steel profile
W21x8.25x68
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 | 536.7 | mm |
| b | 210.1 | mm |
| t_w | 10.92 | mm |
| t_f | 17.40 | mm |
| r_1 | 13.0 | mm |
| g | 101.2 | kg/m |
| A | 12900.0 | mm² |
| I_x | 617.00 | 10⁶ mm⁴ |
| I_y | 26.90 | 10⁶ mm⁴ |
| i_x | 219.0 | mm |
| i_y | 45.70 | mm |
| W_el,x | 2300 | 10³ mm³ |
| W_el,y | 257 | 10³ mm³ |
| W_pl,x | 2620 | 10³ mm³ |
| W_pl,y | 400 | 10³ mm³ |
| I_t | 832.4628512 | 10³ mm⁴ |
| h | 21.13 | in |
| b | 8.270 | in |
| t_w | 0.430 | in |
| t_f | 0.685 | in |
| r_1 | 0.512 | in |
| g | 68 | lb/ft |
| A | 20.0 | in² |
| I_x | 1480 | in⁴ |
| I_y | 64.7 | in⁴ |
| i_x | 8.61 | in |
| i_y | 1.80 | in |
| W_el,x | 140 | in³ |
| W_el,y | 15.7 | in³ |
| W_pl,x | 160 | in³ |
| W_pl,y | 24.4 | in³ |
| I_t | 2 | in⁴ |
| d | 18.7 mm [PDF] | |
| 6.04 | ||
| 43.6 | ||
| u | 0.874 | |
| H | 6,760 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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