High-Strength Low-Alloy Steel Grade Table


High-strength low-alloy
structural steel		 High-strength low-alloy structural steel
Q345A Cr50 SPFC590 E335 S345GWH E335 E355C
GrB.C.D.AA808M E335 HS355C
Q345B Cr50 SPFC590 S355JR S355JR S355JR E355CC
HS355C
Q345D Gr50 SPFC590 S355JR SE55JR S355JR E355CC
GrC.D.GrA
TYPe7
Q390A -- STKT540 -- -- -- E390CC
Q390B
Q390C -- STKT540 -- -- -- E390DD
Q390E HS390
Q420A Gr60 -- -- -- -- E420CC
GrE HS420D
GrB  
Q460C Gr65(450) SM570 S460NL S460NL S460NL E460CC
Q460E SMA570W S460ML S460ML S460ML E460DD
  SMA570P       HS460D
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Buyer FAQ

This reference page lists high-strength low-alloy structural steel grade equivalents across several international standards.

What does this steel table compare?

It compares high-strength low-alloy structural steel grades across Chinese, Japanese, German, U.S., British, and ISO standards.

Is this table a substitute for engineering review?

No. Use it as a sourcing reference and confirm grade, standard, certificate, and mechanical properties before production.

What should buyers include with steel grade requests?

Send the required standard, grade, dimensions, heat treatment, certificate needs, quantity, and application details.