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Brass Foils – Ultra-Thin Precision Brass Sheets for Electrical, Electronic & Industrial Applications
Product Overview
Brass Foils supplied by R V Metal Corporation are ultra-thin, high-precision rolled brass products engineered for applications where excellent electrical conductivity, formability, corrosion resistance, and dimensional accuracy are critical. Manufactured from premium brass grades such as CuZn30, CuZn37, lead-free brass, and special alloy variants, these foils are produced through controlled cold-rolling and annealing processes to achieve consistent thickness, superior surface finish, and uniform mechanical properties.
Our brass foils are available in soft (annealed), half-hard, and hard tempers, making them suitable for deep drawing, stamping, etching, bending, shielding, and decorative applications. With thicknesses extending down to micron levels, R V Metal Corporation’s brass foils are widely used in electrical connectors, EMI/RFI shielding, battery components, precision shims, nameplates, gaskets, architectural laminates, and high-end decorative finishes.
Each coil or sheet of brass foil is supplied with strict thickness tolerance, excellent flatness, and uniform grain structure, ensuring reliable performance in high-speed automated manufacturing and precision engineering environments. Custom widths, tempers, finishes, and packaging options are available to meet OEM, EPC, and export-market requirements.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Form | Rolled Brass Foils (Coils / Cut Sheets) |
| Available Brass Grades | CuZn30, CuZn37, CuZn40, Lead-Free Brass, DZR Brass (on request) |
| UNS Designations | C26000, C26800, C27200, C27450, C28000 |
| Thickness Range | 0.02 mm to 0.50 mm (20 microns to 500 microns) |
| Width Range | 10 mm to 600 mm (custom widths available) |
| Length / Coil ID | Coils: As per weight requirement / Sheets: Cut-to-length |
| Temper Conditions | Soft (O), Half-Hard (H02), Hard (H04) |
| Manufacturing Process | Cold Rolled & Annealed |
| Surface Finish | Bright Rolled, Matte, Mill Finish |
| Thickness Tolerance | As per ASTM / EN / IS standards or tighter on request |
| Flatness | Excellent flatness suitable for precision stamping & etching |
| Edge Condition | Slit Edge / Deburred Edge |
| Electrical Conductivity | Approx. 26–30 % IACS (grade dependent) |
| Density | 8.40 – 8.60 g/cm³ (depending on alloy) |
| Applicable Standards | ASTM B36 / B134, EN 1652, IS 410 |
| Packaging | Moisture-Protected, Wooden Pallet / Export Packing |
| Customisation | Thickness, Width, Temper, Finish & Coil Weight as per OEM drawing |
Chemical Composition
| Brass Grade | UNS Code | Copper (Cu) % | Zinc (Zn) % | Lead (Pb) % | Iron (Fe) % | Other Elements |
|---|---|---|---|---|---|---|
| Cartridge Brass | C26000 (CuZn30) | 68.5 – 71.5 | Balance | ≤ 0.07 | ≤ 0.05 | Trace impurities only |
| Common Brass | C26800 (CuZn33) | 65.0 – 68.0 | Balance | ≤ 0.07 | ≤ 0.05 | Trace impurities only |
| Yellow Brass | C27200 (CuZn37) | 62.0 – 65.0 | Balance | ≤ 0.07 | ≤ 0.05 | Trace impurities only |
| Commercial Brass | C27450 (CuZn38) | 60.0 – 63.0 | Balance | ≤ 0.07 | ≤ 0.05 | Trace impurities only |
| Muntz Metal | C28000 (CuZn40) | 59.0 – 62.0 | Balance | ≤ 0.08 | ≤ 0.10 | Trace impurities only |
| Lead-Free Brass | C27400 / C69300 | 60.0 – 75.0 | Balance | ≤ 0.10 | ≤ 0.05 | Bi / Si (controlled additions) |
