CISC HSS Round & Section Properties

Browse CISC Round HSS from Structural Section Tables SST12.1. Compare metric-native dimensions and section properties, open a designation for full details, or load a section into Optimal Beam.

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Showing CISC · HSS Round · Metric

CISC Structural Section Tables SST12.1 · 1,514 sections

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CISC HSS Rnd dimensions and section properties in metric units
Designation Weight (kg/m) Depth, d (mm) Width (mm) Area (mm²) Ix (mm⁴) Sx (mm³)
HA711×13 219 — — 25100 1540000000 4330000
HS711×13 219 — — 27900 1700000000 4780000
HA711×19 325 — — 37400 2250000000 6340000
HS711×19 325 — — 41400 2480000000 6980000
HA711×25 430 — — 49400 2930000000 8240000
HS711×25 430 — — 54700 3220000000 9060000
HA610×9.5 141 — — 16200 732000000 2400000
HS610×9.5 141 — — 18000 809000000 2650000
HA610×13 187 — — 21500 961000000 3150000
HS610×13 187 — — 23800 1060000000 3480000
HA610×19 277 — — 31900 1400000000 4600000
HS610×19 277 — — 35300 1540000000 5060000
HA610×25 366 — — 42100 1820000000 5960000
HS610×25 366 — — 46600 1990000000 6540000
HA508×6.4 78.6 — — 9030 285000000 1120000
HS508×6.4 78.6 — — 10000 315000000 1240000
HA508×9.5 117 — — 13500 420000000 1650000
HS508×9.5 117 — — 14900 464000000 1830000
HA508×13 155 — — 17800 550000000 2160000
HS508×13 155 — — 19800 606000000 2390000
HA508×19 230 — — 26400 797000000 3140000
HS508×19 230 — — 29300 876000000 3450000
HA508×25 302 — — 34800 1030000000 4040000
HS508×25 302 — — 38500 1120000000 4430000
HA457×6.4 70.6 — — 8110 207000000 904000
HS457×6.4 70.6 — — 8990 229000000 1000000
HA457×9.5 105 — — 12100 304000000 1330000
HS457×9.5 105 — — 13400 336000000 1470000
HA457×13 139 — — 16000 398000000 1740000
HS457×13 139 — — 17700 438000000 1920000
HA457×19 206 — — 23700 575000000 2510000
HS457×19 206 — — 26200 630000000 2760000
HA457×25 270 — — 31200 738000000 3230000
HS457×25 270 — — 34500 806000000 3530000
HA406×6.4 62.6 — — 7200 145000000 711000
HS406×6.4 62.6 — — 7980 160000000 786000
HA406×9.5 93.3 — — 10700 212000000 1040000
HS406×9.5 93.3 — — 11900 234000000 1150000
HA406×13 123 — — 14200 277000000 1360000
HS406×13 123 — — 15700 305000000 1500000
HA406×16 153 — — 17600 339000000 1670000
HS406×16 153 — — 19500 372000000 1830000
HA406×19 182 — — 21000 398000000 1960000
HS406×19 182 — — 23200 436000000 2140000
HA406×25 239 — — 27500 508000000 2500000
HS406×25 239 — — 30400 554000000 2730000
HA356×6.4 54.7 — — 6290 96200000 541000
HS356×6.4 54.7 — — 6970 106000000 598000
HA356×9.5 81.3 — — 9350 141000000 792000
HS356×9.5 81.3 — — 10400 155000000 873000
HA356×13 107 — — 12400 183000000 1030000
HS356×13 107 — — 13700 201000000 1130000
HA356×16 133 — — 15300 224000000 1260000
HS356×16 133 — — 16900 245000000 1380000
HA356×19 158 — — 18200 262000000 1470000
HS356×19 158 — — 20100 286000000 1610000
HA324×6.4 49.7 — — 5720 72400000 447000
HS324×6.4 49.7 — — 6330 79900000 493000
HA324×9.5 73.9 — — 8500 106000000 653000
HS324×9.5 73.9 — — 9410 116000000 719000
HA324×13 97.5 — — 11200 137000000 847000
HS324×13 97.5 — — 12400 151000000 930000
HA324×16 121 — — 13900 167000000 1030000
HS324×16 121 — — 15400 183000000 1130000
HA324×19 143 — — 16500 195000000 1200000
HS324×19 143 — — 18200 213000000 1310000
HA273×4.8 31.6 — — 3630 32800000 240000
HS273×4.8 31.6 — — 4030 36300000 266000
HA273×6.4 41.8 — — 4800 43000000 315000
HS273×6.4 41.8 — — 5320 47400000 347000
HA273×7.9 51.9 — — 5970 52900000 387000
HS273×7.9 51.9 — — 6610 58200000 426000
HA273×9.5 61.9 — — 7130 62400000 457000
HS273×9.5 61.9 — — 7890 68600000 502000
HA273×13 81.6 — — 9400 80600000 590000
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Family overview

What are CISC HSS Round?

Browse CISC Round HSS from Structural Section Tables SST12.1. Compare metric-native dimensions and section properties, open a designation for full details, or load a section into Optimal Beam.

Designations

Understanding HSS Round designations

Canadian round HSS designations list outside diameter × nominal wall thickness in millimetres.

Nominal depth series

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Rnd

Properties

HSS Round properties explained

These properties are especially relevant when comparing HSS Round. View the complete property glossary.

Symbol Property Units Why it matters
Weight Weight lb/ft, kg/m Mass per unit length; used for self-weight and economy comparisons
OD Outside diameter in, mm Outside diameter for pipe and round HSS
tw (Nominal) Nominal wall thickness in, mm Published nominal wall thickness from the shape designation
tw (Design) Design wall thickness in, mm Reduced wall thickness used for published design properties
A Cross-sectional area in², mm² Total steel cross-sectional area
Ix Moment of inertia (x) in⁴, mm⁴ Major-axis flexural stiffness
Iy Moment of inertia (y) in⁴, mm⁴ Minor-axis flexural stiffness
Sx Elastic section modulus (x) in³, mm³ Elastic bending property about the x-axis
Sy Elastic section modulus (y) in³, mm³ Elastic bending property about the y-axis
Zx Plastic section modulus (x) in³, mm³ Plastic bending property about the x-axis
Zy Plastic section modulus (y) in³, mm³ Plastic bending property about the y-axis
rx Radius of gyration (x) in, mm Strong-axis radius of gyration
ry Radius of gyration (y) in, mm Weak-axis radius of gyration and lateral stability relevance
J Torsional constant in⁴, mm⁴ Torsional constant

Library summary

Computed HSS Round summary

The current CISC HSS Round library contains 160 sections across 1 nominal-depth series. Published weights range from 2.05 to 289.00 lb/ft , and actual depths range from 1.66 to 28.00 inches .

Lightest section
HA42x3.2
Heaviest section
HA711x25
Ix range
0.17 – 7,736.08 in⁴
Sx range
0.20 – 552.88 in³

Related families

Related CISC families

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Source: CISC Structural Section Tables SST12.1 v12.1 · Verified July 2026 · View methodology