Premium Bronze Casting Foundry Services in India | Advanced Non-Ferrous Metallurgy & Precision Casting Solutions

World-Class Bronze Casting Manufacturer | ISO Certified Copper Alloy Foundry

Our state-of-the-art bronze casting foundry in India specializes in precision non-ferrous metal casting, delivering superior quality bronze components through advanced metallurgical processes and multiple casting methodologies. We manufacture high-performance bronze castings for diverse industrial applications, combining traditional craftsmanship with cutting-edge foundry technology.

Comprehensive Bronze Casting Methods & Processes

Sand Casting (Green Sand & Resin Bonded Systems)

Green Sand Casting Process: Our foundry utilizes advanced green sand molding technology with sodium bentonite and western bentonite clay binders, achieving dimensional tolerances of ±0.5mm for medium to large bronze castings. We employ Disa-matic automatic molding lines and manual floor molding for intricate bronze sculptures, valves, pump housings, and marine propellers weighing from 0.5 kg to 5000 kg.

Resin Sand Casting (Furan & Phenolic Systems): We implement cold-box, warm-box, and hot-box resin sand processes using furan no-bake systems and phenolic urethane cold-box technology. Our resin-bonded sand molds deliver superior surface finish (Ra 6.3-12.5 μm) and tighter dimensional accuracy (±0.3mm) for precision bronze bushings, bearing housings, and hydraulic components.

Precision Molding Technology: Shell molding process with thermosetting resin-coated sand produces thin-walled bronze castings with excellent surface integrity and minimal machining allowances.

Investment Casting (Lost Wax Process / Precision Casting)

Ceramic Shell Investment Casting: Our investment casting facility executes the lost-wax process using both solid investment and ceramic shell techniques. We produce intricate bronze components with dimensional tolerances of ±0.1mm and surface finishes up to Ra 3.2 μm. The process involves:

• Wax pattern injection using precision tooling
• Pattern assembly on wax runner systems (tree configuration)
• Multi-layer ceramic slurry application (zircon, alumino-silicate, fused silica)
• Autoclave dewaxing at controlled temperatures
• High-temperature shell firing (900-1000°C)
• Vacuum-assisted pouring or gravity pouring
• Shell knockout and finishing operations

Ideal for complex bronze geometries including impellers, valve bodies, ornamental castings, artistic sculptures, and precision instrumentation components.

Centrifugal Casting (True & Semi-Centrifugal)

True Centrifugal Casting: Horizontal and vertical centrifugal casting machines produce cylindrical bronze components with superior metallurgical properties. Centrifugal forces (60-120G) ensure:

• Dense, porosity-free castings with directional solidification
• Segregation of lighter impurities toward inner diameter
• Superior mechanical properties in bronze bushings, sleeves, and bearing surfaces
• Grain refinement through controlled solidification

Applications: Phosphor bronze bushings, aluminum bronze bearings, gunmetal valve seats, pressure-tight cylinder liners, and wear-resistant components.

Semi-Centrifugal & Centrifuged Casting: Production of symmetrical bronze components like gears, flanges, and valve bodies with improved feed metal distribution.

Continuous Casting (Horizontal & Vertical Systems)

Our continuous casting installation produces bronze bars, rods, tubes, and hollow sections with:

• Consistent microstructure and mechanical properties
• Minimal segregation through controlled solidification rates
• Reduced material waste and superior yield
• Diameters: 20mm to 350mm in various bronze alloys

Process Parameters: Electromagnetic stirring, water-cooled crystallizer, controlled withdrawal speeds (50-200 mm/min), and inert gas shielding for oxidation prevention.

Permanent Mold Casting (Gravity Die Casting)

Metallic Mold Casting: Precision-machined cast iron and steel molds produce repetitive bronze castings with:

• Enhanced mechanical properties through rapid solidification
• Reduced porosity and refined grain structure
• Superior surface finish (Ra 6.3 μm or better)
• Tighter tolerances (±0.2mm achievable)

Ideal for medium to high-volume production of bronze valve components, pump parts, and electrical hardware.

