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Home Material GB /T 8731-2008
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Grade Y15Pb
China ISC U72152
Corresponding Standard GB /T 8731-2008
Free-Cutting Structural Steel
Classification Carbon Steel
Properties Machinability
Y15Pb Chemical Element Composition Content (%)
Component C Si Mn P S Pb
Minimum Value 0.1 - 0.8 0.05 0.23 0.15
Maximum Value 0.18 0.15 1.2 0.1 0.33 0.35
Y15Pb Mechanical Properties
diameter
d
mm		 Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
% 		Hardness
HBW
d=20 (Sample Diameter) Hot Rolled Delivery Condition 390~540 ≥22 ≥36 ≤170
d = 8~20 (steel size) Cold Drawn State Delivery 530~755 ≥7 152~217
d > 20 ~ 30 (steel size) Cold Drawn State Delivery 510~735 ≥7 152~217
d > 30 (steel size) Cold Drawn State Delivery 490~685 ≥7 152~217
Approximate Comparison Table
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Sweden
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF SS14
Y15Pb U72152 SUM22L SUM22L SUM22L 12L13 G12134 11SMnPb28 9SMnPb28 1.0718 S250Pb 1914

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!