Korea KS D 3731 (2002) STR616 Heat - resisting steel bars and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel STR616 Martensite KS Korea Heat - resisting steel bars
Datasheet for:Steel Grades:Specialsteel:STR616

Chemical composition(mass fraction)(wt.%) of the STR616

Elements Min.(≥) Max.(≤)
C 0.20 0.25
Si - 0.50
Mn 0.50 1.00
P - 0.04
S - 0.03
Cr 11.00 13.00
Ni 0.50 1.00
Mo 0.75 1.25
N - -
Cu - 0.30
W 0.75 1.25
V 0.20 0.30

Mechanical properties / Mechanische Eigenschaften / Caracteristiques mecaniques of grade STR616

Rp0.2 (MPa)
Rm (MPa)
KV/Ku (J)
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
159 (≥) 915 (≥) 21 34 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 413
Modulus of elasticity
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
Specific thermal capacity
Specific electrical resistivity
(Ω mm²/m)
Poisson’s coefficient, ν
34 - -     0.14 -  
732 367 - 31.3 343   -  
487 - 21 14.2   224 134
Heat treated : 1251°C - 1655°C
The material does not have direct Metallography properties.
Directory is being updated.
The material does not have direct Metallography properties.
Directory is being updated.
Cross Reference Table(Equivalent Grade)
Grade Standard Country Application
STR616 KS Korea
Heat - resisting steel bars
Relevant standard
Standard No. Description Download
D 3731 (2002) Heat - resisting steel bars
Contact Suppliers with your enquiries for STR616 any of the shape and size.

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Stainless Steel, Special Steel, Compressor Blading, Turbine Blading, Superalloy Supplier.
D 3731 (2002), STR616 can be supplied as steel plate/ sheet, round steel bar, steel tube/pipe, steel stripe, steel billet, steel ingot, steel wire rods. electroslag, forged ring/ block,etc.
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Round, Square, Hex, Flat, Hollow

STR616 Bar


Shaft, Ring, Disks, Cylinder

STR616 Forged


Special shaped profile steel

STR616 Steel


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STR616 Parts

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