NF A32-101 FGL300 Gray Cast Iron

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FGL300 is a material grade of gray cast iron defined in France standard NF A32-101. It is also known as grade 300 (ISO 185), GG30 (DIN 1691) and EN-GJL-300 (EN 1561).

The followings are the applications, chemical composition, technological and physical values, mechanical properties, and equivalent grades for NF A32-101 FGL300 gray cast iron.

Applications for NF A32-101 FGL300 Gray Cast Iron:
FGL300 gray cast iron is normally used for castings for general mechanical engineering (machine casting) including shipbuilding, for machine tools, machines for textile and to electric industry, apparatus engineering, agricultural machinery, household machines, writing and calculating machines, turbine case, compressor.

Chemical Composition for NF A32-101 FGL300 Gray Cast Iron:
There is no any requirement about chemistry in the NF A32-101 standard. The iron foundries could adjust the chemical components according to their own experience, as long as their material could meet the mechanical properties. The following chemical composition for FGL300 gray cast iron is just for your reference.

C	Si	Mn	P	S
3-3.2%	1.3-1.9%	0.7-1%	P ≤ 0.20%	S ≤ 0.12%

Technological and physical values:
The followings are the technical and physical values for gray cast iron EN-GJL-300, which should be equivalent to FGL300

Item according to DIN EN 1561	Measure	Unit	EN-GJL-300
Equal to NF A32-101			FGL300
Tensile Strength	Rm	MPA	300-400
0.1% Yield Strength	Rp0,1	MPA	195-260
Elongation Strength	A	%	0,3 – 0,8
Compressive Strength	σdB	MPa	960
0,1% Compressive Strength	σd0,1	MPa	390
Flexural Strength	σbB	MPa	390
Schuifspanning	σaB	MPa	345
Shear Stress	TtB	MPa	345
Modules of elasticity	E	GPa	108 – 137
Poisson number	v	–	0,26
Brinell hardness		HB	200 – 240
Ductility	σbW	MPa	140
Tension and pressure change	σzdW	MPa	75
Breaking Strength	Klc	N/mm3/2	560
Density		g/cm3	7,25

Casting involved mechanical properties:
The following mechanical properties are for gray cast iron EN-GJL-300, which should be equivalent to FGL300.

Item according to DIN EN 1561	Tensile Strength cast in apart test piece [MPa]	Wall thickness [mm]		Tensile Strength in moded test piece [MPa] Min.	Expectation Values in the casting
		from	to		Tensile Strength [MPa] min. Values	Brinell hardness [HB] Max. Values
EN-GJL-300	300 – 400	10 20 40 80 150	20 40 80 150 300	– 250 220 210 190	270 240 210 195 –	260 240 230 215 205

Worldwide Equivalents of NF A32-101 FGL300 Gray Cast Iron:

EU EN	USA -	Germany DIN,WNr	Japan JIS	France AFNOR	England BS	Italy UNI	Spain UNE	Belgium NBN
EN-GJL-300 (EN-JL1050)	300/325 40B 45/50 45B	0.6030 GG30	FC300	FGL300	300 Grade300	G30	FG30	FGG30

China GB	Sweden SS	Bulgaria BDS	Hungary MSZ	Poland PN	Romania STAS	Australia AS	Austria ONORM
HT300	01-30-00 0130	Vch30	OV30	Z130	FC300	T300	GG30

Norway NS	Russia GOST	Inter ISO	India IS	Netherlands NEN	Taiwan -	Luxembourg -	COPANT -
SJG300	SCH30	300 JL300	FG300	GG30	FC300	FGG30	FG300

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