ASTM A709 lamina ferro

ASTM A709 est Standard Specification for Structural Steel for Bridges and carbo, virtus humilis mixturae ambit, et stannum stannum exstinguitur et temperatur, ut structurae laminis in pontium constructione adhibita. Gnee sequentes quinque gradus A709; 36, 50, 50W, HPS 50W et HPS 70W. Tres tempestates gradus 50W, HPS 50W, et HPS 70W  ASTM G101 auctum habent Index Corrosionis Atmosphaerici Resistentiae ≥6.0.

A709 Grade 36 Chemical composition Caloris analysis

densissima mm*	Structural chalybe	Steel Plate				Bar chalybe
		≤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,max,%	0.05	0.05	0.05	0.05	0.05	0.05	0.05	0.05
Si	0.40max	0.40max	0.40max	0.15-0.40	0.15-0.40	0.40max	0.40max	0.40max
Cu,min,%	0.20	0.20	0.20	0.20	0.20	0.20	0.20	0.20

A 709 Gr. 36 mechanica

A709 Grade	Crassitudo mm	Cede [MPa]	Tensile [MPa]	Prolongatio Min%				reductione Min %	HB
				Steel Plate		Structural chalybe
				8in[200mm]	2in[50mm]	8in[200mm]	2in[50mm]
36[250]	≤100	[250] min	400-550	20	23	20	21	...	...
		[250] min	400min	...	...	20	19	...	...
50[345]	≤100	345min	450min	18	21	18	21F	...	...
50S [345S]	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	690minB	760-895	...	18K	...	...	L	235-293M
100 [690], 100W [690W].	65-100	620minB	690-895	...	16K	...	...	L	...