27SiMn A10272 - GB /T 11251-2020

Grade	27SiMn
China ISC	A10272
Corresponding Standard	GB /T 11251-2020 Alloy Structural Steel Plate and Strip
Classification	Alloy Steel
Properties	High Strength High Hardness Good Forgability Good Machinability Good Weldability High Hardenability

27SiMn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.24	1.1	1.1	-	-	-	-	-	-
Maximum Value	0.32	1.4	1.4	0.03	0.03	0.3	0.3	0.3	0.1

• The composition shall comply with the provisions of GB/T 3077-2015

27SiMn Mechanical Properties

Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
Annealing	550~800	≥18	≥39

• The surface Brinell hardness of steel plates delivered in a high-temperature tempered state shall comply with the provisions of GB/T 3077-2015

27SiMn 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"!