ASTM A709 maitai

He pereti maitai teitei-kaha, iti-konumohe i whakamahia i roto i te hanga piriti. Nga rakau maitai Gnee A709 Grade 36, A709 Grade 50 me A709 Grade 50W. Ko enei tohu ka tohua me nga whakamatautau Charpy e tohu ana i te rohe motuhake, te iti rawa ranei o te pāmahana ratonga e tumanakohia ana. Ko nga whakamatautau a Charpy e tohuhia ana hei whakamatautau kore-whawhati, he whakamatautau mo ia-wera (auau "H"), he whawhati arohaehae ranei, he whakamatautau mo ia pereti (Frequency "P").

Nga whakaritenga:
Matotoru: 3mm--150mm
Whānui: 30mm--4000mm
Te roa: 1000mm--12000mm
Paerewa: ASTM EN10025 JIS GB

ASTM A709 (Kōeke 36, 50 me 50W) Te Hanga Matū

A709 Tito maitai
	Kōeke 36	Kōeke 50	Kōeke 50W
waro	0.26%	0.23%	0.2% mōrahi
konupora	…	1.35%	0.75-1.35%
Phosphorus	0.04%	0.03% mōrahi	0.03% mōrahi
whanariki	0.05%	0.03% mōrahi	0.03% mōrahi
Silicon	0.4% mōrahi	0.15-0.4%	0.15-0.5%
Nickel	…	…	0.5% mōrahi
Chromium	…	…	0.4-0.7%
Te parahi	0.2%	…	0.2-0.4%
Vanadium	…	…	0.01-0.1%

Āhuatanga Hangarau 709 Gr 36:

Maama: 58 ki te 80 ksi
Hua:36 ksi min
Whakaroa:18% min i roto i te 8" 21% min i roto i te 2"

Āhuatanga Hangarau 709 Gr 50:

Maama: 65 min ksi
Hua: 50 ksi min
Whakaroa: 16% min i roto i te 8" 19% min i roto i te 2"

Āhuatanga Hangarau 709 Gr 50W:

Maama: 65 min ksi
Hua:50 ksi min
Whakaroa:16% min i roto i te 8" 19% min i roto i te 2"