UNS Number: C37700
Common Name: Leaded Brass (CuZn38Pb2)
Corresponding Standards: ASTM B453 (Leaded Brass Rod/Bar), ASTM B121 (Leaded Brass Sheet/Strip), SAE J463, YS/T 649-2018.
Product Features of C37700 brass Heat Exchanger Tube
Superior Machinability: Enhanced by 1.5–2.5% lead content, ideal for high-speed CNC and automatic machining.
Good Corrosion Resistance: Resists atmospheric and freshwater corrosion but limited in saltwater or ammonia-rich environments.
Balanced Mechanical Properties: Combines tensile strength (260–655 MPa) with elongation (24–50%).
Thermal and Electrical Conductivity: Moderate thermal (121 W/m·K) and electrical conductivity (24–27% IACS).
Cost-Effective: Optimized for mass production due to lower copper content (58–61%).
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 – 150 |
|
Tube |
1.0 – 15.0 (wall) |
- |
Custom |
10 – 250 (OD) |
|
Wire |
- |
- |
Custom |
0.5 – 12 |
C37700 Brass Chemical Composition
|
Element |
Cu |
Zn |
Pb |
Fe |
Others |
|
Weight % |
58–61 |
Balance |
1.5–2.5 |
≤0.30 |
≤0.8 (total) |
Physical Properties of C37700 heat transfer equipment Copper Tube
|
Property |
Value |
|
Density (g/cm³) |
8.44–8.53 |
|
Melting Point (°C) |
895–940 |
|
Electrical Conductivity (%IACS) |
24–27 (Annealed) |
|
Thermal Conductivity (W/m·K) |
121 (at 20°C) |
Mechanical Properties of C37700 brass Tube for radiators
|
Condition |
Tensile Strength (MPa) |
Yield Strength (MPa) |
Elongation (%) |
Hardness (HV) |
|
Annealed |
260–440 |
100–200 |
35–50 |
75–100 |
|
Cold Worked (H02) |
450–550 |
350–450 |
15–25 |
120–160 |
|
Hard (H04) |
≥550 |
≥450 |
≥5 |
≥160 |
Core Advantages of C37700 brass Tube for coolers
1. Free-Machining: Lead lubrication reduces tool wear, enabling high-precision machining.
2. Versatility: Suitable for cold/hot forming, welding, and extrusion.
3. Durability: Resists wear in mechanical and low-corrosion environments.
4. Cost Efficiency: Lower copper content reduces material costs for industrial applications.
Product Applications of C37700 Thick Wall brass Tube
Marine Engineering: Seawater valves, heat exchangers, and ship fittings.
Automotive: Radiator cores, fuel system components, and stamped parts.
Plumbing: Low-pressure fittings, valve bodies, and couplings.
Electronics: Connectors, terminals, and shielding components.
Industrial Hardware: Gears, bushings, and fasteners.
Processing Considerations of C37700 Hollow Thin Wall brass Tube
Annealing: 600–650°C for 1–2 hours to restore ductility.
Machining: Use sharp carbide tools with lubricants to minimize heat generation.
Welding: Avoid overheating to prevent lead vaporization; TIG/MIG welding with inert gas shielding recommended.
Surface Treatment: Electroplating (e.g., nickel or chrome) for enhanced corrosion resistance.
Key Application Scenarios of C37700 Bare brass Pipe
Shipbuilding components requiring seawater corrosion resistance (with coatings).
High-volume automotive parts produced via CNC machining.
Electrical connectors in consumer electronics.
Industrial fasteners and hydraulic systems.
