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Ball | SAE-AISI S2 (T41902) Shock-Resisting Steel 55SiMoVA

Ball | SAE-AISI S2 (T41902) Shock-Resisting Steel 55SiMoVA

Alloy steel through hardened balls, they are featured by high toughness and wear/collision resistance. They are specifically indicated for drilling applications. Shock-Resisting Steel: 55SiMoVA, SAE-AISI S2 (T41902), 55CMфA, 55CMoV, 55CM5фA

bearing ball

steel ball

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

-

-

-

-

-

0.40-0.55

0.90-1.20

0.30-0.50

0.030 max

0.030 max

0.30-0.60

0.50 max

-

-

-

-

-

International standards

ITA

USA

GER

FRA

UK

RUS

CHN

JAP

-

T41902

-

-

-

Si-Mo

55SiMoVA

-

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-K]

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 tensile strength

Mechanical

[MPa]

2100 - 2200

[psix10^3]

305 - 320

Service temperature

Thermal

[ºC]

-40 / 500

[ºF]

-40 / 932

Range

Diameters (min/max)

U.o.M.

Diameters (min/max)

U.o.M.

Precision grades

4.500 - 75.000

[mm]

3/16 - 3

["]

See section International Standards: ISO 3290-1 / DIN 5401 / AFBMA

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.


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