Q355c se yon kalite asye. Li se yon alyaj ba-wo fòs estriktirèl asye, lajman ki itilize nan pon, machin, bato, bilding, veso presyon, ekipman espesyal, elatriye, kote "Q" vle di fòs sede, ak 355 vle di ke fòs sede sa a asye. se 355MPa, epi li pral varye ak Kòm epesè nan materyèl la ogmante, valè sede li diminye.
1. konpozisyon chimik
Konpozisyon chimik: C: Mwens pase oswa egal a {{0}}.24, Si: Mwens pase oswa egal a 0.55, Mn: Mwens pase oswa egal a 1.60 , P: Mwens pase oswa egal a {{10}}.035, S: Mwens pase oswa egal a 0.035, Cr: Mwens pase oswa egal a 0.30, Ni: Mwens pase oswa egal a a 0.30, Cu: Mwens pase oswa egal a 0.40.
2.Mechanical pwopriyete
Fòs sede: Mwens pase oswa egal a 16mm: Pi gran pase oswa egal a 355, 16-40: Pi gwo pase oswa egal a 345, 40-63: Pi gwo pase oswa egal a 335, 63-80: Pi gwo pase oswa egal a 315, 100-150: Pi gran pase oswa egal a 295, 150-200: Pi gran pase oswa egal a 285, 200–250: Pi gran pase oswa egal a 275
Fòs rupture: 450-630.
Tès enpak: tanperati: 0 degre: Longitudinal Pi gwo pase oswa egal a 34, transverse Pi gwo pase oswa egal a 27.
Elongasyon: Pi gran pase oswa egal a 21.
