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steel grit


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Product ---steel grit

Project		National Standards	Quality
Chemical Composition%	C	0.85-1.20	0.85-1.0
	Si	0.40-1.20	0.70-1.0
	Mn	0.60-1.20	0.75-1.0
	S	<0.05	<0.030
	P	<0.05	<0.030
Hardness	GP	HRC46-50	HRC46-50
	GL	HRC56-60	HRC56-60
	GH	HRC63-65	HRC63-65
Density		≥7.40 g/cm3	7.6 g/cm3
microstructure		tempered martensite	The tempered martensite + bainite turns round organizes
Appearance		Polygon Spherical, hemispherical, flat-shaped particles＜10％ Crack 40%	Polygon， Spherical, hemispherical, flat-shaped particles＜5％ Crack 30%

Particle size distribution table：

Screen No	In	Screen Size	SAE J444 steel grit
Screen No	In	Screen Size	G10	G12	G14	G16	G18	G25	G40	G50	G80	G120
6	0.132	3.35
7	0.111	2.80	All Pass
8	0.0937	2.36		All Pass
10	0.0787	2.00	≥80%		All Pass
12	0.0661	1.70	≥90%	≥80%		All Pass
14	0.0555	1.40		≥90%	≥80%		All Pass
16	0.0469	1.18			≥90%	≥75%		All Pass
18	0.0394	1.00				≥85%	≥75%		All Pass
20	0.0331	0.850
25	0.0280	0.710					≥85%	≥70%		All Pass
30	0.0232	0.600
35	0.0197	0.500
40	0.0165	0.425						≥80%	≥70%		All Pass
45	0.0138	0.355
50	0.0117	0.300							≥80%	≥65%		All Pass
80	0.007	0.180								≥75%	≥65%
120	0.0049	0.125									≥75%	≥60%
200	0.0029	0.075										≥70%
GB			2.5	2.0	1.7	1.4	1.2	1.0	0.7	0.4	0.3	0.2

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ADD：No.2, Mengshui Development Zone, Zhoucun,Zibo　
TEL：0533-6888345 FAX：0533-6888897 E-mail:shichang@taa.net.cn