Low-Pressure Die Casting & Vacuum Casting

Low-Pressure Permanent Mold Casting: Controlled pressurization (0.3-1.0 bar) ensures:

• Gradual mold filling with minimal turbulence
• Reduced gas entrapment and oxide inclusions
• Superior mechanical properties in critical bronze components
• Pressure-tight castings for hydraulic and pneumatic applications

Vacuum-Assisted Investment Casting: Sub-atmospheric pressure casting (50-200 mbar) eliminates gas porosity in thin-walled bronze components.

Plaster Mold Casting & Ceramic Mold Casting

Plaster Investment Casting: Gypsum-bonded molds deliver exceptional surface reproduction for:

• Artistic bronze sculptures and statuary
• Decorative architectural hardware
• Prototype development with fine detail resolution
• Surface finish up to Ra 1.6 μm

Ceramic Mold Casting (Shaw Process): High-temperature ceramic molds withstand bronze pouring temperatures while producing intricate geometries.

Pressure Die Casting (High-Pressure Die Casting)

While traditionally limited for bronze due to high melting points, our specialized HPDC systems cast lower-melting bronze alloys (aluminum bronze, silicon bronze) for:

• High-volume production (1000+ pieces)
• Complex thin-walled sections (1.5mm minimum)
• Excellent dimensional consistency
• Automotive and electrical components

Squeeze Casting & Rheocasting

Liquid Metal Forging: Squeeze casting combines casting and forging principles, applying high pressure (70-150 MPa) during solidification to produce dense, high-strength bronze components with:

• Near-wrought mechanical properties
• Minimal porosity (<0.5% by volume)
• Superior fatigue resistance

Bronze Casting Alloys – Complete International Metallurgical Specifications

COMPREHENSIVE ALLOY DATABASE: CDA, DIN, BS, GB, JIS, UNI, IS Standards

TIN BRONZE ALLOYS (COPPER-TIN-BASED)

Phosphor Bronze Casting Alloys

CDA C90200 / BS 1400 PB1 / DIN 1705 G-CuSn10 / IS 318 Grade 1

• Composition: 88% Cu, 10% Sn, 2% Zn max
• JIS: CAC406 (BC6)
• Properties: Tensile 230 MPa, Elongation 15%, Hardness 65 HB
• Applications: General purpose bearings, bushings, valve components

CDA C90300 / BS 1400 PB2 / DIN G-CuSn10Zn

• Composition: 87% Cu, 10% Sn, 2% Zn, 1% Pb
• Chinese GB: ZCuSn10Zn2
• JIS: CAC403 (BC3)
• Properties: Excellent castability, pressure-tight, corrosion resistant
• Applications: Pump bodies, valve bodies, marine fittings

CDA C90500 / DIN G-CuSn10Pb10 / BS LB2

• Composition: 85% Cu, 10% Sn, 10% Pb
• Chinese GB: ZCuSn10Pb5
• JIS: CAC402 (BC2)
• Italian UNI: G-CuSn10Pb
• Properties: Superior machinability, anti-friction properties
• Applications: High-speed bearings, gears, worm wheels

CDA C90700 / BS 1400 LB4 / DIN G-CuSn12

• Composition: 88% Cu, 12% Sn
• Chinese GB: ZCuSn12
• Properties: High strength, wear resistance
• Applications: Gears, valve seats, wear plates

CDA C91100 / DIN G-CuSn7ZnPb

• Composition: 84% Cu, 7% Sn, 7% Zn, 2% Pb
• Chinese GB: ZCuSn5Pb5Zn5
• JIS: CAC401 (BC1)
• Applications: General engineering, plumbing fixtures

CDA C91300 / BS 1400 LB5 / DIN G-CuSn5Pb9

• Composition: 85% Cu, 5% Sn, 9% Pb, 1% Ni
• Properties: Excellent bearing properties, high load capacity
• Applications: Heavy-duty bearings, automotive bushings

CDA C91600 / BS 1400 LG2 / DIN G-CuSn5ZnPb

• Composition: 85% Cu, 5% Sn, 5% Zn, 5% Pb
• Chinese GB: ZCuSn5Pb5Zn5 (equivalent)
• Applications: Valves, fittings, architectural hardware

CDA C91700 / JIS CAC406A

• Composition: 89% Cu, 11% Sn, 0.3% P
• Properties: Phosphorus deoxidized, high strength
• Applications: Bearings, gears, slides

