General Information

AISI 302 and 304 balls are for applications where material toughness and resistance to corrosion are more important than hardness. They have good corrosion resistance to the food environment, oxidizing solutions and most organic chemicals. Applications are valves, aerosol and finger pumps. Corrosion resistance is higher after annealing and passivation. Not resistant to sulphuric acids.

International Equivalents

DIN X5 CR Ni 18.09, AFN Z6 CN 18.09, EN58E, JIS SUS 304 Wks 1.4301

Material Specification

Composition	302	304
C	0.15 % Max	0.08 % Max
Cr	17 - 19 %	18 - 20 %
Ni	8 - 10 %	8 - 10 %
Si	1.0 % Max	1.0 % Max
Mo	1.0 % Max	-
Mn	2.0 % Max	2.0 % Max
P	0.045 % Max	0.045 % Max
S	0.03 % Max	0.03 % Max

 

Hardness
HRc	25 - 39
H.B.	140 - 160

(Annealed hardness on request)

Mechanical Properties
Tensile Strength	100,000 - 180,000 psi
Yield Strength	50,000 - 150,000 psi
Density	0.286 lbs/cu in

 

Size Range
1.588mm (1/16") to 50.80mm (2")

 

Standard Grades Available
50
100
200
1000