1) Cast analysis.
2) The steel shall be supplied in the killed condition.
3) Steels with improved machinability either by higher S levels up to about 0.10 % S (including controlled sulphide morphology) or Pb additions may be available on request. In the first case, the upper limit for the Mn content may be increased by 0.15 %.
4) Fe is listed as a Base element for this material, but its % value is not listed in the specification. The value shown is a calculated one.

Mechanical Properties

Tabular Data

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Dimensions	Yield Strength (lbf/ft^2)	Ultimate Tensile Strength (lbf/ft^2)	Elongation (% strain)
Diameter or thickness, ≤ 16 or ≤ 8 mm respectively	≥ 8.35e6	1.25e7 to 1.57e7	≥ 18
Diameter or thickness, > 16 to ≤ 40 or > 8 to ≤ 20 mm respectively	≥ 7.31e6	1.15e7 to 1.46e7	≥ 20
Diameter or thickness, > 40 to ≤ 63 or > 20 to ≤ 35 mm respectively	≥ 6.27e6	1.04e7 to 1.36e7	≥ 21
Diameter or thickness, ≤ 16 or ≤ 8 mm respectively	≥ 8.35e6	1.25e7 to 1.57e7	≥ 18
Diameter or thickness, > 16 to ≤ 40 or > 8 to ≤ 20 mm respectively	≥ 7.31e6	1.15e7 to 1.46e7	≥ 20
Diameter or thickness, > 40 to ≤ 63 or > 20 to ≤ 35 mm respectively	≥ 6.27e6	1.04e7 to 1.36e7	≥ 21