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STR309

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STR38 STR310
#STR309

Description

Korea KS STR309 KS standard austenitic heat resistant steel and STR309 Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Special Alloy: STR309
Category Type Steel Grade Standard Country Application
Steel GradesSpecial Alloy STR309 KS Korea KS standard austenitic heat resistant steel
STS410TKC
STS420J1TKA
STS420J2TKA
STS430TKA
STS430TKC
STR31
STR35
STR36
STR37
STR38

Chemical composition(mass fraction)(wt.%) of the STR309

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％)
Max 0.20 Max 1.00 Max 2.00 Max 0.040 Max 0.030 22.0-24.0 12.0-15.0

Mechanical Properties of steel grade STR309

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)
536 (≥) 659 (≥) 21 23 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 222

Physical Properties of steel grade STR309

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
21 - -     0.11 -  
256 963 - 14.3 422   -  
432 - 31 32.2   334 421

Heat Treatment of steel grade STR309

Heat treated : 1859°C - 1164°C

Technological Curves of steel grade STR309

Cross Reference Table (Equivalent Grade) of STR309

Grade Standard Country Application
STR309 KS Korea KS standard austenitic heat resistant steel
STR38 STR310
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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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