Chemical composition of round seamless tubes for heat exchangers, EN 12451
Round seamless tubes for heat exchangers, EN 12451
| Material | Chemical composition,% | Density 1) g/cm3 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Symbol | Number | Element | Cu | Al | As | C | Co | Fe | Mn | Ni | P | Pb | S | Sn | Zn | Others total | approx. |
| Cu-DHP | CW024A | min. max. | 99,90 2) | - | - | - | - | - | - | - | 0.015 | - | - | - | - | - | 8.9 |
| - | - | - | - | - | - | - | - | 0.040 | - | - | - | - | - | ||||
| CuAl5As 3) | CW300G 3) | min. max. | Rest | 4.0 | 0.1 | - | - | - | - | - | - | - | - | - | - | - | 8.2 |
| - | 6.5 | 0.4 | - | - | 0.2 | 0.2 | 0.2 | - | 0.02 | - | 0.05 | 0.3 | 0.3 | ||||
| CuNi10Fe1Mn 3) | CW352H 3) | min. max. | Rest | - | - | - | - | 1,0 5) | 0.5 | 9 | - | - | - | - | - | - | 8.9 |
| - | - | - | 0.05 | 0,1 4) | 2,0 5) | 1 | 11 | 0.02 | 0.02 | 0,05 6) | 0.03 | 0,5 6) | 0.2 | ||||
| CuNi30Fe2Mn2 3) | CW353H 3) | min. max. | Rest | - | - | - | - | 1.5 | 1.5 | 29.0 | - | - | - | - | - | - | 8.9 |
| - | - | - | 0.05 | 0,1 4) | 2.5 | 2.5 | 32.0 | 0.02 | 0.02 | 0,05 6) | 0.05 | 0,5 6) | 0.2 | ||||
| CuNi30Mn1Fe 3) | CW354H 3) | min. max. | Rest | - | - | - | - | 0.4 | 0.5 | 30.0 | - | - | - | - | - | - | 8.9 |
| - | - | - | 0.05 | 0,1 4) | 1.0 | 1.5 | 32.0 | 0.02 | 0.02 | 0,05 6) | 0.05 | 0,5 6) | 0.2 | ||||
| CuZn20Al2As 3) | CW702R 3) | min. | 76.0 | 1.8 | 0.02 | - | - | - | - | - | - | - | - | - | Rest | - | 8.4 |
| max. | 79.0 | 2.3 | 0.06 | - | - | 0.07 | 0.1 | 0.1 | 0.01 | 0.05 | - | - | - | 0.3 | |||
| CuZn28Sn1As | CW706R | min. max. | 70.0 | - | 0.02 | - | - | - | - | - | - | - | - | 0.9 | Rest | - | 8.5 |
| 72.5 | - | 0.06 | - | - | 0.07 | 0.1 | 0.1 | 0.01 | 0.05 | - | 1.3 | - | 0.3 | ||||
| CuZn30As | CW707R | min. max. | 69.0 | - | 0.02 | - | - | - | - | - | - | - | - | - | Rest | - | 8.5 |
| 71.0 | 0.02 | 0.06 | - | - | 0.05 | 0.1 | - | 0.01 | 0.07 | - | 0.05 | - | 0.3 | ||||
| 1. For information only. 2. Includes Ag (silver), up to a maximum of 0.015 %. 3. These alloys can be used for seawater applications. 4. Co (cobalt) up to a maximum of 0.1 % is counted as Ni (nickel). 5. For seawater applications, the composition limits shall be agreed between the buyer and the supplier [see 5 i)]. 6. When the product is intended for subsequent welding and is so specified by the buyer [see 5 m)], Zn (zinc) shall be max. 0.2 %, and S (sulfur) max. 0.02 %. | |||||||||||||||||