Conforming to：GB/T17854 SF308AAS-S308 SF308LAAS-S308L
Description: H107 is defined as fused type fluxes without manganese, with medium silicate, and medium fluorine elements, color in blue-grey to deep grey, with pumiceous granules, 10-60 meshes in size. Fluxes are suitable for use with D.C. power source. Filler-wire or weld strip connected to electrode positive (EP), having following features: good welding technological behavior, slag to remove easily, less carbon increment and less burning loss of chromium content when welding to austenitic stainless steel.
Field of Application: Fluxes match austenitic stainless steel filler-wire or weld-strip, i.e. HOCr21Ni10, HOCr20Ni10Ti, HOOCr24Ni12Nb, HOOCr21Ni10Nb, HOOCr26Ni10Nb, RnIHOOCr21Ni10 etc being used for cladding weld with pole or not of which is applicable to anticorrosion layer of nuclear pressure vessels and petrochemical equipment’s. They can also match filler-wire, i.e. HOCr16Mn being used for repairing weld of high ‘Mn’ content steel. In order to solve slag removal difficulty of stainless steel with Nb element, at post-welding condition, flux H107Nb shall be chosen too.
Typical compositions of fluxes in: (%)
|
SiO2+Al2O3 |
CaF2 |
MgO+CaO |
S |
P |
|
42-54 |
<26 |
13-26 |
≤0.035 |
≤0.04 |
Typical test results of deposited metal of a flux-wire combination
Remarks:
|
Flux&Wire Combination |
Chemical composition of deposited metal (%) |
Mechanical properties | |||||||
|
C |
Mn |
S |
P |
Si |
Cr |
Ni |
ó b Mpa |
δ5 % | |
|
S308+HJ107 |
0.05 |
1.6 |
0.01 |
0.030 |
0.68 |
19.02 |
9.15 |
580 |
49.0 |
Remarks:
1.Before welding, fluxes need to be baked for two(2) hours at around 300℃.
2.Removal of rust, oil, dirt, water, impurities etc in welding-areas.