DZR Brass Casting – Dezincification Resistant Brass Castings
Cable Glands India manufactures DZR brass castings, the dezincification resistant brass alloy used for potable water valves, plumbing fittings, water meter bodies, and tap bodies where long-term corrosion resistance in mains water is required. DZR brass is an arsenic-inhibited copper-zinc casting alloy supplied to EN 1982 CC750S and related national specifications, selected by plumbing fitting manufacturers, valve OEMs, and water utility contractors because standard yellow brass is prone to selective zinc dissolution in aggressive waters while DZR brass resists this failure mode. Our foundry controls arsenic addition, melt chemistry, and casting process to deliver DZR brass castings that pass dezincification testing and machine to finished plumbing components.
Price: US$ 15.90 per kilogram | Custom pricing available for bulk and OEM orders
Product Overview
What DZR Brass Is
DZR brass, short for dezincification resistant brass, is a copper-zinc casting alloy with a small controlled addition of arsenic that inhibits the selective leaching of zinc from the alloy matrix in contact with aggressive water. This gives DZR brass castings a substantially longer service life than standard leaded brass in potable water and underground plumbing applications where dezincification would otherwise cause porous, weakened fittings.
DZR Brass Sand Casting
Sand casting is used for larger DZR brass valve bodies and fitting blanks in low to medium production volumes, with mould and gating design controlled to minimise porosity in pressure-retaining sections that will later be hydrostatically tested.
DZR Brass Investment Casting
Investment casting is offered for smaller, more intricate DZR brass components such as valve trim, tap bodies, and fitting inserts where close as-cast tolerance reduces machining allowance and preserves the corrosion-resistant surface layer.
DZR Green Sand Casting
Green sand casting supports medium volume DZR brass fittings and valve components where reusable pattern equipment and efficient mould turnaround provide competitive per-piece pricing for plumbing fitting programs.
DZR Brass Centrifugal Casting
Centrifugal casting produces cylindrical DZR brass blanks such as valve body preforms and bushings with directional solidification that supports the dense, low-porosity structure needed for pressure-tight potable water components.
DZR Brass Permanent Mold Casting
Permanent mold casting is applied to higher volume DZR brass fittings and connector bodies where a reusable metal mould improves dimensional repeatability and surface finish for recurring plumbing fitting production runs.
DZR Brass Resin Sand Shell Molding / Casting
Resin sand shell moulding is used for DZR brass components requiring improved surface finish and dimensional accuracy over conventional sand casting, reducing machining stock on valve bodies and fitting blanks.
Typical Products Cast in DZR Brass
Cable Glands India casts DZR brass into potable water valve bodies, stopcocks and ball valve bodies, water meter housings, tap and faucet bodies, underground plumbing fittings, pipe couplings and adaptors, gas fitting components, and general plumbing hardware machined to customer drawings from the as-cast blank.
Key Features
- Arsenic-inhibited DZR brass composition per EN 1982 CC750S
- Sand casting, investment casting, green sand casting, centrifugal casting, permanent mold casting, and resin sand shell casting available
- Resistance to dezincification in aggressive mains and potable water
- Suitable for buried and underwater plumbing installations
- Good machinability for threading and valve trim finishing
- Custom pattern and tooling development in-house
- CNC machining available on the same castings for finished components
- Batch-wise chemical composition and dezincification test certification available
Arsenic Addition and Composition Control
Melt chemistry is verified by spectrometer analysis before pouring to confirm copper, zinc, lead, and arsenic content falls within the DZR specification window, since correct arsenic dosing is the key control point for reliable dezincification resistance.
Dezincification Testing
Castings intended for potable water service can be supplied with dezincification test certification carried out to methods referenced in ISO 6509 or equivalent national standards, confirming corrosion layer depth remains within accepted limits.
Machinability for Valve and Fitting Components
DZR brass machines cleanly for threading, boring, and turning operations used to finish valve bodies, tap bodies, and fitting connections directly from the as-cast blank, supporting efficient downstream production of finished plumbing hardware.
