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STS309STB

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STS309STPY STS310S
#STS309S

Description

Korea KS D 3577 (2007), STS309STB Specialsteel Stainless steel for boiler and heat exchanger tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STS309STB
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STS309STB Austenite KS Korea Stainless steel for boiler and heat exchanger tubes

Chemical composition(mass fraction)(wt.%) of the STS309STB

C Si Mn P S Cr Ni Mo N
≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.030 22.00 -24.00 12.00 -15.00 ≤ ≥ ≤ ≥

Mechanical Properties of steel grade STS309STB

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)
661 (≥) 678 (≥) 22 12 12 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade STS309STB

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
32 - -     0.41 -  
344 665 - 32.3 221   -  
517 - 32 33.2   224 423

Heat Treatment of steel grade STS309STB

Heat treated : 1274°C - 1834°C

Technological Curves of steel grade STS309STB

Relevant standard of STS309STB

D 3577 (2007) Stainless steel for boiler and heat exchanger tubes D-3577-(2007).pdf
STS309STPY STS310S
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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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