Sanweld™ AXT is a filler metal of AWS ER 307 type with increased manganese content, reducing the risk for fissuring/hot cracking that otherwise can be a problem in fully austenitic weld metals. It is suitable for joining work-hardenable steels, armor plates, austenitic stainless manganese steels and free-machining steels (such as ASTM 303) and stainless Cr steels with max. 18% Cr.
- ISO 14343: 18 8 Mn
- AWS A5.9/ASME SFA-5.9: ER(307) modified
Chemical composition (nominal) %
Typical applications for Sandweld™ AXT are welding of work-hardenable steels, armor plate and austenitic stainless manganese steels. It can also be used for welding stainless chromium steels with max. 18% Cr as well as for overlay welding of carbon and low-alloy steels.
Forms of supply
Sanweld™ AXT is supplied as wire and straight rods.
Weld metal characteristics
Sanweld™ AXT gives a fully austenitic microstructure.
|Temperature||°C (°F)||20 (68)||-196 (-321)|
|Yield strength, Rp0.2||MPa (ksi)||460 (67)||-|
|Tensile strength, Rm||MPa (ksi)||650 (94)||-|
|Impact strength, Charpy V||J (ft/lbf)||140 (103)||27 (20)|
Sanweld™ AXT has corrosion resistance similar to that of the of the corresponding parent metal. For joints between non-alloyed or low-alloy steels and stainless steels, resistance to corrosion is of secondary importance.
Recommended welding data
Electrode positive is used to give good penetration in all types of welded joint. The following table shows common conditions for MIG welding.
|Wire diameter, mm (in.)||Wire feed, m/min (in.min)||Wire feed, in./min||Current, A||Voltage, V||Gas, l/min||Gas, CFH|
|0.9 (0.035)||4-8 (157-315)||150-300||40-120||14-18||12||25|
|1.0 (0.039)||4-8 (157-315)||150-300||60-140||15-21||12||25|
|1.0 (0.039)||6-12 (236-472)||225-450||140-220||23-28||18||35|
|1.2 (0.045)||5-9 (197-354)||200-350||180-260||24-29||18||35|
|1.6 (0.063)||3-10 (118-394)||115-400||230-350||24-29||18||35|
|1.2 (0.045)||3-10 (118-394)||115-400||150-250||23-31||18||35|
- Peak current: 300-400 A
- Background current: 50-150 A
- Frequency: 80-120 Hz
Recommended shielding gases; Ar+(1-3)% O2, Ar+(1-3)%CO2, Ar+He+(1-3)%O2, Ar+He+(1-3)%CO2
Short-arc welding is used with light gauge material of less than about 3 mm, in depositing root runs, and in welding out-of-flat positions. The higher the inductance in short-arc welding, the higher the fluidity of the molten pool.
Spray-arc welding is normally used for heavier gauge material.
The parameters for TIG welding depend largely upon the base metal thickness and the welding application. Electrode negative and a shielding of argon or helium should be used to prevent oxidation of the weld metal. Contact us for more information.
Electrode positive is suggested for joint welding to give good penetration.
|Wire diameter, mm (in.)||Current, A||Voltage, V|
Recommended welding fluxes are Sandvik 15W, Sandvik 34WF or Sandvik 35WF.