Q235A karfe farantin karfe

Tufafin karfe farantin ne yafi amfani wajen kera na daban-daban boilers da kuma muhimmanci na'urorin haɗi. Tun da tukunyar tukunyar tukunyar jirgi yana aiki a matsakaicin zafin jiki (a ƙasa 350 ° C) da matsanancin matsin lamba, ban da babban matsin lamba, yana da tasiri, nauyin gajiya da lalata tururin ruwa. Ana buƙatar tabbatar da wani ƙarfi, kuma yana da kyakkyawan walda da aikin lankwasawa mai sanyi. Maki na gama gari: Q245R, A5155 55, A5156 grade 60, Q235A carbon karfe farantin, A5166 grade 65, A51670 grade.

The elongation na low-alloy high-ƙarfi karfe ne 15% -23%, da kuma tasiri sha makamashi a dakin zafin jiki ne mafi girma fiye da 34J. Q235A carbon karfe farantin, low gami high ƙarfi karfe yana da kyau plasticity da tasiri juriya, wanda zai iya kauce wa gaggautsa karaya a lokacin tasiri da kuma yin sanyi lankwasawa da waldi sauki. Bugu da kari, gaggautsa zafin jiki na low-alloy high-ƙarfi karfe ne low, da sha aiki darajar E-grade karfe a -40 °C ba kasa da 27J. Wannan yana da mahimmanci ga kayan aikin injiniya da hanyoyin sufuri kamar motoci, jiragen ruwa, dandamalin mai na teku, kwantena, gadoji, da sauransu.

Babban abubuwan sinadaran Q235A
C	Si	Mn	P	S
0.22	0.35	1.40	0.045	0.050

Kauri (mm)
Q235A	≤ 16	> 16 ≤ 40	> 40 ≤ 60	> 60 ≤ 100	> 100 ≤ 150	> 150
Ƙarfin Haɓaka (≥Mpa)	235	225	215	215	195	185
Ƙarfin ƙarfi (Mpa)	370-500