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AISI 302/304/304L Stainless Steel Balls
  • AISI 302/304/304L Stainless Steel Balls
  • AISI 302/304/304L Stainless Steel Balls

AISI 302/304/304L Stainless Steel Balls

AISI 302/304/304L STAINLESS STEEL BALLSUnhardened austenitIc stainless steel balls, they display good mechanical characterist

AISI 302/304/304L STAINLESS STEEL BALLS


Unhardened austenitIc stainless steel balls, they display good mechanical characteristics, toughness and corrosion resistance. AISI 304L provides lower carbon content, AISI 302 better mechanical characteristics. Balls are provided in the passivated condition.

 

Applications

Special bearings and pumps, aerosol pumps, gardening and household sprayers, perfume miniature pumps, seams, medical application valves, agricultural backpack sprayers.

They are used in foodstuff, aerospace and military industry.

 

Chemical Composition(%)

Type

C

Si

Mn

P

S

Cr

Ni

N

302

0.150 max

1.00 max

2.00 max

0.045 max

0.030 max

17.00-19.00

8.00-10.00

0.100 max

304

0.080 max

0.75 max

2.00 max

0.045 max

0.030 max

18.00-19.00

8.00-10.50

0.100 max

304L

0.030 max

0.75 max

2.00 max

0.045 max

0.030 max

18.00-20.00

8.00-10.50

0.100 max


International Standards

USA

GER

FRA

UK

RUS

CHN

ITA

JAP

302

1.4310

Z11CN18-08

301S21

12KH18N9

1Cr18Ni9

X10CrNi18-8

SUS301

304

1.4301

Z7CN18-09

304S15

08KH18N10

0Cr18Ni9

X5CrNi1810

SUS304

304L

1.4307

Z3CN18-10

304S11

04KH18N10

00Cr19Ni10

X2CrNi18-9

SUS304L


Physical / Mechanical / Thermal / Electric / Magnetic Properties

Property

Symbol

U.o.M.

Type

Notes

Value

Density

δ

g/cm3

Physical

Room temp.

7.95

Young's modulus

E

GPa

Mechanical

-

200

Specific heat

c

J/(kg·℃)

Thermal

Room temp.

500

Coefficient of linear thermal expansion

α

10-6/ºC

Thermal

(ΔT=0-100°C)

17.5

Thermal conductivity

λ

W/(m·K)

Thermal

Room temp.

15.8

Electric resistivity

ρ

Ω*m*10-9

Electric

-

710

Relative magnetic permeability

µ

-

Magnetic

Ferromagnetic

1.025*


Technical Data

Property

Type

U.o.M.

Value

U.o.M.

Value

Hardness

Mechanical

HRC

10-25(1)*

HRC

25-39(2)*

Ultimate compressive strength

Mechanical

MPa

500-1300

psi*103

72-188

Service temperature

Thermal

ºC

-196/700

ºF

-320.8/1697


Range

Diameters

U.o.M.

Diameters

U.o.M.

Precision Grade (ISO 3290)

1.588 - 304.800

mm

1/16 - 12

inch

G40 -......- G2000


Corrosion Resistance

Very good corrosion resistance with respect to organic substances, oxidating solutions, foodstuff, sterilizing solutions.

Good resistance with respect to atmospheric corrosion and dyes.

They are subjected to pitting and crevice corrosion in presence of hot chloride solutions and to stress corrosion when temperature exceeds 60°C.

They do not resist to sulfuric acid solutions.

AISI 302 shows slightly best corrosion resistance with respect to AISI 304/304L stainless steels.


Notes

Property

Description

Hardness(1)(2)*

Balls can be supplied in the ANNEALED (HRC 10-25) or COLD WORKED (HRC 25-39) conditions.

Magnetism*

Eventual magnetism of AISI 316 balls and in general of all austenitic stainless steels strictly depends on the manufacturing process, specific inquiries for not magnetic balls should priorly reported.