Price: US$ 13.40 / Kilogram (Indicative) — Material: HPb59-1 / HPb59-2 Brass | Min. Order: 1 Kilogram | Supply Ability: As per requirement. Price varies by specification, quantity and finish; contact us for a firm quote.
HPb59-1 Brass Fittings, HPb59-1 Brass components, HPb59-2 Brass Fittings
Overview: HPb59-1 and HPb59-2 Brass Fittings and Brass Components
Brass and Copper Parts manufactures HPb59-1 and HPb59-2 leaded brass fittings and machined brass components from its ISO 9001:2015 certified plant in Jamnagar, India. HPb59-1 and HPb59-2 are GB/T 4423 (China) and GOST (Russia/CIS, designated LS59-1) leaded copper-zinc alloys widely specified across Chinese, Russian, and Commonwealth of Independent States engineering drawings for turned fittings, valve components, and precision machined parts. Both grades share a nominal 57-60% copper content with the balance zinc, differing principally in lead content, which governs machinability and surface finish. We supply bar-turned fittings, pressed components, and CNC machined parts in HPb59-1/HPb59-2 brass to distributors, EPC contractors, and OEM buyers across Asia, the CIS region, the Middle East, and Europe, with full material cross-referencing to CW614N, C36000, and CZ121 equivalents for buyers standardising on EN or ASTM procurement specifications.
What is HPb59-1 Brass?
HPb59-1 is the Chinese GB/T 4423 designation (and GOST LS59-1 equivalent) for a leaded alpha-beta brass with 57-60% copper, 0.8-1.9% lead, and balance zinc. The “H” prefix denotes brass (huangtong) in Chinese standard nomenclature, “Pb” identifies lead as the principal secondary alloying element, “59” indicates approximate copper percentage, and “1” indicates approximate lead percentage. HPb59-1 corresponds closely to CW612N (CuZn39Pb1.5) under EN 12164/12165 and to ASTM C37700 forging brass in machinability character, though exact compositional bands differ slightly between standards.
What is HPb59-2 Brass?
HPb59-2 is a higher-lead variant within the same 57-60% copper family, with lead content typically in the 2.0-3.0% range, giving materially higher machinability than HPb59-1. HPb59-2 is the grade more commonly selected for high-speed CNC turning, automatic screw machine production, and multi-spindle bar machining of fittings, closely corresponding to CW614N (CuZn39Pb3) and ASTM C36000 in machinability index (~100). Where drawings specify HPb59-2 without further clarification, we cross-reference the material certificate to CW614N/C36000 to confirm equivalence for the buyer\u2019s quality system.
Machinability Comparison: HPb59-1 vs HPb59-2
HPb59-1, with its lower lead content, offers a machinability index of approximately 70-80 relative to the CDA free-cutting benchmark, favouring components requiring some cold-forming, swaging, or riveting after machining, where excessive lead content would embrittle the joint. HPb59-2, with 2.0-3.0% lead, achieves a machinability index close to 100, making it the preferred grade for high-volume automatic turning of fittings, adaptors, and threaded components where machining speed and tool life are the dominant cost factors. Selecting between the two grades depends on whether the finished fitting requires secondary cold-working or maximum machining throughput.
Brass Fittings Manufactured in HPb59-1/HPb59-2
Compression fittings, hose adaptors, pipe couplings, union nuts, ferrules, and threaded reducers are produced from HPb59-1/HPb59-2 bar stock on CNC lathes and multi-spindle bar machines. Fittings are machined to metric, BSP, and NPT thread standards, with bore sizes from 3 mm to 50 mm, and are supplied plated (nickel or chrome) or unplated per customer specification. Fittings for water distribution, gas service, and pneumatic systems form the largest share of HPb59-1/HPb59-2 component demand from distributors and EPC contractors.
