steel profile
W21x12.25x101
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 | 542.5 | mm |
| b | 312.2 | mm |
| t_w | 12.70 | mm |
| t_f | 20.32 | mm |
| r_1 | 13.0 | mm |
| g | 150.3 | kg/m |
| A | 19230.0 | mm² |
| I_x | 1010.00 | 10⁶ mm⁴ |
| I_y | 103.00 | 10⁶ mm⁴ |
| i_x | 229.0 | mm |
| i_y | 73.20 | mm |
| W_el,x | 3720 | 10³ mm³ |
| W_el,y | 661 | 10³ mm³ |
| W_pl,x | 4150 | 10³ mm³ |
| W_pl,y | 1010 | 10³ mm³ |
| I_t | 2081.157128 | 10³ mm⁴ |
| h | 21.36 | in |
| b | 12.290 | in |
| t_w | 0.500 | in |
| t_f | 0.800 | in |
| r_1 | 0.512 | in |
| g | 101 | lb/ft |
| A | 29.8 | in² |
| I_x | 2420 | in⁴ |
| I_y | 248 | in⁴ |
| i_x | 9.02 | in |
| i_y | 2.88 | in |
| W_el,x | 227 | in³ |
| W_el,y | 40.3 | in³ |
| W_pl,x | 253 | in³ |
| W_pl,y | 61.7 | in³ |
| I_t | 5 | in⁴ |
| d | 18.7 mm [PDF] | |
| 7.68 | ||
| 37.5 | ||
| u | 0.885 | |
| H | 26,200 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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