Copper Sheet Metal Pressed Parts Manufacturer

Jamnagar Brass Components is an experienced manufacturer of copper sheet metal pressed parts serving electrical, electronics, power distribution, and thermal management industries worldwide. We press, stamp, form, and fabricate copper sheet components from high-conductivity ETP (Electrolytic Tough Pitch) copper, oxygen-free copper (OF/OFC), and phosphorus-deoxidised copper (DHP/PDC). Our press shop handles copper sheet from 0.3 mm to 6 mm thickness, producing precision components for US, UK, European, and Australian clients.

Copper Grades for Sheet Metal Work — International Equivalents

Grade Name	UNS (USA)	EN (Europe)	BS (UK)	IS (India)	Min. Conductivity
ETP Copper	C11000	CW004A	C101	Cu-ETP	100% IACS
Oxygen-Free (OF)	C10200	CW008A	C103	Cu-OF	100% IACS
DHP / PDC Copper	C12200	CW024A	C106	Cu-DHP	≥85% IACS
High Conductivity (HC)	C10100	CW009A	C101	Cu-ETP1	101% IACS
Free-Machining Cu	C14500	CW118C	—	—	≥93% IACS

Copper Pressed Parts We Manufacture

Copper Bus Bars and Bus Bar Blanks

Stamped and cut copper bus bars and blanks in ETP C11000 for panel boards, switchgear, and transformer connections. Available flat, L-shaped, or custom profiled, with punched or drilled holes per customer layout.

Copper Electrical Terminals and Contact Plates

Precision-stamped copper terminals, connector tabs, spring contacts, and contact plates for relays, circuit breakers, and power connectors. Available tin-plated or silver-plated for improved solderability and corrosion resistance.

Copper Heat Sinks and Heat Spreaders

Copper’s exceptional thermal conductivity (401 W/m·K) makes it ideal for heat spreaders and heat sinks in power electronics. We press and machine copper heat sink bases and cold plates for LED drivers, IGBTs, and RF modules.

Copper RF and EMI Shielding Components

Copper cans, covers, lids, and frames for RF/EMI shielding of PCB sub-circuits, formed from ETP or OFC copper sheet, with finger stock or gasket channels as required.

Copper Washers and Gaskets

Blanked copper washers for sealing plug ports, hydraulic unions, and pipe fittings. Available in ETP, DHP, or annealed soft copper, to BS 4320, DIN 7603, or custom dimensions.

Copper Stampings for Transformers

Custom copper stampings — transformer winding tabs, coil connectors, terminal plates, and lamination clamps — for transformer and inductor manufacturers.

Applications of Copper Sheet Metal Components

• Electrical switchgear and busbar trunking systems
• Power distribution boards and panels
• Transformer winding connections and jumpers
• Motor control centres and VFDs
• EV charging infrastructure components
• PCB and power module heat spreaders
• RF/microwave shielding enclosures
• Plumbing press-fit fittings and sealing washers

Why Choose Jamnagar Brass Components for Copper Pressed Parts?

• Copper specialists — decades of experience pressing ETP, OFC, and DHP copper alloys
• High conductivity supply — all ETP C11000 copper sourced with conductivity certification ≥100% IACS
• Precision stamping — burr-free edges and tight tolerances to ±0.05 mm
• Plating options — tin, silver, nickel plating with adhesion and thickness testing
• ISO 9001:2015 quality management — full dimensional and conductivity reports
• Custom packaging — anti-oxidation packaging (VCI film) to prevent tarnishing in transit
• Competitive pricing — significant cost advantage for US and European buyers
• Fast prototyping — laser-cut copper samples within 5–7 working days

Frequently Asked Questions — Copper Sheet Metal Parts

Q1: What is ETP copper and why is it used for electrical sheet metal parts?

ETP (Electrolytic Tough Pitch) copper, UNS C11000, contains minimum 99.9% copper and has electrical conductivity of 100% IACS (International Annealed Copper Standard) — the benchmark for copper electrical conductivity. It combines maximum conductivity with excellent cold formability, making it the universal choice for bus bars, terminals, contacts, and heat spreaders where both conductivity and press-formability are required.

