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Steel 5KH3V3MFS (DI23)

Designation

Name The value
Designation GOST Cyrillic 5Х3В3МФС
Designation GOST Latin 5X3B3MFC
Transliteration 5H3V3MFS
The chemical elements 5Cr3W3MoVС
Name The value
Designation GOST Cyrillic ДИ23
Designation GOST Latin DI23
Transliteration DI23
The chemical elements CuИ23

Description

Steel 5KH3V3MFS used: for the manufacture of heavily loaded forming tool (piercing and forming punches, matrices, etc.); instrument for landing on horizontal forging machines and inserts of dies strained structures, for hot volumetric deformation of structural steels and heat-resistant metals and alloys (instead of less heat-resistant steel grades 3Х2В8Ф and 4KH2V5MF). Most high hardenability and heat resistance of a steel brand 5ХЗВЗМФС.

Standards

Name Code Standards
Sheets and stripes В33 GOST 4405-75, TU 14-131-971-2001
Sectional and shaped rolling В32 GOST 5950-2000, GOST 14955-77

Chemical composition

Standard C S P Mn Cr Si Ni Fe Cu V Ti Mo Nb W
GOST 5950-2000 0.45-0.52 ≤0.03 ≤0.03 0.2-0.5 2.5-3.2 0.5-0.8 ≤0.4 The rest ≤0.3 1.5-1.8 ≤0.03 0.8-1.1 0.05-0.15 3-3.6
Fe is the basis.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % y, % kJ/m2, кДж/м2
Rolled steel. Quenching in oil from 1130 °C to + Vacation at 560-580 °C (exposure 2 hours)
15 ≥1472 ≥1650 ≥8 ≥38 ≥245

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
kJ/m2 Toughness

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