News - -196℃ low temperature impact, all position continuous arc welding stainless steel electrode

I. Overview
With the rapid development of international chemical and energy logistics, stainless steel storage tanks and containers are widely used in the transportation and storage of chemical, food and beverage, energy and other materials. Due to its excellent low temperature toughness and good corrosion resistance, austenitic stainless steel is widely used in the construction of cryogenic storage tanks, equipment and large cryogenic structures

Cryogenic storage tank

2.Brief introduction of our -196℃ low temperature impact stainless steel welding consumables

Category	Name	Model	Standard		Remark
			GB/YB	AWS
Electrode	GES-308LT	A002	E308L-16	E308L-16	-196℃≥31J
Flux wire	GFS-308LT	-	TS 308L-F C11	E308LT1-1	-196℃≥34J
Solid wire	GTS-308LT (TIG)	-	H022Cr21Ni10	ER308L	-196℃≥34J
	GMS-308LT (MIG)	-	H022Cr21Ni10	ER308L	-196℃≥34J
SAW	GWS-308/ GXS-300	-	S F308L FB-S308L	ER308L	-196℃≥34J

3.Our electrode GES-308LT (E308L-16)
In order to meet the market demand, our company has developed a variety of ultra-low temperature, high toughness austenitic stainless steel electrodes, the chemical composition of the deposited metal (as shown in Table 1) and stable mechanical properties (as shown in Table 2), and has excellent all-position welding process Performance, and excellent low temperature impact toughness, the impact of its ferrite amount on the impact value (Table 3).

1.Chemical composition of deposited metal

E308L-16	C	Mn	Si	P	S	Ni	Cr	Mo	Cu	N	Fn
NB (%)	0.04	0.5-2.5	1.0	0.030	0.020	9.0-12.0	18.0-21.0	0.75	0.75	-	-
Sample1	0.022	1.57	0.62	0.015	0.006	10.25	19.23	0.020	0.027	0.046	6.5
Sample2	0.037	2.15	0.46	0.018	0.005	10.44	19.19	0.013	0.025	0.45	3.8
Sample3	0.032	1.37	0.49	0.017	0.007	11.79	18.66	0.021	0.027	0.048	0.6

Table 1

2.Mechanical properties of deposited metal

E308L-16	Yield MPa	Tensile MPa	Elongation %	-196℃ imparct J/℃		GB/T4334-2020 E Intergranular corrosion	Radiographic inspection	Remark
E308L-16	Yield MPa	Tensile MPa	Elongation %	Single value	Average value	GB/T4334-2020 E Intergranular corrosion	Radiographic inspection	Remark
NB	-	510	30	-	-	-	I	-
Sample1	451	576	42	32/32/33	32.3	qualified	I	-
Sample2	436	563	44	39/41/39	39.7	qualified	I	-
Sample3	412	529	44.5	52/53/55	53.3	qualified	I	-

Table 2

3.The effect of the amount of deposited metal ferrite on the impact

4.Display of welding process (φ3.2mm)

Upright welding before and after slag removal (DC+)

Pipeline welding before and after slag removal (DC+)

4. Precautions for vertical welding
1. Low current welding should be used;
2. Keep the arc as low as possible;
3. When the arc swings to both sides of the groove, stop for a while, and the swing width is controlled within 3 times the diameter of the electrode.

5.Pipeline picture of welding consumables application

For -196℃ low-temperature impact stainless steel welding consumables, after years of research and development of welding consumables, we already have corresponding supporting welding consumables for welding rods, solid cores, flux cores and submerged arcs, and have developed hand electrode continuous arc welding consumables for all-position welding , and has many engineering application achievements, welcome customers to consult and choose!