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China JIS H 3300 Seamless Copper & Copper Alloy Pipes and Tubes - Reliable Suppliers & Factory Solutions
Ordering Information
When ordering, the following details must be specified:
- Standard designation (JIS H 3300)
- Material code (e.g., C1220, C6870)
- Dimensions (outer diameter, wall thickness, length)
- Temper designation (e.g., soft, hard, half-hard)
- Quantity
- Special requirements (e.g., surface finish, end treatment)
Material Codes and Alloys
Common material codes include:
- C1020 (Oxygen-free copper)
- C1220 (Phosphorus-deoxidized copper)
- C2801 (Brass: 60% Cu, 40% Zn)
- C4430, C6870 (Aluminum brass, Arsenic-added brass)
- C7060, C7150 (Copper-nickel alloys)
Each material has specified chemical composition limits per JIS H 3300.
Manufacturing Process
- Pipes/tubes are produced by extrusion, cold drawing, or rolling.
- Heat treatment (annealing) may be applied to achieve desired temper.
Dimensions and Tolerances
- Standard outer diameters, wall thicknesses, and lengths are specified.
- Tolerances for dimensions (OD, WT, straightness, etc.) are defined based on material and temper.
Mechanical Properties
Tensile strength, elongation, and hardness requirements vary by material and temper. Examples:
- C1220 (Soft) – Tensile strength ≥ 200 MPa, Elongation ≥ 40%
- C2801 (Hard) – Tensile strength ≥ 370 MPa, Elongation ≥ 15%
Inspection Requirements
- Chemical analysis (to verify composition)
- Mechanical tests (tensile, hardness)
- Hydrostatic or nondestructive testing (e.g., eddy current) for leak tightness
- Visual inspection (surface defects, scratches, dents)
- Dimensional checks (OD, WT, length)
Surface Condition
- Surfaces must be clean, free from cracks, and excessive imperfections.
- Minor scratches or discoloration may be allowed within limits.
Marking and Packaging
Each pipe/tube must be marked with:
- Manufacturer's name or trademark
- Material code
- Dimensions
- Heat number / batch identification
- Packaging must prevent damage during transit
Material Codes in JIS H 3300
1. Pure Copper (Copper ≥ 99.90%)
- C1020 – Oxygen-free copper
- C1100 – Electrolytic tough pitch copper (Cu ≥ 99.90%)
- C1220 – Phosphorus-deoxidized copper (Cu + Ag ≥ 99.90%)
2. Brass (Copper-Zinc Alloys)
- C2100 – 95% Copper Brass (Cu 84–86%, remainder Zn)
- C2200 – 90% Copper Brass (Cu 88–91%, remainder Zn)
- C2300 – 85% Copper Brass (Cu 84–86%, remainder Zn)
- C2400 – 80% Copper Brass (Cu 78.5–81.5%, remainder Zn)
- C2600 – 70% Copper Brass (Cu 68.5–71.5%, remainder Zn)
- C2680 – Yellow Brass (Cu 64–68%, remainder Zn)
- C2700 – 65% Copper Brass (Cu 63–68.5%, remainder Zn)
- C2720 – Common Brass (Cu 62–64%, remainder Zn)
- C2801 – 60% Copper Brass (Cu 58–61%, remainder Zn)
3. Leaded Brass (Free-Cutting Brass)
- C3140 – Leaded Brass (Cu 87–90%, Pb 1.3–2.5%, remainder Zn)
- C3501 – Leaded Brass (Cu 60–63%, Pb 1.3–2.5%, remainder Zn)
- C3604 – Free-Cutting Brass (Cu 57–61%, Pb 1.8–3.7%, remainder Zn)
4. Tin Brass & Special Brass
- C4430 – Admiralty Brass (Cu 70–73%, Sn 0.8–1.2%, Zn + As remainder)
- C4621 – Naval Brass (Cu 60–63%, Sn 0.5–1.0%, Pb ≤ 0.2%, remainder Zn)
- C6870 – Aluminum Brass (Cu 76–79%, Al 1.8–2.5%, As 0.02–0.06%, remainder Zn)
5. Copper-Nickel Alloys
- C7060 – 90-10 Cu-Ni (Cu 86.5–90.5%, Ni 9–11%, Fe 1–1.8%, Mn ≤ 1.0%)
- C7150 – 70-30 Cu-Ni (Cu 63–70%, Ni 29–33%, Fe 0.4–1.0%, Mn ≤ 1.0%)
6. Other Copper Alloys
- C5111 – Phosphor Bronze (Cu + Sn 99.5%, P 0.03–0.35%)
- C5191 – Phosphor Bronze (Cu 93.5–95.5%, Sn 6–7%, P 0.1–0.25%)
- C7060, C7150 – Copper-Nickel (as above)
⚑ Key Notes
- The exact chemical composition limits are specified in JIS H 3300.
- Some alloys may have additional restrictions on impurities (e.g., Pb, Fe, Ni).
- Temper designations (e.g., soft, hard, half-hard) affect mechanical properties.
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Frequently Asked Questions (FAQ)
Q
What is JIS H 3300 and what does it cover?
JIS H 3300 is a Japanese Industrial Standard that specifies the requirements for copper and copper alloy seamless pipes and tubes. It covers material codes, chemical compositions, mechanical properties, dimensional tolerances, inspection methods, marking, and packaging requirements.
Q
What information is required when placing an order for JIS H 3300 pipes or tubes?
When ordering, you must specify the standard designation (JIS H 3300), material code (e.g., C1220, C6870), dimensions (outer diameter, wall thickness, length), temper designation (soft, hard, half-hard), quantity, and any special requirements such as surface finish or end treatment.
Q
What are the most commonly used material codes under JIS H 3300?
The most commonly used material codes include C1020 (oxygen-free copper), C1220 (phosphorus-deoxidized copper), C2801 (60% copper brass), C4430 (admiralty brass), C6870 (aluminum brass), C7060 (90-10 copper-nickel), and C7150 (70-30 copper-nickel).
Q
How are JIS H 3300 copper tubes manufactured?
Copper and copper alloy seamless pipes and tubes under JIS H 3300 are produced through extrusion, cold drawing, or rolling processes. Heat treatment such as annealing may also be applied to achieve the required temper designation and mechanical properties.
Q
What inspection and testing methods are applied to JIS H 3300 products?
Products are subject to chemical composition analysis, mechanical tests (tensile strength and hardness), hydrostatic or nondestructive testing (such as eddy current testing) for leak tightness, visual inspection for surface defects, and dimensional checks including outer diameter, wall thickness, and length.
Q
What are the mechanical property requirements for C1220 and C2801 under JIS H 3300?
For C1220 in soft temper, the minimum tensile strength is 200 MPa with a minimum elongation of 40%. For C2801 in hard temper, the minimum tensile strength is 370 MPa with a minimum elongation of 15%. Requirements vary depending on the material code and temper designation.