Y45Mn - GB /T 8731-2008

Grade	Y45Mn
Corresponding Standard	GB /T 8731-2008 Free-Cutting Structural Steel
Classification	Carbon Steel
Properties	Good Machinability

Y45Mn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S
Minimum Value	0.4	-	1.35	-	0.16
Maximum Value	0.48	0.4	1.65	0.04	0.24

Y45Mn Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW
d=20 (Sample Diameter)	Hot Rolled Delivery Condition	610~900	≥12	≥20	≤241
d = 8~20 (steel size)	Cold Drawn State Delivery	695~980	≥6		196~255
d > 20 ~ 30 (steel size)	Cold Drawn State Delivery	655~880	≥6		196~255
d > 30 (steel size)	Cold Drawn State Delivery	580~880	≥6		196~255

Y45Mn Corresponding Standards(Same grade name, different standards)

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