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Steel R6M5K5

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Designation

Name The value
Designation GOST Cyrillic Р6М5К5
Designation GOST Latin P6M5K5
Transliteration R6M5K5
The chemical elements -

Description

R6M5K5 steel is used: for the manufacture of roughing to semi-finishing tool used in the processing of superior alloy and stainless steels.

Note

Steel has a high tendency to decarburization.

Standards

Name Code Standards
Sectional and shaped rolling В22 GOST 1133-71, GOST 2590-2006, GOST 2591-2006
Sheets and stripes В33 GOST 4405-75
Sectional and shaped rolling В32 GOST 7417-75, GOST 14955-77, GOST 19265-73, TU 14-11-245-88
Steel wire medium- and high-carbon В72 TU 14-1-2783-79

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Mo W Co
GOST 19265-73 0.86-0.94 ≤0.03 ≤0.03 0.2-0.5 3.8-4.3 0.2-0.5 ≤0.6 The rest ≤0.25 1.7-2.1 4.8-5.3 5.7-6.7 4.7-5.2
Fe is the basis.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % y, %
Rolled steel. Delivery condition
≥510 ≥850 ≥12 ≥14

Description mechanical marks

Name Description
Section Section
sT|s0,2 Yield strength or limit of proportionality with a tolerance for residual deformation of 0.2%
σB Limit short-term strength
d5 Elongation after rupture
y The relative narrowing

Physical characteristics

Temperature Е, ГПа G, ГПа r, кг/м3 l, Вт/(м · °С) R, НОм · м
0 220 83 8200 - 458
20 220 - 8200 - 458
100 - - - 27 -
200 - - - 28 -
300 - - - 29 -
400 - - - 30 -
500 - - - 32 -
600 - - - 36 -
700 - - - 34 -
900 - - - 29 -

A description of the physical symbols

Name Description
Е The normal elasticity modulus
r Density
l Coefficient of thermal conductivity
R UD. the resistivity

Technological properties

Name The value
Forging temperature Start - 1160 °C, the end - 850 °C.
Grindability good
Viscosity good
Resistance to wear increased

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