steel profile
18Э
Dimensions and technical properties from the source catalogue are shown below.
- Catalogue
- GOST Э (8240-97)
- Standard
- GOST 8240-97
- Source publication
- GOST 8240-97
Dimensions, weight and technical properties
| Property | Value | Unit |
|---|---|---|
| h | 180 | mm |
| b | 70 | mm |
| t_w | 4.8 | mm |
| t_f | 8.7 | mm |
| r | 11.5 | mm |
| r_2 | 3.5 | mm |
| A | 2040.00 | mm² |
| g | 16.01 | kg/m |
| I_x [GOST] | 10.979 | 10⁶ mm⁴ |
| W_el,x [GOST] | 121.99 | 10³ mm³ |
| i_x [GOST] | 73.40 | mm |
| S_x [GOST] | 70.05 | 10³ mm³ |
| I_y [GOST] | 1.0051 | 10⁶ mm⁴ |
| W_el,y [GOST] | 20.87 | 10³ mm³ |
| i_y [GOST] | 22.190 | mm |
| x_0 [GOST] | 21.80 | mm |
Source notes and corrections
26С: original supplied PDF prints Iy=1115.60 cm⁴. Effective Iy=115.60 cm⁴ follows IUS 12-2004; original cells retained. Wy=171.60 cm³, iy=5.03 cm and x0=3.91 cm remain unverified and inconsistent; profile remains excluded from substitution.
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