Copper
Copper is widely used in a variety of products that enable and enhance our everyday lives. It has excellent electrical and thermal conductivities, exhibits good strength and formability, has outstanding resistance to corrosion and fatigue, and is generally non-magnetic. Copper can be readily soldered and brazed, and many grades can be welded by various gas, arc and resistance methods. It can also be polished and buffed to almost any desired texture and luster. Pure copper is extensively used for electrical wire and cable, electrical contacts and other parts that are required to pass electrical current.
At Sridhar Steel and Engineering Co., we stock and supply copper pipes, tubes, flanges, fittings and fasteners in commercially pure grades and selected copper alloys.
Key Properties of Copper
Copper is a tough, ductile and malleable material. These properties make it extremely suitable for tube forming, wire drawing, spinning and deep drawing.
Other properties: Copper and copper alloys have a peculiar smell and disagreeable taste. These may be transferred by contact and therefore should be kept clear of foodstuffs, although some cooking pans do use these metals.
Copper & Copper Alloy Designations
| Alloy Family | Wrought | Cast |
|---|---|---|
| Copper | C10100 – C13000 | C80100 – C81200 |
| Brass | C20500 – C28580 | C83300 – C85800 |
| Tin Brass | C40400 – C48600 | C83300 – C84800 |
| Phosphor Bronze | C50100 – C52400 | C90200 – C91700 |
| Aluminum Bronze | C60800 – C64210 | C95200 – C95900 |
| Silicon Bronze | C64700 – C66100 | C87000 – C87999 |
| Silicon Red Brass | C69400 – C69710 | C87300 – C87900 |
| Copper Nickel | C70100 – C72950 | C96200 – C96900 |
| Nickel Silver | C73500 – C79900 | C97300 – C97800 |
Physical & Mechanical Properties (Pure Copper)
| Property | Typical Value |
|---|---|
| Chemical Symbol | Cu |
| Atomic Number | 29 |
| Atomic Mass | 63.546 u |
| Density | 8.96 g/cm³ |
| Melting Point | 1084.62°C (1984.32°F) |
| Boiling Point | 2562°C (4643.6°F) |
| Electrical Conductivity (20°C) | 58.0 × 10⁶ S/m |
| Thermal Conductivity (20°C) | 401 W/(m·K) |
| Specific Heat Capacity | 0.385 J/(g·K) |
| Young’s Modulus | 110 – 128 GPa |
| Shear Modulus | 48 – 55 GPa |
| Bulk Modulus | 130 – 140 GPa |
| Poisson’s Ratio | 0.34 – 0.36 |
| Tensile Strength (annealed) | 210 – 220 MPa |
| Yield Strength (annealed) | 205 – 220 MPa |
| Elongation at Break (annealed) | 30 – 60% |
| Hardness (Vickers, annealed) | 40 – 80 HV |
Note: Mechanical properties can vary depending on purity, temperature and processing methods. Annealed copper is heated to a specific temperature and then cooled slowly to remove internal stresses, making it softer and more ductile.
Copper Products We Offer
Pipes
- Types: Seamless & Welded Copper Pipes
- Grades: Commercially pure grades (C10100–C13000)
- Applications: Excellent for plumbing & refrigeration
- Advantage: High thermal & electrical conductivity
Tubes
- Types: Seamless & Welded Copper Tubes
- Applications: Ideal for heat exchangers & condensers
- Formability: Superior formability for bending & flaring
- Conditions: Available in annealed & hard-drawn conditions
Flanges
- Types: Forged & Cast Copper Flanges
- Styles: Slip-on, Weld-neck, Blind & Threaded
- Advantage: Corrosion-resistant for fluid systems
- Suitable For: Electrical & thermal applications
Fittings
- Types: Buttweld, Socketweld & Threaded Fittings
- Components: Elbows, Tees, Reducers, Caps, Couplings
- Joining: Excellent solderability & brazability
- Ideal For: Plumbing & HVAC systems
Fasteners
- Range: Bolts, Nuts, Washers & Screws
- Styles: Stud Bolts, Hex Head, Socket Head
- Advantage: Non-magnetic & corrosion resistant
- Options: Standard & custom designs available
Quality Testing & Value-Added Services
Material Test Certificate
All copper products supplied with complete MTC (EN 10204 3.1 / 3.2) as standard.
Third-Party Inspection
TUV, BV, DNV, SGS, Lloyds inspection available on request.
Dimensional & Visual
Full dimensional check and visual inspection against order requirements.
Custom Processing
Cutting, annealing, hard-drawing and special packaging available on request.
Industries & Applications Served
Need Custom Dimensions or Urgent Stock Dispatch?
All copper products are supplied with complete material test certificates (MTC). Third-party inspection is available on request. For technical data sheets, stock lists or bulk enquiries, please contact our sales team.
