ASTM A709 ígwè

Igwe nchara siri ike dị elu, nke nwere obere alloy arụnyere n'ọrụ n'ụzọ bụ isi n'ịrụ àkwà mmiri. Gnee steel ebuka A709 Ọkwa 36, ​​A709 Ọkwa 50 na A709 Ọkwa 50W. A na-akọwakarị akara ule ndị a site na iji ule Charpy na-ezo aka na mpaghara a kapịrị ọnụ ma ọ bụ okpomọkụ ọrụ a na-atụ anya ya. A na-akọwapụta ule Charpy dị ka ihe na-adịghị agbaji agbaji dị oke egwu, nke bụ ule ọkụ ọkụ (ugboro "H"), ma ọ bụ mgbaji dị egwu, nke bụ ule kwa-efere (Frequency "P").

Nkọwapụta:
Ọkpụrụkpụ: 3mm-150mm
Obosara: 30mm-4000mm
Ogologo: 1000mm--12000mm
Ọkọlọtọ: ASTM EN10025 JIS GB

ASTM A709 (Ọkwa 36, ​​50 na 50W) Ngwakọta kemịkalụ

A709 Steel mejupụtara
	Nkeji 36	Nkeji 50	Ọkwa 50W
Carbon	0.26%	0.23%	0.2% kacha
Manganese	…	1.35%	0.75-1.35%
Phosphorus	0.04%	0.03% kacha	0.03% kacha
sọlfọ	0.05%	0.03% kacha	0.03% kacha
Silikoni	0.4% kacha	0.15-0.4%	0.15-0.5%
Nickel	…	…	0.5% kacha
Chromium	…	…	0.4-0.7%
Ọla kọpa	0.2%	…	0.2-0.4%
Vanadium	…	…	0.01-0.1%

Ihe eji arụ ọrụ 709 Gr 36:

Ike: 58 ruo 80 ksi
Mpụta:36 ksi min
Ogologo oge: 18% nkeji na 8" 21% nkeji na 2"

Ihe eji arụ ọrụ 709 Gr 50:

Ntugharị: 65 min ksi
Mpụta: 50 ksi min
Mgbatị: 16% nkeji na 8" 19% nkeji na 2"

Ihe eji arụ ọrụ 709 Gr 50W:

Ntugharị: 65 min ksi
Mpụta:50 ksi min
Mgbatị: 16% nkeji na 8" 19% nkeji na 2"