High-carbon steel: Annealed (+LC)

Transcription

1 Highcarbon steel: nnealed (+LC) Chemical Composition Classification Numerical European of symbols classification Standard (EN) C10E C15E Chemical Composition % C Si Mn Max. P Max. S Cr Mo V EN EN MnCr EN C22E EN C35E EN C45E EN CrMo EN CrMo EN C55S EN C60S EN C67S EN C75S EN C90S EN C100S EN CrV EN CrV EN Ni

2 Equivalents Classification of symbols Numerical pproximate international equivalents European Standard (EN) US Japan (JIS) China (G) C10E EN C15E EN SE S15C G G MnCr EN ISI MnCr C22E EN C35E EN C45E EN /684 S45C G G CrMo EN SE SCM 420 G CrMo 42CrMo EN SE SCM 440 G CrMo C55S EN C60S EN C67S EN /684 S65CCSP G G/T 1222 C75S EN /684 C90S EN C100S EN /684 SK4CSP G CrV EN /506 SUP 10 G CrV G/T CrV EN

3 Mechanical properties Rockwell hardness Classification of symbols Numerical values Mechanical properties and hardness requirements European Standard (EN) 1) of steel for springs Delivery condition annealed and skinpassed (+LC) nnealed and skinpassed (+LC) Rp0.2 N/mm² max Rm N/mm² max. 80 % min. Max. HV Max. HR. C10E EN C15E EN MnCr EN C22E EN C35E EN C45E EN CrMo EN CrMo EN C55S EN C60S EN C67S EN C75S EN C90S EN C100S EN CrV EN CrV EN )pproximate values. Note: it is possible to specify the hardness values or the tensile strength values, but not both. If neither of the two values is specified, the tensile strength value is calculated. The hardness/tensile strength specification must fall within a range of 150 N/mm² or 50 HV, unless stated otherwise in the commercial agreement.

4 Finishes EN :2000 The requirements regarding roughness can be agreed when requesting the quote or placing the order. Coldrolled strips should have a bright surface finish, as obtained during rolling or annealing in a controlled atmosphere.

5 Tolerances THICKNESS TOLERNCES ) Specified thickness tolerances for cold rolled strip and strip obtained strapping wide precision rolling w. ccording to the EN 10140:2006 Standard. Thickness tolerances according to EN for nominal widths w of Nominal Thickness t < and <600 C C normal fine precision normal fine precision 0.10 ± ± ± ± ± ± ±0.010 ± ± ± ± ±0.015 ± ± ± ± ± ± ± ± ± 0.60 ± ± ± ± ± ± 2.50 ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± ± > Sizes in mm. WIDTH TOLERNCES Width tolerances for strips with sheared edges Nominal Thickness t >= 0.1 < 0.4 Standard slitting tolerances for Metalle Schmidt GmbH 315 ± ) ± ) ± ) 1) <125 >150 ± 0,10 Width tolerances according to the EN Standard for nominal widths of: 2) 125 and < and <600 ± 0.15

6 Width tolerances for strips with sheared edges Nominal Thickness t >= < Standard slitting tolerances for Metalle Schmidt GmbH 315 ± 0,085 ± ) 4) 1) >150 ± 0,09 ± 0,10 ± 0,12 ± ) 4) 5) ± ) 4) 5) ± 0.12 ± 0.15 ± 0.16 Width tolerances according to the EN Standard for nominal widths of: < ) 4) 5) 125 and < and <600 ± ± 0.16 ± ± 0.16 ± ± ± 0.16 ± ± 0.40 ± ) Other, closer dimensional tolerances are possible under a commercial agreement 2) Including the value t= 0.4 3) Including the value t= 1 4) Including the value t= 1.5 5) Including the value t= 2.5 LENGTH TOLERNCES Positive tolerance in relation to the nominal length, according to the EN Standard for Length tolerances Closer tolerances are possible under a Nominal length L L 1000 commercial agreement +2 Class + 10 Class < L ,002L L +6 L > ,002L L L the Sizes in mm.

7 EDGE CMER TOLERNCES Closer edge curve tolerances possible under a commercial agreement Edge curve tolerances according to the EN Standard Maximum deviation 1000 mm Nominal width ( w) Thickness t Class (Normal) (maximum Class (FS) (Reduced) (maximum deviation) deviation) t 1.20 mm t > 1.20 mm 3 W< < W < W < W < W < W < W < W < 600 Sizes in mm.

8 The absolute value of the tolerance can be divided within that range.

9 RIPPLE LONGITUDINL FLTNESS The flatness tolerance of the strips in cut lengths in the direction of rolling must be a maximum of 10 mm over 1000 mm. ny other flatness requirement must be agreed when placing the order.