| DZR Brass | C35200 / CW602N | 60.0 – 63.0 | Balance | ≤ 0.10 | ≤ 0.10 | As ≤ 0.15 (Dezincification resistance) |
UNS Codes & Grades
| Brass Foil Grade (Common Name) | UNS Code | EN / DIN Designation | IS Standard | Nominal Composition | Key Characteristics |
|---|---|---|---|---|---|
| Cartridge Brass Foil | C26000 | CW505L | IS 410 CuZn30 | Cu 70% / Zn 30% | Excellent cold workability, deep drawing, forming |
| Common Brass Foil | C26800 | CW508L | IS 410 CuZn33 | Cu 67% / Zn 33% | Balanced strength and ductility |
| Yellow Brass Foil | C27200 | CW509L | IS 410 CuZn37 | Cu 63% / Zn 37% | Good strength, economical, decorative finish |
| Commercial Brass Foil | C27450 | CW510L | IS 410 CuZn38 | Cu 62% / Zn 38% | Higher strength, good corrosion resistance |
| Muntz Metal Foil | C28000 | CW721R | IS 410 CuZn40 | Cu 60% / Zn 40% | High strength, marine & industrial suitability |
| Lead-Free Brass Foil | C27400 / C69300 | CW724R | IS 4413 | Cu-Zn with Bi/Si | Eco-compliant, potable water applications |
| DZR Brass Foil | C35200 | CW602N | IS 318 LTS2 | Cu-Zn-As | Excellent dezincification resistance |
| Red Brass / Gilding Metal Foil | C23000 | CW502L | IS 410 CuZn15 | Cu 85% / Zn 15% | High ductility, corrosion resistance, decorative |
Mechanical, Physical & Fabrication Properties
| Property | Gilding / Red Brass Foil (C23000) |
Cartridge Brass Foil (C26000) |
Common / Yellow Brass Foil (C26800 / C27200) |
Commercial Brass Foil (C27450) |
Muntz Metal Foil (C28000) |
DZR / Lead-Free Brass Foil (CW602N / C69300) |
|---|---|---|---|---|---|---|
| Density (g/cm³) | 8.75 | 8.53 | 8.47 | 8.45 | 8.39 | 8.40 – 8.55 |
| Tensile Strength (MPa) | 250 – 330 | 300 – 380 | 350 – 450 | 380 – 480 | 450 – 550 | 420 – 520 |
| Yield Strength (MPa) | 90 – 150 | 120 – 180 | 150 – 250 | 180 – 280 | 250 – 350 | 220 – 320 |
| Elongation (%) | 45 – 55 | 40 – 50 | 30 – 40 | 25 – 35 | 15 – 25 | 20 – 30 |
| Hardness (HV) | 60 – 90 | 70 – 110 | 90 – 130 | 100 – 140 | 120 – 160 | 110 – 150 |
| Electrical Conductivity (% IACS) | 28 – 32 | 26 – 30 | 24 – 28 | 23 – 27 | 22 – 26 | 18 – 25 |
| Thermal Conductivity (W/m·K) | 140 – 150 | 120 – 130 | 115 – 125 | 110 – 120 | 105 – 115 | 95 – 115 |
| Cold Workability | Excellent | Excellent | Very Good | Good | Moderate | Good |
| Deep Drawing Capability | Excellent | Excellent | Very Good | Good | Limited | Moderate |
| Bendability | Excellent | Excellent | Very Good | Good | Fair | Good |
| Soldering & Brazing | Excellent | Excellent | Very Good | Very Good | Good | Very Good |
| Weldability | Good | Good | Moderate | Moderate | Limited | Moderate |
| Machinability | Fair | Fair | Good | Good | Good | Moderate |
| Corrosion Resistance | Excellent | Very Good | Good | Good | Moderate | Excellent (DZR / potable-grade) |
| Typical Temper Supplied | O (Annealed) | O / H02 | O / H02 / H04 | H02 / H04 | H04 / H08 | O / H02 |
Common Names & International Identifiers
| Brass Foil Type | Common / Trade Names | UNS (USA) | EN / DIN (Europe) | ISO (Generic Identifier) | JIS (Japan) | Typical Use Identifier |
|---|---|---|---|---|---|---|
| Gilding / Red Brass Foil | Gilding Metal, Red Brass Foil, 95/5 Brass Foil | C23000 | CuZn15 (CW502L) | CuZn15 | C2300 | Decorative foil, stampings, nameplates, EMI shielding |
| Cartridge Brass Foil | Cartridge Brass, 70/30 Brass Foil, Deep Drawing Brass | C26000 | CuZn30 (CW505L) | CuZn30 | C2600 | Deep drawn parts, radiator fins, electrical & hardware foils |