CDA C92200 / BS 1400 G1 / DIN G-CuSn10Zn2 / IS 318 G1 (Gunmetal)

• Composition: 88% Cu, 10% Sn, 2% Zn
• Chinese GB: ZCuSn10Zn2 (ZQSn10-2)
• JIS: CAC403
• Italian UNI: G-CuSn10Zn
• Properties: Admiralty gunmetal, excellent castability, seawater resistant
• Applications: Marine valves, pumps, propellers, ship fittings

CDA C92300 / BS 1400 G3 / IS 318 G3

• Composition: 85% Cu, 5% Sn, 5% Zn, 5% Pb
• Properties: Good machinability, pressure-tight
• Applications: General engineering castings, fittings

CDA C92400 / DIN G-CuSn12Ni

• Composition: 87% Cu, 12% Sn, 1% Ni
• Properties: High hardness, wear resistance
• Applications: Worm gears, heavy-duty bearings

CDA C92500 / BS 1400 LB1

• Composition: 87% Cu, 8% Sn, 4% Zn, 1% Pb
• Applications: Bearings, bushings, general castings

CDA C92600 / DIN G-CuSn14

• Composition: 86% Cu, 14% Sn
• Properties: Very high hardness, wear resistant
• Applications: Wear plates, valve seats, dies

CDA C92700 / BS 1400 PB4 / DIN G-CuSn12Ni2

• Composition: 86% Cu, 12% Sn, 2% Ni
• Chinese GB: ZCuSn10Ni2
• Properties: High strength, corrosion resistant
• Applications: Marine hardware, aerospace components

CDA C92900 / JIS CAC407 (BC7)

• Composition: 85% Cu, 10% Sn, 1% Ni, 4% Zn
• Applications: Valves, pumps, marine fittings

High-Tin Bronze (Bell Metal / Speculum Bronze)

DIN G-CuSn20 / Chinese GB ZCuSn20

• Composition: 80% Cu, 20% Sn
• Properties: High acoustic properties, brittle
• Applications: Bells, cymbals, musical instruments

DIN G-CuSn22 / Chinese GB ZCuSn22

• Composition: 78% Cu, 22% Sn
• Applications: Bells, gongs, mirror speculum

JIS CAC411 (BC11) – Bell Metal

• Composition: 76-79% Cu, 20-23% Sn
• Applications: Temple bells, traditional casting

ALUMINUM BRONZE ALLOYS

Single-Phase Aluminum Bronze

CDA C60800 / DIN G-CuAl5

• Composition: 95% Cu, 5% Al
• Chinese GB: ZCuAl5
• Properties: Good corrosion resistance, moderate strength
• Applications: Decorative hardware, coins, medals

CDA C61000 / DIN G-CuAl9

• Composition: 91% Cu, 9% Al
• Chinese GB: ZCuAl9
• Properties: Good strength, ductility
• Applications: Pump components, marine hardware

Complex Aluminum Bronze

CDA C61300 / BS 1400 AB1 / DIN G-CuAl10Fe / JIS CAC701 (ALBC1)

• Composition: 90% Cu, 10% Al, 1% Fe
• Chinese GB: ZCuAl10Fe
• Italian UNI: G-CuAl10Fe
• IS: 291 (Grade 1)
• Properties: Tensile 450 MPa, good corrosion resistance
• Applications: Gears, valve guides, marine components

CDA C61400 / BS 1400 AB2 / DIN G-CuAl10Fe5Ni5 / IS 291 Grade 2

• Composition: 81% Cu, 10% Al, 5% Fe, 5% Ni
• Chinese GB: ZCuAl10Fe3
• JIS: CAC702 (ALBC2)
• Italian UNI: G-CuAl10Fe5Ni5
• Properties: Tensile 600 MPa, excellent strength and corrosion resistance
• Applications: Heavy-duty gears, pump impellers, valve bodies

CDA C62300 / BS 1400 AB1 (Modified)

• Composition: 89% Cu, 9% Al, 1.5% Fe, 0.5% Mn
• Properties: Heat treatable, good machinability
• Applications: Bushings, bearings, wear components

CDA C62400 / DIN G-CuAl11Fe4Ni4

• Composition: 81% Cu, 11% Al, 4% Fe, 4% Ni
• Chinese GB: ZCuAl9Fe4Ni4
• Properties: High strength after heat treatment
• Applications: Aerospace components, pressure vessels

