steel profile
W21x8.25x73
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 | 539.5 | mm |
| b | 210.7 | mm |
| t_w | 11.56 | mm |
| t_f | 18.80 | mm |
| r_1 | 13.0 | mm |
| g | 108.6 | kg/m |
| A | 13870.0 | mm² |
| I_x | 668.00 | 10⁶ mm⁴ |
| I_y | 29.40 | 10⁶ mm⁴ |
| i_x | 219.0 | mm |
| i_y | 46.00 | mm |
| W_el,x | 2480 | 10³ mm³ |
| W_el,y | 279 | 10³ mm³ |
| W_pl,x | 2830 | 10³ mm³ |
| W_pl,y | 435 | 10³ mm³ |
| I_t | 1248.6942768 | 10³ mm⁴ |
| h | 21.24 | in |
| b | 8.295 | in |
| t_w | 0.455 | in |
| t_f | 0.740 | in |
| r_1 | 0.512 | in |
| g | 73 | lb/ft |
| A | 21.5 | in² |
| I_x | 1600 | in⁴ |
| I_y | 70.6 | in⁴ |
| i_x | 8.64 | in |
| i_y | 1.81 | in |
| W_el,x | 151 | in³ |
| W_el,y | 17.0 | in³ |
| W_pl,x | 172 | in³ |
| W_pl,y | 26.6 | in³ |
| I_t | 3 | in⁴ |
| d | 18.7 mm [PDF] | |
| 5.60 | ||
| 41.2 | ||
| u | 0.875 | |
| H | 7,410 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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