Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of c37700 brass alloy 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.
C37700 (also known as CW617N / CuZn40Pb2) is one of the most widely used hot-forging brass alloys in valves, fittings, plumbing hardware, and high-precision machined components. Buyers searching for "C37700 brass rod supplier," "CW617N forging brass bar," "plumbing brass alloy," or "CuZn40Pb2 forged parts" typically require high mechanical strength, excellent hot workability, and reliable machinability. This product page provides complete specifications, chemical data, and global application insights for professional B2B procurement.
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High Quality
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Advanced Equipment
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Products Description
Material: C37700 (CW617N / CuZn40Pb2)
Type: Hot-forging Brass / Free-Cutting Brass
Forms: Rods, Bars, Billets, Profiles
Processes: Hot Forging • CNC Machining
Applications: Valves • Faucets • Fittings • Plumbing Components
Standards: ASTM B124 • EN 12165 • JIS H3250
Specifications (Metric & Imperial)
| Item | Metric | Imperial |
|---|---|---|
| Diameter (Rods/Bars) | 8–120 mm | 0.315–4.72 in |
| Length | 2,500–6,000 mm | 8.2–19.7 ft |
| Tolerance | h8 / h9 / h11 | As Request |
| Forms | Round / Hex / Square / Customized Profiles | - |
| Temper | As Forged / Stress Relieved | - |
Dimensional Tolerances:
Round bar: ISO h8–h11
Hex / Square bar: ±0.05–±0.15 mm
Chemical Composition (Typical %)
| Element | Content (%) |
|---|---|
| Cu | 57.0 – 59.0 |
| Pb | 1.6 – 2.5 |
| Fe | ≤ 0.30 |
| Al | ≤ 0.05 |
| Sn | ≤ 0.3 |
| Zn | Balance |
Mechanical Properties
| Property | Typical Value |
|---|---|
| Tensile Strength | 330–450 MPa |
| Yield Strength | ≥ 150 MPa |
| Elongation | 15–30% |
| Hardness | 80–120 HB |
| Density | 8.4 g/cm³ |
Product Features
1. Excellent Hot Forging Performance
C37700 provides superior formability at high temperature, making it ideal for valves, fittings, and precision forging parts.
2. High Machinability
Lead content improves chip control and reduces tool wear-perfect for CNC turning and drilling.
3. Good Corrosion Resistance
Stable Cu–Zn structure provides resistance to potable water, hot water, steam, and mild chemicals.
4. Strong Mechanical Properties
High strength after forging ensures long-term durability in pressured water systems.
5. Cost-Effective Alternative
Compared with lead-free brass, C37700 offers lower cost with high processing efficiency.
Products Applications
Valve bodies & faucet components
Plumbing fittings (elbows, tees, couplings, adapters)
Water meter parts
Gas fittings & HVAC connectors
Automotive forged parts
Hydraulic & pneumatic components
Inspection & Quality Assurance
Raw Material Control: Strict inspection on Cu, Zn, Pb levels
Spectrometer Analysis: 100% chemical composition verification
Dimensional Inspection: Diameter, tolerance, straightness measurement
Mechanical Testing: Tensile strength, hardness, elongation
Surface Quality Check: No cracks, folds, porosity
Third-Party Tests: SGS / BV / TUV available upon request
Full Traceability: Heat number + batch records for every order
Product Delivery Standards
Packaging: Seaworthy bundles, plastic wrap, anti-rust paper
Loading: Wooden pallets / steel pallets for container reinforcement
Lead Time: 7–25 days depending on order size and machining level
MOQ: Flexible for sizes in stock
Export-Ready Documents: CO, BL, Packing List, Invoice, Form A/E/F, EN10204 3.1
Looking for a reliable supplier of C37700 / CW617N Forging Brass?
Our team provides stable quality, on-time delivery, and full technical support for global buyers in plumbing, valves, HVAC, and precision forging industries.
Our address
Room 4107, Runfeng Building, Sanqiao New Street, Weiyang District, Xi'an City, Shaanxi Province
Phone Number
+86 15769214734
FAQ
Q1: What is C37700 brass mainly used for?
C37700 (CW617N / CuZn40Pb2) is primarily used for hot-forged plumbing components, including valves, faucets, connectors, and gas fittings. Its excellent forgeability and machinability make it ideal for mass-production of precision components.
Q2: Is C37700 a forging brass or a machining brass?
It is classified as a hot-forging brass, but due to its lead content, it also provides good machinability after forging. This dual advantage makes it suitable for CNC machining and drilling operations.
Q3: What is the difference between C37700, CW617N, and CuZn40Pb2?
These names refer to the same alloy under different international standards:
C37700 – ASTM
CW617N – EN/European Standard
CuZn40Pb2 – Chemical designation
All share the same chemical composition and performance.
Q4: Is C37700 brass safe for drinking water applications?
Yes, it is widely used for potable water fittings.
However, for strict low-lead or lead-free regulations (e.g., NSF/ANSI 61, EU potable water rules), buyers may consider CW617N-LF, C69300, or C27200 low-lead alternatives. We can also supply low-lead versions upon request.
Q5: What is the typical lead content of C37700? Why is it important?
C37700 contains 1.6–2.5% Pb, which enhances chip breakability and improves CNC machinability. The lead also acts as a lubricant during forging, reducing tool wear.
Q6: How does C37700 perform during hot forging?
It has excellent hot formability in the temperature range of 650–800°C, offering:
Smooth metal flow
High forging efficiency
Good die filling
Stable mechanical properties after forging
This is why it is preferred for complex shapes like valve bodies and plumbing fittings.
Q7: What machining operations is C37700 suitable for?
It supports:
CNC turning
Drilling
Milling
Threading
Reaming
Slotting
Its machinability is better than many low-lead brasses.
Q8: What is the corrosion resistance of C37700 brass?
C37700 provides good resistance against:
Potable water
Hot water and steam
Mild acids
Neutral saline environments
This makes it reliable for plumbing and HVAC systems.
Q9: Does C37700 contain any elements of concern for global regulations?
Lead (Pb) is the primary element monitored. For markets sensitive to lead (EU, USA, Australia), we offer:
Low-lead options
Lead-free brass grades
RoHS/REACH compliant materials
SGS test reports can be provided.
Q10: What tolerances can you achieve for C37700 rods and bars?
Round bar: ISO h8 / h9 / h11
Hex / square bar: ±0.05–±0.15 mm
Custom tolerances according to drawings are accepted.
Q11: Can you provide forging and machining services?
Yes. We offer:
Hot forging
CNC machining
Thread cutting
Polishing
Deburring
Surface finishing (nickel plating, chrome plating, etc.)
OEM/ODM orders are welcome.
Q12: What quality inspections are performed on C37700?
Spectrometer chemical analysis
Tensile test / hardness test
Dimensional accuracy check
Surface inspection (cracks, folds, pits)
Metallographic examination
Third-party inspection (SGS / TUV / BV)
Q13: What is your typical lead time for C37700 orders?
In-stock sizes: 7–10 days
Forging / machining orders: 15–30 days
Delivery time may vary depending on order volume and customization level.
Q14: Do you support customized brass components based on drawings?
Absolutely. We can produce valve bodies, fittings, machined parts, and special-shaped forgings strictly according to 2D/3D drawings and technical requirements.
Q15: What documents can you provide for export?
CO, Invoice, Packing List, BL
Form A/E/F/P Certificates
EN10204 3.1 Mill Test Report
SGS/BV/TUV inspection reports
Perfect for customs clearance and supplier audits.
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