| Common / Yellow Brass Foil | Yellow Brass, 65/35 Brass Foil, General Purpose Brass | C26800 / C27200 | CuZn33 (CW506L) / CuZn37 (CW508L) | CuZn33 / CuZn37 | C2680 / C2720 | Stamping, forming, general industrial foils |
| Commercial Brass Foil | Commercial Brass, 60/40 Brass Foil | C27450 | CuZn36 (CW507L) / CuZn37 (CW508L) (closest equivalents) | CuZn36 / CuZn37 | C2700 (closest equivalent) | Stampings, presswork, economical general-purpose foils |
| Muntz Metal Foil | Muntz Metal, 60/40 Brass, Naval Sheet Brass (trade usage) | C28000 | CuZn40 (CW509L) (closest equivalent) | CuZn40 | C2801 (closest equivalent) | Harder foils for wear parts, marine/industrial applications |
| DZR Brass Foil | DZR Brass, Dezincification Resistant Brass Foil | (Common DZR refs) C35200 / C35300* (varies by standard) | CW602N (EN 12164/12168) | CuZn36Pb2As (typical DZR family) | — | Potable water, fittings, corrosion-critical environments |
| Lead-Free Brass Foil | Lead-Free Brass, Eco Brass, Low-Lead Brass Foil | C69300 (common lead-free plumbing alloy) | CW724R / CW511L (depends on alloy family & form) | CuZn21Si3P (typical silicon brass family) | — | RoHS/low-lead components, drinking-water & green compliance parts |
Standards & International Equivalents
| Brass Foil Grade / Family | UNS (ASTM / USA) | EN (Europe) Material No. | EN Designation | DIN (Legacy Ref.) | JIS (Japan) | ISO / Generic Identifier | Typical Product Standards (Foil / Strip) |
|---|---|---|---|---|---|---|---|
| Gilding Metal (High-Cu Brass Foil) | C23000 | 2.0240 | CuZn15 (CW502L) | CuZn15 | C2300 | CuZn15 | ASTM B36/B36M (sheet/strip/plate), EN 1652 (strip for general purposes) |
| Cartridge Brass Foil (Deep Drawing) | C26000 | 2.0265 | CuZn30 (CW505L) | CuZn30 | C2600 | CuZn30 | ASTM B36/B36M, EN 1652 |
| Yellow Brass Foil (General Purpose) | C26800 / C27200 | 2.0280 / 2.0321 | CuZn33 (CW506L) / CuZn37 (CW508L) | CuZn33 / CuZn37 | C2680 / C2720 | CuZn33 / CuZn37 | ASTM B36/B36M, EN 1652 |
| Commercial Brass Foil (Economical) | C27450 (common) / C28000 (as applicable) | 2.0320 / 2.0360 (as applicable) | CuZn36 (CW507L) / CuZn40 (CW509L) | CuZn36 / CuZn40 | C2700 / C2801 (closest refs.) | CuZn36 / CuZn40 | ASTM B36/B36M, EN 1652 |
| Muntz Metal Foil | C28000 | 2.0360 | CuZn40 (CW509L) | CuZn40 | C2801 (closest ref.) | CuZn40 | ASTM B36/B36M, EN 1652 |
| DZR Brass Foil (Dezincification Resistant) | (Common refs.) C35300 / C35200* (depends on spec) | 2.0362 | CW602N | CuZn36Pb2As (typical family) | — | CuZn36Pb2As (typical family) | EN 12164/12168 (wrought products), EN 1652 (strip where applicable) * |
| Lead-Free Brass Foil (Low-Lead / Eco) | C69300 (common lead-free alloy) | (varies by alloy) | CW724R / other lead-free families (as specified) | (varies) | — | (e.g., CuZn21Si3P family) | ASTM B36/B36M (if supplied as sheet/strip), EN 1652 / EN 12164 (as applicable) |
Applications
| Brass Foil Grade / Family | Typical Alloy Examples (UNS / EN) | Best-Suited Applications | Why This Grade Is Used | Common End-User Industries |
|---|---|---|---|---|
| Gilding Metal (High-Cu Brass Foil) | C23000 / CuZn15 (CW502L) | Decorative laminations & trims, nameplates, badges, labels, stampings, clock/dial components, EMI shielding foils (non-critical), luxury packaging foils & inserts | High copper content gives superior formability, rich golden tone, good corrosion resistance, clean stamping finish | Luxury goods, signage, consumer products, decorative hardware |