Forged and Pressed HPb59-1/HPb59-2 Components
Beyond machined fittings, HPb59-1 in particular is used for hot-forged brass components such as valve bodies, stop-cock bodies, and connector shells, taking advantage of its good hot-workability in the alpha-beta phase region (600-750 Degree C forging range). Forged blanks are subsequently CNC machined to finished dimension, combining the material efficiency of forging with the dimensional accuracy of CNC finishing for medium-to-high volume plumbing and gas fitting programs.
Corrosion Resistance and Service Suitability
HPb59-1/HPb59-2 brass offers good resistance to atmospheric exposure, fresh water, fuel, and industrial gases, consistent with other leaded alpha-beta brasses. As with CW614N and C36000, these grades are not recommended for continuous seawater immersion or ammonia-bearing environments due to dezincification and season-cracking risk; DZR or lead-free alternatives should be specified for such duty.
Regional Standard Cross-Referencing
Because HPb59-1/HPb59-2 designations originate from GB/T (China) and GOST (Russia/CIS) standards, buyers converting from European or American drawings require careful cross-referencing. We provide material certificates noting the equivalence chain between HPb59-1/HPb59-2, CW612N/CW614N (EN), C37700/C36000 (ASTM/CDA), and CZ121 (BS legacy) so that distributors and OEMs can maintain specification continuity when sourcing from multiple regional suppliers.
Key Features of HPb59-1 and HPb59-2 Brass Fittings and Components
- Dual Grade Flexibility: HPb59-1 (lower lead, better cold-formability) and HPb59-2 (higher lead, maximum machinability) cover both machining and forming requirements.
- Machinability Index up to ~100 (HPb59-2): Suitable for high-speed CNC turning and multi-spindle automatic bar machining.
- Good Hot Forgeability: HPb59-1 supports hot forging of valve bodies and connector shells in the 600-750 Degree C range.
- Full Thread Range: Metric, BSP, and NPT threads machined with calibrated gauge verification.
- General Corrosion Resistance: Suitable for atmospheric, fresh-water, fuel, and industrial gas service.
- Cross-Standard Documentation: Certificates cross-reference GB/T and GOST designations to EN and ASTM/CDA equivalents.
CNC Turned Fitting Precision
HPb59-1/HPb59-2 bar stock is processed on CNC lathes and multi-spindle bar machines to produce fittings, adaptors, and couplings with turned diameter tolerance of +/-0.02 mm standard and +/-0.01 mm on precision work. Live tooling stations perform cross-drilling and flat-milling in the same cycle as turning, reducing secondary operations for high-volume fitting programs.
Thread Machining and Gauging
Metric ISO 965, BSP (ISO 7-1), and NPT (ASME B1.20.1) threads are produced on HPb59-1/HPb59-2 fittings with Go/No-Go gauge verification on 100% of critical threaded features. Thread class 6H/6g or 2A/2B is standard, suitable for plumbing, gas, and pneumatic fitting assembly requirements.
Forging and Hot-Working Capability
HPb59-1 hot-forged blanks for valve bodies and stop-cock housings are produced at 600-750 Degree C, taking advantage of the alloy beta-phase hot ductility, then CNC finish-machined to drawing tolerance. This combined route reduces material waste versus machining from solid bar for medium-to-high volume fitting bodies.
Plating and Surface Finish Options
HPb59-1/HPb59-2 fittings are supplied as-machined, vibratory tumbled, nickel plated, or chrome plated depending on the end application; chrome plating is common for visible plumbing fittings while nickel plating is specified for corrosion protection on industrial and gas service components.
Corrosion and Service Environment Guidance
For general water, fuel, and gas service, HPb59-1/HPb59-2 provide adequate corrosion resistance; for potable water compliance or marine/ammonia exposure, we recommend DZR brass (CW602N) or lead-free alternatives, and our technical team assists with grade substitution without redesign.
Distributor and OEM Documentation Support
For distributors sourcing HPb59-1/HPb59-2 fittings across multiple regional suppliers, we issue consolidated material certificates cross-referencing GB/T 4423, GOST, EN 12164/12165, and ASTM B16/B453 designations, simplifying incoming quality inspection and specification compliance across markets.
