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S-2 Rockbit Tool Steel Shock Resisting Balls
  • S-2 Rockbit Tool Steel Shock Resisting Balls
  • S-2 Rockbit Tool Steel Shock Resisting Balls

S-2 Rockbit Tool Steel Shock Resisting Balls

S-2 ROCKBIT TOOL STEEL SHOCK RESISTING BALLS Alloy steel through hardened balls, they are featured by high tou

S-2 ROCKBIT TOOL STEEL SHOCK RESISTING BALLS

 

Alloy steel through hardened balls, they are featured by high toughness and wear/collision resistance. They are specifically indicated for drilling applications.

 

Applications

Oil-well drilling, well applications, offshore drilling devices.

 

Chemical Composition (%)

C

Si

Mn

P

S

Mo

V

0.40-0.550.90-1.20

0.30-0.50

0.030 max

0.030 max

0.30-0.60

0.50 max


International Standards

USA

GER

FRA

UK

RUS

CHN

ITA

JAP

T41902

-

-

-

Si-Mo

5SiMoV

-

-


Physical / Mechanical / Thermal / Electric / Magnetic Properties

Property

Symbol

U.o.M.

Type

Notes

Values

Density

δ

g/cm3

Physical

Room temp.

7.72

Young's modulus

E

GPa

Mechanical

-

200

Specific heat

c

J/(kg·℃)

Thermal

Room temp.

468

Coefficient of linear thermal expansion

α

10-6/ºC

Thermal

(ΔT=0-100°C)

10.8

Thermal conductivity

λ

W/(m·K)

Thermal

Room temp.

19.0

Electric resistivity

ρ

Ω*m*10-9

Electric

-

165

Relative magnetic permeability

µ

-

Magnetic

Ferromagnetic

> 500


Technical Data

Property

Type

U.o.M.

Values

U.o.M.

Values

Hardness

Mechanical

HRC

54-63

-

-

Ultimate compressive strength

Mechanical

MPa

2100 - 2200

psi*103

305-320

Service temperature

Thermal

ºC

-10/500

ºF

-40/932

 

Range

Diameters

U.o.M.

Diameters

U.o.M.

Precision Grade (ISO 3290)

3.175 - 152.400

mm

1/8 - 6

inch

G10 -......- G200

 

Corrosion Resistance

Good corrosion resistance in alkaline solutions, fairish in contact with salts or industrial atmospheres, poor in contact with water and steam, they do not resist in contact with acid substances.