Products
Bronze Flanges
Bronze flanges for water, steam and marine piping in cast bronze, aluminum bronze, NAB and lead-free grades.
Overview
Bronze flanges allow bolted connections in piping where corrosion resistance, galvanic compatibility with bronze valves or pumps, or sea-water service are important. Material options listed include C83600, C84400, C92200, C95400, C95500, C95800, C89833 and, as a special-order item, C51000.
Flange selection depends on the standard or drawing (dimensions, drilling, facing), pressure class, material and mating components. This website does not claim compliance with any flange standard or pressure class – these must be verified against the actual product and specification.
Grades and product combinations
Each combination has its own detail page with material notes, inquiry form and related grades.
C83600 Bronze FlangesThe standard 85-5-5-5 cast alloy for general-purpose bronze pipe fittings, valves and plumbing components.View details →C84400 Bronze FlangesAn economical, highly machinable cast alloy (about 81-3-7-9) for general-purpose fittings, valves and plumbing hardware.View details →C92200 Valve Bronze FlangesA leaded tin-zinc bronze developed for steam and valve castings that need pressure tightness and reliable service in hot water and steam.View details →C95400 Aluminum Bronze FlangesThe general-purpose cast aluminum bronze: high strength, excellent wear resistance and good corrosion resistance for heavy-duty parts.View details →C95500 Aluminum Bronze FlangesA higher-strength cast aluminum bronze with added nickel, used for heavily loaded gears, bearings and corrosion-resistant components.View details →C95800 Nickel Aluminum Bronze FlangesThe principal cast nickel-aluminum bronze for sea-water service, valued for strength with strong resistance to corrosion, cavitation and erosion.View details →C89833 Lead-Free Bronze FlangesA lead-free cast copper alloy considered for fittings, flanges and valve parts where lead content in wetted components is restricted.View details →C51000 Phosphor Bronze FlangesSpecial-order / application-specificView details → Available forms
- Cast or machined flanges to drawing or standard – subject to confirmation
- Blind, slip-on, threaded and similar types – subject to confirmation
- Special-order flanges from wrought stock (e.g. C51000)
Standards, sizes, facings and ratings are confirmed with the company for each inquiry; none are published here.
Selection considerations
- Provide the flange standard, size and class – or a drawing – with the inquiry.
- Check the mating flange material and bolting for galvanic and strength compatibility.
- Define the connection type: bolted, threaded, solder or braze.
- Request inspection and documentation needs at the time of inquiry (e.g. material certificates, dimensional report).
Typical applications
- Pump and valve connections
- Marine and sea-water piping (grade dependent)
- Steam and hot-water systems
- Process and fluid-handling pipework
- Replacement flanges to drawing
Application areas are examples only. Grade suitability must be confirmed for the actual operating environment.
Technical reference: grades at a glance
| UNS | Material | Alloy family / type | Availability |
|---|---|---|---|
| C83600 | Leaded Red Brass / Composition Bronze (85-5-5-5) | Cast copper-tin-lead-zinc alloy | Listed – size and stock confirmed per inquiry |
| C84400 | Leaded Semi-Red Brass / Valve Metal (81-3-7-9) | Cast copper-tin-lead-zinc alloy | Listed – size and stock confirmed per inquiry |
| C92200 | Steam / Valve Bronze (Navy “M” Bronze) | Cast copper-tin-lead-zinc alloy | Listed – size and stock confirmed per inquiry |
| C95400 | Aluminum Bronze (9C, 10–11.5% Al) | Cast copper-aluminum-iron alloy | Listed – size and stock confirmed per inquiry |
| C95500 | Nickel-Aluminum Bronze (Ni 3–5.5%) | Cast copper-aluminum-nickel-iron alloy | Listed – size and stock confirmed per inquiry |
| C95800 | Nickel-Aluminum Bronze (Marine Grade) | Cast copper-aluminum-nickel-iron-manganese alloy | Listed – size and stock confirmed per inquiry |
| C89833 | Lead-Free Bronze | Cast lead-free copper alloy | Listed – size and stock confirmed per inquiry |
| C51000 | Phosphor Bronze A (5% Tin) | Wrought copper-tin-phosphorus alloy | Special-order / application-specific |
Reference data only – typical or nominal values from published specifications, not a guarantee of supplied material. Confirm against the current edition of the applicable specification, the product form and condition, and the material test certificate. Technical review by the company is required before publication or reliance.
Frequently asked questions
Which flange standard do you comply with?
No compliance is claimed on this website. State the standard you need and the company will confirm what can be supplied.
Can I order flanges to my drawing?
Yes – drawing-based inquiries are welcome; upload on the quote form.
Are phosphor bronze flanges available?
C51000 flanges are listed as special-order / application-specific.
Need a different grade or size?
Share your specification or drawing and we will review the options with you.