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NBNA21201 A 490

NBNA21201 A 490-1,2 steel plate/sheet, NBNA21201 A 490-1,2 steel plate/sheet, under NBNA21201 standard, we can regard A 490-1,2 steel plate/sheet for general Construction steels. NBNA21201 A 490-1,2 steel plate/sheet is for general Construction steels. The followings are the chemical composition and the mechanical properties of NBNA21201 A 490-1,2 steel.
Equivalent grade :
A 490-1,2 steel plate/sheet is in NBNA21201 standard. The comparison of steel grades is: NBNA21201:1990 A 490-1,2,DIN17100 ST50-2, NFA 35-501 A50-2,BS1449,UNI7070 FE 490.


A 490-1,2
DIN NBNA21201-2 Number: 1.0050

Comparison of steel grades

NBNA21201 :1990

A 490-1,2

DIN17100

ST50-2

NFA 35-501

A50-2

BS1449

-

UNI7070

FE 490

A 490-1,2 steel Chemical analysis -% by mass*
Main chemical composition in NBNA21201 A 490-1,2 steel : Phosphorus max 0.045, Silicon max 0.045,please refer to the flowing table:

Chemical elements

C≤ 16mm
max

C>16mm
max

Si
max

Mn
max

P
max.

S
max.

N
max

%,by mass

-

-

-

-

0.045

0.045

0.012

A 490-1,2 steel Mechanical properties
NBNA21201 A 490-1,2 is general Construction steels, The different thickness with different yield strength, tensile strength and fracture elongation. More detailed information about NBNA21201 A 490-1,2 steel Mechanical Properties , please refer to the following table:

thickness

Yield Strength ReH [N/mm2]
transv.min.

Tensile Strength Rm [N/mm2] transv.

Fracture Elongation[%]transv. min.

Notch Impact
Energy1)Ch Vcomplete samplelongitud. min [J]

t≤ 16mm
t >16mm

295
285

-
-

t < 3mm
t ≥ 3mm

490-600
470-610

Up to 1.5mm
1.51-2.00mm
2.01-2.50mm
2.51-2.99mm
≥ 3mm

11
12
13
14
18

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