Qaab dhismeedka birta aan kala go 'lahayn Dhuumaha dhoofinta
sharaxaada alaabta
Heerka:GB/T8162-2008
Darajo:20, 45, 20Mn, Q345B, Q345C, Q345D, 45Mn2, 27SiMn
Codbixinta Bixinta:Gariir kulul
Baaxadda Baaxadda:OD 73MM-630MM , Dhumucda 4MM-35MM
Dulqaad:Sida laga soo xigtay GB/T8162-2008
Dhererka:Sida codsi
MTC:GB/T19001-2008
qiyaasta alaabta
Isku-dhafka Kiimikada:
| Darajo | C | Si | Mn | P | S | Nb | V | Ti | Cr | Ni | Cu |
| 20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.030 | / | / | / | ≤0.25 | ≤0.30 | ≤0.25 |
| 45 | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.030 | / | / | / | ≤0.25 | ≤0.30 | ≤0.25 |
| 20Mn | 0.17-0.23 | 0.07-0.37 | 0.70-1.00 | ≤0.035 | ≤0.030 | / | / | / | ≤0.25 | ≤0.30 | ≤0.25 |
| Q345B | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.035 | ≤0.07 | ≤0.15 | ≤0.20 | ≤0.30 | ≤0.50 | ≤0.30 |
| Q345C | ≤0.20 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.030 | ≤0.07 | ≤0.15 | ≤0.20 | ≤0.30 | ≤0.50 | ≤0.30 |
| Q345D | ≤0.18 | ≤0.50 | ≤1.70 | ≤0.035 | ≤0.025 | ≤0.025 | ≤0.15 | ≤0.20 | ≤0.30 | ≤0.50 | ≤0.30 |
| 45Mn2 | 0.42-0.49 | 0.17-0.37 | 1.40-1.80 | ≤0.035 | ≤0.035 | / | / | / | ≤0.25 | / | ≤0.25 |
| 27SiMn | 0.24-0.32 | 1.10-1.40 | 1.10-1.40 | ≤0.035 | ≤0.035 | / | / | / | ≤0.30 | / | ≤0.20 |
Guryaha Makaanikada:
| Darajo | Halabuurka Kiimikada | Xoogga Yeildmin Mpa | Xoogga Jilicsan | Dheeraynta | Tijaabada Saamaynta | ||||||
| T ee mm | Mpa | ||||||||||
| ≤16 | ＞16 ≤30 | ＞30 | ℃ | Saamaynta/J | |||||||
| ≥ | |||||||||||
| 20 | / | / | / | / | 245 | 235 | 225 | ≥410 | ≥20 | - | - |
| 45 | / | / | / | / | 335 | 325 | 315 | ≥590 | ≥14 | - | - |
| 20Mn | / | / | / | / | 275 | 265 | 255 | ≥450 | ≥20 | - | - |
| Q345B | ≤0.012 | ≤0.10 | / | / | 345 | 325 | 295 | 470-630 | ≥20 | 20 | 34 |
| Q345C | ≤0.012 | ≤0.10 | / | ≥0.015 | 345 | 325 | 295 | 470-630 | ≥21 | 0 | 34 |
| Q345D | ≤0.012 | ≤0.10 | / | ≥0.015 | 345 | 325 | 295 | 470-630 | ≥21 | -20 | 34 |
| 45Mn2 | / | ≤0.25 | / | / | 885 | ≥735 | ≥10 | - | - | ||
| 27SiMn | / | ≤0.30 | / | / | 980 | ≥835 | ≥12 | - | - | ||
Bandhiga Wax Soo Saarka:
Faa'iidada:
Maaddada ceeriin waxay ka timid wax soo saarka sare kaas oo ballanqaadaya tayada sare.
Farsamada saxda ah waxay xaqiijinaysaa dulqaadka saxda ah ee cabbirka.
Kooxda iibka ee hufan ayaa ku siinaya soo jeedin sax ah.
Kooxda iibka ka dib waxay soo bandhigaan iyo taageerada dammaanadda alaabta.
Xakamaynta tayada:
Adeegeena:
