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AISI 420A/420B Stainless Steel Balls
  • AISI 420A/420B Stainless Steel Balls
  • AISI 420A/420B Stainless Steel Balls

AISI 420A/420B Stainless Steel Balls

AISI 420A/420B STAINLESS STEEL BALLSMartensitic stainless steel hardened balls, they feature good resistance to corrosio

AISI 420A/420B STAINLESS STEEL BALLS


Martensitic stainless steel hardened balls, they feature good resistance to corrosion and wear. Balls are provided in the passivated condition.

 

Applications

Similar to that of AISI 420C balls, when required hardness and wear resistance are lower.

 

Chemical Composition(%)

Type

C

Si

Mn

P

S

Cr

420A

0.16-0.25

1.00 max

1.50 max

0.040 max

0.030 max

12.00-14.00

420B

0.26-0.35

1.00 max

1.50 max

0.040 max

0.030 max

12.00-14.00


International Standards

USA

GER

FRA

UK

RUS

CHN

ITA

JAP

420A

1.4021

Z 20 C 13

420 S 37

20 Kh 13

2Cr13

X20Cr13

420 J1

420B

1.4028

Z 33 C 13

420 S 45

30 Kh 13

3Cr13

X30Cr13

420 J2


Physical / Mechanical / Thermal / Electric / Magnetic Properties

Property

Symbol

U.o.M.

Type

Notes

Value

Density

δ

g/cm3

Physical

Room temp.

7.73

Young's modulus

E

GPa

Mechanical

-

195

Specific heat

c

J/(kg·℃)

Thermal

Room temp.

450

Coefficient of linear thermal expansion

α

10-6/ºC

Thermal

(ΔT=0-100°C)

10.2

Thermal conductivity

λ

W/(m·K)

Thermal

Room temp.

27.4

Electric resistivity

ρ

Ω*m*10-9

Electric

-

680

Relative magnetic permeability

µ

-

Magnetic

Ferromagnetic

>600


Technical Data

Property

Type

U.o.M.

Value

U.o.M.

Value

Hardness

Mechanical

HRC

48-58

-

-

Ultimate compressive strength

Mechanical

MPa

1700-1900

psi*103

250-275

Service temperature

Thermal

ºC

0-400

ºF

32-752


Range

Diameters

U.o.M.

Diameters

U.o.M.

Precision Grade (ISO 3290)

1.588 - 304.800

mm

1/64 - 12

inch

G40 -....- G2000

 

Corrosion Resistance

AISI 420A/420B steels offer a corrosion resistance similar to 420C steel. Balls of these materials resist in contact with water, steam, oil and petrol.