Metòd ekspresyon klas: klas asye a konsiste de twa pati: alfabè fonetik Chinwa ki reprezante fòs sede a, valè fòs sede a, ak senbòl klas bon jan kalite a. Pa egzanp: Q345B, kote:
Q-Premye lèt Chinwa Pinyin nan "qu" pou fòs sede asye;
345-Valè fòs sede, inite MPa;
B-Klas Kalite se klas B.
Lè achtè a mande pou plak asye a gen pèfòmans direksyon epesè, senbòl ki reprezante direksyon epesè (direksyon Z) nivo pèfòmans yo ajoute apre klas ki pi wo a -mansyone, pou egzanp: Q345BZ15.
Egzekitif estanda: aplike GB/T1591-2008.
Plak asye Q345B se yon kalite materyèl asye. Li se yon asye ki ba-alyaj (c<0.2%) with good overall performance, good low temperature performance, cold stamping performance, welding performance and machinability. It is widely used in bridges, vehicles, ships, buildings, pressure vessels, etc. q represents the yield of this material, and 345 in the back refers to the yield value of this material, around 345mpa. And as the thickness of the material increases, its yield value decreases.
Kondisyon teknik ak sèvis adisyonèl pou plak asye Q345B:
Tès ki afekte tanperati ki ba
Koupe ak soude selon demann itilizatè fen a
Plis strik sou kèk eleman chimik genyen
Yo te bay sètifika tès orijinal Mill anba EN 10204 FÒMA 3.1/3.2
Tès ultrasons anba GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578
Konpozisyon chimik:
C: mwens pase oswa egal a 0.20%,
Si mwens pase oswa egal a 0.50%,
Mn: Mwens pase oswa egal a 1.70%,
P mwens pase oswa egal a 0.035%,
S: Mwens pase oswa egal a 0.035%,
Nb mwens pase oswa egal a 0.07%,
V: Mwens pase oswa egal a 0.15%,
Ti mwens pase oswa egal a 0.20%,
Cr mwens pase oswa egal a 0.30%,
Ni: mwens pase oswa egal a 0.50%,
Cu: mwens pase oswa egal a 0.30%,
N: Mwens pase oswa egal a 0.012%,
Mo: mwens pase oswa egal a 0.10%
Pwopriyete mekanik
Fòs sede:
Mwens pase oswa egal a 16mm: Pi gran pase oswa egal a 345,
16-40mm: Pi gran pase oswa egal a 335,
40-63mm: Pi gran pase oswa egal a 325,
63-80mm: Pi gran pase oswa egal a 315,
80-100mm: Pi gran pase oswa egal a 305,
100-150mm: Pi gran pase oswa egal a 285,
150-200mm: Pi gran pase oswa egal a 275.
Fòs rupture: 450-630.
Elongasyon: pi gran pase 17.
Tès enpak: Tanperati tès la: 20 degre: pi gran pase 34.
