CEMP-E
TI 809-26
1 March 2000
Table C-8. AWS A5.20 Carbon Steel Electrodes for FCAW
Table
[to 480 MPa (70 ksi), Multipass Only]
Electrode
Position
Testing Shielding
Current
CVN Toughnessc
Gasd
F, H
CO
27 J @ -18oC
E70T-1M
75-80% Ar - CO2
DCEP
C
E71T-1
F, H, V-up, OH
DCEP
27 J @ -18o
2
F, H, V-up, OH
75-80% Ar - CO
27 J @ -18oC
E70T-4
self
DCEP
E70T-5
F, H
DCEP
27 J @ -29o
2
F, H
75-80% Ar - CO
27 J @ -29oC
E71T-5
CO2
DCEP, DCEN
C
E71T-5M
F, H, V-up, OH
DCEP, DCEN
27 J @ -29o
2
F, H
self
27 J @ -29 C
E70T-7
F, H
DCEN
none specified
F, H, V-up, OH
self
none specified
E70T-8
self
DCEN
C
o
F, H, V-up, OH
self
27 J @ -29 C
E70T-9
F, H
DCEP
27 J @ -29o
2
F, H
75-80% Ar - CO
27 J @ -290C
E71T-9
CO2
DCEP
C
E71T-9M
F, H, V-up, OH
DCEP
27 J @ -29o
2
F, H
self
none specified
b
F, H, V-dn, OH
self
none specified
b
F, H
CO
27 J @ -29oC
E71T-12
CO2
DCEP
C
EXa0T-G
not specified
not specified
EXa
F, H, V-up or V-dn,
not specified
not specified
Note - 27 J @ -18 C = 20 ft-lbf @ 0o
C = 20 ft-lbf @ -20 F
o
- May be either 6 or 7, for 60 ksi or 70 ksi tensile strength.
a
b
- electrodes with "J" at the end of the designator (e.g. E7XT-9J) have minimum CVN
Toughness of 27 J @ -40oC (20 ft-lbf @ -20o
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