking water fittings, valves, HVAC components, and high-load mechanical parts. With excellent dezincification resistance (DZR), superior stress corrosion cracking resistance, and enhanced mechanical strength, C69800 is ideal for industrial and sanitary applications requiring lead-free compliance. It is available in round bars, rods, billets, hollow bars, and custom forged components and is widely used by buyers searching for "C69800 lead-free brass supplier", "CW409R DZR brass rod", or "high-strength manganese brass for potable water".
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High Quality
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Advanced Equipment
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Professional Team
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Custom Service
Products Description
Material: C69800 Brass (CW409R / CuZn40Mn3Al2)
Type: Lead-Free High Strength Brass / DZR Brass
Forms: Rod • Bar • Hollow Bar • Forging Stock • Custom Profiles
Key Features: Lead-Free, DZR, High Strength, SCC Resistant
Applications: Drinking Water Valves • Plumbing Fittings • HVAC • Automotive Components
Standards: ASTM B371, EN 12165, NSF/ANSI 61 & 372
Specifications (Metric & Imperial)
| Product Form | Metric Size | Imperial Size | Typical Tolerance |
|---|---|---|---|
| Round Bar | Ø10–150 mm | Ø0.394–5.91 in | h8 / h9 |
| Hex Bar | 10–100 mm | 0.394–3.94 in | ±0.05–0.20 mm |
| Square Bar | 10–100 mm | 0.394–3.94 in | ±0.05–0.20 mm |
| Hollow Bar | Ø20–180 mm | Ø0.79–7.09 in | OD ±0.15 mm / ID ±0.25 mm |
| Forging Stock | Custom | Custom | As per drawing |
Chemical Composition (Typical %)
| Element | Content (%) |
|---|---|
| Cu | 57–61 |
| Zn | Balance |
| Mn | 2.5–4.0 |
| Al | 1.5–3.0 |
| Pb | ≤0.09 |
| Fe / Others | ≤0.3 |
Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 520–680 MPa |
| Yield Strength | 320–420 MPa |
| Elongation | 12–25% |
| Hardness | 120–185 HB |
| Density | 8.4 g/cm³ |
Product Features
1. Lead-Free & Drinking Water Safe
Compliant with NSF/ANSI 61 & 372, EU, and US potable water regulations.
2. High Strength & DZR Resistance
Ideal for high-pressure plumbing valves, manifolds, and HVAC components.
3. Excellent Stress Corrosion Cracking (SCC) Resistance
Reliable in aggressive water conditions and long-term service.
4. Superior Machinability & Forgeability
Supports CNC machining, threading, drilling, and hot forging processes.
5. Environmentally Compliant Alloy
Safe for drinking water, food-contact components, and green building systems.
Typical Applications
Drinking water valves & fittings
Manifolds & plumbing connectors
HVAC components & gas connectors
Automotive hydraulic parts
Precision forged components
High-strength fasteners & nuts
Inspection & Quality Assurance
Chemical Composition Analysis: Spectrometer verification
Mechanical Testing: Tensile, hardness, elongation
Dimensional Inspection: Diameter, straightness, tolerances
Surface Inspection: Free from cracks, folds, porosity, oxidation
Third-Party Testing: SGS / TUV / BV available
Traceability: Full heat number and batch records
Product Delivery Standards
Packaging: Kraft paper + PVC film + seaworthy wooden pallets
Lead Time: 10–25 days depending on specification
Export Documents: CO, Packing List, Invoice, Form A/E/F, EN10204 3.1 MTC
Shipping: FOB / CIF / DAP / Door-to-Door supported
Looking for a reliable C69800 manganese brass supplier for potable water and high-strength applications?
We provide stable quality, fast delivery, and full technical support.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
Q1: Is C69800 fully lead-free?
Yes. Lead content ≤0.09%, fully compliant with NSF/ANSI 61 & 372, EU, and US drinking water standards.
Q2: How does C69800 differ from C69500 or C69310?
C69800: Higher manganese and aluminum content, higher tensile strength and DZR resistance.
C69500: Slightly lower strength, still lead-free and DZR resistant.
C69310: Lead-free, excellent machinability, moderate strength.
Q3: Can C69800 be used in high-pressure plumbing systems?
Yes. Its high tensile strength and corrosion resistance make it ideal for valves, fittings, and manifolds.
Q4: Does it have good machinability?
Yes. Despite being lead-free, it is suitable for CNC machining, drilling, threading, and forging.
Q5: What forms are available?
Round bars, hex/square bars, hollow bars, billets, and custom forged shapes.
Q6: Are custom OEM sizes available?
Yes. We provide tailor-made rods, bars, and forged components according to drawings and specifications.
Q7: Can you provide certifications?
Yes. EN10204 3.1 MTC, chemical and mechanical reports, SGS/TUV/BV inspection available.
Q8: Typical applications?
Drinking water valves, HVAC systems, automotive connectors, high-strength plumbing fittings, and precision forged components.
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