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Mechanical properties
Standard Steel Mechanical Properties
GBK (+A) NBK (+N)
T.S. E T.S.  Y.S. E
Rm   A5  Rm   Reh    A5
mpa  %   mpa  mpa  %
         DIN2391             ST35 ≥315 ≥25 346-478 ≥235 ≥25
ST37 ≥315 ≥25 346-478 ≥235 ≥25
ST37.4 ≥315 ≥25 346-478 ≥235 ≥25
ST45 ≥390 ≥21 440-570 ≥255 ≥21
ST44 ≥390 ≥21 440-570 ≥255 ≥21
ST52 ≥490 ≥22 490-630 ≥355 ≥22
EN 10305   E235 ≥315 ≥25 340-480 ≥235 ≥25
E255 ≥390 ≥21 440-570 ≥255 ≥21
E355 ≥450 ≥22 490-630 ≥355 ≥22
GB/T3639 10# ≥335 ≥24 ≥335 ≥205 ≥24
20# ≥390 ≥20 ≥410 ≥245 ≥20
Q345 -- -- 490-655 ≥325 ≥21

Remarks: only the characteristic values after heat treatment of GBK (+A), NBK (+N) was showed at here,
for the information of cold-drawn BK (+C), or cold-drawn soft BKW (+LC), BKS (+SR') states, please contact us.

"T.S." is Tensile strength, "Y.S." is Yield strength, "E" is Elongation.
     Application
Automotive assembly
Hydraulic systems
Galvanized tube used in construction vehicle
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