CDA C62500 / DIN G-CuAl10Ni

• Composition: 87% Cu, 10% Al, 3% Ni
• Applications: Corrosion-resistant castings

CDA C63000 / DIN G-CuAl11Ni

• Composition: 86% Cu, 11% Al, 3% Ni
• Properties: Excellent mechanical properties
• Applications: Structural components, marine hardware

CDA C63200 / BS 1400 AB2 (Modified) / JIS CAC703 (ALBC3)

• Composition: 81% Cu, 10% Al, 4% Fe, 4.5% Ni, 0.5% Mn
• Chinese GB: ZCuAl9Fe4Ni4Mn2
• Italian UNI: G-CuAl9Fe4Ni4Mn
• Properties: Nickel-Aluminum Bronze (NAB), IMO approved
• Applications: Ship propellers, submarine components, offshore platforms

CDA C63400 / DIN G-CuAl10Fe2

• Composition: 87% Cu, 10% Al, 2% Fe, 1% Ni
• Applications: Valve components, pump parts

CDA C64200 / BS HTB1 / DIN G-CuAl11Fe6Ni6

• Composition: 77% Cu, 11% Al, 6% Fe, 6% Ni
• Properties: High tensile strength (700+ MPa), heat treatable
• Applications: High-performance marine propellers, aerospace

CDA C95200 / DIN G-CuAl9Fe4

• Composition: 88% Cu, 9% Al, 3% Fe
• Chinese GB: ZCuAl9Fe4
• JIS: CAC702
• Properties: Good strength and toughness
• Applications: Gears, bearings, marine fittings

CDA C95300 / DIN G-CuAl10Fe3

• Composition: 87% Cu, 10% Al, 3% Fe
• Chinese GB: ZCuAl10Fe3Mn2
• Applications: Pump impellers, valve components

CDA C95400 / BS AB1 / DIN G-CuAl10Fe5Ni5 / JIS CAC702

• Composition: 85% Cu, 11% Al, 4% Fe, 4% Ni
• Chinese GB: ZCuAl10Fe3Ni
• Italian UNI: G-CuAl10Fe5Ni
• IS: 291 Grade 3
• Properties: Excellent overall properties, seawater resistant
• Applications: Marine propellers, pump components, valve bodies, offshore equipment

CDA C95500 / DIN G-CuAl11Fe6Ni6 / JIS CAC703

• Composition: 79-81% Cu, 10.5-11.5% Al, 3.5-4.5% Fe, 4-5% Ni, 1% Mn
• Chinese GB: ZCuAl9Fe4Ni4Mn2
• Properties: High strength aluminum bronze
• Applications: Heavy-duty marine components

CDA C95600 / BS AB2 / DIN G-CuAl9Ni3Fe2

• Composition: 86% Cu, 9% Al, 3% Ni, 2% Fe
• Applications: Pump impellers, bearing bushings

CDA C95700 / DIN G-CuAl8Fe3

• Composition: 88% Cu, 8% Al, 3% Fe, 1% Ni
• Applications: General engineering castings

CDA C95800 / DIN G-CuAl10Fe5Ni5Mn / JIS CAC703A

• Composition: 79% Cu, 9% Al, 5% Ni, 4% Fe, 1.5% Mn, 1% Si
• Chinese GB: ZCuAl9Fe4Ni5Mn4
• BS: AB2 (Modified)
• Italian UNI: G-CuAl9Fe4Ni4Mn2
• Properties: Nickel-Aluminum-Manganese Bronze, superior cavitation resistance
• Applications: Naval propellers, hydrofoils, desalination equipment

SILICON BRONZE ALLOYS

CDA C87300 / DIN G-CuSi3Mn1 / BS SCB1

• Composition: 96% Cu, 3% Si, 1% Mn
• Chinese GB: ZCuSi3Mn1
• JIS: CAC406C
• Italian UNI: G-CuSi3Mn
• Properties: High fluidity, good corrosion resistance
• Applications: Sculptures, architectural hardware, valves

CDA C87400 / DIN G-CuZn4Si4MnP

• Composition: 88% Cu, 4% Si, 4% Zn, 4% Mn
• Properties: Good strength and castability
• Applications: Marine hardware, fittings

