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Stainless Steel Balls AISI 440C
Hardened Stainless Steel
AISI 440C stainless steel balls afford the advantage of maximum hardness combined with corrosion-
resisting properties. This hardness, together with precise geometry and fine surface finish, makes them
especially useful for both bearing and valve applications in petroleum refineries and other severe
environmental applications.
Consumable electrode vacuum melted (CEVM) and vacuum induction melted/vacuum arc remelted
(VIM-VAR) material is available upon request. All sizes and grades of corrosion-resisting hardened
stainless steel balls are passivated.
Chemical Analysis
C=0.86-1.21%, Cr=16-18%, Mn=max 1.0%, Si=max 1.0%, S=max 0.025%, P=max 0.025%,
Mo=0.40-0.65%, Ni=max 0.75%, Cu=max 0.5%
Mechanical Properties
AISI 440C stainless steel balls are magnetic. Custom heat treating is available for special hardness
requirements.
AISI Stainless Steel AISI 420
Diameter range: 0.5mmmm-50.8mm
Grade: G100-G1000
Magnetic: Yes
Material Analysis:
C=12%-14%, Cr=15% max, Ni=1% max, Si=1% max, P=040% max, S=03%max
Hardened Stainless Steel
AISI type 420 stainless steel balls have fair-to-good corrosion resistance and good material strength.
They resist corrosion from alcohol, ammonia, food environments, fresh water, many petroleum products
and organic materials and some mild acid environments. They are found in bearings, valves, lighters and
writing instruments.
Stainless Steel Balls AISI 304
Diameter range: 0.5mm-50.8mm
Grade: G10-G1000
Hardness: HRC 25-39
Material Analysis:
C= max 0.15%, Cr=17 - 19%, Mn=max 2.0%, Si=max 1.00%, S= max0.03%, P=max 0.045%,
Ni=8-10%
Unhardened Stainless Steel
AISI type 304 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 type 304 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.
Non-magnetic properties available upon request. Applications include aerosol, sprayers, finger pump
mechanisms, milk machine blenders, food processing equipment and medical applications.
Stainless Steel Balls 316/316L
Diameter range: 2.381mm-31.75mm
Grade: G100-G1000
Material Analysis
316: C= max 0.07%, Cr=16.5 - 18.5%, Mn=max 2.0%, Si=max 1.00%, S= max 0.03%,
P=max 0.045%, Ni=10.5 – 13.5%, Mo=2 – 2.5%
316L: C= max 0.03%, Cr=16 - 18%, Mn=max 2.0%, Si=max 1.00%, S= max 0.03%,
P=max 0.045%, Ni=8 - 12%, Mo=2 - 3%
Unhardened Stainless Steel
AISI type 316 and 316L 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 type 316 and 316L 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.
Non-magnetic properties available upon request. Applications include aerosol, sprayers, finger pump
mechanisms, milk machine blenders, food processing equipment and medical applications.
1) Professional Manufacturer.
2) Factory Price & Best Quality
3) Fast Delivery
4) OEM Service
5) There are emergency stocks for regular sizes.
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