AWS E312-17 is all-position and very similar to 312-16 but the -17 coating contains more silica and less titani-um creating a “Spray-Arc” effect when used on horizontal fillet welds.
Classification:
AWS A5.4 E312-17
ISO 3581-A E 29 9 R 1 2
GENERAL DESCRIPTION
A rutile-basic high CrNi-alloyed all position electrode
Excellent for repair welding
Especially developed for steels difficult to weld, such as armour plates, austenitic Mn-steels and high C-steels
Excellent weldability and self releasing slag
Weldable on AC and DC+ polarity
Current type: DC/AC+
Chemical Composition of Inweld 312-17
|
Fe |
C |
Cr |
Ni |
Mo |
Mn |
Si |
P |
S |
N |
Cu |
|
Balance |
0.15 |
28.0 |
8.0 |
0.75 |
0.5-2.5 |
0.90 |
0.04 |
0.03 |
--- |
0.75 |
|
-32.0 |
-10.5 |
Single values are maximum unless otherwise specified.
Description and Applications
AWS E312-17 is all-position and very similar to 312-16 but the -17 coating contains more silica and less titani- um creating a “Spray-Arc” effect when used on horizontal fillet welds. This also produces a weld deposit with a finer ripple appearance that is more flat to concave. 312-17 has a slower freezing slag giving it better handling characteristics when using a drag technique. Excellent choice on difficult-to-weld steels such as air-hardening steel, medium and high carbon steels. The perfect electrode to use where the base metal is an unknown grade of steel. Suitable for many dissimilar applications involving manganese-hardening steel, armor steel, spring steel, rail steel, nickel clad steel, tool & die steel and aircraft steel. Commonly used as a wear-resistant build-up and “buffer” layer in hard-facing applications. Work hardens up to 200 Brinell. 312-17 has the highest tensile and yield strength of the standard stainless steel coated electrodes (duplex stainless not included).
Recommended Parameters
SMAW (DCEP – Electrode+)
|
Wire Diameter |
Amperage |
|
3/32” |
50-80 |
|
1/8” |
7-110 |
|
5/32” |
100-140 |
