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ASTM A572 Grade 42 Wide Flange Beams ,W610 x 174
W-beams, or wide flange beams, are stout, sturdy beams with wide
flanges that are positioned perpendicularly to the web of the
material giving them their characteristic shape and distinguishing
them from I-beams. They’re frequently used as reinforcements in
bridges, commercial buildings, and residential structures and can
be fabricated from wood, aluminum, steel, or composite materials.
Because of the wide flanges on the top and bottom, builders can
more easily distribute heavy weight along the top of the beams
without putting too much stress on the supports directly below.
Along with offering superior weight distribution capabilities, they
also have a better strength-to-weight ratio than square
beams. 
| Metric | Imperial | Depth mm | Width mm | Thickness mm | Web Thickness mm | ||
| W100 x | 19 | W4 x | 13 | 106 | 103 | 8.8 | 7.1 |
| W130 x | 24 | W5 x– | 19 | 127–131 | 127–128 | 9.1–10.9 | 6.1–6.9 |
| W150 x | 13–37 | W6 x– | 8.5–25 | 148–162 | 100–154 | 4.9–11.6 | 4.3–8.1 |
| W200 x | 15–100 | W8 x– | 10–67 | 200–229 | 100–210 | 5.2–23.7 | 4.3–14.5 |
| W250 x | 18–167 | W10 x– | 12–112 | 251–289 | 101–265 | 5.3–31.8 | 4.8–19.2 |
| W310 x | 21–342 | W12 x– | 14–230 | 303–382 | 101–328 | 5.7–52.6 | 5.1–32.6 |
| W360 x | 33–1086 | W14 x– | 22–730 | 349–569 | 127–454 | 8.5–125 | 5.8–78 |
| W410 x | 39–149 | W16 x– | 26–100 | 399–431 | 140–265 | 8.8–25 | 6.4–14.9 |
| W460 x | 52–286 | W18 x– | 35–192 | 450–517 | 152–291 | 10.8–44.4 | 7.6–24.4 |
| W530 x | 66–248 | W21 x– | 44–166 | 525–571 | 165–315 | 11.4–34.5 | 18.9–19 |
| W610 x | 82–262 | W24 x– | 55–176 | 599–641 | 178–327 | 12.8–34 | 10–19 |
| W690 x | 125–289 | W27 x– | 84–194 | 678–714 | 253–356 | 16.3–34 | 11.7–19 |
| W760 x | 134–350 | W30 x– | 90–235 | 750–795 | 264–382 | 15.5–38.1 | 11.9–21.1 |
| W840 x | 176–359 | W33 x– | 118–241 | 835–868 | 292–403 | 18.8–35.6 | 14–21.1 |
| W920 x | 201–446 | W36 x– | 135–302 | 903–933 | 304–423 | 20.1–42.7 | 15.2–24 |
| W1000 x | 222–493 | W40 x– | 149–327 | 970–1036 | 300–308 | 21.1–54.1 | 16–30 |
Chemical Composition of ASTM A572 Steel
| Chemical Alloy | Grade 42 | Grade 50 | Grade 55 | Grade 60 | Grade 65 ≥ ½” thick | Grade 65 over ½” to 1 ¼” thick |
| C | 0.21% | 0.23% | 0.25% | 0.26% | 0.26% | 0.23% |
| Mn | 1.35% | 1.35% | 1.35% | 1.35% | 1.35% | 1.65% |
| P | 0.03% | 0.03% | 0.03% | 0.03% | 0.03% | 0.03% |
| S | 0.03% | 0.03% | 0.03% | 0.03% | 0.03% | 0.03% |
| Si | 0.15-0.40% | 0.15-0.40% | 0.15-0.40% | 0.40% | 0.40% | 0.40% |
