NF A32 - 101 Standard for Grey Iron

We met the FGL degrees from Franch and Italy clients, but it is very difficult to find the standard NF A32-101 from internet. We found they are similar with China standard GB T9439 - 1998, so we modified the GB T9439 - 1998 into NF A32 - 101 1997 according to our understanding. Therefore, the following main content is not real NF A32-101 standard. We just made it for your reference.

This is a  standard for stipulating the physical properties of grey iron, or called as gray cast iron. This standard is similar with the other standards for grey iron such as ASTM A48 in USA, DIN 1691 in Germany and ISO 185. The following is the main content of NF A32 - 101 1997 standard for your reference.

Grade	Cast integral test bar Tensile strength σb≥/Mpa	castings
		Thickness /mm	Tensile strength σb≥/Mpa
FGL150	150	>2.5~10 >10~20 >20~30 >30~40	175 145 130 120
FGL200	200	>2.5~10 >10~20 >20~30 >30~40	220 195 170 160
FGL250	250	>4.0~10 >10~20 >20~30 >30~50	270 240 220 200
FGL300	300	>10~20 >20~30 >30~50	290 250 230
FGL350	350	>10~20 >20~30 >30~50	340 290 260

Grade	Hardness grade	Hardness range of casting HBS	Relevant microstructure
FGL150	H175	150~200	ferrite＋pearlite
FGL200	H195	170~220	pearlite
FGL250	H215	190~240	pearlite
FGL300	H235	210~260	pearlite（inoculated cast iron）
FGL350	H255	230~280	pearlite（inoculated cast iron）

Grade	Thickness /mm	C	Si	Mn	P ≤	S ≤
FGL150	<30 30~50 >50	3.3~3.5 3.2~3.5 3.2~3.5	2.0~2.4 1.9~2.3 1.8~2.2	0.5~0.8 0.5~0.8 0.6~0.9	0.2 0.2 0.2	0.12 0.12 0.12
FGL200	<30 30~50 >50	3.2~3.5 3.1~3.4 3.0~3.3	1.6~2.0 1.5~1.8 1.4~1.6	1.7~0.9 0.8~1.0 0.8~1.0	0.15 0.15 0.15	0.12 0.12 0.12
FGL250	<30 30~50 >50	3.0~3.3 2.9~3.2 2.8~3.1	1.4~1.7 1.3~1.6 1.2~1.5	0.8~1.0 0.9~1.1 1.0~1.2	0.15 0.15 0.15	0.12 0.12 0.12
FGL300	<30 30~50 >50	2.9~3.2 2.9~3.2 2.8~3.1	1.4~1.7 1.2~1.5 1.1~1.4	0.8~1.0 0.9~1.1 1.0~1.2	0.15 0.15 0.15	0.10 0.10 0.10