MC Shapes (Miscellaneous Channels): Sizes & Weights

Miscellaneous channels with heavier or wider flanges than the C series — ship channels, stair stringers, and edge members. 40 sizes from the AISC catalog, in lb/ft with kg/m alongside. Deeper reading: AISC Shape Database Guide.

MC3 series

Designation	lb/ft	kg/m	Area (in²)
MC3X7.1	7.1	10.6	2.09

MC4 series

Designation	lb/ft	kg/m	Area (in²)
MC4X13.8	13.8	20.5	4.06

MC6 series

Designation	lb/ft	kg/m	Area (in²)
MC6X6.5	6.5	9.7	1.91
MC6X7	7	10.4	2.06
MC6X12	12	17.9	3.53
MC6X15.1	15.1	22.5	4.44
MC6X15.3	15.3	22.8	4.49
MC6X16.3	16.3	24.3	4.79
MC6X18	18	26.8	5.29

MC7 series

Designation	lb/ft	kg/m	Area (in²)
MC7X19.1	19.1	28.4	5.61
MC7X22.7	22.7	33.8	6.67

MC8 series

Designation	lb/ft	kg/m	Area (in²)
MC8X8.5	8.5	12.6	2.5
MC8X18.7	18.7	27.8	5.5
MC8X20	20	29.8	5.88
MC8X21.4	21.4	31.8	6.28
MC8X22.8	22.8	33.9	6.7

MC9 series

Designation	lb/ft	kg/m	Area (in²)
MC9X23.9	23.9	35.6	7.03
MC9X25.4	25.4	37.8	7.47

MC10 series

Designation	lb/ft	kg/m	Area (in²)
MC10X6.5	6.5	9.7	1.91
MC10X8.4	8.4	12.5	2.47
MC10X22	22	32.7	6.49
MC10X25	25	37.2	7.35
MC10X28.5	28.5	42.4	8.37
MC10X33.6	33.6	50	9.89
MC10X41.1	41.1	61.2	12.1

MC12 series

Designation	lb/ft	kg/m	Area (in²)
MC12X10.6	10.6	15.8	3.12
MC12X14.3	14.3	21.3	4.2
MC12X31	31	46.1	9.11
MC12X35	35	52.1	10.3
MC12X40	40	59.5	11.8
MC12X45	45	67	13.2
MC12X50	50	74.4	14.7

MC13 series

Designation	lb/ft	kg/m	Area (in²)
MC13X31.8	31.8	47.3	9.35
MC13X35	35	52.1	10.3
MC13X40	40	59.5	11.8
MC13X50	50	74.4	14.7

MC18 series

Designation	lb/ft	kg/m	Area (in²)
MC18X42.7	42.7	63.5	12.6
MC18X45.8	45.8	68.2	13.5
MC18X51.9	51.9	77.2	15.3
MC18X58	58	86.3	17.1

Areas marked as computed on the individual size pages are derived from the tabulated weight and steel density rather than read from the section table.

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