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Steel 45FL

Designation

Name The value
Designation GOST Cyrillic 45ФЛ
Designation GOST Latin 45FL
Transliteration 45FL
The chemical elements 45V

Description

45FL steel is used: for the manufacture of wear-resistant casting parts of tractors; parts of metallurgical equipment; parts of equipment for other branches of engineering where you require increased durability.

Standards

Name Code Standards
Castings, steel В82 GOST 977-88

Chemical composition

Standard C S P Mn Si Fe V Ti
GOST 977-88 0.42-0.5 ≤0.04 ≤0.04 0.4-0.9 0.2-0.52 The rest 0.05-0.1 ≤0.03
Fe is the basis.
The mass fraction of S and P content is indicated for 1 group of castings from the base steel. The content of sulfur and phosphorus in the castings of groups 2 and 3, in sour and basic open-hearth steel - see Table 4a in GOST 977-88.

Mechanical characteristics

Section, mm sT|s0,2, MPa σB, MPa d5, % y, % kJ/m2, кДж/м2 Brinell hardness number, MPa
Quenching with 880-920 °C + vacation at 600-650 °C, air cooling
100 ≥491 ≥687 ≥12 ≥20 ≥294 -
Normalization at 880-920 °C + vacation at 600-650 °C, air cooling
100 ≥392 ≥589 ≥12 ≥20 ≥294 170-229
Normalization at 940 °C (endurance 3,5 h), air cooling
100 ≥580 ≥710 ≥18 ≥26 ≥360 -

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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