Bronze material family
Additional Cast Bronze Grades
Leaded cast alloys widely used for pipe fittings and valves.
Overview
These are the leaded copper-tin-zinc casting alloys most widely used in bronze pipe fittings and valves: C83600 (85-5-5-5) and C84400 (81-3-7-9). Strictly they are leaded red and semi-red brasses, but they are sold under the “bronze” name in the fittings and valve trade.
Both contain lead and are not intended for lead-restricted services.
Grades in this family
C83600 – Leaded Red Brass / Composition Bronze (85-5-5-5)The standard 85-5-5-5 cast alloy for general-purpose bronze pipe fittings, valves and plumbing components.View details →
C84400 – Leaded Semi-Red Brass / Valve Metal (81-3-7-9)An economical, highly machinable cast alloy (about 81-3-7-9) for general-purpose fittings, valves and plumbing hardware.View details → | UNS | Name | Type | Product forms listed |
|---|---|---|---|
| C83600 | Leaded Red Brass / Composition Bronze (85-5-5-5) | Cast copper-tin-lead-zinc alloy | Fitting, Flange |
| C84400 | Leaded Semi-Red Brass / Valve Metal (81-3-7-9) | Cast copper-tin-lead-zinc alloy | Fitting, Flange |
Product forms listed are those shown on this website; availability is confirmed per inquiry.
Selection guide
- General bronze pipe fittings: C83600.
- Economical low-pressure parts: C84400.
- Steam / higher-duty valve service: C92200.
- Lead-restricted water: review C89833.
Typical applications
- Threaded and solder-joint pipe fittings
- Valve bodies and bonnets
- Pump and meter castings
- Plumbing and heating hardware (where lead is permitted)
- General industrial fluid handling
- Low-pressure valves and fittings
- Plumbing and heating components
- General hardware castings
- Fixtures and instrumentation parts
Examples only – confirm suitability for your service.
Frequently asked questions
Why are these called bronze?
Because of long-standing trade usage in the fittings and valve industry.
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