Corrosion Performance in Buried and Wet Service
DZR brass castings are specified for underground plumbing fittings, buried stopcocks, and marine potable water hardware where continuous wet contact would otherwise accelerate dezincification failure in standard brass.
Casting Process Selection by Component
Cable Glands India selects sand casting, investment casting, green sand casting, centrifugal casting, permanent mold casting, or resin sand shell casting for each DZR brass order based on component geometry, wall thickness, production volume, and target unit cost.
Technical Specifications
| Parameter | Typical Range / Value |
|---|---|
| Alloy designation | DZR Brass / EN 1982 CC750S |
| Tensile strength | 350 to 450 MPa (cast) |
| Elongation | 15 percent to 25 percent |
| Hardness | 90 to 120 HB |
| Density | Approximately 8.5 g/cm3 |
| Casting methods | Sand, investment, green sand, centrifugal, permanent mold, resin sand shell |
| Dezincification resistance | Tested per ISO 6509 or equivalent on request |
| Typical casting weight range | 0.02 kg to 40 kg (larger on request) |
Raw Material Grades
| Grade | Alloy Type | Notes |
|---|---|---|
| DZR Brass (CC750S) | Arsenical dezincification resistant brass | Standard grade for potable water fittings |
| CuZn35Pb2As | Leaded arsenical brass | Common wrought/cast reference composition |
| CW602N | Standard leaded brass (non-DZR) | Used where dezincification resistance is not required |
| CC752S | DZR brass variant | Alternative composition window for casting |
International Equivalent Standards
| Country / Standard Body | Equivalent Reference |
|---|---|
| Europe – EN | EN 1982 CC750S (DZR casting grade) |
| UK – BS | BS 2872 / BS EN 12165 CZ132 (wrought reference) |
| Germany – DIN | DIN 50930 dezincification reference |
| Australia – AS | AS 2345 dezincification resistance testing |
| India – IS | IS 320 leaded brass ingots and castings (reference) |
| ISO | ISO 6509 dezincification test method |
Product Types and Variants
| Casting Type | Description | Typical Use |
|---|---|---|
| Sand cast blanks | Larger components, low to medium volume | Valve bodies, fitting blanks |
| Investment cast blanks | Close tolerance, intricate geometry | Valve trim, tap bodies |
| Green sand cast blanks | Medium volume, reusable pattern | Plumbing fittings |
| Centrifugal cast bushings | Directionally solidified cylindrical blank | Valve preforms, bushings |
| Permanent mold cast blanks | Higher volume, repeatable dimensions | Fittings, connector bodies |
| Resin sand shell cast blanks | Improved surface finish and accuracy | Medium volume precision components |
| Finished machined components | Fully machined from cast blank | Ready-to-install valves, fittings |
Applications in Industry
Potable Water Valves and Fittings
DZR brass castings form stopcocks, ball valve bodies, and pipe fittings used throughout potable water distribution systems where long-term dezincification resistance is a specification requirement.
Water Meters and Utility Components
Water meter bodies and utility connection fittings are cast in DZR brass for reliable long-term performance in continuous water contact.
Underground and Buried Plumbing
Buried stopcocks, underground couplings, and below-ground fitting components are specified in DZR brass because standard brass is more vulnerable to dezincification in soil and groundwater contact.
Taps, Faucets and Sanitary Fittings
Tap bodies, faucet components, and sanitary fittings use DZR brass for corrosion resistance combined with the machinability needed for fine threaded connections and valve seats.
Manufacturing Process
Production begins with melt preparation in induction furnaces, where copper, zinc, lead, and a controlled arsenic addition are alloyed to the DZR specification, verified by spectrometer analysis before pouring. Depending on component size, tolerance, and volume, castings are produced by sand casting, investment casting, green sand casting, centrifugal casting, permanent mold casting, or resin sand shell casting, then fettled to remove gates, risers, and flash. Components for potable water service are visually inspected and, where specified, dezincification tested and hydrostatically tested before proceeding to CNC machining, where valve seats, threads, and sealing faces are finished to drawing tolerance. Finished components are cleaned, dimensionally inspected, and packed for dispatch with accompanying material and test certification.