CDA C87500 / BS SCB3 / DIN G-CuSi4Zn4MnP

• Composition: 83% Cu, 4% Si, 4% Zn, 1% Mn, 8% others
• Chinese GB: ZCuZn16Si4
• JIS: CAC406B
• Properties: Excellent fluidity, corrosion resistant
• Applications: Pump impellers, valve bodies, marine components

CDA C87600 / DIN G-CuSi2Mn2Zn2

• Composition: 90% Cu, 2% Si, 2% Mn, 2% Zn, 4% others
• Applications: Pressure vessels, heat exchangers

CDA C87610 / Chinese GB ZCuSi3MnZn

• Composition: 91% Cu, 3% Si, 2% Mn, 3% Zn, 1% Fe
• Applications: Electrical components, marine fittings

CDA C87800 / DIN G-CuSi3Zn3Mn

• Composition: 87% Cu, 4% Si, 4% Zn, 1% Mn
• Chinese GB: ZCuZn40Si
• Properties: High strength silicon bronze
• Applications: Pressure-tight castings, valve components

JIS CAC406D (Silicon Brass)

• Composition: 80% Cu, 16% Zn, 4% Si
• Applications: General engineering, architectural

MANGANESE BRONZE ALLOYS (HIGH-STRENGTH BRASS)

CDA C86100 / BS HTB1 / DIN G-CuZn40Mn

• Composition: 60% Cu, 38% Zn, 1% Mn, 1% Fe
• Chinese GB: ZCuZn38Mn2Pb2
• JIS: CAC304 (HBsC1)
• Properties: High strength, good wear resistance
• Applications: Gears, worm wheels, structural components

CDA C86200 / BS HTB2 / DIN G-CuZn37Mn3Al2PbSi

• Composition: 63% Cu, 25% Zn, 3% Mn, 3% Al, 3% Fe, 2% Pb, 1% Si
• Chinese GB: ZCuZn25Al5Mn4Fe3
• JIS: CAC304A
• Properties: Manganese aluminum bronze, very high strength
• Applications: Heavy-duty gears, marine propellers

CDA C86300 / BS HTB3 / DIN G-CuZn25Al5Fe3Mn4

• Composition: 60-66% Cu, 20-27% Zn, 4-7% Al, 2-4% Mn, 2-5% Fe
• Chinese GB: ZCuZn25Al6Fe3Mn3
• JIS: CAC304B (HBsC2)
• Italian UNI: G-CuZn25Al5Fe3Mn
• Properties: Tensile 620 MPa, excellent wear resistance
• Applications: Gears, bushings, wear plates, marine hardware

CDA C86400 / DIN G-CuZn31Si

• Composition: 66% Cu, 31% Zn, 1% Si, 1% Mn, 1% Fe
• Properties: Good strength and machinability
• Applications: General engineering castings

CDA C86500 / BS HTB1 (Modified) / DIN G-CuZn33Pb2

• Composition: 63% Cu, 33% Zn, 2% Pb, 1% Mn, 1% Al
• Chinese GB: ZCuZn38Mn2Pb2
• Applications: High-speed gears, bushings

CDA C86700 / JIS CAC304C

• Composition: 57% Cu, 38% Zn, 1.5% Mn, 1.5% Al, 1% Fe, 1% Ni
• Properties: High-strength manganese brass
• Applications: Structural components, marine fittings

NICKEL-CONTAINING BRONZE ALLOYS

Copper-Nickel Alloys

CDA C96200 / DIN G-CuNi10Fe / BS CN1

• Composition: 88% Cu, 10% Ni, 2% Fe
• Chinese GB: ZCuNi10Fe1Mn
• JIS: CAC408 (CNC1)
• Italian UNI: G-CuNi10Fe1Mn
• Properties: Excellent seawater corrosion resistance
• Applications: Marine condensers, heat exchangers, desalination

CDA C96300 / DIN G-CuNi15Fe

• Composition: 83% Cu, 15% Ni, 2% Fe
• Applications: Marine piping, offshore components

CDA C96400 / BS CN2 / DIN G-CuNi30Fe / JIS CAC409

• Composition: 68% Cu, 30% Ni, 2% Fe
• Chinese GB: ZCuNi30Fe1Mn
• Italian UNI: G-CuNi30Fe1Mn
• Properties: Superior corrosion resistance, bio-fouling resistant
• Applications: Seawater systems, offshore platforms, ship hulls

