IDENTIFICATION
Getig ST-21, ERCoCr-E
CLASSIFICATION
AWS/SFA 5.21: ERCOCr E
DESCRIPTION
Cobalt base alloy tig wire providing excellent resistance to metal-to-metal wear, thermal shocks, oxidised corrosive environments at high temperatures.
• Microstructure: Austenitic matrix with dispersed precipitation of small Cr and Mo Carbides.
• Machinability: Good
• Deposit thickness: Depends upon application and procedure used.
CHEMICAL ANALYSIS (RANGE) %
| C | Mn | Si | Cr | Ni | Mo | Fe | W | Co |
| 0.15-0.45 | 1.5 max | 1.5 max | 25-30 | 1.5-4.0 | 4.5-7.0 | 3.0 max | 0.5 max | Remainder |
TYPICAL APPLICATIONS
• Extrusion dies, hot working tools, turbine injectors, valve seats, ingot tong bits.
• Hardfacing of forging dies.
WELD METAL PROPERTIES
Hardness : 28-40 HRC
SHIELDING GAS : Pure argon or argon 98% + oxygen 2%
PACKING PARAMETERS
| Size (mm) | Length (mm) | Packing / Pkt (Kg) | Packing / Box (kg) |
| 3.15 / 3.20 | 1000 | 70 – 110 | 5 x 4 = 20 |
| 4 | 1000 | 100 – 130 | 5 x 4 = 20 |
| 4.8 | 1000 | 130 - 170 | 5 x 4 = 20 |
| 5 | 1000 | 130 - 170 | 5 x 4 = 20 |
