 
 
201 stainless steel ball 
Diameter: 0.5mm to 100mm 
Surface: polish, electroplat, baking paint 
Hardness: HRC21 ° 
Process: drill hole , thread 
Hole diameter: 0.6mm-30mm 
Thread size: Metric, British, American thread 
Features: low price, poor rust resistance. 
Application:hardware, ornaments, accessories, cosmetics, industry, industries with low requirements for antirust performance.

304 stainless steel ball 

Diameter : 0.5mm to 100mm 

Surface: polish, electroplat, baking paint Hardness: HRC25 ° 

Process: drill hole , thread 

Hole diameter : 0.6mm-30mm 

Thread size: Metric, British, American thread 

Features: widely used, good rust proof performance, good surface effect, environmental protection certification. 

Application:electrical appliances, cosmetics, bearing slide, medical equipment, jewelry and many other industries.

316 stainless steel ball 

Diameter: 0.5mm to 100mm 

Surface: polish, electroplat, baking paint 

Hardness: HRC26 ° 

Process: drill hole , thread 

Hole diameter: 0.6mm-30mm 

Thread size: Metric, British, American thread 

Features: best antirust, good surface effect, contact with human body. 

Application:medical equipment, skin contact, food grade, industry and many other industries.

Component(%)	C	Cr	Ni	N	Si	Mn	S	P	Fe
SS 304	≤0.08	18.0-20.0	8.0-10.5	≤0.1	≤0.75	≤1.0	≤0.03	≤0.045	Bal.

Component(%)	C	Cr	Ni	Si	Mn	S	P	HRC
SS 420	0.25-0.35	12.0-14.0	≤0.75	≤1.0	≤1.0	≤0.03	≤0.04	55

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