ASTM A299 GR.B Alloy Pressure oko pereti maitai

ASTM A299 Kōeke B kōhua ​​paraharaha maitai ki te kaha tukua iti i runga 325 Mpa, me te kaha tensile i roto i 550-690 Mpa. Whakataurite ki te pēhanga oko maitai paraharaha A299 Kōeke A, tukua te kaha i runga ake 290 Mpa me te kaha tensile i roto i 515-655 Mpa, oko pehanga pereti maitai SA299 Koeke B he uara teitei ake. Ko nga whakaritenga hangarau taapiri mo nga pereti rino kopara SA299 Koeke B penei i te whakamaarama wera i muri i te wea, te whakamaarama iti o te pāmahana, te whakamatautau whakaheke taumaha me te whakamatautau taumaha teitei. Ko te whakamatautau Ultrasonice me mahi SA299 Koeke B paraharaha paraharaha maitai i te wa e huri ana i roto i to maatau mira maitai.

A299 Kōeke B Tito Matū
Kōeke	Te Huānga Mōrahi (%)
	C	Si	Mn	P	S	Mo
A299 GR.B	0.28-0.30	0.13-0.45	0.84 -1.62	0.035	0.035	-

Kōeke	A299 Kōeke B Tauhanga Hangarau
	Te matotoru	Tukunga	Tirohanga	Te whakaroa
A299 GR.B	mm	Min Mpa	Mpa	Min  %
	t≦50	310-325	550-690	19
	50	310-325	550-690	19

Nga Whakaritenga Hangarau me etahi atu Ratonga:
♦  Whakamātautau mānukanuka teitei
♦  Whakamātautau pawera iti
♦  Whakatikahia mo nga pereti matotoru neke atu i te 40mm
♦  He maimoatanga wera i muri i te paiherea (PWHT)
♦  Ka huri i raro i te paerewa NACE MR-0175 (HIC+SSCC)
♦  I tukuna he Tiwhikete whakamatautau Oginal Mill i raro i te EN 10204 FORMAT 3.1/3.2
♦  Te pupuhi pupuhi me te peita, te tapahi me te whakapiri i runga i nga hiahia a te kaiwhakamahi mutunga