Selectarc 25/20B
CEWELD® 4842 Kb is for the dissimilar welding of heat-resistant rolled, forged and cast steels. Common applications include industrial furnaces, annealing chambers, systems for treating molten salts and boiler parts as well as heat exchangers.
CEWELD® 4842 Kb is for the dissimilar welding of heat-resistant rolled, forged and cast steels. Common applications include industrial furnaces, annealing chambers, systems for treating molten salts and boiler parts as well as heat exchangers.
CEWELD® 4842 Kb has good general oxidation resistance due to its high Cr content, especially at high temperatures. The alloy is fully austenitic and therefore sensitive to hot cracking in the 650-900°C temperature range. The temperature limits for use under intermittent oxidation depend on the frequency of cycling. In general, the alloy is resistant to scaling up to 1200°C. This alloy can withstand relatively strong thermal shocks and is therefore superior to type 309 L. Cold toughness down to - 196°C.
1.4823, 1.4826, 1.4828, 1.4832, 1.4840, 1.4841, 1.4846, 1.4848, 1.4837, 1.4710, 1.4713, 1.4724, 1.4726, 1.4742, 1.4745, 1.4762, 1.4845, 1.4740
X15CrNiSi25-21, X8CrNi25-21, X15CrNiSi20-12, GX15CrNi25-20, X40CrNi25-21, GX40CrNiSi22-10, X10CrAlSi7, X10CrAlSi13, X10CrAlSi18, X10CrAlSi25, GX30CrSi7, GX40CrSi17
AISI 305, 310, 314, ASTM A297 HF, A297 HJ
| Heat Treatment |
RP0,2 (MPa) |
Rm (MPa) |
A5 (%) |
Impact Energy (J) ISO-V | Hardness | |
|---|---|---|---|---|---|---|
| RT | -196°C | |||||
| As Welded | 380 | 570 | 30 | 75 | 37 | HRc |