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Part Number

Hardenable, Unalloyed free-cutting steel

Chemical Composition Limits

Weight %  C Si Mn P Pb S Fe
LABOR Pb  0.65-0.75 0.10-0.40  0.50-0.90  0.07 Max  0.15-0.30 0.15-0.30 Rem 

Other Chemically similar Specifications 

Weight %  C Si Mn P Pb S Fe
WS 1.0759  0.65-0.75 0.10-0.40   0.50-0.90  0.07 Max  0.15-0.30 0.15-0.30 Rem 
DIN 70 SPb 20  0.65-0.75 0.10-0.40   0.50-0.90  0.07 Max  0.15-0.30 0.15-0.30 Rem 

LABOR Pb material is Manufactured in Rod, Bar and coil

WS 1.0759 Steel - Free Cutting - Unalloyed


Stock Range 

Range from 0.80 to 12.50mm


3.00mm drawn decarb free and polished

3.00mm drawn decarb free, ground and polished, surface Ra 0.40


Mechanical Properties

Tensile Strength at delivery from 650 to 900 N/mm2



Available in 3 or 2 mtr bars or in coil for Escomatic machines


Heat Treatment

810-830C hardening in oil for <5mm

790-810C hardening in oil for <5mm

660-700C soft annealing


Max obtainable hardness

63-65 HRC 9 for parts with high hardness.


Cutting Rate

60 to 80m/min dependant on lubrication oil, the cutting tool and the shape of the parts



h8, more accurate tolerances available on request.



Every effort is made to ensure that technical specifications are accurate. However, technical specifications included herein should be used as a guideline only. All specifications are subject to change without notice.

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