ASTM A709 pā kila

ʻO ASTM A709 / A709M Kūlana Kūlana no ka Carbon a me ka ikaika kiʻekiʻe haʻahaʻa haʻahaʻa haʻahaʻa haʻahaʻa hoʻoheheʻe ʻia, nā pā, a me nā pahu a me nā pā kila kila hoʻoheheʻe ʻia a me ka wela no nā huahana Bridges a me nā lawelawe / Standards & Publications / Standards Nā huahana

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Ke kila kūʻē i ka lewa ʻO ke kila kila Papa kila hana moku E hoʻohana i ka pā kila pale Kaha Kiʻekiʻe Haʻahaʻa Alloy Steel hao Kaona Pāpaʻa kila kāhili Pāpaʻa kila Alloy

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ʻIke huahana Hoʻohui kemika a me ka waiwai Mechanical

ʻIke huahana

ʻO ka ASTM A709 ka Manaʻo maʻamau no Structural Steel for Bridges a hoʻopili i ke kalapona, ikaika kiʻekiʻe haʻahaʻa haʻahaʻa, a me nā mea hoʻoheheʻe ʻia a me nā mea i hoʻohana ʻia e like me nā papa hana i ke kūkulu ʻana i nā alahaka. Hāʻawi ʻo Gnee i nā māka ʻelima o A709; 36, 50, 50W, HPS 50W a me HPS 70W. Loaʻa i nā māka ʻekolu ʻekolu o 50W, HPS 50W, a me HPS 70W he ASTM G101 i hoʻonui ʻia ʻo Atmospheric Corrosion Resistance Index o ≥6.0.

Hoʻohui kemika a me ka waiwai Mechanical

A709 Papa 36 Ka hoʻohui ʻana i nā mea hoʻokalakupua

Manoanoa mm	kila kila	Papa kila				Pōpoe Bar kila
Manoanoa mm	kila kila	≤20	20～≤40	40～≤65	65～≤100	≤20	20～≤40	40～≤100
C,max，%	0.25	0.25	0.25	0.25	0.27	0.26	0.27	0.28
Mn,%	…	…	0.80-1.20	0.80-1.20	0.80-1.20	…	0.60-0.90	0.60-0.90
P,max,%	0.04	0.04	0.04	0.04	0.04	0.04	0.04	0.04
S, ka nui,%	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05
ʻO Si	0.40 ka nui	0.40 ka nui	0.40 ka nui	0.15-0.40	0.15-0.40	0.40 ka nui	0.40 ka nui	0.40 ka nui
Cu, min,%	0.20	0.20	0.20	0.20	0.20	0.20	0.20	0.20

He 709 Gr. 36 waiwai mechanical

A709 Papa	Mānoanoa mm	Hāʻawi [MPa]	U'a [MPa]	Elongtation Min %				hoemi ana Min %	HB
				Papa kila		kila kila
				8in[200mm]	2in[50mm]	8in[200mm]	2in[50mm]
36[250]	≤100	[250]min	400-550	20	23	20	21	…	…
36[250]		[250]min	400 min	…	…	20	19	…	…
50[345]	≤100	345min	450 min	18	21	18	21F	…	…
50S[345S]	ʻO G	345-450HI	450minH	…	…	18	21	…	…
50W[345W] HPS50W[HPS345W]	≤100	345min	485min	18	21	18	21J	…	…
HPS70W[HPS485W]	≤100	485min	585-760	…	19K	…	…	…	…
100 [690], 100W [690W], HPS100W [HPS690W]	≤65	690 minB	760-895	…	18K	…	…	L	235-293M
100 [690], 100W [690W],	65-100	620 minB	690-895	…	16K	…	…	L	…