steel profile
W21x12.25x166
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 | 571.0 | mm |
| b | 315.5 | mm |
| t_w | 19.05 | mm |
| t_f | 34.54 | mm |
| r_1 | 13.0 | mm |
| g | 247.0 | kg/m |
| A | 31550.0 | mm² |
| I_x | 1780.00 | 10⁶ mm⁴ |
| I_y | 181.00 | 10⁶ mm⁴ |
| i_x | 238.0 | mm |
| i_y | 75.80 | mm |
| W_el,x | 6230 | 10³ mm³ |
| W_el,y | 1150 | 10³ mm³ |
| W_pl,x | 7080 | 10³ mm³ |
| W_pl,y | 1770 | 10³ mm³ |
| I_t | 9989.5542144 | 10³ mm⁴ |
| h | 22.48 | in |
| b | 12.420 | in |
| t_w | 0.750 | in |
| t_f | 1.360 | in |
| r_1 | 0.512 | in |
| g | 166 | lb/ft |
| A | 48.9 | in² |
| I_x | 4280 | in⁴ |
| I_y | 435 | in⁴ |
| i_x | 9.35 | in |
| i_y | 2.98 | in |
| W_el,x | 380 | in³ |
| W_el,y | 70.1 | in³ |
| W_pl,x | 432 | in³ |
| W_pl,y | 108 | in³ |
| I_t | 24 | in⁴ |
| d | 18.7 mm [PDF] | |
| 4.57 | ||
| 25.0 | ||
| u | 0.891 | |
| H | 48,500 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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