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High-Strength Low-Alloy (HSLA) Steels
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.
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Weldability – Good welding characteristics.
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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.
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Denting – Good dent resistance capabilities. For additional capabilities, please check our dent-resistant
steels.
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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 |
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 |
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