C87850 Silicon Bronze Casting

C87850 Silicon Bronze Casting | Lead-Free Silicon Bronze | NSF 61 Compliant

C87850 Lead-Free Silicon Bronze casting (UNS C87850) is a low-lead (<0.25% Pb) silicon-zinc copper alloy designed to meet NSF 61 potable water requirements, California AB 1953, RoHS 3, REACH, and California Proposition 65 regulations. Electrical Accessories India manufactures C87850 lead-free silicon bronze castings using sand casting, investment casting, centrifugal casting, green sand casting, and permanent mold casting for plumbing, potable water, and food-grade applications where lead-free copper alloys are required.

C87850 provides mechanical properties comparable to standard silicon brass (C87800/CC212A) while meeting the strictest lead content regulations in the USA, EU, and internationally. With 2.0-4.0% silicon content providing dezincification resistance and a copper-dominant matrix, C87850 offers good corrosion resistance combined with the lead-free compliance required for modern plumbing and water system hardware.

Chemical Composition – C87850 (ASTM B584)

C87850 Lead-Free Silicon Bronze Properties

C87850 Silicon Bronze Casting Processes

C87850 Silicon Bronze Sand Casting

C87850 Lead-Free Silicon Bronze Sand Casting uses furan resin-bonded sand moulds for large and medium-weight components. C87850 sand castings are used for valve bodies, pump bodies, and plumbing hardware where lead-free compliance is required for potable water or NSF 61 service. Component weights 0.05-200+ kg. Tolerances CT7-CT9. Lead content certified <0.25% in test certificates.

Applications: Lead-free valve bodies, plumbing fittings, potable water pump bodies, NSF 61 hardware.

C87850 Silicon Bronze Centrifugal Casting

C87850 Lead-Free Silicon Bronze Centrifugal Casting produces cylindrical lead-free components for plumbing and potable water applications. Centrifugal force produces dense, sound castings with very low gas and inclusion content. Tolerances CT5-CT6. Lead content <0.25% certified.

Applications: Lead-free pipe flanges, valve seat rings, cylindrical plumbing components requiring NSF 61 compliance.

C87850 Silicon Bronze Investment Casting

C87850 Lead-Free Silicon Bronze Investment Casting achieves CT4-CT5 tolerances and Ra 1.6-3.2 um surface finish for precision lead-free plumbing and food-grade components. Investment casting of C87850 is used for complex-geometry potable water fittings, food processing hardware, and medical-adjacent applications where lead elimination is mandatory and precision is required.

Applications: Precision potable water fittings, food-grade copper alloy components, medical adjacent hardware, precision lead-free plumbing valves.

C87850 Silicon Bronze Green Sand Casting

C87850 Lead-Free Silicon Bronze Green Sand Casting provides economical production for standard hardware shapes requiring lead-free certification. Clay-bonded green sand moulds. Tolerances CT8-CT10. Most economical for high-volume standard lead-free plumbing hardware. Lead content <0.25% certified in all production batches.

C87850 Silicon Bronze Permanent Mold Casting

C87850 Lead-Free Silicon Bronze Permanent Mold Casting uses reusable dies for high-volume lead-free hardware production. Consistent lead content below 0.25% maintained across production runs through controlled raw material sourcing. Tolerances CT5-CT7. Suitable for 500-50,000 piece production runs of standard lead-free fittings and plumbing hardware.

Lead-Free Compliance and Regulations

• NSF 61: National Sanitation Foundation Standard 61 for drinking water system components. C87850 with <0.25% Pb is compatible with NSF 61 listed product requirements.
• California AB 1953 / SB 1334: California law requiring <0.25% lead in plumbing products used for potable water. C87850 complies.
• Vermont Act 193 / Maryland HB 372: Lead-free plumbing product requirements in various US states. C87850 complies.
• EU RoHS 3 (2011/65/EU): Restriction of hazardous substances including lead in electrical and electronic equipment. C87850 complies.
• REACH Regulation: Registration, Evaluation, Authorisation and Restriction of Chemicals. C87850 compliance confirmed.
• EU Drinking Water Directive (2020/2184/EU): European regulation for copper alloys in contact with potable water. C87850 qualification subject to product-specific testing per DWD requirements.

Applications of C87850 Lead-Free Silicon Bronze Castings

• Potable Water Systems: Valve bodies, pump bodies, fittings, and fixtures for drinking water supply systems requiring NSF 61 and lead-free compliance
• Food and Beverage: Process equipment fittings, valves, and hardware for food and beverage contact applications
• Plumbing Hardware: Lead-free plumbing fittings for California, Vermont, Maryland, and other US states with AB 1953-equivalent regulations
• European Water Systems: Plumbing and water treatment hardware meeting EU Drinking Water Directive lead restrictions
• Green Building: LEED, BREEAM, and sustainable building projects requiring lead-free copper alloy plumbing components

Quality Standards

• ASTM B584 - Copper Alloy Sand Castings
• NSF/ANSI 61 - Drinking Water System Components (product-specific listing required)
• RoHS 3 (2011/65/EU) - Restriction of Hazardous Substances
• REACH Regulation (EC 1907/2006)
• California AB 1953 / Vermont Act 193 lead-free plumbing standards
• ISO 9001:2015 Quality Management System
• EN 10204 3.1 Mill Certificates (Pb <0.25% confirmed)

Request a Quote for C87850 Lead-Free Silicon Bronze Castings

Electrical Accessories India supplies C87850 lead-free silicon bronze castings for potable water, food-grade, and environmentally sensitive applications. All castings supplied with spectrometric analysis confirming Pb <0.25% and full EN 10204 3.1 mill certificates. Quotations within 24 hours. Provide drawing, grade (C87850 / lead-free silicon brass), quantity, casting process, compliance requirements, and delivery destination. Indicative pricing: USD 13.90 per kg CIF US Port.