1.0535 (C55)

Classification

Country Section Category
Germany Non-alloy Steels Steels with Average 0,25% =< C < 0,55% or 500 MPa =< Rm < 700 MPa

Chemical composition

Standard Fe, % Si, % Mn, % Cr, % Ni, % P, % C, % S, % Mo, %
97.11–98.88 < 0.4 0.6–0.9 < 0.4 < 0.4 < 0.045 0.52–0.6 < 0.045 < 0.1

Information on suppliers

Mechanical properties at 20 °C

Rolling Standard Size, mm Tension Classifiers $$\sigma _{U}$$, $$MPa$$ $$\sigma_{0.2}$$, $$MPa$$ $$\epsilon_L$$, % $$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$, % $$R_{eH}$$, $$MPa$$ Treatment
< 16 normalization 680 11 370
16–100 normalization 640 12 330
100–250 normalization 620 12 300
250–500 normalization 600 260
500–1000 normalization 590 250
5–10 solid, cold drawn 770–1100 590 5
10–16 solid, cold drawn 730–1080 520 6
16–40 solid, cold drawn 690–1050 440 7
40–63 solid, cold drawn 650–1030 390 8

Brinell hardness number

Rolling Standard Classifiers Value, HBW
improved machinability 255
annealing, soft 229
rolling, turning 181–269

Analogues

CIS, Russia, Ukraine
55
50

Standards

Standard Description
EN 10025
EN 10277-2

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
$$\epsilon_L$$ % Elongation at break (longitudinal)
$$\epsilon_{L (L_0 = 5.65\sqrt{S_o})}$$ % Elongation at break (longitudinal) (for L0 = 5.65√So)
$$R_{eH}$$ $$MPa$$ Upper yield point