
Size range
According to actual supply information, common specifications of C36000 copper tubes include:
Outer diameter and wall thickness combination: such as 60mm×5mm (outer diameter×wall thickness), 80mm×20mm, etc., belong to large-diameter thick-walled tubes.
Outer diameter range: covers 60mm to 80mm, which can be customized according to needs.
International standards
C36000 copper tubes mainly follow the following international standards:
ASTM standards:
ASTM B16: Standardizes the manufacturing requirements of free-cutting brass bars, rods and profiles, including chemical composition, mechanical properties (such as tensile strength ≥345-395MPa, elongation 7%-15%) and dimensional tolerances.
ASTM B88: Although it is mainly for copper tubes for water and gas transportation (such as K/L/M type), its provisions on copper tube wall thickness, outer diameter tolerance and pressure can provide reference for related applications.
European standards:
EN 12449: Applicable to general seamless round copper tubes, but the corresponding grade of C36000 is not clearly included in this standard and needs to be confirmed in combination with the specific alloy code.
Other standards:
WMD MS 13: Directly references ASTM B16, which specifies the straightness, heat treatment state (H02 semi-hard) and packaging requirements of C36000 copper tubes.
Main components:
Copper (Cu): 60.0%-63.0%
Zinc (Zn): As a balance, the content is about 32.5%-37.5%
Lead (Pb): 2.5%-3.7%, used to improve cutting performance
Iron (Fe): ≤0.35%
Other impurities (such as aluminum, phosphorus, sulfur, etc.): total ≤0.5%
Other trace components:
Aluminum (Al) ≤0.5%, used to strengthen the alloy
Sulfur (S), phosphorus (P), etc. ≤0.01%
Mechanical properties (by state)
Annealed state (O60)
Tensile strength: 330 MPa
Yield strength: 140 MPa
Elongation: 15-23%
Hardness: Brinell hardness (HB) about 80-90
Elastic modulus: 100 GPa
Shear strength: 210 MPa
Semi-hard state (H02)
Tensile strength: 360-395 MPa
Yield strength: 140-170 MPa
Elongation: 7-17%
Hardness: Brinell hardness (HB) about 90-100
Hard state (H04)
Tensile strength: 550 MPa
Yield strength: 310 MPa
Elongation: 4%
Hardness: Brinell hardness (HB) about 130
Other key properties
Fatigue strength: 135 MPa (hard state)
Impact toughness: Izod impact energy about 8 ft·lbf (11 J)
Shear modulus: 39 GPa
Poisson's ratio: 0.31-0.34



Q1:Do you provide samples? Is it free or extra?
A1:Yes, we can provide samples free of charge and the customer will pay the freight.
Q2:What if I don't have export experience ?
A2:We have reliable forwarder agent which can ship items to you by sea/air/Express to your doorstep. Any way, we will help you choose the most suitable shipping service.
Q3:How long is your lead time?
A3:If it is in stock, it is usually 5-10 days. Or, if there is no inventory, 15 days, depending on the quantity.
Q4:What are your terms of payment?
A4:30% T/T deposit in advance, 70% T/T balance within 5 days after B/L copy, 100%.Irrevocable L/C at sight, 100% Irrevocable L/C after receive B/L 30-120 days, O/A.
Q5:How is your technical support?
A5:We provide lifetime online support through Whatsapp/ Skype/ Wechat/ Email. Any problem after delivery, we will offer you call anytime.
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