Quality Standards and Certifications
| Standard / Certification | Scope |
|---|---|
| ISO 9001 | Quality management system certification |
| EN 1982 | Reference specification for copper alloy ingots and castings |
| ISO 6509 | Dezincification resistance test method reference |
| AS 2345 | Dezincification resistance testing reference |
| WRAS / drinking water approval | Potable water contact compliance on request |
Why Choose Cable Glands India
- In-house melting, casting, and CNC machining for full process control
- Controlled arsenic dosing and spectrometer verified alloy composition
- Sand, investment, green sand, centrifugal, permanent mold, and resin sand shell casting under one roof
- Dezincification and pressure test certification available on request
- In-house pattern and tooling development for new component designs
- Competitive per-kilogram pricing with volume and OEM discounts
Frequently Asked Questions
Q1: What is DZR brass?
DZR brass is a dezincification resistant copper-zinc casting alloy containing a controlled arsenic addition that prevents selective zinc loss in aggressive water, used for potable water valves and plumbing fittings.
Q2: Why is DZR brass used instead of standard brass?
Standard leaded brass can suffer dezincification, a corrosion process that leaves a porous, weakened copper-rich layer, in aggressive water conditions, while DZR brass resists this failure mode over long service life.
Q3: What casting methods do you offer for DZR brass?
We offer sand casting, investment casting, green sand casting, centrifugal casting, permanent mold casting, and resin sand shell casting, selected according to component size, tolerance, and order volume.
Q4: Is DZR brass suitable for underground plumbing?
Yes, DZR brass is widely specified for buried stopcocks, underground couplings, and below-ground fittings due to its resistance to dezincification in soil and groundwater contact.
Q5: Can you provide dezincification test certification?
Yes, dezincification test certification to ISO 6509 or equivalent methods can be arranged on request for components supplied for potable water service.
Q6: What casting weight range can you produce?
Standard capability covers castings from approximately 0.02 kg up to 40 kg, with larger components available on request.
Q7: Can you supply finished machined components, not just raw castings?
Yes, our foundry and CNC machining operations work together to supply fully finished, ready-to-install valve and fitting components from the same DZR brass casting.
Q8: What is the price of DZR brass casting?
Indicative pricing is US$ 15.90 per kilogram, with final pricing depending on component geometry, casting process, machining requirements, and order quantity.
Q9: Do you export DZR brass castings internationally?
Yes, Cable Glands India exports DZR brass castings and machined components worldwide, with documentation support for customs and OEM approval processes.
International Equivalent Terms
| Language | Equivalent Terms |
|---|---|
| Spanish | Fundicion de laton DZR, Laton resistente a la dezincificacion |
| Russian | Lite iz latuni DZR, Latun stoykaya k obestsinkovaniyu |
| French | Fonte de laiton DZR, Laiton resistant a la dezincification |
| Portuguese | Fundicao de latao DZR, Latao resistente a dezincificacao |
| Italian | Fusione di ottone DZR, Ottone resistente alla dezincificazione |
Linked Parts and Related Terms
DZR Brass Casting, Dezincification Resistant Brass, CC750S Brass Casting, Potable Water Valve Casting, Water Meter Body Casting, Sand Casting, Investment Casting, Centrifugal Casting, Permanent Mold Casting, C83600 Bronze Casting.
Related Products in this Category
- C83600 Bronze Casting
- Gunmetal Casting – LG2 Bronze Casting
- Lead Free Brass Casting and Cast Parts
- High Conductive Copper Casting
- UNS C95500 Bronze Casting
- Leaded Bronze Alloy Casting
- Silicon Brass / Silicon Bronze Casting ASTM C87300, C87500, C87600
Get a Quote – DZR Brass Casting
Ready to source DZR brass castings for potable water valves, fittings, or custom plumbing components? Our foundry team can recommend the correct casting process for your application.
Price: US$ 15.90 per kilogram | Custom pricing available for bulk and OEM orders
Email: sales@cableglandsindia.com
Phone / WhatsApp: +91-22-43449300
Website: www.cableglandsindia.com
Share your drawing, required quantities, and preferred delivery timeline, and we will respond with a detailed quotation within one business day.