ECoCrD-300-BR日本關西特殊溶接棒鈷基焊條
ECoCr-E日本關西特殊溶接棒鈷基焊條
KST-21日本關西特殊溶接棒鈷基焊條
| SPECIFICATIONS | CLASSIFICATIONS |
| AWS 5.13 | AWS ECoCr-E |
| ASME SFA 5.13 | UNS W73021 |
Oxford Alloy #21 Coated is a low carbon, molybdenum strengthened, cobalt-chromium alloy. This electrode is recommended for metal-to-metal abrasion and high impact applications involving high temperatures and/or corrosive media. Some typical applications are valves of all kinds, shear blades, hot punches and saw guides. Oxford Alloy #21 Coated is also used as hot die material because of its high temperature strength and stability. Its inherent resistance to galling (under self-mated conditions), cavitation erosion, and corrosion resistance have made it a popular fluid valve seat-facing alloy. The weld deposits of the Oxford Alloy #21 Coated are smooth and normally acquire mirror-like finish in use. The deposits retain wear resistance at high temperatures. This alloy is nonmagnetic and is not forgeable. It can be machined with carbide tools. Oxford Alloy#21 Coated bonds well with weldable alloy steels, including stainless.
| AWS Chemical ComPOSTTTION | ||||||
| C | Co | Cr | Mo | Ni | Mn | Si |
| 0.15-0.40 | Bal | 24-29 | 4.5- 6.5 | 2.0- 4.0 | 1.5 max | 2.0 max |
| W | Fe | OET | ||||
| 0.50 max | 5.0 max | 1.0 max | ||||
| TYPICAL MECHANICAL PROPERTIES | |
| Hardness: | 20-32 HRC |