Shanghai Jieteng Precision Mold Factory

Shanghai Jingteng Metal Group Co., Ltd.

   
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SUM12

SUM12

SUM12 Free Cutting Steel
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SUM12 Free Cutting Steel



Material Name


Material Name: SUM12
Execution standard: JIS G4804-1999

Characteristics and scope of application


Used to manufacture various parts on the mechanical performance requirements of such as bolt, nut, pin, shaft, pipe fittings and the spark sets.


Chemical Composition


C
 Mn S P
0.08-0.13
 0.60~0.90 0.08-0.13 Max 0.040

Mechanical Property


Tensile strength
σb (MPa)
Elongation
δ 5 (％)
reduction of crosssection area
ψ (％)
Hardness
(HB)
390-540 Min 22 Min 36
 Max 170

Delivery State


Hot rolled steel with heat treatment or heat treatment delivery, cold drawn steel to heat treatment delivery.