

M1 copper (М1) is a high-conductivity, oxygen-free copper grade containing a minimum of 99.9% copper with trace silver, ensuring exceptional electrical and thermal performance. Known for its excellent corrosion resistance, plasticity, and workability, M1 is widely used across electrical, aerospace, defense, precision engineering, instrumentation, and renewable energy applications. At Russian Metals, we are trusted manufacturers and suppliers of M1 copper rods, providing a wide stock range for industries that demand premium copper products with stable conductivity and long service life. Our M1 rods are available in custom lengths, diameters, and finishes, and are supplied with full Mill Test Certificates (MTC) and global shipping support for both bulk and project-based requirements.
| Grade : | M1 ( М1 ) |
| Classification : | Tin-free pressure-worked bronzes |
| Element | Composition (%) |
|---|---|
| Cu + Ag | ≥ 99.90 |
| Fe | ≤ 0.005 |
| Ni | ≤ 0.002 |
| S | ≤ 0.004 |
| As | ≤ 0.002 |
| Pb | ≤ 0.005 |
| Zn | ≤ 0.004 |
| O | ≤ 0.05 |
| Sb | ≤ 0.002 |
| Bi | ≤ 0.001 |
| Sn | ≤ 0.002 |
Note: The very low levels of impurities in M1 copper make it ideal for high-precision electrical and mechanical applications.
| Assortment | Dimension | Direct. | σB | σT | δ5 | ψ | KCU | Heat treatment |
|---|---|---|---|---|---|---|---|---|
| - | (mm) | - | MPa | MPa | % | kJ/m² | - | - |
| Pipe, GOST 617-2006 | Ø 200 | 180-190 | 32 | |||||
| Wire, GOST 16130-90 | 350 | |||||||
| soft cold-rolled, GOST 1173-2006 | 200-260 | 42 | ||||||
| hard cold-rolled, GOST 1173-2006 | 290 | 6 |
| Brinell hardness for M1 ( М1 ) , soft GOST 1173-2006 ( 5pAX9-4 ), Bar GOST 1628-78 | HB 10 -1 = 55 MPa |
| Brinell hardness for M1 ( М1 ) , hard GOST 1173-2006 | HB 10 -1 = 95 MPa |
| Product Type | Tensile Strength (MPa) | Elongation (%) | Brinell Hardness (HB) |
|---|---|---|---|
| Pipe (GOST 617-2006) | 180–190 | 32 | – |
| Wire (GOST 16130-90) | 350 | – | – |
| Soft Cold-Rolled Sheet (GOST 1173-2006) | 200–260 | 42 | ~55 |
| Hard Cold-Rolled Sheet (GOST 1173-2006) | 290 | 6 | ~95 |
Friction coefficient (lubricated): 0.011
Friction coefficient (dry): 0.43
Excellent machinability for drawing, bending, and welding.
| Standard / Country | Equivalent Grade |
|---|---|
| USA | C11000, C12200 |
| Germany (DIN/WNr) | 2.0090 |
| France (AFNOR) | ECu57, ECu58 |
| England (BS) | C106 |
| Japan (JIS) | C1100, C1220 |
| Italy (UNI) | Cu-ETP, Cu-DHP |
M1 copper aligns closely with C11000 (ETP Copper) and C12200 in global standards.
| Friction coefficient with oil : | 0.011 |
| Friction coefficient without oil : | 0.43 |
| Melting temperature : | 1083 °C |
| Casting temperature : | 1150 - 1250 °C |
| Linear shrinkage : | 2.1 % |
| USA | Germany | Japan | France | England | European | Poland |
|---|---|---|---|---|---|---|
| - | DIN,WNr | JIS | AFNOR | BS | ISO | CSN |
| C11000 C12200 | 2.0090 ECu57 ECu58 | C1100 C1220 | Cu-B | C106 | Cu-ETP | Cu-DHP |
At Russian Metals, we keep a ready M1 alloy rod stock and can deliver custom sizes for bulk manufacturing.
Russian Metals is one of the leading M1 copper rod manufacturers in India. We provide high-purity M1 alloy rod stock, wires, pipes, and bars with quick delivery & expert guidance for your manufacturing and industrial needs.
σB - Tensile strength [MPa]
σT - Yield stress [MPa]
δ5 - Specific elongation at fracture [%]
ψ - Reduction of area [%]
KCU - Impact strength [kJ/m²]
HB - Brinell hardness [MPa]
T - Test temperature [Grade]
E - Young modulus [MPa]
α - Coefficient of linear expansion (20° - T) [1/Grade]
λ - Thermal (heat) condition coefficient [Watt/(m·Grade)]
ρ - Density [kg/m³]
C - Specific heat (range 20° - T) [J/(kg·Grade)]
R - Electrical resistance [Ohm·m]