SUPRANOX RS 312 is a rutile coated MMA electrode for joining difficult-to-weld steels, dissimilar steels and for wear-resistant surfacing and buffer layers, the deposit hardness is ~220 HB. Applications include repair and maintenance welding on machines, power transmission equipment and tools. The microstructure of the higher strength weld metal consists of ferritic-austenitic Cr-Ni steel, with ~50% delta-ferrite, and is highly crack resistant, rust-proof and non-scaling <1100 °C. Very good weldability, weld metal transfer is in fine droplets with easy slag removal, producing a good weld bead shape.

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Спецификация

Classification
EN 1600:	~E 29 9 R 12
AWS A5.4:	~E 312-16

Chemical analysis (Typical values in %)

C	Mn	Si	Cr	Ni	Ferrite
0.8.	1	1.2	28	12	25-50

All-weld metal Mechanical Properties

Heat Treatment	Yield Strength N/mm2	Tensile strength N/mm2	Elongation A5 (%)	Impact Energy ISO - V (J)		Hardness
As Welded	> 450	>650	> 20	> 30 (+20 °C)		220 HB

Materials

Welding of steels which are difficult to weld: alloy steels, armor-plating steels. This electrode can also be used to weld dissimilar materials: non-alloyed steels or low alloy steels with stainless steel. Electrode particularly suitable for use in repair work.

Storage and redrying

Keep dry and avoid condensation.
Re-drying not generally required.
If necessary: 300-350 °C for 2 hours, 5 times max.

Current condition

AC; DC+

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