Diferans nan Q345A, Q345B, Q345C, Q345D ak Q345E Steel

Q345 se yon kalite materyèl asye. Li se asye alyaj ki ba (C<0.2%), widely used in buildings, bridges, vehicles, ships, pressure vessels, etc. Q represents the yield strength of this material, and the 345 behind it refers to the yield value of this material, which is about 345 MPa. And the yield value will decrease with the increase of the thickness of the material.
Q345 gen bon pwopriyete mekanik konplè, akseptab pèfòmans tanperati ki ba, bon plastisit ak soudabilite. Li se itilize kòm resipyan presyon mwayen ak ba, tank lwil oliv, machin, trepye, machin min, estasyon elektrik, pon ak lòt estrikti ki pote chay dinamik, pati mekanik, estrikti bilding, estrikti metal jeneral, eta woule cho oswa nòmalize. itilize pou divès estrikti nan zòn frèt ki anba a -40 degre.

• Klasifikasyon klas

Q345 ka divize an Q345A, Q345B, Q345C, Q345D, Q345E selon klas la. Ki sa yo reprezante se sitou tanperati enpak la diferan.
Q345A klas pa sibi enpak; Klas Q345B sibi 20 degre enpak tanperati nòmal; Q345C klas sibi enpak 0 degre; Klas Q345D sibi enpak -20 degre; Klas Q345E sibi enpak -40 degre.
Nan diferan tanperati enpak, valè enpak yo diferan tou.

• Konpozisyon chimik

Q345A: C mwens pase oswa egal a 0.20, Mn mwens pase oswa egal a 1.7, Si mwens pase oswa egal a 0.55, P mwens pase oswa egal a { {9}}.045, S Mwens pase oswa egal a 0.045, V 0.02~0.15;

Q345B: C mwens pase oswa egal a 0.20, Mn mwens pase oswa egal a 1.7, Si mwens pase oswa egal a 0.55, P mwens pase oswa egal a { {9}}.040, S mwens pase oswa egal a 0.040, V 0.02 ~ 0.15;

Q345C: C mwens pase oswa egal a 0.20, Mn mwens pase oswa egal a 1.7, Si mwens pase oswa egal a 0.55, P mwens pase oswa egal a { {9}}.035, S mwens pase oswa egal a 0.035, V 0.02~0.15, Al Pi gran pase oswa egal a 0.015;

Q345D: C mwens pase oswa egal a 0.20, Mn mwens pase oswa egal a 1.7, Si mwens pase oswa egal a 0.55, P mwens pase oswa egal a { {9}}.030, S Pi piti oswa egal a 0.030, V 0.02 ~ 0.15, Al Pi gran pase oswa egal a 0.015;

Q345E: C mwens pase oswa egal a 0.20, Mn mwens pase oswa egal a 1.7, Si mwens pase oswa egal a 0.55, P mwens pase oswa egal a { {9}}.025, S Pi piti oswa egal a 0.025, V 0.02~0.15, Al Pi gran pase oswa egal a 0.015;

• Konparezon pèfòmans

Q345D tiyo san pwoblèm pwopriyete mekanik: fòs rupture: 490-675 fòs sede: pi gran pase oswa egal a 345 elongasyon: pi gran pase oswa egal a 22
Q345B tiyo san pwoblèm pwopriyete mekanik: fòs rupture: 490-675 fòs sede: pi gran pase oswa egal a 345 elongasyon: pi gran pase oswa egal a 21
Q345A tiyo san pwoblèm pwopriyete mekanik: fòs rupture: 490-675 fòs sede: pi gran pase oswa egal a 345 elongasyon: pi gran pase oswa egal a 21
Q345C tiyo san pwoblèm pwopriyete mekanik: fòs rupture: 490-675 fòs sede: pi gran pase oswa egal a 345 elongasyon: pi gran pase oswa egal a 22
Q345E tiyo san pwoblèm pwopriyete mekanik: fòs rupture: 490-675 fòs sede: pi gran pase oswa egal a 345 elongasyon: pi gran pase oswa egal a 22

• Seri pwodwi

Q345D asye konpare ak Q345A, B, C asye. Tanperati tès enèji enpak ba-tanperati a ba. Bon pèfòmans. Kantite sibstans danjere P ak S pi ba pase Q345A, B, ak C.
Pri sou mache a pi wo pase Q345A, B, ak C.