DIN 17222 C60 1.0601 Cold Rolled Steel Strips for Springs

Cold rolled steel strip for springs is distinguished by high dimensional accuracy and good surface quality and, in the cold rolled + hardened + tempered condition (H + A) offers the possibility of achieving high values of hardness, tensile strength and elastic limit.

C60 1.0601 Introduce

C60 1.0601 steel is an unalloyed medium carbon engineering steel which has 0.57%-0.65% Carbon. It will obtain high hardness and high strength after hardening due to the relatively high carbon content.

C60 1.0601 Dimensions and permissible deviations

Thickness: 0.1 to 4mm; Tolerances: +/- 0.008 to 0.11 mm

Width: 10 to 600mm; Tolerances: +/- 0.15 to 0.60mm

C60 1.0601 Equivalent Grade

C60 1.0601 Chemical composition

C60 1.0601 Treatment condition on delivery

Cold rolled + soft annealed : G

Cold rolled + hardened + tempered : H + A

C60 1.0601 Mechanical properties in the cold rolled + soft annealed condition G

C60 1.0601 Tensile strength in the cold rolled + hardened + tempered condition (H + A)

C60 1.0601 Vickers hardness in the cold rolled + hardened + tempered condition (H + A)

C60 1.0601 Surface condition

Strip to be supplied in the

1 cold rolled + soft annealed G or

2 cold rolled + soft annealed + cold rolled (G + K) condition

must have a bright, metallically clean surface.

Cold rolled + hardened + tempered (H + A) strip is supplied, as agreed at the time of ordering, with

1 grey-blue (GR),

2 bright (8K),

3 polished (P) or

4 polished and colour-tempered (P & AF) surface.

C60 1.0601 Types of heat treatment

Approximate values for heat treatment and minimum hardness values in the hardened condition of cold rolled steel strips for springs

C60 1.0601 Acceptance testing and test certificates

EN 10204/3.1 with all relevant data reg. chem. composition, mech. properties and results of testing.