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STR661

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STR660 STR446
#STR661

Description

Korea KS STR661 KS standard austenitic heat resistant steel and STR661 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: STR661
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy STR661 KS Korea KS standard austenitic heat resistant steel
STS430TKC
STR31
STR35
STR36
STR37
STR38
STR309
STR310
STR330
STR660

Chemical composition(mass fraction)(wt.%) of the STR661

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Mo(％) W(%) Co(%) Nb(%)
Max 0.15 Max 1.00 Max 2.00 Max 0.2 Max 0.15 17.0-19.0 8.00-10.00 Max 0.60 2.00-3.00 18.5-21.0 0.75-1.25

Mechanical Properties of steel grade STR661

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
796 (≥) 597 (≥) 31 32 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 112

Physical Properties of steel grade STR661

Temperature
(°C)		 Modulus of elasticity
(GPa)		 Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)		 Specific thermal capacity
(J/kg·°C)		 Specific electrical resistivity
(Ω mm²/m)		 Density
(kg/dm³)		 Poisson’s coefficient, ν
33 - -     0.44 -  
994 942 - 41.3 214   -  
148 - 31 13.2   342 233

Heat Treatment of steel grade STR661

Heat treated : 1262°C - 1761°C

Technological Curves of steel grade STR661

Cross Reference Table (Equivalent Grade) of STR661

Grade Standard Country Application
STR661 KS Korea KS standard austenitic heat resistant steel
STR660 STR446
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Jiangyou Longhai Special Steel Co.,Ltd.
Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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