The typical basic chemical composition for this grade is 18 % Cr, 8 % Ni, 6 % Mn. After welding, high resistance is achieved to both hydrogen cracks and hot cracks in the joint. The structure of the weld metal will contain austenite, which contributes to a high toughness of the weld metal.
The yield strength (Rp0.2) of this type of consumables is around 450–550 MPa. The resistance to hydrogen cracks are very high for these types of consumables. It means that it is no need to state a max hydrogen content for stainless consumables.
This type of consumable is suitable as the buffer layer in hard facing. An alternative to the welding consumable AWS 307 is an austenitic stainless steel consumable according to AWS 309. However, the risk of hot cracking is somewhat higher for type AWS 309 compared to AWS 307. Consumables according to AWS 307 are listed in the table below.
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