钢型材
L 20x20x3
以下列出了来源目录中的尺寸和技术特性。
型材名称写法: L 20x20x3 · L20x20x3
- 目录
- L Equal (GOST 8509-93 Annex A)
- 标准
- GOST 8509-93 Annex A (ISO 657-1:1989)
- 来源出版物
- GOST 8509-93 Annex A (ISO 657-1:1989)
尺寸、重量和技术特性
| 特性 | 数值 | 单位 |
|---|---|---|
| g | 0.88 | kg/m |
| A | 112.00 | mm² |
| h = b | 20 | mm |
| t | 3 | mm |
| r | 3.5 | mm |
| C_x = C_y [GOST] | 5.980 | mm |
| C_u [GOST] | 14.10 | mm |
| C_v [GOST] | 8.460 | mm |
| I_x = I_y [GOST] | 0.00392 | 10⁶ mm⁴ |
| r_x = r_y [GOST] | 5.900 | mm |
| Z_x = Z_y [GOST] | 0.279 | 10³ mm³ |
| I_u [GOST] | 0.00618 | 10⁶ mm⁴ |
| r_u [GOST] | 7.420 | mm |
| I_v [GOST] | 0.00165 | 10⁶ mm⁴ |
| r_v [GOST] | 3.830 | mm |
| Z_v [GOST] | 0.195 | 10³ mm³ |
来源说明与更正
Annex A prints Iu=1220 and 1470 cm4 for 250x250x28 and 250x250x35. Original cells retained; effective Iu corrected to 12200 and 14700 cm4 by explicit user instruction, supported by the comparison source in valueCorrections. This is not an official GOST corrigendum.
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