CDA C96600 / DIN G-CuNi20Mn

• Composition: 75% Cu, 20% Ni, 5% Mn
• Applications: Marine hardware, corrosion-resistant components

CDA C96800 / Chinese GB ZCuNi30Mn1Fe

• Composition: 67% Cu, 30% Ni, 1% Mn, 1% Fe, 1% Zn
• Applications: Heat exchangers, marine components

Nickel-Tin Bronze

DIN G-CuNi5Sn / Chinese GB ZCuNi5Sn2

• Composition: 92% Cu, 5% Ni, 2% Sn, 1% Zn
• Properties: Good strength and corrosion resistance
• Applications: Marine fittings, electrical components

Nickel Silver (Copper-Nickel-Zinc)

CDA C97300 / DIN G-CuNi10Zn27 / BS NS1

• Composition: 57% Cu, 18% Ni, 25% Zn
• Chinese GB: ZCuZn25Ni10
• JIS: CAC402C
• Italian UNI: G-CuNi12Zn24
• Properties: Silver appearance, decorative
• Applications: Architectural hardware, decorative castings

CDA C97600 / DIN G-CuNi18Zn20 / BS NS2

• Composition: 55% Cu, 18% Ni, 27% Zn
• Chinese GB: ZCuZn27Ni18
• Properties: High corrosion resistance, aesthetic finish
• Applications: Valves, marine fittings, optical components

CDA C97800 / DIN G-CuNi9Sn2

• Composition: 88% Cu, 9% Ni, 2% Sn, 1% Zn
• Applications: Electrical components, springs

LEADED BRONZE ALLOYS (HIGH-MACHINABILITY)

CDA C93200 / BS LB2 / DIN G-CuSn7Zn4Pb7 / IS 305

• Composition: 83% Cu, 7% Sn, 7% Pb, 3% Zn
• Chinese GB: ZCuSn10Pb10
• JIS: CAC403A (BC3A)
• Italian UNI: G-CuSn7Pb7
• Properties: Excellent bearing properties, anti-friction
• Applications: Bushings, bearings, worm wheels

CDA C93400 / DIN G-CuSn10Pb10

• Composition: 80% Cu, 10% Sn, 10% Pb
• Chinese GB: ZCuSn10Pb10
• Applications: High-speed bearings, machine tool components

CDA C93500 / BS LB4 / DIN G-CuSn7Pb15

• Composition: 85% Cu, 5% Sn, 9% Pb, 1% Zn
• Chinese GB: ZCuSn5Pb5
• Properties: Superior machinability
• Applications: Bearings for high loads and low speeds

CDA C93600 / DIN G-CuPb10Sn

• Composition: 87% Cu, 10% Pb, 2% Sn, 1% Zn
• Applications: Bearing bushings, general engineering

CDA C93700 / BS LB5 / DIN G-CuSn10Pb5

• Composition: 80% Cu, 10% Sn, 10% Pb
• Chinese GB: ZCuSn10Pb5
• JIS: CAC402A (BC2A)
• Properties: High load bearing capacity
• Applications: Heavy-duty bearings, automotive bushings

CDA C93800 / DIN G-CuSn6Zn6Pb3

• Composition: 78% Cu, 6% Sn, 6% Zn, 6% Pb, 4% Ni
• Properties: Good machinability and strength
• Applications: Gears, valve components

CDA C94300 / Chinese GB ZCuPb15Sn8

• Composition: 75% Cu, 15% Pb, 8% Sn, 2% Zn
• Properties: Very high lead content for extreme machinability
• Applications: High-speed machining applications

CDA C94700 / DIN G-CuPb5Sn5Zn5

• Composition: 80% Cu, 5% Pb, 5% Sn, 5% Zn, 5% Ni
• Applications: Decorative castings, architectural hardware

BERYLLIUM BRONZE ALLOYS

CDA C82000 / DIN G-CuBe2 / BS PB101

• Composition: 98% Cu, 1.9% Be, 0.2% Co
• Chinese GB: ZCuBe2
• JIS: CAC801 (BeBRC1)
• Italian UNI: G-CuBe2
• Properties: Age hardenable to 400 HV, high strength, non-sparking
• Applications: Molds, dies, non-sparking tools, aerospace

