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Chemical composition %   of   steel    (16NC6):   EN 10084-2008
Elements not quoted in this table shall not be intentionally added to the steel without the agreement of the purchaser, other than for the purpose of finishing the heat.
Steels with improved machinability as a result of the addition of lead or higher sulfur contents, depending on the manufacturing process up to around 0.1 % S, may be supplied on request. In this case, the upper limit of the manganese content may be increased by 0.15 %
C Si Mn Ni P S Cr
0.14 - 0.2 max   0.4 0.5 - 0.9 1.4 - 1.7 max   0.025 max   0.035 1.4 - 1.7

Mechanical properties of   steel    (16NC6)

Nominal thickness (mm):   to 16
Rm - Tensile strength (MPa) hardening and tempering at 200 1200
Rm - Tensile strength (MPa) (+AC) 600

Z - Reduction in cross section on fracture (%) 57-62

  Brinell hardness   (HBW):   (+S) 255
  Brinell hardness   (HBW):   (+A) 229
  Brinell hardness   (HBW):   (+TH) 175 - 229
  Brinell hardness   (HBW):   (+FP) 156 - 207