440C/AISI440C Stainless steel ball:

  

 Area of Application:

 It is usually used in the industries of motor parts,pulley,stainless ball bearings,plastic bearings,artware,petroleum,valve and so on.

Feature:

High precision

Good Magnetism

Good rust-proof

The hardness is most,HRC>58.

440C/AISI440C Stainless steel ball's chemistry and physics composition

 

C	0.95-1.2%
Cr	16.0-18.0%
Si	1.00%
Mn	1.0% Max.
P	0.040%
S	0.030%
Mo	0.075% Max

 

Strength extension	285000 psi
Yield strength	275000 psi
Elasticity modulus	29000000 psi
Density	0.277 lbs/cubic inch

 

Photos show

 

 

Packaging & Shipping

 

Packing Details  :Carton packaging, woven bag, carton + tray, drum, or according to customer requirements packaging

Delivery Details : 3-5 days after order ,According to the order quantity

 

 

Our Certification

 

Production process

Steel ball detection

Steel ball hardness test

Steel ball is generally used Rockwell hardness tester to detect hardness, multi use HRC+ value to express.

1. Bearing steel ball hardness is generally HRC60-66;

2.stainless steel ball hardness is generally about HRC26;

3.carbon steel ball hardness is generally HRC55-65; 

4.soft carbon steel ball hardness is about HRC30;

 

 

Steel ball roundness tester

G5, G10 high precision steel ball is mainly to measure the degree of ellipticity, that is, the ball spherical error, mainly with a roundness meter to detect. Through its measurement, the computer can draw a very accurate trajectory, so as to determine whether or not the ellipticity.

 

 

Digital micrometer measurement

Steel ball is the most important measure of the size of the tolerance with a micrometer, or with a spiral micrometer detection, large steel ball with vernier caliper to measure;

 

 

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