A302 GR.D Boiler da Matsayin Jirgin Karfe

Boiler karfe farantin A302 Grade D ne irin gami karfe da manganese,Molybdenum da nickel.A302 Grade D ya ƙunshi mafi girma nickel kashi a mirgina fiye da tukunyar jirgi karfe farantin A302 Grade C.Pressure jirgin ruwa farantin karfe mallaki wannan darajar kewayon a inji dukiya kamar yadda A302 Grade B da A302 Grade C, samar da ƙarfi sama da 345 Mpa, da tensile ƙarfi tsakanin 550-690 Mpa.Gnee karfe so bayar da MTC karkashin format EN 10204 3.1 ko EN 10204 3.2 tare da ɓangare na uku dubawa.

Kauri: 6mm zuwa 300MM,
Nisa: 1500mm zuwa 4050mm,
Tsawon: 3000mm zuwa 15000mm

A302 Darajojin D Haɗin Sin
Carbon, max	%	Manganese, max	%	Silicon, max	%	Sulfur max	%
25mm ko ƙasa	0.2	Binciken Zafi	1.15-1.50	Binciken Zafi	0.15-0.40	Duk kauri	0.035
25-50 mm	0.23	Binciken Samfura	1.07-1.62	Binciken Samfura	0.13-0.45
fiye da 50mm	0.25
		Molybdenum max	%	Nickel max	%	Phosphorus	%
		Binciken Zafi	0.45-0.60	Binciken Zafi	0.70-1.0	Duk kauri	0.035
		Binciken Samfura	0.41-0.64	Binciken Samfura	0.67-1.03

Kayan Injini na A302 Grade D karfe	Babban darajar A302D
Ƙarfin ƙarfi, kis [MPa]	80-100 [550-690]
Ƙarfin bayarwa, min, sumba [MPa]	50 [345]
Tsawaitawa cikin inci 8 [200 mm], min, %	17
Tsawaitawa cikin inci 2 [50], min, %	20

Bukatun Fasaha & Ƙarin Sabis:
♦   Gwajin tashin hankali
♦   Gwajin tasirin ƙarancin zafin jiki
♦ An daidaita don faranti masu kauri sama da 40mm
♦  Simulated bayan-welded maganin zafi (PWHT)
Mirgina a ƙarƙashin daidaitaccen NACE MR-0175 (HIC+SSCC)
 An ba da takardar shaidar gwaji ta Orginal Mill a ƙarƙashin EN 10204 FORMAT 3.1/3.2
♦   Harbin fashewa da fenti, Yanke da walda kamar yadda buƙatun mai amfani