CDA C82200 / DIN G-CuBe2Pb

• Composition: 97.5% Cu, 2% Be, 0.5% Pb
• Properties: Beryllium bronze with lead for machinability
• Applications: High-precision mold components

CDA C82400 / DIN G-CuCo2Be

• Composition: 97.5% Cu, 2% Co, 0.5% Be
• Properties: High electrical conductivity, age hardenable
• Applications: Electrical connectors, switch components

CDA C82500 / JIS CAC802 (BeBRC2)

• Composition: 97.8% Cu, 2% Be, 0.2% Ni
• Properties: Very high strength after aging
• Applications: Springs, pressure sensors, aerospace components

CDA C82800 / Chinese GB ZCuBe2.5

• Composition: 97.5% Cu, 2.5% Be
• Properties: Maximum age-hardening response
• Applications: Precision tooling, molds

SPECIALTY & PROPRIETARY BRONZE ALLOYS

Chromium Bronze

DIN G-CuCr1 / Chinese GB ZCuCr1

• Composition: 99% Cu, 1% Cr
• Properties: High electrical conductivity, age hardenable
• Applications: Resistance welding electrodes, electrical contacts

Bismuth Bronze

DIN G-CuBi / Chinese GB ZCuBi

• Composition: 98% Cu, 1-2% Bi
• Properties: Lead-free alternative, good machinability
• Applications: Plumbing components, drinking water applications

Tellurium Bronze

DIN G-CuTe1 / Chinese GB ZCuTe

• Composition: 99% Cu, 0.5% Te
• Properties: Excellent machinability, lead-free
• Applications: Free-cutting applications, electronics

Aluminum-Silicon Bronze

Chinese GB ZCuAl8Si2

• Composition: 90% Cu, 8% Al, 2% Si
• Properties: High strength, good castability
• Applications: Marine components, structural castings

Iron-Manganese Bronze

JIS CAC502 (MnBCl)

• Composition: 67% Cu, 25% Zn, 4% Mn, 3% Fe, 1% Al
• Properties: High-strength yellow bronze
• Applications: Structural components, gears

Cobalt-Bearing Bronze

DIN G-CuCo2Be / Chinese GB ZCuCo2Be

• Composition: 97% Cu, 2% Co, 0.5% Be
• Properties: High temperature strength, age hardenable
• Applications: Aerospace, high-temperature applications

Zinc-Free Bronze (Lead-Free Alternatives)

DIN G-CuSn12Ni2-C / Chinese GB ZCuSn10Ni2

• Composition: 88% Cu, 10% Sn, 2% Ni (lead-free, zinc-free)
• Properties: Compliant with lead-free regulations
• Applications: Potable water valves, food processing equipment

Indian Standard Proprietary Grades

IS 318 Grade G1, G2, G3 (Gunmetal Series)

• Various compositions for general engineering, pressure-tight applications

IS 28 (Phosphor Bronze Series)

• Grade PB1, PB2, PB4 for spring and bearing applications

IS 291 (Aluminum Bronze Series)

• Grade 1, 2, 3 for marine and corrosion-resistant applications

IS 305 (Bearing Bronze)

• High-leaded tin bronze for bearing applications

CROSS-REFERENCE QUICK GUIDE

Most Common International Equivalents

ADDITIONAL INTERNATIONAL STANDARDS COMPLIANCE

• European EN Standards: EN 1982 (Copper Alloy Ingots and Castings)
• ASTM Standards: B505, B584, B148, B271, B763, B806, B176
• SAE Standards: J461, J462, J463 (Automotive bronze specifications)
• Military Specifications: MIL-B-24480, MIL-C-22229, QQ-C-390
• Lloyd’s Register: Marine-grade aluminum bronze and gunmetal specifications
• ABS, DNV-GL, BV: Naval and offshore bronze certifications
• ASME Standards: SB-148, SB-271 (Pressure vessel bronze components)

