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STS 309STB

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Korea KS STS309STB Stainless steel for boiler and heat exchanger tubes and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: STS309STB / STS 309STB
Category Grade Standard Region/Area Standard Content
Metals STS 309STB KS D 3577 Korea Stainless steel for boiler and heat exchanger tubes

Chemical composition(mass fraction)(wt.%) of the STS 309STB

Element Min Max Similar
Si - 1.0000 -
S - 0.0300 -
P - 0.0400 -
Ni 12.0000 15.0000 -
Mn - 2.0000 -
Cr 22.0000 24.0000 -
C - 0.0800 -

Mechanical Properties of steel grade STS 309STB

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)
786 (≥) 186 (≥) 32 33 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade STS 309STB

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 -  
325 956 - 33.3 213   -  
677 - 23 23.2   423 422

Heat Treatment of steel grade STS 309STB

Heat treated : 1993°C - 1768°C

Technological Curves of steel grade STS 309STB

Cross Reference Table (Equivalent Grade) of STS 309STB

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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