STAINLESS STEEL (Austenitic Manganese Steel)
NEXA 307-16
Stainless Steel Electrode with Magnese
AWS A/SFA 5.4 E307-16
Applications
- Welding of 14% Mn steel, steel armour, hardenable steel
- Welding of difficult to weld steel
- Joining of wear plates to each other and to their supports
- Joining of stainless steels to carbon steels
- Extensively used in steelmaking public works, mining carrying and dredging.
- Building up of rails and buttering layers before hardfacing on 14%Mn steel or on steels of unknown composition or on carbon steels
Characteristics
- 307 is a lime-titania stainless steel electrode
- Deposited metal of 19%- 9%Ni-4%Mn stainless steel with the perfect structure of austenite
- The deposited metal has excellent crack resistibility
- Easy work hardening characteristic
- Often used as a buffer layer in hardfacing applications
- Excellent slag detachability
- Easy arc striking-Restriking during welding
Chemical Composition
| C | Mn | Si | Cr | Ni |
|---|---|---|---|---|
| 0.04-0.14 | 3.3-4.75 | <1 | 18-21.5 | 9-10.7 |
Mechanical Properties
| UTS (MPa) | El% | Initial Hardness (BHN) | Work Hardens (BHN) |
|---|---|---|---|
| >590 | >30% | 200-250 | 500-550 |
Welding Currents (AC (70 OCV) /DCEP)
| 2.5 x 350 mm | 3.15 x 350 mm | 4.0 x 350 mm | 5.0 x 450 mm |
|---|---|---|---|
| 60-80 | 80-120 | 110-160 | 150-200 |
Product Specifications
Current Type
AC (70 OCV) /DCEP
Welding Positions
Packaging
- Standard carton packing of 10 kg box containing 5 vacuum packed cartons of 2 kg each.
Conditions (Pre-Drying)
- 250-300°C for min. 1hr