Material Name:
of alloy structural steel grades: LF10MnSiTi
Features and Scope:
is a new type of fastener steel - micro-alloying low-carbon manganese titanium non-quenched and tempered steel, the use of micro-alloy elements of the fine grain strengthening, precipitation strengthening and hardening technology to meet the robust performance of the grade bolts. High strength world pie network information , high toughness, good cold formability and high work hardening effect. Used for a variety of industries such as automobiles World Steel Pipe News , tractors strength bolts.
● Chemical Composition:
carbon C: 0.06 to 0.12
silicon Si: 0.50 ~ 0.80
Mn Mn: 1.40 ~ 1.70
sulfur S: ≤ 0.030
phosphorus P: ≤ 0.030
titanium Ti: 0.06 to 0.12
● Mechanical Properties:
tensile strength σb (MPa): the 861
yield strength σs (MPa): 797
the elongation δ5 (%): 13
section shrinkage rate of ψ (%): 61
impact toughness the value αku (J/cm2): the 155
hardness: 23.5HRC
sample size: a test the material
● heat treatment specification and microstructure:
heat treatment specification: Rolled Cold Drawn, 400 ° C aging treatment 60min.
Microstructure: pearlite + ferrite.