steel profile
W21x6.5x57
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 | 534.9 | mm |
| b | 166.5 | mm |
| t_w | 10.29 | mm |
| t_f | 16.51 | mm |
| r_1 | 13.0 | mm |
| g | 84.83 | kg/m |
| A | 10770.0 | mm² |
| I_x | 487.00 | 10⁶ mm⁴ |
| I_y | 12.80 | 10⁶ mm⁴ |
| i_x | 213.0 | mm |
| i_y | 34.40 | mm |
| W_el,x | 1820 | 10³ mm³ |
| W_el,y | 153 | 10³ mm³ |
| W_pl,x | 2110 | 10³ mm³ |
| W_pl,y | 243 | 10³ mm³ |
| I_t | 832.4628512 | 10³ mm⁴ |
| h | 21.06 | in |
| b | 6.555 | in |
| t_w | 0.405 | in |
| t_f | 0.650 | in |
| r_1 | 0.512 | in |
| g | 57 | lb/ft |
| A | 16.7 | in² |
| I_x | 1170 | in⁴ |
| I_y | 30.6 | in⁴ |
| i_x | 8.37 | in |
| i_y | 1.35 | in |
| W_el,x | 111 | in³ |
| W_el,y | 9.35 | in³ |
| W_pl,x | 129 | in³ |
| W_pl,y | 14.8 | in³ |
| I_t | 2 | in⁴ |
| d | 18.7 mm [PDF] | |
| 5.04 | ||
| 46.3 | ||
| u | 0.862 | |
| H | 3,190 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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