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ASTM B111/B111M - Standard Specification for Copper and Copper-Alloy Seamless Condenser Tubes and Ferrule Stock
Ordering Information
Orders must specify:
● - 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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