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Material specification sheet Saarstahl - C55R (Cm55)

Material specification sheet Saarstahl - C55R (Cm55)

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<strong>Material</strong> <strong>specification</strong> <strong>sheet</strong><br />

<strong>Saarstahl</strong> - <strong>C55R</strong> (<strong>Cm55</strong>)<br />

<strong>Material</strong> No.:<br />

1.1209<br />

Former brand name:<br />

R 5<br />

International steel grades:<br />

BS: 070M55<br />

AFNOR: <strong>C55R</strong>, 3C55, XC55H1<br />

SAE: 1055<br />

<strong>Material</strong> group: Steel for quenching and tempering according to DIN EN 10083<br />

Chemical<br />

composition:<br />

(Typical analysis in %) 0,55 0,25 0,75<br />

C Si Mn S other<br />

0,020<br />

0,035<br />

Application: Plain carbon steel for mechanical engineering and automotive<br />

components.<br />

Hot forming and<br />

heat treatment:<br />

Mechanical<br />

Properties:<br />

Forging or hot rolling:<br />

Normalising:<br />

Soft annealing:<br />

Hardening:<br />

Tempering:<br />

Treated for cold shearability +S:<br />

Soft annealed +A:<br />

Quenched and tempered, +QT:<br />

1100 - 850°C<br />

825 - 865°C/air<br />

680 - 710°C/furnace<br />

805 - 845°C/oil, water<br />

550 - 660°C/air<br />

max. 255 HB<br />

max. 229 HB<br />

Diameter d [mm] < 16 >16 – 40 >40 – 100 >100 – 160 >160 – 250<br />

Thickness t [mm] < 8 8


Normalised, +N:<br />

Diameter d [mm] < 16 >16 – 100 >100 – 250<br />

Thickness t [mm] < 16 16

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