ST-WELD Type | Flux | Typical chemical composition % | Hardness | Microstructure | Machinability | Main properties and typical application(TA) |
ST-WELD611-S | ST-SF20 | C:0.80~1.00 Si:0.50~0.90 Mn:0.80~1.50 Fe:42.00~47.00 else:3.00~4.00 Ni:rest | 200~250HB | Austenite | ☆☆☆☆ | Deposited metal is Fe-Ni alloy,especially for welding and repairing of cast iron with large size |
ST-WELD612-O | ———— | C:1.40~1.70 Si:0.80~1.30 Mn:3.50~4.50 Fe:42.00~47.00 else:2.00~3.50 Ni:rest | 170~210HB | Austenite | ☆☆☆☆ | Deposited metal is Fe-Ni alloy,for welding of grey and ductile cast iron,welding between cast irons or cast iron-steel .No need for preheating .Long and narrow weld is required. |
ST-WELD613-G | ———— | C:0.20~0.40 Si:0.10~0.50 Mn:9.50~10.50 Fe:42.00~47.00 else:2.00~3.50 Ni:rest | 170~210HB | Austenite | ☆☆☆☆ | Deposited metal is Fe-Ni alloy with Mn,for the welding between cast irons or cast iron-steel . TA:welding and repairing of cast iron,welding between flange steel and cast iron pipe |
ST-WELD631-O | ———— | C:2.00~3.50 Si:2.50~4.50 Mn:0.10~0.50 else:7.00~8.50 | 180~220HB | ductile cast iron | ☆☆☆☆ | Deposited metal is ductile cast iron,,for the hot welding of many kind of cast irons. Preheating temperature and interlayer temperature must be higher than 450℃. |