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STS321HTB

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STS321TKA STS321HTF
#STS321

Description

Korea KS D 3577 (2007), STS321HTB Specialsteel Stainless steel for boiler and heat exchanger tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: STS321HTB
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STS321HTB Austenite KS Korea Stainless steel for boiler and heat exchanger tubes

Chemical composition(mass fraction)(wt.%) of the STS321HTB

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 STS321HTB

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)
626 (≥) 368 (≥) 31 22 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 143

Physical Properties of steel grade STS321HTB

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
42 - -     0.22 -  
145 177 - 23.3 421   -  
429 - 21 42.2   332 331

Heat Treatment of steel grade STS321HTB

Heat treated : 1388°C - 1438°C

Technological Curves of steel grade STS321HTB

Cross Reference Table (Equivalent Grade) of STS321HTB

Grade Standard Country Application
STS321
STS321

Relevant standard of STS321HTB

D 3577 (2007) Stainless steel for boiler and heat exchanger tubes D-3577-(2007).pdf
STS321TKA STS321HTF
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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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