Icyiciro cya 20G Umuyoboro wa Steel utagira umuyaga urakoreshwa kumiyoboro idafite kashe yo gukora amashyanyarazi afite umuvuduko mwinshi cyangwa muremure kandi utagira kashe ikoreshwa nkumuyoboro.
Umuyoboro wa 20G udafite icyuma nicyuma cyiza cya karubone cyubatswe, ibikoresho byo gutekesha, karubone ya 0.17-0.24%, imbaraga zingana za 410Mpa, umusaruro utanga 230-250Mpa. Ese umusaruro wibanze wibyuma, turashobora gutanga 20G Umuyoboro udafite ubuziranenge hamwe nigiciro cyiza. Hano kugirango nkumenyeshe kuri 20G idafite umuyoboro wibanze wimiti nubukanishi.
UT. Ikizamini Ingaruka Ingaruka, Ikizamini Cyagatatu (nkikizamini cya SGS), Gipfundikirwa cyangwa Kurasa Kurasa no Gushushanya. Imiterere yinyongera GB5310 20GGB5310 20G Umuyoboro wibyuma, umuyoboro wibyuma 20G, umuyoboro wa 20G
Umuyoboro w'ibyuma Gusaba:
GB5310 20G imiyoboro idafite ibyuma ikoreshwa cyane cyane mubikoresho byumuvuduko, imashini, ibikoresho byo mu miyoboro, amavuta n’inganda.
GB 5310- 2008 isanzwe ikoreshwa mubituba bidafite kashe yo gukora amashyanyarazi afite umuvuduko mwinshi cyangwa muremure kandi utagira kashe ikoreshwa nkumuyoboro.
| Ibikoresho bya shimi | Amakuru |
| Carbone | 0.17-0.24 |
| Silicon | 0.17-0.37 |
| Manganese | 0.70-1.00 |
| Fosifore (max) | 0.03 |
| Amazi meza (max) | 0.03 |
| Chromium (max) | 0.25 |
| Molybdenum (max) | 0.15 |
| Igikombe (max) | 0.2 |
| Nickel (max) | 0.25 |
| Vanadium (max) | 0.08 |
| Ibyiza | Amakuru |
| Imbaraga Zitanga (Mpa) | 15415 |
| Imbaraga za Tensile (Mpa) | 240 |
| Kurambura (%) | 22 |
| W.T. (S) | Ubworoherane bwa W.T. | |
| <3.5 | +15% (+ 0.48mm min) | |
| -10% (+ 0.32mm min) | ||
| 3.5-20 | +15%,-10% | |
| > 20 | D <219 | ± 10% |
| D≥219 | +12.5%,-10% | |