TABLE I. Type designation and chemical composition of deposited weld metal. 1/
Chemical composition (percent) 2/
MIL-type
Aluminum 3/
Carbon Manganese
Silicon Phosphorus Sulfur
Nickel
Chromium Molybdenum
Vanadium
Copper
MIL-70T-1 4/
MIL-71T-1 4/, 5/
0.12
0.50 to 1.75
0.90
0.030
0.030
0.50
0.20
0.30
0.05
0.20
----
MIL-70T-5 4/
MIL-71T-1A 4/
MIL-70T-6 6/
MIL-70T-8 6/
0.12
0.70 to 1.80
0.40
0.030
0.030
0.30
0.20
0.30
0.05
0.20
1.10
MIL-71T-8 6/
MIL-71T-8A 6/
0.25
0.20 to 1.80
0.60
0.030
0.030
0.30
0.20
0.30
0.05
0.20
1.10
0.40 to
MIL-71T8-K6 6/
0.20
0.30
0.05
0.20
1.10
0.15
0.50 to 1.50
0.40
0.030
0.030
1.10
0.80 to
MIL-71T8-Nil 6/
0.12
0.70 to 1.80
0.40
0.030
0.030
0.20
0.30
0.05
0.20
1.10
1.40
MIL-80T1-Nil 4/
0.80 to
0.15
0.35
0.05
0.20
----
0.12
0.50 to 1.80
0.80
0.030
0.030
1.10
4/
MIL-81T1-Nil
MIL-80T1-Ni2 4/
1.75 to
----
0.30
0.05
0.20
----
0.12
0.50 to 1.80
0.80
0.030
0.030
2.75
4/
MIL-81T1-Ni2
Footnotes:
1/
Sizes 0.035, 0.045, 0.052, 0.0625, 0.068, 0.072, 5/64, 3/32, 7/64, 0.120, 1/8, and 5/32.
2/
Single values are maximum percentages.
3/
For self-shielded electrodes only.
4/
These electrodes shall have "C" or "M" suffix. Electrodes qualification tested and conformance tested using carbon dioxide shielding gas shall have a
"C" suffix, and electrodes tested using 75 percent argon and 25 percent carbon dioxide shielding gas mixture shall have an "M" suffix (for example
MIL-70T-1C or MIL-70T-1M).
5/
MIL-71T-1 electrodes having the suffix "HYD", "HYN" or "HYR" have been specially formulated, require special testing and are intended for use in
welding HSLA-65 steel. Electrodes qualification tested and conformance tested using carbon dioxide shielding gas shall have a "HYD" suffix.
Electrodes qualification tested and conformance tested using 75 percent argon and 25 percent carbon dioxide shielding gas mixture shall have an
"HYN" suffix, and electrodes qualification tested and conformance tested using 95 percent argon and 5 percent carbon dioxide shielding gas mixture
shall have an "HYR" suffix (for example MIL-71T-1-HYR).
6/
These self-shielding electrodes shall have an "S" suffix (for example MIL-71T8-Ni1S).
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