Mild steel - 125 A - air cut chart

125 A air shielded cutting settings for mild steel.

Gas flow rate - slpm / scfh

227 / 480	Hot (cutflow)
304 / 645	Cold (postflow)

Metric

Material thickness	Cut height	Initial pierce height		Pierce delay	Best quality		Highest production		Kerf width
					Cut speed	Arc voltage	Cut speed	Arc voltage
mm	mm	mm	%	seconds	mm/min	volts	mm/min	volts	mm
6	4.6	9	200	0.2	4980	160	5960	160	1.0
8	4.6	9	200	0.3	3800	161	4570	161	1.1
10	4.6	9	200	0.4	2750	162	3330	161	1.1
12	4.6	9	200	0.5	2050	164	2510	163	1.3
16	4.6	10	225	0.8	1260	166	1660	165	1.9
20	4.6	10	225	1.3	980	170	1140	168	2.3
25	4.6	10	225	2.4	610	175	780	173	2.6
30	4.6	Edge Start			580	179	510	177	2.8
32	4.6	Edge Start			400	181	500	178	2.9
35	4.6	Edge Start			340	184	430	181	3.0
40	4.6	Edge Start			240	189	310	186	3.2

English

Material thickness	Cut height	Initial pierce height		Pierce delay	Best quality		Highest production		Kerf width
					Cut speed	Arc voltage	Cut speed	Arc voltage
inches	inches	inches	%	seconds	in/min	volts	in/min	volts	inches
1/4	0.18	0.36	200	0.2	188	160	225	160	0.040
3/8	0.18	0.36	200	0.4	114	162	138	161	0.042
1/2	0.18	0.36	200	0.5	75	164	93	163	0.051
5/8	0.18	0.40	225	0.8	50	166	66	164	0.075
3/4	0.18	0.40	225	1.0	42	169	48	168	0.090
7/8	0.18	0.40	225	2.0	31	171	37	170	0.095
1	0.18	0.40	225	2.5	23	176	30	173	0.105
1-1/4	0.18	Edge Start			16	181	20	178	0.114
1-1/2	0.18	Edge Start			11	187	14	184	0.122