Advanced Foundry Capabilities & Quality Control

Metallurgical Testing & Analysis

• Spectrometric Analysis: Optical emission spectroscopy (OES) for precise alloy composition verification
• Mechanical Testing: Universal testing machines for tensile, yield, elongation, hardness (Brinell, Rockwell, Vickers)
• Non-Destructive Testing (NDT): Radiography (RT), ultrasonic testing (UT), magnetic particle inspection (MPI), dye penetrant testing (PT)
• Metallography: Microstructure analysis, grain size determination, inclusion rating
• Pressure Testing: Hydrostatic and pneumatic testing up to 350 bar
• Chemical Analysis: ICP-OES, XRF for trace element detection

Heat Treatment & Surface Enhancement

• Solution Annealing: 400-950°C for stress relief and grain refinement
• Aging Treatment: Precipitation hardening for aluminum bronze and beryllium copper
• Stress Relieving: Thermal treatment at 250-350°C post-casting
• Surface Hardening: Flame hardening, induction hardening for wear-critical applications

Finishing Operations

• Machining: CNC turning, milling, drilling, boring to precision tolerances (±0.01mm)
• Surface Treatments: Shot blasting, tumbling, polishing (Ra 0.4-12.5 μm)
• Coating Systems: Powder coating, electroplating (nickel, chrome), patination for artistic bronzes
• Assembly Services: Complete sub-assembly with testing and certification

Industry Applications & Standards Compliance

Key Industries Served

• Marine & Shipbuilding: Propellers, rudders, valves, pumps, seacocks (Lloyd’s, ABS, DNV-GL certified)
• Oil & Gas: Wellhead components, valve bodies, pump casings (API 6A, NACE MR0175 compliant)
• Water Treatment: Pump impellers, valve components, fittings (NSF/ANSI 61 certified)
• Power Generation: Turbine components, electrical hardware, switchgear parts
• Automotive: Bearing bushings, synchronizer rings, electrical components
• Architectural: Decorative hardware, sculptures, fountains, ornamental castings
• Defense: Naval applications, ordnance components (Mil-Spec compliant)
• Aerospace: Specialized bushings, non-sparking tools, electrical connectors

Standards & Certifications

• IS Standards: IS 318 (Gunmetal), IS 28 (Phosphor Bronze), IS 191 (Aluminum Bronze)
• ASTM Standards: B505, B584, B148, B271, B427, B763, B806
• BS Standards: BS 1400 series (LB2, LB4, AB1, AB2, PB1, PB2, SCB3)
• DIN Standards: DIN 1705, DIN 17660, DIN 17662
• ISO Certification: ISO 9001:2015 Quality Management
• Material Certifications: Full material test certificates (MTC 3.1, 3.2) per EN 10204

Technical Specifications Summary

Casting Weight Range: 0.1 kg to 5000 kg
Dimensional Tolerance: ±0.1mm to ±1.0mm (process dependent)
Surface Finish: Ra 0.8 μm to Ra 25 μm
Wall Thickness: Minimum 2mm (investment casting) to 150mm (sand casting)
Annual Capacity: 2000+ tons bronze castings
Delivery: Prototype to mass production (1 piece to 100,000+ pieces annually)

Why Choose Our Bronze Foundry

✓ 40+ Years Foundry Experience in non-ferrous metallurgy
✓ Complete In-House Capabilities: Pattern making, casting, heat treatment, machining, testing
✓ Advanced Quality Systems: 100% dimensional inspection, material traceability
✓ Technical Expertise: Metallurgical engineers and certified foundry professionals
✓ Custom Alloy Development: Proprietary bronze compositions for specific applications
✓ Export Quality Standards: International packaging, documentation, logistics support
✓ Competitive Pricing: Direct manufacturer pricing with zero intermediaries
✓ Rapid Prototyping: 7-15 day sampling for investment castings

Contact Us for Bronze Casting Solutions

Request technical consultation, material recommendations, and competitive quotations for your bronze casting requirements. We provide complete engineering support from design optimization to final inspection.

Specializations: Marine bronze castings, Hotline clamp casting, Bronze marine grade fittings Thru Hulls, Nipples, Strainers, Bronze , Bronze Spade Connectors for transformers, Bronze transformer ground connectors, Bronze vise clamps, bronze Pipe clamps, Bronze ground rod clamps, Bronze earthing clamps, high-strength aluminum bronze, precision phosphor bronze bushings, artistic bronze sculptures, valve components, pump parts, bearing housings, custom alloy development.