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High-Quality Copper and Copper-Alloy Seamless Condenser Tubes from China Suppliers and Factory - ASTM B111/B111M Standards
Ordering Information
Orders must specify the following details:
- ASTM standard designation (B111 or B111M)
- Alloy UNS number
- Temper (e.g., annealed, as-drawn)
- Dimensions (OD, wall thickness, length)
- Quantity (total length or number of pieces)
- End finish (e.g., plain, beveled)
- Certification or test report requirements (if needed)
- Special packaging (if required)
Material Codes (UNS Alloys)
Common alloys include:
- Oxygen-free copper: C10200, C10800
- Phosphorus-deoxidized copper: C12000, C12200
- Admiralty brass: C44300, C44400, C44500
- Aluminum brass: C68700
- Cu-Ni alloys (90-10, 70-30): C70600, C71500
Chemical Composition
- Strict limits on copper, zinc, nickel, iron, lead, and other elements depending on the alloy
- Compliance with ASTM E478 or other approved test methods
Mechanical Properties
- Tensile strength, yield strength, and elongation requirements vary by alloy and temper (e.g., annealed vs. as-drawn)
- Examples:
- C12200 (annealed): Tensile strength ≥ 220 MPa (32 ksi), elongation ≥ 40%
- C71500 (as-drawn): Tensile strength ≥ 485 MPa (70 ksi), elongation ≥ 15%
Inspection and Testing Requirements
- Hydrostatic or nondestructive (NDT) testing: Each tube must be tested for leaks
- Flattening test: For annealed tubes (sample must not crack or split)
- Flaring test: For certain alloys/tempers
- Grain size test: For annealed copper tubes (ASTM E112)
- Certification: Manufacturer must provide test results certifying compliance
Dimensional Tolerances
- Outside diameter: ±0.1 mm (metric) or ±0.005 in (inch-pound)
- Wall thickness: ±10% of nominal thickness
- Length: ±3 mm for cut lengths
Surface Finish
- Tubes must be free of scale, cracks, and defects
- Minor imperfections allowed if within dimensional tolerances
Certification & Marking
Each tube must be marked with:
- Manufacturer's name or trademark
- Alloy designation
- Temper
- ASTM standard (B111/B111M)
- Certified test reports available upon request
Keywords
Copper alloy tubes
Condenser tubes
Seamless tubes
Ferrule stock
Heat exchangers
UNS alloys
Popular Material Codes Available
1. Pure and Low-Alloyed Copper
- C10200 – Oxygen-Free Copper (OF)
- C10300 – Oxygen-Free Copper, Extra Low Phosphorus
- C10800 – Oxygen-Free Copper with Silver
- C12000 – Phosphorus-Deoxidized Copper (DHP)
- C12200 – Phosphorus-Deoxidized Copper, DHP, with higher phosphorus
- C14200 – Arsenic-Bearing Phosphorized Copper
2. Brasses (Copper-Zinc Alloys)
- C19200 – Copper-Iron-Phosphorus alloy
- C23000 – Red Brass, 85% Cu
- C28000 – Muntz Metal, 60% Cu
- C44300 – Admiralty Brass, with 1% Sn + As/Sb
- C44400 – Admiralty Brass, with 1% Sn + P
- C44500 – Admiralty Brass, with 1% Sn + As
3. Aluminum Brasses
- C68700 – Arsenical Aluminum Brass
4. Copper-Nickel Alloys
- C60800 – Aluminum Bronze
- C61400 – Aluminum Bronze, with higher Fe
- C70400 – Copper-Nickel 5% Fe-Mn
- C70600 – Cu-Ni 90-10, Iron-Manganese modified
- C70620 – Cu-Ni 90-10, Enhanced Corrosion Resistance
- C71000 – Cu-Ni 80-20
- C71500 – Cu-Ni 70-30
- C71520 – Cu-Ni 70-30, Enhanced Corrosion Resistance
- C71640 – Cu-Ni 66-30-2-2, with Fe & Mn
- C72200 – Cu-Ni with Chromium
ⓘ Key Notes
- UNS (Unified Numbering System) codes are used for standardized alloy identification
- Some alloys (e.g., C44300, C68700, C71500) are commonly used in marine and power plant condensers due to corrosion resistance
- Temper (e.g., annealed, as-drawn) affects mechanical properties and must be specified in orders
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❓ Frequently Asked Questions (FAQ)
What is ASTM B111/B111M and what does it cover?
ASTM B111/B111M is the Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock. It covers seamless tubes made from various copper alloys used in heat exchangers, condensers, and similar equipment requiring high corrosion resistance and thermal conductivity.
Which copper alloys are most commonly used in ASTM B111 condenser tubes?
The most commonly used alloys include Admiralty Brass (C44300, C44400, C44500), Aluminum Brass (C68700), Copper-Nickel 90-10 (C70600), and Copper-Nickel 70-30 (C71500). These are preferred for marine and power plant condensers due to their excellent corrosion resistance.
What information is required when placing an order for ASTM B111 tubes?
Orders must specify the ASTM standard designation (B111 or B111M), alloy UNS number, temper, dimensions (OD, wall thickness, length), quantity, end finish, and any certification or special packaging requirements.
What testing and inspection methods are required under ASTM B111?
Each tube must undergo hydrostatic or nondestructive (NDT) testing for leak detection. Additional tests include flattening tests for annealed tubes, flaring tests for specific alloys/tempers, and grain size testing per ASTM E112. Manufacturers must provide certified test reports confirming compliance.
What are the dimensional tolerances specified in ASTM B111?
The standard specifies outside diameter tolerances of ±0.1 mm (metric) or ±0.005 in (inch-pound), wall thickness tolerances of ±10% of nominal thickness, and length tolerances of ±3 mm for cut lengths.
How does temper affect the mechanical properties of ASTM B111 tubes?
Temper significantly influences tensile strength, yield strength, and elongation. For example, C12200 in annealed temper has a minimum tensile strength of 220 MPa and elongation of 40%, while C71500 in as-drawn temper achieves a higher tensile strength of 485 MPa with elongation of 15%. Temper must always be specified when ordering.