Chrome 52100 CR100 Balls

Chrome steel balls are widely used in precision ball bearings, as well as, in a number of other industrial applications. Chrome steel balls have excellent surface quality, high hardness and high load bearing capacity, as a result of through hardening.

Only the finest quality chrome steel, produced in accordance with ASTM specification A-295, is used. Small size balls are made from wire stock while larger size balls are hot forged from bar stock. Modern furnaces with precisely controlled atmospheres and temperatures are used for heat treating to assure uniform hardness and proper microstructure for each chrome steel ball. Throughout the manufacturing process, statistical process control assures tolerance accuracy, fine surface finish and consistent high quality.

Consumable electrode vacuum melted (CEVM) available upon request.

Click here for sizes and pricing

Chrome Balls: Available Grades and Sizes
Miniature Precision Chrome Balls
Grade	Size Range in Inches and Millimeters
3	0.025 - 3/16 0.025 - 4.762
5	0.025 - 11/64 0.025 - 4.365
10 - 24 - 48 - 100	1/32 - 11/64 0.793 - 4.365
200	1/32 - 7/64 0.793 - 2.778

Chrome Balls: Available Grades and Sizes
*Precision Chrome Balls*
Grade	Size Range in Inches and Millimeters
5 - 10 - 16 - 24 - 48	3/16 - 7/8 4.762 - 22.225
100 - 200 - 500 - 1000	1/8 - 4 1/2 3.175 - 114.300

Balls per Pound
Size		Balls per Pound
Inches	Millimeters	Balls per Pound
1/32	0.793	221,000
3/64	1.190	66,900
1/16	1.587	27,600
3/32	2.381	8,190
1/8	3.175	3,460
5/32	3.968	1,770
3/16	4.762	1,020
7/32	5.556	645
1/4	6.350	432
9/32	7.143	303
5/16	7.937	221
11/32	8.731	166
3/8	9.525	128
7/16	11.112	80.6
1/2	12.700	54.0
9/16	14.287	37.9
5/8	15.875	27.6
11/16	17.462	20.8
3/4	19.050	16.0
13/16	20.637	12.6
7/8	22.225	10.1
15/16	23.812	8.19
1	25.400	6.75
1 1/16	26.987	5.75
1 1/8	28.575	4.74
1 3/16	30.162	4.12

Balls per Pound
Size		Balls per Pound
Inches	Millimeters	Balls per Pound
1 1/4	31.750	3.46
1 5/16	33.337	3.05
1 3/8	34.925	2.60
1 7/16	36.512	2.32
1 1/2	38.100	2.00
1 9/16	39.687	1.81
1 5/8	41.275	1.57
1 11/16	42.862	1.43
1 3/4	44.450	1.26
1 13/16	46.037	1.16
1 7/8	47.625	1.02
1 15/16	49.212	.948
2	50.80	.844
2 1/8	53.975	.703
2 1/4	57.151	.594
2 3/8	60.325	.504
2 1/2	63.500	.432
2 5/8	66.675	.373
2 3/4	69.850	.325
2 7/8	73.025	.284
3	76.200	.250
3 1/4	82.550	.197
3 1/2	88.900	.157
3 3/4	95.250	.128
4	101.600	.105
4/1/2	114.300	.074


	Material Analysis: Chrome balls are made from the following special chemical analysis. All sizes and grades are manufactured from AISI Type 52100 steel.

Material	CDA	Federal	Military	ASTM	UNS	AMS
Chrome Steel	52100	QQ-S-624b FED STD66b E 52100	MIL-S 980A(-1) MIL-B 1083C	A295-46T TYPE A	6440E G-52986	-MS 19059 7440(52100)

Chemical Analysis
Carbon................................................................	0.98% to 1.05%
Chromium...........................................................	1.30% to 1.60%
Manganese.........................................................	0.25% to 0.45%
Silicon..................................................................	0.15% to 0.35%
Sulphur................................................................	0.008% maximum
Phosphorus.........................................................	0.020% maximum

Mechanical Properties Chrome steel balls are uniformly hardened and tempered throughout their entire diameter to achieve maximum strength and quality. Ball hardness is controlled within the 60-67 HRC range as measured on parallel flat surfaces. Custom heat treating is available for special hardness and dimensional stability requirements.
Tensile Strength..................................................	325,000 psi
Yield Strength......................................................	295,000 psi
Elongation in two inches....................................	5%
Reduction in area................................................	8%
Modulus of elasticity...........................................	29,500,000 psi
Density.................................................................	0.283 lbs./cu. in.