The following table provides structural properties for various sawn lumber section sizes in metric units. All values correspond to the section properties used in structural calculations.

30 rows

Structural properties of sawn lumber sections. Dimensions are nominal sizes in millimeters. Subscripts 'xx' and 'yy' denote axes relative to the section orientation (typically x for strong axis, y for weak axis).
Size (Depth x Width)(mm x mm)	Area (A)(10² mm²)	Section Modulus (Sxx)(10³ mm³)	Section Modulus (Syy)(10³ mm³)	Area Moment of Inertia (Ixx)(10⁶ mm⁴)	Area Moment of Inertia (Iyy)(10⁶ mm⁴)	Radius of Gyration (rxx)(mm)	Radius of Gyration (ryy)(mm)
100 x 38	38	63.3	24.1	3.17	0.46	28.9	11.0
100 x 50	50	83.3	41.7	4.17	1.04	28.9	14.4
100 x 63	63	105	66.2	5.25	2.08	28.9	18.2
100 x 75	75	125	93.8	6.25	3.52	28.9	21.7
100 x 100	100	167	167	8.33	8.33	28.9	28.9
150 x 38	57	143	36.1	10.7	0.69	43.3	11.0
150 x 50	75	188	62.5	14.1	1.56	43.3	14.4
150 x 63	94	236	99.2	17.7	3.13	43.3	18.2
150 x 75	112	281	141	21.1	5.27	43.3	21.7
150 x 100	150	375	250	28.1	12.5	43.3	28.9
150 x 150	225	563	563	42.2	42.2	43.3	43.3
175 x 38	66	194	42.1	17.0	0.80	50.5	11.0
175 x 50	87	255	72.9	22.3	1.82	50.5	14.4
175 x 63	110	322	116	28.1	3.65	50.5	18.2
175 x 75	131	383	164	33.5	6.15	50.5	21.7
200 x 38	76	253	48.1	25.3	0.91	57.7	11.0
200 x 50	100	333	83.3	33.3	2.08	57.7	14.4
200 x 63	126	420	132	42.0	4.17	57.7	18.2
200 x 75	150	500	188	50.0	7.03	57.7	21.7
200 x 100	200	667	333	66.7	16.7	57.7	28.9
200 x 150	300	1000	750	100	56.3	57.7	43.3
200 x 200	400	1333	1333	133	133	57.7	57.7
225 x 38	85	321	54.2	36.1	1.03	65.0	11.0
225 x 50	112	422	93.8	47.5	2.34	65.0	14.4
225 x 63	141	532	149	59.8	4.69	65.0	18.2
225 x 75	168	633	211	71.2	7.91	65.0	21.7
250 x 50	125	521	104	65.1	2.60	72.2	14.4
250 x 75	187	781	234	97.7	8.79	72.2	21.7
250 x 100	250	1042	417	130	20.8	72.2	28.9
250 x 250	625	2604	2604	326	326	72.2	72.2

Source: engineeringtoolbox.com

Interactive Charts

timber lumber metric sizes

References

Original Source

Source: engineeringtoolbox.com