Technical Specifications: HPb59-1 and HPb59-2 Brass
| Property | HPb59-1 | HPb59-2 | Standard |
|---|---|---|---|
| Designation | HPb59-1 | HPb59-2 | GB/T 4423 |
| Copper (Cu) | 57.0 – 60.0% | 57.0 – 60.0% | GB/T 4423 |
| Lead (Pb) | 0.8 – 1.9% | 2.0 – 3.0% | GB/T 4423 |
| Zinc (Zn) | Balance | Balance | GB/T 4423 |
| Iron (Fe) max | 0.3% | 0.3% | GB/T 4423 |
| Density | 8.47 g/cm3 | 8.44 g/cm3 | – |
| Melting Range | 900 – 910 Degree C | 890 – 900 Degree C | – |
| Machinability Index | ~70-80 | ~100 | CDA benchmark |
| Tensile Strength | 360 – 480 MPa | 360 – 500 MPa | GB/T 4423 |
| Elongation | 20 – 45% | 15 – 40% | GB/T 4423 |
| Hardness | 80 – 130 HV | 90 – 145 HV | – |
| Electrical Conductivity | 27% IACS | 26% IACS | – |
HPb59-1 / HPb59-2 International Grade Equivalents
| Standard / Country | Designation | Specification | Cu % | Pb % | Notes |
|---|---|---|---|---|---|
| GB/T (China) | HPb59-1 | GB/T 4423 | 57-60 | 0.8-1.9 | Lower lead; better cold-formability |
| GB/T (China) | HPb59-2 | GB/T 4423 | 57-60 | 2.0-3.0 | Higher lead; maximum machinability |
| GOST (Russia/CIS) | LS59-1 | GOST 15527 | 57-60 | 0.8-1.9 | Direct GOST equivalent of HPb59-1 |
| EN / CEN (Europe) | CW612N | EN 12164, EN 12165 | 57-59 | 1.6-2.5 | Closest EN equivalent, intermediate lead |
| EN / CEN (Europe) | CW614N | EN 12164, EN 12165 | 57-59 | 2.5-3.5 | Closest EN equivalent to HPb59-2 |
| ASTM / CDA (USA) | C37700 | ASTM B283 | 58-61 | 1.5-2.5 | Forging brass equivalent to HPb59-1 |
| ASTM / CDA (USA) | C36000 | ASTM B16, B453 | 60-63 | 2.5-3.7 | Closest ASTM equivalent to HPb59-2 |
| BS (UK) – Legacy | CZ122 / CZ121 | BS 2874 (withdrawn) | 58-61 / 57-59 | 1.5-2.5 / 2.5-3.5 | Legacy BS cross-reference |
HPb59-1/HPb59-2 Raw Material Forms
| Product Form | Size Range | Typical Use |
|---|---|---|
| Extruded Round Bar | 6 – 150 mm dia. | CNC turned fittings and components |
| Cold Drawn Round Rod | 3 – 60 mm dia. | Precision turned parts |
| Hexagonal Bar | 6 – 50 mm AF | Nuts, fasteners, fitting bodies |
| Forging Billet | Custom diameter | Hot-forged valve and stop-cock bodies |
Product Types and Variants
HPb59-1/HPb59-2 Compression Fittings
Pipe couplings, union nuts, ferrules, and reducers machined to metric, BSP, and NPT thread standards for water and gas distribution networks.
HPb59-1/HPb59-2 Valve and Stop-Cock Components
Hot-forged and CNC-finished valve bodies, stop-cock housings, and handle components for plumbing and gas shut-off applications.
HPb59-1/HPb59-2 CNC Turned Parts
Bushings, spacers, nipples, and studs machined on CNC lathes and multi-spindle bar machines to customer drawing tolerances.
HPb59-1/HPb59-2 Hose and Pneumatic Adaptors
Threaded adaptors and quick-connect fitting bodies for pneumatic and hydraulic hose assemblies, plated or unplated per specification.
HPb59-1/HPb59-2 Distributor Stock Components
Standard-catalogue fittings and turned parts maintained in bulk stock for distributor resale, with consolidated cross-reference certification.
