AISI 440C Stainless Steel Balls

AISI 440C Stainless Steel Balls have strong antirust ability, high precision,

and high hardness. It is martensitic stainless steel.

It is the highest hardness stainless steel ball, the hardness is higher than 58HRC.

It is usually used in industries with very strict requirements.

It have different names: SUS440C, 9Cr18.

The chemical composition of AISI 440C stainless steel balls:

C: 0.95% -1.20%. Mn: 1.00% max. P: 0.040% max. S: 0.030% max.

Si: 1.00%. Cr: 16.00-18.00%. Mo: 0.075% max.

SOYA Steel Ball Factory have inventory in commonly used standard sizes of

AISI 440C stainless steel balls, such as: 3mm, 1/8 inch, 5/32 inch, 3/16 inch, 6mm,

1/4 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch, 3/4 inch, 1 inch, etc.

Grade: G10 - G1000.

All commonly used sizes of AISI 440C stainless steel balls are in stock

to ensure a timely delivery.

SOYA Steel Ball Factory can also produce very small diameter AISI 440C stainless

steel balls less than 3mm, such as: 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm,

0.68mm, 0.8mm, 1mm, 1/16 inch, 2mm, 3/32 inch, etc.

SOYA Steel Ball Factory can also produce very large AISI 440C stainless steel

balls bigger than 1 inch, such as: 11/32 inch, 1 1/8 inch, 1 1/4 inch, 1 1/2 inch,

40mm, 2 inch, etc.

We can customize special sizes metal balls according to your requirements.

The Grade range of AISI 440C stainless steel balls is as follows:

Grade: G3, G5, G10, G16, G20, G28, G40, G60, G100, G200, G500, G1000.

The higher Grade will have the higher precision of steel balls.

AISI 440C stainless steel balls are usually used for below:

Aviation, Aerospace, Bearings, Motors, High precision instruments, Valves.

The following table shows the conversion of weight and quantity of

AISI 440C Stainless Steel Balls:

AISI 440C Stainless Steel Balls Diameter	Weight of 10,000 Balls(KG)	How many Balls per 1 KG	AISI 440C Stainless Steel Balls Diameter	Weight of 1000 Balls(KG)	How many Balls per 1 KG	AISI 440C Stainless Steel Balls Diameter	Weight of 1000 Balls(KG)	How many Balls per 1 KG
0.5mm	0.0051	1960780	8mm	2.09	478	20.637mm 13/16" inch	35.80	27.90
0.68mm	0.0128	781250	8.5mm	2.50	400	21mm	37.75	26.49
0.8mm	0.0209	478470	8.731mm 11/32" inch	2.71	369	21.4313mm 27/32" inch	40.10	24.90
1mm	0.0408	245100	9mm	2.97	337	22.225mm 7/8" inch	44.80	22.30
1.2mmm	0.0705	141840	9.525mm 3/8" inch	3.52	284	23mm	49.59	20.17
1.3mm	0.0893	111980	10mm	4.08	245	23.0188mm 29/32" inch	49.80	20.10
1.45mm	0.124	80645	10.3188mm 13/32" inch	4.48	223	23.8125mm 15/16" inch	55.10	18.20
1.588mm 1/16" inch	0.16	62350	11mm	5.42	185	24mm	56.34	17.75
1.75mm	0.218	45871	11.1125mm 7/16" inch	5.60	179	24.6063mm 31/32" inch	60.80	16.50
2mm	0.326	30700	11.5mm	6.22	161	25mm	63.68	15.70
2.3812mm 3/32" inch	0.550	18182	11.5094mm 29/64" inch	6.22	161	25.4mm 1" inch	66.80	15.00
2.5mm	0.637	15698	11.9062mm 15/32" inch	6.88	145	26.1938mm 11/32" inch	73.30	13.64
3mm	1.100	9091	12mm	7.04	142	26.9875mm 11/16" inch	80.20	12.47
3.175mm 1/8" inch	1.310	7634	12.3031mm 31/64" inch	7.60	132	27.7812mm 13/32" inch	87.40	11.40
3.5mm	1.750	5717	12.7mm 1/2" inch	8.35	120	28mm	89.47	11.18
3.969mm 5/32" inch	2.550	3922	13.4938mm 17/32" inch	10.00	100	28.575mm 1-1/8" inch	95.20	10.50
4mm	2.610	3831	14mm	11.18	89	30.1625mm 1-3/16" inch	112.00	8.93
4.7625mm 3/16" inch	4.410	2268	14.2875mm 9/16" inch	11.90	84	31.75mm 1-1/4" inch	130.60	7.66
5mm	5.100	1961	15.0812mm 19/32" inch	14.00	71.40	33.3375mm 1-5/16" inch	151.10	6.62
5.1594mm 13/64" inch	5.600	1786	15.875mm 5/8" inch	16.30	61.30	34.925mm 1-3/8" inch	173.80	5.75
5.5562mm 7/32" inch	6.990	1431	16mm	16.69	59.90	36.5125mm 1-7/16" inch	198.60	5.04
5.9531mm 15/64" inch	8.600	1163	16.6688mm 21/32" inch	18.90	52.90	38.1mm 1-1/2" inch	225.60	4.43
6mm	8.810	1136	17mm	20.02	50.00	40mm	261.10	3.83
6.35mm 1/4" inch	10.400	962	17.4625mm 11/16" inch	21.70	46.10	41.275mm 1-5/8" inch	286.80	3.49
6.5mm	11.190	894	18.2562mm 13/32" inch	24.80	40.30	42.8625mm 1-11/46" inch	321.20	3.11
6.7469mm 17/64" inch	12.500	800	19mm	27.96	35.77	44.45mm 1-3/4" inch	358.20	2.79
7.1438mm 9/32" inch	14.900	671	19.05mm 3/4" inch	28.20	35.50	47.625mm 1-7/8" inch	440.60	2.27
7.9375mm 5/16" inch	20.400	490	19.9438mm 25/32" inch	31.90	31.40	50.8mm 2" inch	534.70	1.87

