302SS (Stainless Steel Balls)

AISI type 302 stainless steel balls meet requirements for an unhardened ball with excellent toughness and resistance to corrosion. Corrosion resistance may be increased through annealing. Both non-annealed and annealed balls are widely used in valves and related equipment.

Stainless steel type 302 balls are capable of resisting corrosion by such agents as oxidizing solutions, most organic chemicals, food stuffs and sterilizing solutions. They are moderately resistant to sulfuric acids.

Applications include aerosol, sprayers, finger pumps mechanisms, milk machine blenders, food processing equipment and medical applications.

302 Stainless Steel Balls: Available Grades and Sizes
Grade	Size Range in Inches and Millimeters
50 - 1000	1/8 - 2 3.175 - 50.800

Balls per Pound
Size		Balls per Pound
Inches	Millimeters	Balls per Pound
1/8	3.175	3,420
5/32	3.968	1,750
3/16	4.762	1,010
7/32	5.556	638
1/4	6.350	427
9/32	7.143	300
5/16	7.9.7	219
11/32	8.731	164
3/8	9.525	127
13/32	10.318	99.6
7/16	11.112	79.7
15/32	11.906	64.8
1/2	12.700	53.4
17/32	13.493	44.5
9/16	14.287	37.5
19/32	15.081	31.9
5/8	15.875	27.4
21/32	16.668	23.6
11/16	17.462	20.6
23/32	18.256	18.0
3/4	19.050	15.8
25/32	19.843	14.0
13/16	20.637	12.5
27/32	21.431	11.1

Balls per Pound
Size		Balls per Pound
Inches	Millimeters	Balls per Pound
7/8	22.225	9.97
29/32	23.018	8.97
15/16	23.812	8.10
31/32	24.606	7.35
1	25.400	6.68
1 1/8	28.575	4.69
1 1/4	31.750	3.42
1 3/8	34.925	2.57
1 1/2	38.100	1.98
1 5/8	41.275	1.56
1 3/4	44.450	1.26
1 7/8	47.625	1.02
2	50.800	.844


	Material Analysis: All sizes and grades are of the highest quality and in accordance with AISI type 302. Passivation to ASTM A380 is available upon request..

Material	AISI	Federal	Military	ASTM	UNS	AMS
Stainless Steel Type 302	302	QQ-S-763	-	A-493	S-30200	-

Chemical Analysis
Carbon................................................................	0.15% maximum
Chromium...........................................................	17.0% to 19.0%
Manganese.........................................................	2.0% maximum
Silicon..................................................................	1.0% maximum
Nickel	8.0% to 10.0%
Phosphorus.........................................................	0.045% maximum
Sulphur................................................................	0.03% maximum

Mechanical Properties Hardness as measured on parallel flat surfaces is Rockwell “C” 25-39.
Tensile Strength..................................................	80,000 to 180,000 psi
Yield Strength......................................................	50,000 to 150,000 psi
Elongation in two inches....................................	10.0% to 50.0%
Reduction in area................................................	55.0% to 65.0%
Modulus of elasticity...........................................	29,000,000 psi
Density.................................................................	0.286 lbs./cu. in