Shanghai Jieteng Precision Mold Factory

Shanghai Jingteng Metal Group Co., Ltd.

   
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SUM22 Free Cutting Steel

SUM22 Free Cutting Steel

SUM22 Free Cutting Steel
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SUM22 Free Cutting Steel



Material Name


Material Name: SUM22 Free Cutting Steel
Execution standard: JIS G4804-1999

Characteristics and scope of application



It is S-P composite high sulfur, low silicon free cutting steel. Cutting performance was significantly higher than that of Y12, production efficiency increased by 30% to 50% than 15 steel, specially when tapping, the tap life is improved by more than two times than Y12Commonly used in the manufacture of non important standard parts, such as bolts, nuts, pipe joints, spring seat, etc.


Chemical Composition 


C Si Mn S P
0.100.18 Below 0.15 0.80~1.20 0.23~0.33 0.05~0.10

 Mechanical Property


Tensile strength
σb (MPa)
Elongation
δ 5 ()
reduction of crosssection area 
ψ ()
Hardness 
390~540(hot rolled) Above 22(hot rolled) Above7.0(cold drawn) Above 36(hot rolled)
Below 170HB(hot rolled)  152~217HB(cold drawn)


specification of heat treatment and metallurgical structure


Delivery State


hot rolled or cold drawn state of delivery, the delivery state should be indicated in the contract.