| Cartridge Brass Foil (Deep Drawing) | C26000 / CuZn30 (CW505L) | Deep-drawn parts, precision stampings, battery can/terminal parts (non-Li critical), connector shells, HVAC & appliance small formed parts, caps & sleeves, thin washers | Excellent deep drawability, good strength–ductility balance, stable forming behavior | Electrical, appliance, automotive ancillaries, general engineering |
| Yellow Brass Foil (General Purpose) | C26800 / CuZn33 (CW506L) C27200 / CuZn37 (CW508L) |
General stampings, clips, spring-like non-critical parts, shims, spacers, gaskets (non-high-temp), decorative foils, instrument components, small housings | Cost-effective, good formability, good conductivity, easy soldering/brazing (process-controlled) | Electrical, hardware, instrumentation, consumer products |
| Commercial Brass Foil (Economical) | CuZn36 (CW507L) / CuZn40 (CW509L) (UNS varies by spec) |
High-volume stampings where deep draw is moderate, decorative wrappers, low-load parts, low-cost shielding, general purpose foils for laminations and non-critical formed components | Lower cost, adequate formability for moderate forming, good appearance after finishing | Hardware, light engineering, packaging, decorative & consumer items |
| Muntz Metal Foil | C28000 / CuZn40 (CW509L) | Corrosion-exposed decorative components, marine-adjacent decorative parts, architectural trims, wear plates/liners in light duty, washers & spacers | Good strength, decent corrosion resistance, durable surface after coating/finishing | Architecture, marine decorative hardware, engineering components |
| DZR Brass Foil (Dezincification Resistant) | CW602N (EN) (UNS depends on ordered alloy) |
Water-contact parts in aggressive waters, plumbing & sanitary hardware liners, valve/fixture components (thin parts), potable water system parts where DZR is required | Designed to resist dezincification in chlorides/temperature cycling; improves service life in water systems | Plumbing, sanitary, building services, water distribution |
| Lead-Free / Eco Brass Foil (Low-Lead) | C69300 (common) / Lead-free EN families (as specified) | Drinking-water compatible components (as per customer regulation), “green” hardware, low-lead electrical and general stampings, consumer products requiring low lead content | Meets low-lead regulatory requirements; safer for potable contact applications when specified correctly | Plumbing, consumer hardware, OEM components, exports to regulated markets |
| High-Strength / Spring Temper Brass Foil (Temper Variant) | Typically C26000 / C26800 / CW5xx in H-temper | Clips, contacts (non-high-current), shims, spring washers, retaining rings, EMI fingers (light duty), battery contact springs (non-critical), watch/precision springs (light) | Higher temper increases yield strength and resilience while keeping stampability | Electrical, electronics, precision parts, automotive electrical |
Standard Brass Foils Dimensional Chart
| Parameter | Standard Supply Range (Typical) | Notes (EPC / OEM Use) |
|---|---|---|
| Material Grades (Brass Foil Families) | CuZn15 / CuZn30 / CuZn33 / CuZn37 / CuZn40, DZR variants, Lead-Free variants | Grade selection depends on forming depth, corrosion environment, and regulatory requirements. |
| Thickness Range | 0.02 mm to 0.50 mm | Below 0.10 mm typically treated as “foil”; 0.10–0.50 mm often ordered as thin strip. |