Types of products GNEE can provide
|
Product name |
Copper/brass/bronze pipe |
|
Material |
Copper,Pure Copper,Red Copper,Brass,Phosphor Bronze,Nickel-Copper |
|
Grade |
Copper:C11000 C10200 C1100 C1220 T2 CU-OF CU-SF |
|
Size |
Outside diameter 2-800mm; |
|
Hardness |
1/16 hard,1/8 hard,3/8 hard,1/4 hard,1/2hard,full hard |
|
Surface |
Polished,bright,oiled,hair line,brush,mirror,or as required |
|
Apllication |
Construction, industrial, decoration |
|
Service |
Custom service |
|
Price terms |
CFR,FOB,CIF,Ex-work,CNF |
|
Classification of copper materials |
copper wire, copper rod, copper strip, copper plate, copper tube, copper, bronze, phosphor bronze, materials include: H96 (C2100), |
|
Products name |
Copper/Brass/Bronze alloy Bar |
|
|
Material |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,C10930, C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,C12500,C14200, C14420,C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000,C26000, C27000,C27400,C28000,C33000,C33200,C37000,C44300,C44400,C44500,C60800, C63000,C65500,C68700,C70400,C70600,C70620,C71000,C71500,C71520,C71640, C72200,C86300,C83600,C95400,C95500,C95800, H59,62,H65,H68,H70,H80,H85,H90,H96, T1,T2,T3,TU1,TU0,TU2,TP1,TP2,TAg0.1,etc |
|
|
Size |
Thickness |
2mm-200mm or customized |
|
Width |
10mm-600mm or customized |
|
|
Length |
200mm-6000mm or customized |
|
|
Surface |
Mill,polished,bright,oiled,hair line,brush,mirror,sand blast,or as required. |
|
|
Application |
With high conductivity,copper flat bar can be widely used in: |
|
|
standard |
GB/T4423-2007,
JISH3250-2006, JISH3300-2006, |
|
|
Package |
Standard export package |
|
|
Description
|
copper plate/copper sheet
|
|
|
Other
Standards |
ASTM A276, A484, A479, A580, A582, JIS G4303, JIS G4311,
DIN 1654-5,DIN 17440,GB/T 1220 |
|
|
Material
|
Copper (C10200,C11000,C10100,C10200,C12000,)C11600,
Brass(C21000,C22000,C23000,C24000,C26000,C27000,C27200,C27400,C2800, C31400,C33000,C35600,C37100,C36000,C35300,C37100,C37700,C37710,C37000, C68700,C41100,C44300,C46200.C46400,C26130,C65600,) Bronze(C50500,C51100,C52100,C60800,C61000,C61900,C63010,C62300, C63000,C63280,C63020,C17200,C17000,C17500,C17510,C18200,C18100,C18200, C16200,C19400,C14500) Cupronickel(C70400,C71000,C71300,C71500,C70400,C70600,C75200,C77000, C75400,C79000,C79200) |
|
|
Specifications
|
thickness:0.1~20mm,width:1~2500mm
|
|
|
Price Term
|
EX-Work, FOB, CFR, CIF
|
|
|
Payment Term
|
T/T, L/C, Western Union
|
|
|
Delivery Time
|
According to customer' s quantity
|
|
|
Main Market
|
Europe,South America, Africa ,Oceania ,such as :
USA,Germany,India,.,Dubai,Iraq,Vietnam,Ireland,Singapore,etc |
|
|
Product name |
Copper Wire |
|
Grade |
C10100,C10200,C10300,C10400,C10500,C10700,C10800,C10910,C10920,C10930,C11000,C11300,C11400,C11500,C11600,C12000,C12200,C12300,C12500,C14200,C14420,C14500,C14510,C14520,C14530,C17200,C19200,C21000,C23000,C26000,C27000,C27400,C28000,C33000,C33200,C37000,C44300,C44400,C44500,C60800,C63020,C65500,C68700,C70400,C70620,C71000,C71500,C71520,C71640,C72200,T1,T2,T3,etc |
|
Standard |
JIS ASTM DIN EN ISO |
|
Diameter |
0.3-5mm/custom |
|
Length |
custom |
|
Surface |
mill,polished,bright,mirror,hair line,brush,checkered,antique,sand blast,etc |
|
Application |
Building, industry etc |
|
Payment Terms |
T/T or L/C at sight |
|
Delivery time |
5-15 days after receiving L/C or deposit |
|
Remark |
Specific requirement of alloy grade,temper or specification can be discussed at your request |
Copper CNC machined parts
|
Service Offer |
Cnc Machining/Turning/Milling, Sheet Metal Fabrication, Laser Cutting, Stamping, Bending, Spinning, Wire Cutting, Die Casting, Forging, Gear machining, etc. |
|
Materials |
Aluminum, Stainless Steel, Steel, Brass / Bronze / Copper, Titanium Alloy, Plastic, etc. |
|
Application Areas |
Auto parts, Automated Robots, Drones, Medical Equipment, Mechanical Hardware, Aerospace Military Industry, Electronic Equipment, Lighting Fixtures, 3C Digital Products, Household Appliances |
|
Tolerance |
+/-0.01 mm, Strict tolerance can reach +/-0.005 mm |
|
Processing Capabilities |
10000pcs/day |
|
Drawing Format |
STP, Solid Works, Pro/Engineer, Auto CAD(DXF,DWG), PDF, TIF etc. |
|
Surface treatment |
Anodizing, Hard anodizing, Gradual anodizing, Electro-plating, Electroless nickel, PVD, Painting, Powder coating, Teflon coating, Ceramic plating, Sandblasting, Brush, Mirror polish, etc. |
|
Testing equipment |
Three-coordinate measuring machine, 2.5 Dimension measuring instrument, inside micrometer, outside micrometer, electronic height gauge,Thread go and no-go gauges, external thread ring gauges, electronic calipers, pin gauges |
|
Project delivery |
1-10 days |
|
Product Packaging |
Inner packaging: foam, plastic, paper;
Outer packing: hard thick carton, customized wooden box |
|
Payment Methods |
T/T, L/C, Trade Assurance |
in exporting copper products
With 18 years of experience, we are a leading exporter of high-quality copper products. Our efficient production lines, featuring continuous casting rods, precision drawing, and automated annealing processes, ensure consistent quality. Combined with rigorous in-house testing, including spectral analysis and pressure tests, we guarantee that every copper tube, coil, and rod meets the highest international standards for global clients.
