Hobart Welding Products OM-240 438B manual Electrode and Amperage Selection Chart, Striking an Arc

14-2. Electrode and Amperage Selection Chart

						AMPERAGE
ELECTRODE	DIAMETER						RANGE
		50	100	150	200	250		300	350	400	450
	3/32
6010	1/8
&	5/32
	3/16
6011
	7/32
	1/4
	1/16
	5/64
	3/32
6013	1/8
	5/32
	3/16
	7/32
	1/4
	3/32
	1/8
7014	5/32
	3/16
	7/32
	1/4
	3/32
	1/8
7018	5/32
	3/16
	7/32
	1/4
	3/32
	1/8
7024	5/32
	3/16
	7/32
	1/4
	3/32
Ni-Cl	1/8
	5/32
	3/16
	3/32
308L	1/8
	5/32

ELECTRODE	DC*	AC	POSITION	PENETRATION	USAGE
6010	EP		ALL	DEEP	MIN. PREP, ROUGH
6011	EP		ALL	DEEP	HIGH SPATTER
6013	EP,EN		ALL	LOW	GENERAL
7014	EP,EN		ALL	MED	SMOOTH, EASY,
					FAST
7018	EP		ALL	LOW	LOW HYDROGEN,
					STRONG
7024	EP,EN		FLAT	LOW	SMOOTH, EASY,
			HORIZ
					FASTER
			FILLET
NI-CL	EP		ALL	LOW	CAST IRON
308L	EP		ALL	LOW	STAINLESS

*EP = ELECTRODE POSITIVE (REVERSE POLARITY) EN = ELECTRODE NEGATIVE (STRAIGHT POLARITY)

Ref. S-087 985-A

14-3. Striking an Arc

		1	Electrode
		2	Workpiece
		3	Arc
1		Scratch Technique
		Drag electrode across workpiece
		like striking a match; lift electrode
		slightly after touching work. If arc
		goes out, electrode was lifted too
		high. If electrode sticks to work-
	2	piece, use a quick twist to free it.
		Tapping Technique
		Bring electrode straight down to
3		workpiece; then lift slightly to start
		arc. If arc goes out, electrode was
1		lifted too high. If electrode sticks to
		workpiece, use a quick twist to free
		it.

2

3

S-0049 / S-0050

OM-240 438 Page 58