C27450 DZR lead free brass hollow bars are the stock a plumbing drawing calls for when a valve, faucet or fitting body has to be forged or machined and then carry drinking water. C27450 is the UNS number of a low lead brass, and DZR stands for dezincification resistant. The lead is held to 0.25 per cent maximum. That is very low, but it is not zero, and it helps to know the difference before you order.
Amardeep Steel Centre supplies C27450 brass hollow bar from Mumbai, as a C27450 hollow bar supplier in India and for export buyers. Send the outside diameter, bore, length, temper and quantity on the enquiry page and Amardeep Steel Centre replies with what can be shipped and when.
Technical Data
C27450 Hollow Bar Specifications at a Glance
| Parameter | Detail |
|---|---|
|
Grade |
C27450, low lead brass for plumbing, sold as DZR lead free brass |
|
UNS designation |
C27450 |
|
Standards |
ASTM B927 for brass rod, bar and shapes, B124 for forging rod, bar and shapes, and B283 for die forgings, as listed for the grade |
|
Product forms |
Hollow bar and hollow rod supplied against your drawing |
|
Size range |
Outside diameter, bore and wall to your drawing. Send the sizes and we confirm. |
|
Length |
Random, fixed or cut to length |
|
Tempers |
As named on your drawing, confirmed at quotation |
|
Tolerance |
As per the standard on your order, or as agreed |
|
Lead content |
0.25 per cent maximum. Low lead, not zero lead. |
|
Testing and certificates |
Mill test certificate, type confirmed at quotation |
Chemical Properties of C27450 DZR Lead Free Brass Hollow Bars
| Element | UNS C27450 | Nominal |
|---|---|---|
|
Copper (Cu) |
60.0 to 65.0 |
About 63 |
|
Zinc (Zn) |
Remainder |
About 36 to 37 |
|
Lead (Pb) |
0.25 maximum |
None added |
|
Iron (Fe) |
0.35 maximum |
None added |
|
Copper plus named elements |
99.5 minimum |
Not applicable |
Mechanical Properties of C27450
| Property | Metric | Imperial |
|---|---|---|
|
Tensile strength |
About 434 MPa |
63 ksi |
|
Yield strength, 0.2 per cent offset |
About 324 MPa |
47 ksi |
|
Elongation |
About 25 per cent |
25 per cent |
|
Hardness |
About 68 HRB |
68 HRB |
Physical Properties of C27450 in SI Units
| Property | SI value | Imperial value |
|---|---|---|
|
Density |
8.44 g/cm3 at 20 degrees Celsius |
0.31 lb/in3 |
|
Liquidus |
About 915 degrees Celsius |
1680 F |
|
Coefficient of thermal expansion |
About 20.5 micrometres per metre per kelvin, 20 to 300 degrees Celsius |
11.4 millionths per F |
|
Thermal conductivity |
About 116 W/m K |
67 Btu per square foot per foot per hour per F |
|
Electrical conductivity |
27 per cent IACS |
27 per cent IACS |
|
Modulus of elasticity in tension |
About 103 GPa |
15000 ksi |
|
Modulus of rigidity |
About 39 GPa |
5600 ksi |
Where C27450 Hollow Bar Is Used
- Valve bodies: Bodies and stems forged or machined from hollow stock, with the bore already through.
- Faucet and plumbing parts: Faucet bodies, spouts and fittings for drinking water.
- Water meter parts: Meter bodies and connectors that carry potable water.
- Compression and push fit fittings: Fittings used with copper, plastic and PEX plumbing.
- Forged fittings and manifold blocks: Parts hot forged and then finished by machining.
- Threaded and turned parts: Inserts and connectors that need good thread rolling and machining.
If the duty involves seawater, 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 are C27450 DZR lead free brass hollow bars?
C27450 is a low lead plumbing brass with about 63 per cent copper and a lead limit of 0.25 per cent maximum, sold for drinking water and forged plumbing parts. Hollow bar is stock with a bore through it, used for machined and forged valve and fitting parts.
What does DZR mean for C27450?
DZR stands for dezincification resistant. In ordinary brass the zinc can leach out in some waters, leaving a weak, porous copper structure. C27450 is sold for resisting this, but resistance is proved by a dezincification test, so ask us for the test report if your drawing needs it.
Is C27450 lead free?
Strictly, no. C27450 is low lead, with a maximum of 0.25 per cent, which many drinking water rules treat as lead free by a weighted average on wetted surfaces. Rules differ by region and by finished part, so check yours. We make no compliance claim.
What is the difference between C27450 and C36000?
C36000 is free cutting brass with 2.5 to 3.7 per cent lead and no dezincification resistance, so it machines fastest but is not for drinking water. C27450 has 0.25 per cent lead maximum and rates about 70 on the same scale. Choose C27450 for water parts.
Is C27450 the same as CW507L or CW508L?
No exact match. C27450 is a UNS grade, and the European codes CW507L and CW508L describe nearby CuZn36 and CuZn37 type brasses with different limits. Check your drawing before substituting, and use C27450 on purchase orders. We compare the limits for you.
Which standards cover C27450 hollow bar?
C27450 is listed under ASTM B927 for brass rod, bar and shapes, B124 for forging stock and B283 for die forgings. Name the standard, temper and tolerance on your order so tests match your drawing, and we confirm what applies to hollow bar.
Looking to Enquire or Place an Order?
Tell Amardeep Steel Centre the size, the temper and the quantity, and what the part has to do. You get a price, a delivery date and a straight view on whether C27450 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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