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Comparison to the new EN standards


Grade designation for steel spring strip

Tensile strength designation for steel spring strip
DIN 17222 EN 10132-4   DIN 17222 EN 10132-4
C 60 C 60 S soft annealed G A
C 67 C 67 S skin-passed LG LC
C 75 C 75 S hard-rolled K CR
    quenched and tempered (hardened) H+A QT


Grade designation for cold strip

Width tolerances (class A) for steel spring strip and cold strip with a width of 125 mm maximum
DIN 1624 EN 10139 Thickness range DIN 1544 EN 10140
St 2 DC 01 up to 0.40 mm + 0.30 mm +/- 0.15 mm
St 3 DC 03 from 0.41 to 0.60 mm + 0.40 mm +/- 0.15 mm
St 4 DC 04 from 0.61 to 1.50 mm + 0.40 mm +/- 0.20 mm
    from 1.51 to 2.50 mm + 0.60 mm +/- 0.25 mm
    from 2.51 to 4.00 mm + 0.80 mm +/- 0.35 mm


Tensile strength designation for cold strip
DIN 1624 EN 10139 DC 01 DC 03 DC 04
G A 270 - 390 N / mm² 270 - 370 N / mm² 270 - 350 N / mm²
LG LC 270 - 410 N / mm² 270 - 370 N / mm² 270 - 350 N / mm²
K32 C290 290 - 430 N / mm² 290 - 390 N / mm² 290 - 390 N / mm²
- C340 (new) 340 - 490 N / mm² 340 - 440 N / mm² 340 - 440 N / mm²
K40 C390 390 - 540 N / mm² 390 - 490 N / mm² 390 - 490 N / mm²
- C440 (new) 440 - 590 N / mm² 440 - 540 N / mm² 440 - 540 N / mm²
K50 C490 490 - 640 N / mm² 490 - 590 N / mm² 490 - 590 N / mm²
K60 C590 590 - 740 N / mm² min. 590 N / mm² 590 - 690 N / mm²


Cold-rolled flat products made of steel offering a high yield point for cold reduction

Hot-rolled strip and steel sheet with a higher yield point made of micro-alloyed steel
SEW 092 EN 10149-2 SEW 093 EN 10268
QSTE 260 NC     H 240 LA
QSTE 300 TM   ZSTE 260  
  S 315 MC   H 280 LA
  S 355 MC ZSTE 300  
QSTE 360 TM     H 320 LA
QSTE 380 TM   ZSTE 340  
QSTE 420 TM S 420 MC   H 360 LA
QSTE 460 TM S 460 MC ZSTE 380  
QSTE 500 TM S 500 MC   H 400 LA
QSTE 550 TM S 550 MC ZSTE 420  
QSTE 600 TM S 600 MC    
QSTE 650 TM S 650 MC    
QSTE 690 TM      
  S 700 MC    


Continuously hot-rolled steel sheet made of soft steel for cold reduction

Hot-rolled products made of unalloyed structural steel
DIN 1614 EN 10111 DIN 1623-2/1652-2 EN 10025
STW 22 DD 11 St 37-2 S 235 JR
STW 23 DD 12 St 44-2 S 275 JR
STW 24 DD 13 St 52-3 S 355 J2 G3