Gray Cast Iron,Grey Cast Iron and Cast Iron Foundry in China

Source: Author: LT Foundry Publish time: 2020-07-14 04:38 370 Views

Gray Cast Iron,Grey Cast Iron and Cast Iron Foundry in China

Gray cast iron means cast iron with flake graphite,It is called gray cast iron because the fracture is dark gray.The main components of gray cast iron are iron, carbon, silicon, manganese, sulfur, phosphorus,which is the most widely used cast iron, and total output over 80% of total cast iron output.The main products include Gray Iron Foundation Plates,Cast Iron Manhole Cover,Iron Casting Manhole Cover,Cast Iron Pan,Cast Iron Counter Weight Crane Ball,Counter Weight Block Grey Iron Pump Body,Cast Iron Stove Burner and so on.

Gray cast iron is a kind of cast iron,Gray cast iron has good casting machining performance and wear resistance.So cast iron is still one of the main mechanical materials.The composition of cast iron is roughly as follows: C:2.0~4.0%,Si:0.6~3.0%,Mn0.2~1.2%,P:0.1~1.2%,S:0.08~0.15%. However, in order to further improve the mechanical properties of cast iron, our foundry adds alloy elements such as Cr,Mo,V,Al, which is called alloy cast iron.

Material grade：Gray cast iron,Cast iron,Grey iron

ISO 100,150,200,250,300,350

ASTM A48 No.20,No.25,No.30,No.40,No.45,No.50,No.55,No.60

JIS FC100,FC150,FC200,FC250,FC300,FC350

DIN GG10,GG15,GG20,GG25,GG30,GG35

EN1563 EN-GJL-100,EN-GJL-150,EN-GJL-200,EN-GJL-250,EN-GJL-300,EN-GJL-350

BS2789 Grade 100,Grade 150,Grade 180,Grade 220,Grade 260,Grade 3000,Grade 350

ΓOCT 7293-1985 Γч10,Γч15,Γч18Γч20,Γч21,Γч24,Γч25,Γч30,Γч35

GB HT100,HT150,HT200,HT250,HT300,HT350

In order to further improve the cutting machining performance,surface hardness and wear resistance etc,Dandong foundry will take the heat treatment process on gray cast iron parts,Main production process Stress Relieving,graphitizing annealing and case hardening.

Physical and Mechanical Properties

Item according to DIN EN 1561	Measure	Unit	EN-GJL-150	EN-GJL-200	EN-GJL-250	EN-GJL-300	EN-GJL-350
Item according to DIN EN 1561	Measure	Unit	EN-JL 1020	EN-JL 1030	EN-JL 1040	EN-JL 1050	EN-JL 1060
Tensile Strength	Rm	MPA	150-250	200-300	250-350	300-400	350-450
0.1% Yield Strength	Rp0,1	MPA	98-165	130-195	165-228	195-260	228-285
Elongation Strength	A	%	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8	0,3 – 0,8
Compressive Strength	σdB	MPa	600	720	840	960	1080
0,1% Compressive Strength	σd0,1	MPa	195	260	325	390	455
Flexural Strength	σbB	MPa	250	290	340	390	490
Schuifspanning	σaB	MPa	170	230	290	345	400
Shear Stress	TtB	MPa	170	230	290	345	400
Modules of elasticity	E	GPa	78 – 103	88 – 113	103 – 118	108 – 137	123 – 143
Poisson number	v	–	0,26	0,26	0,26	0,26	0,26
Brinell hardness		HB	160 – 190	180 – 220	190 – 230	200 – 240	210 – 250
Ductility	σbW	MPa	70	90	120	140	145
Tension and pressure change	σzdW	MPa	40	50	60	75	85
Breaking Strength	Klc	N/mm3/2	320	400	480	560	650
Density		g/cm3	7,10	7,15	7,20	7,25	7,30

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