|
High Strength Low Alloy (HSLA) Steel
High strength low alloy steel (HSLA) grades
have a good combination of formability and weldability.
Successfully forming a complex part with HSLA can be difficult,
but is possible with a well thought-out design. This grade will provide mass reduction in most automotive
applications.
The strength of HSLA steels is achieved by the
addition of small quantities of alloying elements.
-
Weldability – Good welding characteristics.
-
Fatigue Performance – High strength steels have good resistance to fatigue due to their relatively high yield strengths.
-
Therefore, HSLA is a good candidate for durability sensitive components.
Denting – Good dent resistance capabilities. For additional capabilities please check our Dent Resistant
Steels.
-
Applications - HSLA materials are typically found on structural parts of the vehicle. Most HSLA materials have very limited formability characteristics. The materials are found on rocker inners, b/c pillar reinforcements, and
cross members.
Typical Properties for HSLA 280MPa:
|
Product
|
Yield
Strength
[MPa]
|
Tensile
Strength
[MPa]
|
Elongation
[%]
|
n-value
|
True
Stress/Strain Curve
|
|
Hot Roll
|
310
|
380
|
28
|
N/A
|
N/A
|
|
Cold Roll
|
303
|
372
|
26
|
N/A
|
N/A
|
|
HDGI
|
300
|
384
|
36.5
|
0.195
|
view
|
Typical Properties for HSLA 340MPa
:
|
Product
|
Yield
Strength
[MPa]
|
Tensile
Strength
[MPa]
|
Elongation
[%]
|
n-value
|
True
Stress/Strain Curve
|
|
Hot Roll
|
380
|
450
|
25.6
|
N/A
|
N/A
|
|
Cold Roll
|
370
|
445
|
26.7
|
0.155
|
view
|
|
HDGI
|
378
|
458
|
30.0
|
0.170
|
view
|
|
HDGA
|
378
|
458
|
30.0
|
0.170
|
N/A
|
Typical Properties for HSLA 410MPa:
|
Product
|
Yield
Strength
[MPa]
|
Tensile
Strength
[MPa]
|
Elongation
[%]
|
n-value
|
True
Stress/Strain Curve
|
|
Hot Roll
|
462
|
558
|
26
|
N/A
|
N/A
|
|
HDGI
|
420
|
500
|
27
|
0.15
|
N/A
|
|
