Grade Y100Pb
Corresponding Standard QB /T 2272-2007
Y100pb Free-Cutting High-Carbon Steel Bars for Watches
Classification Carbon Steel
Properties Good Machinability
Y100Pb Chemical Element Composition Content (%)
Component C Si Mn P S Pb
Minimum Value 0.95 - 0.35 - 0.04 0.15
Maximum Value 1.04 0.3 0.65 0.03 0.08 0.3
Y100Pb Mechanical Properties
diameter
d
mm
Tensile Strength
σb
Mpa
Elongation or Extension Rate
δ
%
Hardness
HBW
0.8~1 ≥930 ≥3 HV ≥290
>1~3 ≥850 ≥6 HV ≥280
>3~4 ≥730 ≥9 HV ≥260
>4~6 ≥660 ≥14 HV ≥250
>6~10 ≥590 ≥16 HV ≥240

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