Q345B soude tiyo se yon kalite tiyo alyaj ki ba-wo fòs asye, ki lajman ki itilize nan pwojè konstriksyon, pon, machin, bato, veso presyon ak lòt jaden pou fè divès kalite konpozan estrès ak pati estriktirèl.
Q345B Tib chodyè presyon ki wo konpozisyon chimik (%)
| Konpozisyon | C | sizo | Mn | P | S | Kr | Ni | Cu | Mouvman | N | Tibèkil | V | Nòb |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Maks | 0.2 | 0.5 | 1.7 | 0.035 | 0.035 | 0.3 | 0.5 | 0.3 | 0.1 | 0.012 | 0.2 | 0.15 | 0.07 |
Q345B ki ba-kabòn alyaj tiyo asye Pwopriyete mekanik
| Epesè (kalib, longè) t mm |
fòs rupture σb Mpa |
pwen sede σs Mpa |
Elongasyon nan kraze oswa elongasyon δ % |
|---|---|---|---|
| t Mwens pase oswa egal a 16 | 470~630 | Pi gran pase oswa egal a 345 | Pi gran pase oswa egal a 20 |
| 16< t≤ 40 | 470~630 | Pi gran pase oswa egal a 335 | Pi gran pase oswa egal a 20 |
| 40＜t Mwens pase oswa egal a 63 | 470~630 | Pi gran pase oswa egal a 325 | Pi gran pase oswa egal a 19 |
| 63＜t Mwens pase oswa egal a 80 | 470~630 | Pi gran pase oswa egal a 315 | Pi gran pase oswa egal a 19 |
| 80＜t Mwens pase oswa egal a 100 | 470~630 | Pi gran pase oswa egal a 305 | Pi gran pase oswa egal a 19 |
| 100＜t Mwens pase oswa egal a 150 | 450~600 | Pi gran pase oswa egal a 285 | Pi gran pase oswa egal a 18 |
| 150＜t Mwens pase oswa egal a 200 | 450~600 | Pi gran pase oswa egal a 275 | Pi gran pase oswa egal a 17 |
| 200＜t Mwens pase oswa egal a 250 | 450~600 | Pi gran pase oswa egal a 265 | Pi gran pase oswa egal a 17 |
Q345B soude tiyo asye pi gwo dyamèt espiral tiyoestanda ekivalans
| GB | ANNWI | ASTRA | ISO | DIN EN/DIN | NF EN/NF | EN | Nimewo Steel | SS | BS EN/BS |
| Q345B Q345C |
SM490A SS490 |
A572 A678Gr.A SSGrade50 |
E355C Fe510B |
St52-3 | E36-2 | S355JR Fe510B |
1.0045 | 2132-01 | 50B |
Q345B soude tiyo Pou vann