Applications by Industry
| Industry | Typical HPb59-1/HPb59-2 Parts |
|---|---|
| Plumbing and Water Distribution | Compression fittings, couplings, ferrules, stop-cock bodies |
| Gas Distribution | Valve bodies, threaded adaptors, meter fitting components |
| EPC Contractors and Power Utilities | Panel hardware, cable gland bodies, earthing fittings |
| Pneumatics and Hydraulics | Hose adaptors, quick-connect bodies, manifold inserts |
| Distributors and Wholesalers | Standard catalogue brass fittings and turned components |
| Automotive (General Service) | Fuel line fittings, sensor bodies |
| Instrumentation | Gauge adaptors, compression ferrules |
Manufacturing Process for HPb59-1/HPb59-2 Fittings and Components
Step 1 – Material Verification: HPb59-1/HPb59-2 bar or forging billet received with GB/T 4423 or GOST material certificate; incoming XRF confirms Cu/Zn/Pb composition.
Step 2 – Forging (where applicable): HPb59-1 billets hot-forged at 600-750 Degree C for valve and stop-cock body blanks.
Step 3 – CNC Turning: Bar stock or forged blanks machined on CNC lathes and multi-spindle bar machines to drawing tolerance.
Step 4 – Thread Machining and Gauging: Metric, BSP, and NPT threads produced with 100% Go/No-Go gauge verification.
Step 5 – Deburring and Cleaning: Vibratory tumbling and ultrasonic cleaning remove machining burrs and residue.
Step 6 – Plating: Nickel or chrome plating applied per specification, with coating thickness verified by XRF gauge.
Step 7 – Final Inspection: Dimensional inspection, thread gauging, and visual inspection per AQL 1.0/2.5; batch certificates issued.
Step 8 – Packing and Export: Bulk carton or compartmentalised packing with material certificate, packing list, invoice, and Certificate of Origin.
Quality Standards and Certifications
- ISO 9001:2015 certified quality management system
- Material certified to GB/T 4423 or GOST 15527; cross-reference to EN 12164/12165 and ASTM B16/B283/B453 provided on request
- Material test certificate with composition and mechanical property data for every batch
- Thread gauging per ISO 965 (metric), ISO 7-1 (BSP), ASME B1.20.1 (NPT)
- SPC-controlled production with Cpk targets on critical dimensions
- RoHS 2 Annex III Category 6(c) exemption documentation for lead content
- REACH SVHC declaration provided on request
Why Choose Brass and Copper Parts for HPb59-1/HPb59-2 Fittings
- Dual-Grade Sourcing: Both HPb59-1 and HPb59-2 stocked and machined in-house, avoiding split sourcing across suppliers.
- Forging and Machining Integration: Hot forging and CNC finishing combined for cost-efficient valve and fitting body production.
- Cross-Standard Certification: Material certificates cross-reference GB/T, GOST, EN, and ASTM designations for global distributor compliance.
- Distributor Bulk Supply: Standard catalogue fittings maintained in stock for rapid distributor resale programs.
- Export Documentation: Material certificates, RoHS/REACH declarations, and Certificate of Origin issued as standard.
- Competitive Pricing: Direct-from-mill bar sourcing in Jamnagar, India, at 25-40% cost saving versus regional alternatives.
Frequently Asked Questions
What is the difference between HPb59-1 and HPb59-2?
HPb59-1 contains 0.8-1.9% lead and offers better cold-formability; HPb59-2 contains 2.0-3.0% lead and offers higher machinability, closer to CW614N/C36000. HPb59-1 suits forged and formed components; HPb59-2 suits high-speed CNC turning.
Is HPb59-1 the same as CW612N?
HPb59-1 and CW612N (CuZn39Pb1.5) are closely equivalent leaded brasses with similar copper and intermediate lead content, though exact compositional bands differ between GB/T and EN standards. We provide cross-reference certification for buyers converting between the two designations.
Is HPb59-2 the same as CW614N or C36000?
HPb59-2 lead content (2.0-3.0%) overlaps closely with CW614N (2.5-3.5%) and C36000 (2.5-3.7%), giving comparable machinability index (~100). For practical machining and material certification purposes, HPb59-2 is treated as functionally equivalent to CW614N/C36000.
Can HPb59-1/HPb59-2 be hot forged?
Yes. HPb59-1 in particular has good hot-workability in the 600-750 Degree C range and is commonly used for forged valve bodies and stop-cock housings, which are subsequently CNC machined to finished dimension.
What thread standards are available on HPb59-1/HPb59-2 fittings?
Metric ISO 965, BSP (ISO 7-1), NPT (ASME B1.20.1), and other regional thread forms are produced with calibrated Go/No-Go gauge verification on all critical threaded features.
Is HPb59-1/HPb59-2 suitable for potable water?
Standard HPb59-1/HPb59-2 does not meet dezincification resistance or low-lead potable water requirements in most jurisdictions. For drinking water contact components, DZR brass (CW602N) or certified lead-free alloys should be specified instead.
What plating options are available?
Nickel plating (for corrosion protection) and chrome plating (for decorative plumbing fittings) are available through approved plating partners, with coating thickness verified by XRF gauge on batch samples.
What is the minimum order quantity?
Prototype and small-batch fittings from 100 pieces; production CNC turned fittings from 1,000 pieces; multi-spindle bar machine production from 10,000 pieces, with distributor bulk-stock programs available for standard catalogue items.
Do you provide material test certificates for HPb59-1/HPb59-2?
Yes. Material test certificates confirming composition and mechanical properties, cross-referenced to GB/T, GOST, EN, and ASTM equivalents, are issued with every production batch.
Can HPb59-1/HPb59-2 be supplied with EN or ASTM equivalent documentation for EU/US buyers?
Yes. We supply HPb59-1/HPb59-2 with cross-reference documentation noting the closest EN (CW612N/CW614N) and ASTM/CDA (C37700/C36000) equivalent designations, allowing EU and US buyers to maintain internal specification compliance.
Equivalent Terms in Other Languages
| Language | Equivalent Terms for HPb59-1/HPb59-2 Brass Fittings and Components |
|---|---|
| Spanish | Accesorios de laton HPb59-1, Componentes de laton HPb59-2, Laton con plomo CuZn39Pb |
| Russian | latunnaya armatura LS59-1, detali iz latuni LS59-1, svintsovaya latun (Cyrillic: \u043b\u0430\u0442\u0443\u043d\u043d\u044b\u0435 \u0444\u0438\u0442\u0438\u043d\u0433\u0438 LS59-1) |
| French | Raccords en laiton HPb59-1, Composants en laiton HPb59-2, Laiton au plomb CuZn39Pb |
| Portuguese | Conexoes de latao HPb59-1, Componentes de latao HPb59-2, Latao com chumbo CuZn39Pb |
| Italian | Raccordi in ottone HPb59-1, Componenti in ottone HPb59-2, Ottone al piombo CuZn39Pb |
Related Products and Linked Terms
- CW614N CuZn39Pb3 Brass Machined Parts and CNC Machined Components
- Brass CZ 121 Machined Components, Brass CZ 121 Turned Parts
- Brass C36000 Alloy Parts, Free Machining CDA 360 Brass Parts
- Brass Forging
- Brass DZR Parts, Brass DZR Machined Components
- Brass Components Category
Request a Quote for HPb59-1 and HPb59-2 Brass Fittings and Components
Submit your engineering drawings (DXF, STEP, PDF) specifying HPb59-1, HPb59-2, or the equivalent GOST/EN/ASTM grade, thread standards, quantity, and finish requirements. Our technical team responds with a cross-referenced material quotation within 24-48 hours.
Email: sales@brass-copper-parts.com | Phone/WhatsApp: +91-22-43449300
Brass and Copper Parts (India) – Plot 10-B, GIDC Industrial Estate, Shankar Tekri, Jamnagar 361004, Gujarat, India.
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