6 X 9 Classification		Extra Improved Plow Steel		6 X 37 Classification
Breaking strength in tons	Weight per foot in pounds	Diameter in inches	Breaking strength in tons	Weight per foot in pounds	Breaking strength in pounds
13.3	0.46	1/2"	13.3	0.46	26,600
16.8	0.59	9/16"	16.8	0.59	33,600
20.6	0.72	5/8"	20.6	0.72	41,200
29.4	1.04	3/4"	29.4	1.04	58,800
39.8	1.42	7/8"	39.8	1.42	79,600
51.7	1.85	1"	51.7	1.85	103,400
65	2.34	1 & 1/8	65	2.34	130,000
79.9	2.89	1 & 1/4	79.9	2.89	159,800
96	3.5	1 & 3/8	96	3.5	192,000
114	4.16	1 & 1/2	114	4.16	228,000
132	4.88	1 & 5/8	132	4.88	264,000
153	5.67	1 & 3/4	153	5.67	306,000
174	6.5	1 & 7/8	174	6.5	348,000
198	7.39	2	198	7.39	396,000
221	8.35	2 & 1/8	221	8.35	442,000
247	9.36	2 & 1/4	247	9.36	494,000
274	10.4	2 & 3/8	.274.0	10.4	548,000
302	11.6	2 & 1/2	302	11.6	604,000
331	12.8	2 & 5/8	331	12.8	662,000
361	14	2 & 3/4	361	14	722,000
N/A	N/A	2 & 7/8	392	15.3	784,000
N/A	N/A	3	425	16.6	850,000
N/A	N/A	3 & 1/8	458	18	916,000
N/A	N/A	3 & 1/4	492	19.5	984,000
N/A	N/A	3 & 3/8	529	21	1,058,000
N/A	N/A	3 & 1/2	564	22.7	1,128,000
N/A	N/A	3 & 5/8	602	24.3	1,204,000
N/A	N/A	3 & 3/4	641	26	1,282,000
N/A	N/A	3 & 7/8	680	27.7	1,360,000
N/A	N/A	4	720	29.6	1,440,000