ASTM A709 karfe

Farantin karfe mai ƙarfi mai ƙarfi, ƙaramin allo da aka yi amfani da shi da farko wajen kera gadoji. Gnee karfe hannun jari A709 Grade 36, A709 Grade 50 da A709 Grade 50W. Ana ƙididdige waɗannan maki sau da yawa tare da gwajin Charpy da ke nuna takamaiman yanki ko mafi ƙarancin zafin sabis. An ƙayyade gwaje-gwajen Charpy a matsayin rashin karyewa mai mahimmanci, wanda shine gwajin zafi na kowane lokaci (mita "H"), ko karaya mai mahimmanci, wanda shine gwajin-kwata-kwata (Frequency "P").

Bayani dalla-dalla:
Kauri: 3mm-150mm
Nisa: 30mm-4000mm
Tsawon: 1000mm--12000mm
Matsayi: ASTM EN10025 JIS GB

ASTM A709 (Grade 36, 50 da 50W) Haɗin Sinadarin

A709 Karfe Haɗin
	Darasi na 36	Darasi na 50	Babban darajar 50W
Carbon	0.26%	0.23%	0.2% max
Manganese	…	1.35%	0.75-1.35%
Phosphorus	0.04%	0.03% max	0.03% max
Sulfur	0.05%	0.03% max	0.03% max
Siliki	0.4% max	0.15-0.4%	0.15-0.5%
Nickel	…	…	0.5% max
Chromium	…	…	0.4-0.7%
Copper	0.2%	…	0.2-0.4%
Vanadium	…	…	0.01-0.1%

Kayayyakin Injini 709 Gr 36:

Juyawa: 58 zuwa 80 ksi
Haihuwa: 36 ksi min
Tsawaitawa: 18% min a cikin 8" 21% a cikin 2"

Kayayyakin Injini 709 Gr 50:

Tsayi: 65 min ksi
Amfani: 50 ksi min
Tsawaitawa: 16% min a cikin 8" 19% a cikin 2"

Kayayyakin Injini 709 Gr 50W:

Tsayi: 65 min ksi
Amfani: 50 ksi min
Tsawaitawa: 16% min a cikin 8" 19% min a cikin 2"