SMAW Electrode

By Eletrix Date 02-05-2014 14:55

Hey there everybody!

I have to specify an electrode to weld two stainless steel pipes that run into a heat treatment oven on a galvanising line. This pipe is one of the channels where the gas is burned inside to provide heat to the oven interior.

Since my weld knoledgement is kind of low at this point, i'd like to know if you can help me to specify this SMAW electrode.

Both tubes are:

Stainless Steel
C - 0,45 @ 0,55
Cr - 24 @ 28
Ni - 33 @ 37
W - 4 @ 6
Co - 14 @ 16

All in %

Thickness of tube, 7.9mm

Any idea?

By jherrera (*)

Date 02-20-2014 01:24

E310H -
c - .35 / .45
cr - 25 / 28
ni - 20 / 22

Asme II - C definition for E310H:
A7.17 E310H. The composition of this weld metal is
the same as that deposited by E310 electrodes, except that
carbon ranges from 0.35 to 0.45 percent. These electrodes
are used primarily for welding or repairing high-alloy heat
and corrosion-resistant castings of the same general composition
which are designated as Type HK by the Alloy
Castings Institute. The alloy has high strength at temperatures
over 1700°F [930°C]. It is not recommended for
high-sulfur atmospheres or where severe thermal shock is
present. Long time exposure to temperatures in the approximate
range of 1400°F to 1600°F [760°C to 870°C] may
induce formation of sigma and secondary carbides which
may result in reduced corrosion resistance, reduced ductility,
or both. The composition of this electrode should not
be confused with the stainless steel wrought alloy 310H
which has a lower carbon content of 0.04–0.10 percent.