HSS18X18X5/16 Dimensions & Weight
HSS18X18X5/16 is a square hollow structural section, 18 x 18 in nominal outside with a 5/16 in nominal wall (0.291 in design wall per AISC), at 74.38 lb per foot — commonly specified for heavier columns and brace members.
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HSS18X18X5/16 Dimensions
| Property | Imperial | Metric |
|---|---|---|
| Outside depth (nominal) | 18 in | 457.2 mm |
| Outside width (nominal) | 18 in | 457.2 mm |
| Wall thickness (nominal) | 5/16 in (0.313) | 7.9 mm |
| Design wall thickness0.93 x nominal, per AISC for A500 | 0.29 in | 7.4 mm |
| Cross-section area (A)computed from weight and steel density | 21.86 in² | 141 cm² |
| Weight | 74.38 lb/ft | 110.7 kg/m |
Standard: AISC. Values from the published section tables; dimensions not listed here are not shown rather than estimated.
What does HSS18X18X5/16 weigh and cost?
HSS18X18X5/16 weighs 74.38 lb per foot. At an example material price of $0.92/lb that is about $68.43 per foot. Set your quantity, length, and price to total your own run:
Material only, example pricing. Actual steel pricing varies by region, grade, quantity, and market conditions — use your own supplier numbers for real bids.
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Related sizes
- HSS18X18X1/459.85 lb/ft
- HSS18X18X3/888.73 lb/ft
- HSS18X18X1/2116.91 lb/ft
- HSS18X18X5/8144.39 lb/ft
- HSS18X18X3/4171.16 lb/ft
- HSS18X18X7/8197.24 lb/ft
- HSS18X18X1222.63 lb/ft
- HSS20X16X5/1674.38 lb/ft
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Deeper reading: HSS Sizes: Square & Rectangular Tube Guide · How to calculate steel weight