| Thickness Tolerance (Typical) | ±0.003 mm (0.02–0.05) | ±0.005 mm (0.06–0.10) | ±0.010 mm (0.11–0.30) | ±0.015 mm (0.31–0.50) | Actual tolerance must be confirmed as per ordered standard (EN/ASTM/IS) + temper + width. |
| Width Range | 10 mm to 1000 mm | Slit widths as per customer drawing; edge condition impacts stamping/feeding. |
| Width Tolerance (Typical) | ±0.10 mm (≤100 mm) | ±0.20 mm (101–400 mm) | ±0.30 mm (401–1000 mm) | For progressive dies / high-speed stamping, specify tighter width + camber limits. |
| Form | Coil (standard) | Cut lengths / sheets (on request) | Foil is generally supplied in coil for consistent feeding and reduced handling damage. |
| Coil ID (Inner Diameter) | 200 / 250 / 300 / 400 mm (common) | Match to decoiler mandrel. Smaller ID increases set-memory on thin foils. |
| Coil OD (Outer Diameter) | Up to ~1200 mm (typical, depends on thickness/weight) | OD is limited by handling, packaging, and customer decoiler capacity. |
| Coil Weight (Typical) | 25 kg to 500 kg (customizable) | Specify maximum coil weight for forklift/hoist limits and line loading. |
| Temper / Condition | O (Annealed/Soft), H02 (1/2 Hard), H04 (Hard), H08 (Extra Hard) | Temper selection affects springback, drawability, and die wear. |
| Edge Condition | Slit edge (standard) | Deburred / Rounded edge (on request) | Deburred edges reduce tool damage and improve safety on thin gauges. |
| Surface Finish | Mill finish (standard) | Bright rolled | Degreased | Coated (on request) | For plating/lamination, specify surface cleanliness + oil type/limit. |
| Packaging | Moisture-proof wrap + protective paper/film + wooden/ply pallet | For export: VCI/anti-tarnish + humidity control recommended. |
| Thickness (mm) | Theoretical Weight (kg/m²) | Theoretical Weight @ 1000 mm Width (kg per running meter) | Quick Note |
|---|---|---|---|
| 0.02 | 0.17 | 0.17 | Ultra-thin foil (handling care required) |
| 0.03 | 0.26 | 0.26 | Common for laminations / light stampings |
| 0.05 | 0.43 | 0.43 | Good balance of formability and strength |
| 0.08 | 0.68 | 0.68 | Often used for shims and formed parts |
| 0.10 | 0.85 | 0.85 | Transition from “foil” to thin strip |
| 0.15 | 1.28 | 1.28 | Stampings / washers / spacers |
| 0.20 | 1.70 | 1.70 | General thin strip applications |
| 0.25 | 2.13 | 2.13 | Better stiffness, less wrinkling in feed |
| 0.30 | 2.55 | 2.55 | Common for robust stampings |
| 0.40 | 3.40 | 3.40 | High stiffness; confirm bend radius |
| 0.50 | 4.25 | 4.25 | Thin strip; usually ordered as strip not foil |
NOTE (Theoretical Weight Calculations):
The above weights are theoretical and based on a typical brass density of 8.50 g/cm³ (≈ 8500 kg/m³).
Formulas:
• kg/m² = 8.50 × Thickness(mm)
• kg per running meter = (kg/m²) × Width(m)
• Coil weight (kg) = (kg/m²) × Width(m) × Length(m)
Actual coil weight may vary with alloy family (CuZn15/30/37/40), temper, and rolling tolerances. For EPC/OEM projects, specify the ordered standard + tolerances + maximum coil weight + coil ID to avoid decoiler and stamping-line issues.
The above weights are theoretical and based on a typical brass density of 8.50 g/cm³ (≈ 8500 kg/m³).
Formulas:
• kg/m² = 8.50 × Thickness(mm)
• kg per running meter = (kg/m²) × Width(m)
• Coil weight (kg) = (kg/m²) × Width(m) × Length(m)
Actual coil weight may vary with alloy family (CuZn15/30/37/40), temper, and rolling tolerances. For EPC/OEM projects, specify the ordered standard + tolerances + maximum coil weight + coil ID to avoid decoiler and stamping-line issues.
