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steel shot

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Product---Steel shot

Technical specification

Project		National Standards steel shot	Quality steel shot
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	steel shot	HRC40-50 HRC55-62	HRC44-48 HRC58-62
Density	steel shot	≥7.20 g/cm3	7.4g/cm3
Microstructure		Tempered Martensite or Troostite	Tempered Martensite Bainite Composite organization
Appearance		Spherical Hollow particles﹤10% Crack particle<15%	Spherical Hollow particles﹤5％ Crack particle<10%

Particle size distribution table

Screen No	In	Screen Size	SAE J444
Screen No	In	Screen Size	S930	S780	S660	S550	S460	S390	S330	S280	S230	S170	S110	S70
6	0.132	3.35	All Pass
7	0.111	2.80		All Pass
8	0.0937	2.36	≥90%		All Pass
10	0.0787	2.00	≥97%	≥85%		All Pass	All Pass
12	0.0661	1.70		≥97%	≥85%		≤5%	All Pass
14	0.0555	1.40			≥97%	≥85%		≤5%	All Pass
16	0.0469	1.18				≥97%	≥85%		≤5%	All Pass
18	0.0394	1.00					≥96%	≥85%		≤5%	All Pass
20	0.0331	0.850						≥96%	≥85%		≤10%	All Pass
25	0.0280	0.710							≥96%	≥85%		≤10%
30	0.0232	0.600								≥96%	≥85%		All Pass
35	0.0197	0.500									≥97%		≤10%
40	0.0165	0.425										≥85%		All Pass
45	0.0138	0.355										≥97%		≤10%
50	0.0117	0.300											≥80%
80	0.007	0.180											≥90%	≥80%
120	0.0049	0.125												≥90%
200	0.0029	0.075
GB			2.8	2.5	2.0	1.7	1.4	1.2	1.0	0.8	0.6	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