Q2: What copper sheet thicknesses do you press and stamp?

We press copper sheet from 0.3 mm foil up to 6 mm thick. For bus bar applications, we also process copper flat bar from 6 mm to 15 mm using saw-cutting, milling, and drilling. High-speed blanking and progressive stamping operates efficiently in the 0.3–3 mm range. Heavier copper (3–6 mm) is pressed on hydraulic presses with robust tooling and slower cycle rates.

Q3: Can copper stampings be tin-plated?

Yes. Tin plating is the most common surface treatment on copper stampings. Bright tin (5–15 µm) prevents surface oxidation and improves solderability and contact electrical resistance. Matte tin (8–20 µm) is preferred for tin-whisker-sensitive electronics applications. All tin plating is applied per ASTM B545 and IPC-A-610. We can also supply nickel-plated, silver-plated, and gold-plated copper parts.

Q4: What ASTM standards apply to copper sheet and pressed parts?

Key ASTM standards include: ASTM B152 (copper sheet, strip, plate, and rolled bar), ASTM B187 (copper bar, bus bar), ASTM B19 (cartridge brass — not copper), and ASTM B3/B8 (wire). For European customers, EN 1652 covers copper sheet and strip. We supply MTC per these standards confirming min 99.9% copper content and conductivity ≥100% IACS.

Q5: What is the best packaging for copper sheet metal parts to prevent tarnishing?

Copper tarnishes rapidly in air and humidity. We package all copper components in VCI (Volatile Corrosion Inhibitor) polybags or wrap, which emit a protective vapour that prevents surface oxidation during storage and transit. For export shipments, parts are further packed in moisture-sealed cartons with silica gel desiccant. Plated parts are individually bagged to prevent contact corrosion.

Q6: Can you supply copper bus bar blanks cut to custom sizes?

Yes. Copper flat bar bus blanks in ETP C11000 are cut from 25×3 mm up to 150×15 mm cross-section, in any length from 50 mm to 3000 mm. Holes are drilled or punched per customer bolt pattern. Edges are deburred and chamfered. Tin plating is available. We supply to ASTM B187 (bus bar) or EN 13601 with MTC confirming conductivity and composition.

Q7: What is the thermal conductivity of ETP copper and why does it matter?

ETP copper has a thermal conductivity of 401 W/m·K, second only to silver among common metals. This makes it the material of choice for heat spreaders, cold plates, and heat sinks in power electronics. A copper heat spreader under an IGBT module or LED array draws heat away from the junction 10× faster than aluminium, significantly reducing operating temperature and extending device life.

Q8: Do you manufacture copper EMI shielding cans and enclosures?

Yes. We form copper cans, lids, and covers for RF/EMI shielding of PCB sub-circuits from ETP or oxygen-free copper sheet. Copper provides 10–15 dB better shielding effectiveness than aluminium at frequencies above 1 GHz due to its higher conductivity. Available with press-in finger stock, clips, or solder tab attachment. Tin plating is optional for improved solderability.

Q9: Can you supply oxygen-free copper (OFC) sheet metal parts?

Yes. Oxygen-free copper C10200 (OF) and C10100 (OFE — 99.99% pure) are available for applications requiring superior hydrogen embrittlement resistance (vacuum furnace components), very high conductivity (RF/microwave connectors), or audiophile-grade cable terminations. OFC commands a 30–50% premium over ETP but is specified when its specific properties are required.

Q10: What is the minimum order quantity for copper sheet metal parts?

Laser-cut copper prototypes: from 5 pieces, no tooling required, 5–7 day delivery. Press tool stamped parts: minimum 500–2,000 pieces for first production run. Bus bar and terminal bar cutting with drilling: from 50 pieces. For regular production, blanket annual orders with monthly releases give the best unit pricing and guaranteed capacity. Contact us with your drawings for a no-obligation quote.