Applicable Standards of Copper Tubes
| Nos. of Standards | Title |
|---|---|
| ASTM B360 | Hard-Drawn copper capillary tube for restrictor applications. |
| ASTM B280 | Seamless copper tube for air conditioning and refrigeration field service |
| ASTM B 75 | Seamless copper tube |
| ASTM B 68 | Seamless copper tube. Bright annealed. |
Chemical Composition
| C 10200 | 99.95 min. | — | OF |
|---|---|---|---|
| C 12200 | 99.90 min | 0.015~0.040 | DHP |
Mechanical Properties. Crystal Grain Size
| Standard Type of Material | Tensile Strength Ksi.(N/mm) | Elongation Percentage % | Grain Size (mm) |
|---|---|---|---|
| B68,B75,B280Soft Anneal | 30 min.(210 min.) | 40 min. | 0.040 min. |
| B68, B75Light Anneal | – | – | 0.015~0.040 |
| B 75Light Drawn | 36~47 (250~325) | – | – |
| B75, B280 Drawn | 36 min. (250 min.) | -. | -. |
| B 75Hard Drawn | 45 min.(310 min.) | – | – |
| B 360Hard Drawn | 57~75 (395~515) | – | – |