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STS321TF

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STS321TB STS321TPY
#STS321

Description

Korea KS D 3587 (1991), STS321TF Specialsteel Steel tubes for fired heater and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STS321TF
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STS321TF Austenite KS Korea Steel tubes for fired heater

Chemical composition(mass fraction)(wt.%) of the STS321TF

C Si Mn P S Cr Ni Mo N Ti
≤0.08 ≤1.00 ≤2.00 ≤0.045 ≤0.030 17.00 -19.00 9.00 -13.00 ≤ ≥ ≤ ≥ 5×C％ - ≥

Mechanical Properties of steel grade STS321TF

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)
949 (≥) 976 (≥) 41 13 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 314

Physical Properties of steel grade STS321TF

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
44 - -     0.13 -  
414 171 - 13.3 121   -  
712 - 41 31.2   312 412

Heat Treatment of steel grade STS321TF

Heat treated : 1776°C - 1243°C

Technological Curves of steel grade STS321TF

Cross Reference Table (Equivalent Grade) of STS321TF

Grade Standard Country Application
STS321
STS321

Relevant standard of STS321TF

D 3587 (1991) Steel tubes for fired heater D-3587-(1991).pdf
STS321TB STS321TPY
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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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