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COATED ELECTRODES
Guide to AWS A5.4-1992
Covered electrode
for manual metalarc welding.
Suffix
Coating type and usability characteristics
–15 –16 –17
For use with DC+ only. Usually basic coating. All positions. For use with DC+ and AC. Rutile coating. All positions. As for –16, but higher silica content in coating gives following: – More of a spray arc and finer rippled bead surface in H-V fillets. – Slower freezing slag permits improved handling with a drag technique.
– Mitre to slight concave H-V fillets. – When making vertical-up fillets the slower freezing slag requires slight weave to produce flat profile. Same coating and types as for –15 but with a mild steel core wire. Flat and horizontal positions only. Same coating and type as for –16 but with a mild steel core wire. Flat and horizontal positions only.
E 312 –17 –25
–26
Indicates compositional type.
AWS
3.01
Chemical composition of undiluted weld metal
classification
C
Cr
Ni
E 209 -xx E 219-xx E 240-xx E 307-xxx E 308-xx E 308 H-xx E 308 L-xx E 308 Mo-xx E 308 MoL-xx E 309-xx E 309 L-xx E 309 Cb-xx E 309 Mo-xx E 309 MoL-xx E 310-xx E 310 H-xx E 310 Cb-xx E 310 Mo-xx E 312-xx E 316-xx E 316 H-xx E 316 L-xx E 317-xx E 317 L-xx E 318-xx E 320-xx E 320 LR-xx E 330-xx E 330 H-xx E 347-xx E 349-xx E 383-xx E 385-xx E 410-xx E 410 NiMo-xx E 430-xx E 502-xx E 505-xx E 630-xx E 16-8-2-xx E 7 Cr-xx E 2209-xx E 2553-xx
0.06 0.06 0.06 0.04–0.14 0.08 0.04–0.08 0.04 0.08 0.04 0.15 0.04 0.12 0.12 0.04 0.08–0.20 0.35–0.45 0.12 0.12 0.15 0.08 0.04–0.08 0.04 0.08 0.04 0.08 0.07 0.03 0.18–0.25 0.35–0.45 0.08 0.13 0.03 0.03 0.12 0.06 0.10 0.10 0.10 0.05 0.10 0.10 0.04 0.06
20.5–24.0 19.0–21.5 17.0–19.0 18.0–21.5 18.0–21.0 18.0–21.0 18.0–21.0 18.0–21.0 18.0–21.0 22.0–25.0 22.0–25.0 22.0–25.0 22.0–25.0 22.0–25.0 25.0–28.0 25.0–28.0 25.0–28.0 25.0–28.0 28.0–32.0 17.0–20.0 17.0–20.0 17.0–20.0 18.0–21.0 18.0–21.0 17.0–20.0 19.0–21.0 19.0–21.0 14.0–17.0 14.0–17.0 18.0–21.0 18.0–21.0 26.5–29.0 19.5–21.5 11.0–13.5 11.0–12.5 15.0–18.0 4.0–6.0 8.0–10.5 16.0–16.75 14.5–16.5 6.0–8.0 21.5–23.5 25.0–27.0
9.5–12.0 5.5–7.0 4.0–6.0 9.0–10.7 9.0–11.0 9.0–11.0 9.0–11.0 9.0–12.0 9.0–12.0 12.0–14.0 12.0–14.0 12.0–14.0 12.0–14.0 12.0–14.0 20.0–22.5 20.0–22.5 20.0–22.0 20.0–22.0 8.0–10.5 11.0–14.0 11.0–14.0 11.0–14.0 12.0–14.0 12.0–14.0 11.0–14.0 32.0–36.0 32.0–36.0 33.0–37.0 33.0–37.0 9.0–11.0 8.0–10.0 30.0–33.0 24.0–26.0 0.7 4.0–5.0 0.6 0.4 0.4 4.5–5.0 7.5–9.5 0.4 8.5–10.5 6.5–8.5
148
Mo
Nb + Ta
Mn
1.5–3.0 – 4.0–7.0 0.75 – 8.0–10.0 0.75 – 10.5–13.5 0.5–1.5 – 3.30–4.75 0.75 – 0.5–2.5 0.75 – 0.5–2.5 0.75 – 0.5–2.5 2.0–3.0 – 0.5–2.5 2.0–3.0 – 0.5–2.5 0.75 – 0.5–2.5 0.75 – 0.5–2.5 0.75 0.70–1.00 0.5–2.5 2.0–3.0 – 0.5–2.5 2.0–3.0 – 0.5–2.5 0.75 – 1.0–2.5 0.75 – 1.0–2.5 0.75 0.70–1.00 1.0–2.5 2.0–3.0 – 1.0–2.5 0.75 – 0.5–2.5 2.0–3.0 – 0.5–2.5 2.0–3.0 – 0.5–2.5 2.0–3.0 – 0.5–2.5 3.0–4.0 – 0.5–2.5 3.0–4.0 – 0.5–2.5 2.0–3.0 ≥6xC≤1.0 0.5–2.5 2.0–3.0 ≥8xC≤1.0
0.5–2.5
2.0–3.0 ≥8xC≤0.40 1.5–2.5 0.75 – 1.0–2.5 0.75 – 1.0–2.5 0.75 ≥8xC≤1.0 0.5–2.5 0.35–0.65 0.75–1.20 0.5–2.5 3.2–4.2 – 0.5–2.5 4.2–5.2 – 1.0–2.5 0.75 – 1.0 0.40–0.70 – 1.0 0.75 – 1.0 0.45–0.65 – 1.0 0.85–1.20 – 1.0 0.75 0.15–0.30 0.25–0.75 1.0–2.0 – 0.5–2.5 0.45–0.65 – 1.0 2.5–3.5 – 0.5–2.0 2.9–3.9 – 0.5–1.5
Si
P
S
0.90 1.0 1.0 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.75 0.75 0.75 0.75 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.60 0.30 0.90 0.90 0.90 0.90 0.90 0.75 0.90 0.90 0.90 0.90 0.90 0.75 0.60 0.90 0.90 1.0
0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.03 0.03 0.03 0.03 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.02 0.04 0.04 0.04 0.04 0.02 0.03 0.04 0.04 0.04 0.04 0.04 0.04 0.03 0.04 0.04 0.04
0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.015 0.03 0.03 0.03 0.03 0.02 0.02 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03
N
Cu
0.10–0.30 0.75 0.10–0.30 0.75 0.10–0.30 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 3.0–4.0 – 3.0–4.0 – 0.75 – 0.75 – 0.75 – 0.75 – 0.6–1.5 – 1.2–2.0 – 0.75 – 0.75 – 0.75 – 0.75 – 0.75 – 3.25–4.00 – 0.75 – 0.75 0.08–0.20 0.75 0.10–0.25 1.5–2.5