The below table displays the AISI 440C Stainless Steel Balls Grade Standards:

AISI 440C Stainless Steel Balls Diameter Tolerance Grade Standard
Grade	Diameter variation	Spherical deviation	Surface roughness	Batch diameter variation	Basic diameter tolerance
	Vdws	△sph	Ra	Vdwl	Tdn
	Not More Than
	μm
G10	0.25	0.25	0.025	0.5	*
G16	0.4	0.40	0.032	0.8	*
G20	0.5	0.50	0.04	1	*
G28	0.7	0.70	0.05	1.4	*
G40	1.0	1.00	0.08	2	*
G60	1.5	1.50	0.10	3	*
G100	2.5	2.50	0.125	5	+/-12.5
G200	5	5	0.2	10	+/-25
G500	13	13	*	25	+/-50
G1000	25	25	*	50	+/-125
* It means not applicable

AISI 440C Stainless Steel Balls Batch Diameter Variation Commonly Used Gauge Values & Subdivision Gauge Values
Grade	Batch Diameter Variation	Vertical Spacing	Commonly Used Gauge Values	Subdivision Gauge Values	Subdivision Gauge Values
Grade	μm
G10	0.5	1	-9,...,-1,0,+1,...+9	0.2	-0.4,-0.2,0,+0.2,+0.4
G16	0.8	2	-10,...,-2,0,+2,...+10	0.4	-0.8,-0.4,0,+0.4,+0.8
G20	1	2	-10,...,-2,0,+2,...+10	0.4	-0.8,-0.4,0,+0.4,+0.8
G28	1.1	2	-12,...,-2,0,+2,...+12	0.4	-0.8,-0.4,0,+0.4,+0.8
G40	2	4	-16,...,-4,0,+4,...+16	0.8	-1.6,-0.8,0,+0.8,+1.6
G60	3	5	-20,...,-5,0,+5,...+20	1	-2,-1,0,+1,+2

The following table shows the chemical analysis of AISI 440C Stainless Steel Balls:

AISI 440C Stainless Steel Balls Chemical Composition
C	0.95% - 1.20%
Mn	1.00%
P	0.040% max.
S	0.030% max.
Si	1.00% max.
Cr	16.00% - 18.00%
Mo	0.075% max.

The following table shows the physical properties of AISI 440C Stainless Steel Balls:

AISI 440C Stainless Steel Balls Physical Properties
Tensile Strength	285,000 psi
Yield Strength	275,000 psi
Modulus of Elasticity	29,000,000 psi
Density	0.277 lbs/cubic inch