1.5026 (55Si7)

Classification

Country Section Category
Germany Structural, Pressure Vessel and Engineering Steels Mn-Si-Cu

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
EN 10089 95.55–97.28 1.6–2 0.6–0.9 < 0.4 < 0.4 < 0.025 0.52–0.6 < 0.025 < 0.1

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{0.2}$$, $$MPa$$ $$\epsilon_{L (L_0 = 80 mm)}$$, % Treatment
0.3–3 annealing, soft 740 600 12
0.3–3 moderate hardening 1200–1700

Твёрдость по Викерсу

Rolling Standard Classifiers Value, HV
annealing, soft 230
moderate hardening 370–520

Brinell hardness number

Rolling Standard Classifiers Value, HBW
improved machinability 280
annealing, soft 248
annealing, carbide spheroidization 230

Analogues

CIS, Russia, Ukraine
55S2
55S2A

Standards

Standard Description
EN 10089

Description of chemical elements

Element Units of measurement Description
Fe % Iron
Si % Silicon
Mn % Manganese
Cr % Chrome
Ni % Nickel
P % Phosphorus
C % Carbon
S % Sulfur
Mo % Molybdenum

Description of mechanical properties

Parameter Units of measurement Description
$$\sigma_{0.2}$$ $$MPa$$ Tensile stress required to produce a total elongation of 0.2%
$$\sigma _{U}$$ $$MPa$$ Ultimate tensile strength
$$\epsilon_{L (L_0 = 80 mm)}$$ % Elongation at break (longitudinal) (for L0 = 80 mm)