CSA G40.20-04
Standard | Tolerances | Packing | Marking | Inspection and Testing | Available size range | Section properties
HOLLOW STRUCTURAL SECTION CSA G40.20-04
CSA G40.20-04 "Genenral requirements for rolled or weld structural quality steel/structural quality steel”
Mechanical properties and chemical composition
Tolerances
The tolerances on dimensions are established in accordance with CSA G40.20-04.
| Characteristics | Tolerances | |||
|---|---|---|---|---|
| Outside dimensions of side | (H 2.5in.) |
 0.02in. |
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| H : Longest side | (2.5in. H3.5in.) |
0.03in. |
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| B : Shortest side | (3.5in.H5.5in.) |
0.04in. |
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| (5.5in.H) |
1% |
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| Wall thickness(T) | -5%, +10% | |||
| Squareness of sides | 90 1.0 |
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| External corner radius | (perimeter24in.) |
(24in.<perimeter) | ||
| (T0.109in.) |
0.218in. | - | ||
| (0.109in.T0.134in.) |
0.268in. | - | ||
| (0.134in.T0.156in.) |
0.312in. | - | ||
| (0.156in.T0.188in.) |
0.470in. | - | ||
| (0.188in.T0.250in.) |
0.625in. | 0.750in. | ||
| (0.250in.T0.313in.) |
0.785in. | 0.940in. | ||
| (0.313in.T0.375in.) |
0.938in. | 1.125in. | ||
| (0.375in.T0.500in.) |
1.250in. | 1.500in. | ||
| (0.500in.T) |
- | 3 x T | ||
| Straightness | 1/8in. / 1feet length (10.4mm/1m length) | |||
| Twist | (H1.5in.) |
0.050in. | ||
| (1.5in.H2.5in.) |
0.062in. | |||
| (2.5in.H4in.) |
0.075in. | |||
| (4in.H6in.) |
0.087in. | |||
| (6in.H8in.) |
0.100in. | |||
| (8in.H) |
0.112in. | |||
| Weight | -3.5%, +10% | |||
| Length(L) | (L24in.) |
-0.25in. and +0.5in. | ||
| (24in.L) |
-0.25in. and +0.75in. | |||
| NOTE 1) Outside dimensions are measured across the flats at positions at least 50mm from the end of the HSS. |
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Packing
In bare bundle with steel band,or in bulk. Standard lengths are 24, 40 and 48 feet.
Marking
Each of the square and rectangular hollow sections shall be marked with the following information.
a)manufacturer's name b) specification designation c) grade letter d) dimension e) heat number
Inspection and Testing
CSA is subject to tensile testing and impact test in accordance with CSA G40.20-04.
| Size (in.) | Wall thickness (in.) | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| BWG#7 | 3/16 | 4/16 | 5/16 | 6/16 | 8/16 | 10/16 | 12/16 | 14/16 | |||
| 0.180 | 0.188 | 0.250 | 0.313 | 0.375 | 0.500 | 0.625 | 0.750 | 0.875 | |||
| Square | Rectangular |  |
4.57 | 4.76 | 6.35 | 7.94 | 9.53 | 12.70 | 15.88 | 19.05 | 22.23 |
| 2.0x2.0 | 50.8x50.8 |  |
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| 3.0x2.0 | 76.2x50.8 |  |
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| 3.0x3.0 | 76.2x76.2 | |
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| 4.0x2.0 | 101.6x50.8 | |
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| 3.5x3.5 | 88.9x88.9 | |
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| 4.0x3.0 | 101.6x76.2 | |
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| 5.0x2.0 | 127x50.8 | |
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| 4.0x4.0 | 101.6x101.6 | |
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| 5.0x3.0 | 127x76.2 | |
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| 6.0x2.0 | 152.4x50.8 | |
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| 4.5x4.5 | 114.3x114.3 | |
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| 6.0x3.0 | 152.4x76.2 | |
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| 5.0x5.0 | 127x127 | |
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| 6.0x4.0 | 152.4x101.6 | |
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| 6.0x6.0 | 152.4x152.4 | |
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| 7.0x5.0 | 177.8x127 | |
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| 8.0x4.0 | 203.2x101.6 | |
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| 7.0x7.0 | 177.8x177.8 | |
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| 8.0x6.0 | 203.2x152.4 | |
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| 10x4.0 | 254x101.6 | |
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| 8.0x8.0 | 203.2x203.2 | |
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| 10x6.0 | 254x152.4 | |
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| 12x4.0 | 304.8x101.6 | |
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| 10x8.0 | 254x203.2 | |
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| 12x6.0 | 304.8x152.4 | |
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| 10x10 | 254x254 | |
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| 12x8.0 | 304.8x203.2 | |
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| 14x6.0 | 355.6x152.4 | |
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| 12x12 | 304.8x304.8 | |
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| 14x10 | 355.6x254 | |
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| 16x8.0 | 406.4x203.2 | |
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| 14x14 | 355.6x355.6 | |
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| 16x16 | 406.4x406.4 | |
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| 20x12 | 508x304.8 | |
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| 18x18 | 457.2x457.2 | |
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| 24x12 | 609.6x304.8 | |
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| 20x20 | 508x508 | |
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| 22x22 | 558.8x558.8 | |
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350W available Section properties