.webp "C26000 70/30 Lead Free Brass Pipe (Cartridge Brass)")
C26000 70/30 lead free brass pipe is the brass for parts that have to be drawn, bent and flared without cracking. It is cartridge brass, about 70 parts copper to 30 parts zinc, written CuZn30 on European drawings, and the soft, ductile nature of that mix is the reason it was first drawn into cartridge cases.
Amardeep Steel Centre supplies C26000 brass pipe and C26000 brass tube from Mumbai, as a C26000 brass pipe supplier in India and for export buyers. Send the outside diameter, wall thickness, length, temper and quantity on the enquiry page and Amardeep Steel Centre replies with what can be shipped and when.
Technical Data
C26000 Brass Pipe Specifications at a Glance
| Parameter | Detail |
|---|---|
|
Grade |
C26000, 70/30 cartridge brass, CuZn30 |
|
UNS designation |
C26000, also written CDA 260 |
|
Standards |
ASTM B135 for seamless brass tube, ASTM B587 for welded brass tube, ASTM B111 for condenser and ferrule tube |
|
Product forms |
Round pipe and tube supplied against your drawing |
|
Size range |
Outside diameter and wall thickness to your drawing. Send the sizes and we confirm. |
|
Length |
Random, fixed or cut to length |
|
Tempers |
OS025, OS050, H55, H58 and H80 on request, confirmed at quotation |
|
Tolerance |
As per the standard on your order, or as agreed |
|
Lead content |
0.07 per cent maximum. No lead is added. |
|
Testing and certificates |
Mill test certificate, type confirmed at quotation |
Chemical Composition of C26000 Lead Free Brass Pipe
| Cu | Fe | Pb | Zn | |
|---|---|---|---|---|
|
Min/Max |
68.5 - 71.5 |
0.05 |
0.07 |
Rem |
|
Nominals |
70.0000 |
30.0000 |
Physical Properties of C26000 in SI Units
| Property | SI value | Imperial value |
|---|---|---|
|
Density |
8.53 g/cm3 |
0.308 lb/in3 at 68 F |
|
Melting range |
916 to 954 degrees Celsius, solidus to liquidus |
1680 to 1750 F |
|
Coefficient of thermal expansion |
About 20 micrometres per metre per kelvin, 20 to 300 degrees Celsius |
11.1 millionths per F, 68 to 572 F |
|
Thermal conductivity |
About 121 W/m K at 20 degrees Celsius |
70 Btu per foot per hour per F |
|
Electrical conductivity |
28 per cent IACS at 20 degrees Celsius |
28 per cent IACS at 68 F |
|
Electrical resistivity |
About 0.0615 micro ohm metre |
37.0 ohm circular mil per foot |
|
Specific heat |
About 377 J/kg K |
0.09 Btu per pound per F |
|
Modulus of elasticity in tension |
About 110 GPa |
16000 ksi |
|
Modulus of rigidity |
About 41 GPa |
6000 ksi |
Equivalent Grades and Standards for CuZn30 Brass Tube
| System | Designation | Note |
|---|---|---|
|
UNS |
C26000, also written CDA 260 |
Primary designation |
|
ASTM |
B135 seamless tube, B587 welded tube, B111 condenser and ferrule tube |
Product standards for tube |
|
EN |
CW505L, CuZn30 |
Nearest match, not identical. Check the limits. |
|
ISO |
CuZn30 |
Composition name for 70/30 brass |
|
BS |
CZ106, from BS 2871 |
Nearest match |
|
DIN |
CuZn30, 2.0265 |
Nearest match |
|
JIS |
C2600 |
Nearest match |
|
IS |
IS 407, CuZn30 |
Nearest match |
Application of C26000 70/30 Lead Free Brass Pipe
- Heat exchanger and condenser tube: Tube for cooling water that has been checked, where the brass needs to bend, flare and braze.
- Sugar plant evaporators: Evaporator and heat exchanger tube, after the juice and cleaning method are reviewed. Tell us if your drawing asks for arsenical CuZn30As.
- Automotive radiator tubing: Tube drawn and formed into cores and tanks.
- Plumbing and HVAC: Fittings, traps and refrigeration assemblies that are joined by soldering or brazing.
- Instrumentation and hydraulic fittings: Small bore tube that is flared, bent and fitted.
- Drawn and cold formed parts: Sleeves and shells that are deep drawn from tube.
If the duty involves seawater or fast cooling water, this is the wrong page. See our admiralty brass seamless tube, aluminium brass seamless tube and copper nickel 90 10 pipes and tubes ranges.
Frequently Asked Questions
What is C26000 70/30 lead free brass pipe?
C26000 is cartridge brass, a brass with about 70 per cent copper and 30 per cent zinc, also written CuZn30. It is sold as lead free because no lead is added and the limit is 0.07 per cent maximum. It is supplied as pipe and tube for heat exchangers, plumbing, radiator parts and drawn components.
Is C26000 really lead free?
No lead is added to the alloy, and ASTM B135 limits lead to 0.07 per cent maximum. Whether that counts as lead free for drinking water use depends on your region and certification. Ask us for the lead content on the certificate and check it against your own regulations.
What is the difference between C26000 and 63/37 brass?
C26000 has 68.5 to 71.5 per cent copper, while the 63/37 grades such as C27200 and C27400 have about 62 to 64. The higher copper makes 70/30 softer and more ductile, and the best of the group for deep drawing and bending. The 63/37 grades hot form more readily and cost less.
Is C26000 the same as CuZn30As or CW505L?
No. C26000 has no arsenic requirement. CuZn30As is arsenical brass, with 0.02 to 0.06 per cent arsenic added to resist dezincification, and it is a separate grade. CW505L is the nearest European match to C26000 and is a close match, not identical. Check the limits before substituting.
Is C26000 suitable for drinking water or seawater?
Not for seawater. Cartridge brass has less zinc than 63/37 brass, so it resists dezincification better, but it has no inhibitor and can still lose zinc in aggressive water. For drinking water, check the finished part's certification. For seawater, ask us for admiralty brass, aluminium brass or copper nickel.
Which standards and tempers apply to C26000 tube?
ASTM B135 covers seamless brass tube including C26000, and B587 covers welded tube. B111 is for condenser and ferrule tube. Tempers use codes such as OS025 and OS050 for annealed and H55, H58 and H80 for drawn. Name the standard and temper on your order so tolerances and tests match your drawing.
Looking to Enquire or Place an Order?
Tell Amardeep Steel Centre the size, the temper and the quantity, and what the tube has to do. You get a price, a delivery date and a straight view on whether C26000 is the right brass for the job, and if it is not, we say so. You can attach your drawing to the enquiry.
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