steel profile
W21x12.25x122
Dimensions and technical properties from the source catalogue are shown below.
- Catalogue
- Nippon W
- Standard
- ASTM A6/A6M
- Source publication
- Nippon Steel Structural Shapes
Dimensions, weight and technical properties
| Property | Value | Unit |
|---|---|---|
| h | 550.7 | mm |
| b | 314.7 | mm |
| t_w | 15.24 | mm |
| t_f | 24.38 | mm |
| r_1 | 13.0 | mm |
| g | 181.6 | kg/m |
| A | 23160.0 | mm² |
| I_x | 1230.00 | 10⁶ mm⁴ |
| I_y | 127.00 | 10⁶ mm⁴ |
| i_x | 231.0 | mm |
| i_y | 74.00 | mm |
| W_el,x | 4480 | 10³ mm³ |
| W_el,y | 806 | 10³ mm³ |
| W_pl,x | 5030 | 10³ mm³ |
| W_pl,y | 1240 | 10³ mm³ |
| I_t | 3746.0828304 | 10³ mm⁴ |
| h | 21.68 | in |
| b | 12.390 | in |
| t_w | 0.600 | in |
| t_f | 0.960 | in |
| r_1 | 0.512 | in |
| g | 122 | lb/ft |
| A | 35.9 | in² |
| I_x | 2960 | in⁴ |
| I_y | 305 | in⁴ |
| i_x | 9.08 | in |
| i_y | 2.91 | in |
| W_el,x | 273 | in³ |
| W_el,y | 49.2 | in³ |
| W_pl,x | 307 | in³ |
| W_pl,y | 75.6 | in³ |
| I_t | 9 | in⁴ |
| d | 18.7 mm [PDF] | |
| 6.45 | ||
| 31.2 | ||
| u | 0.885 | |
| H | 32,700 in⁶ [PDF] | |
| nS | ||
| nS | ||
| C | ||
| C | ||
| c1 | ||
| c1 | ||
| c1 | ||
| c1 |
Source notes and corrections
Source H unit scale is unresolved; not a normalized warping constant.
Source d, ratios, u, x and classifications are retained for reference only, never used for substitution.
Page 32 repeats inconsistent d and slenderness values in 39 rows; no guessed corrections.
Imperial d is labelled mm in the PDF; no inferred unit correction.
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