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Grade Availability
Mittal Steel USA's IN-TRIP™ family of TRIP steels are currently under development. Products currently being evaluated are shown in the table below.
| Tensile Strength |
Hot Rolled |
Cold Rolled |
| Uncoated |
Uncoated |
EG |
HDGI |
HDGA |
| 590 MPa |
- |
DEV
IN-TRIP™ T590 |
- |
- |
DEV
IN-TRIP™ T590 |
| 780 MPa |
- |
- |
- |
- |
DEV
IN-TRIP™ T780 |
EG: Electrogalvanized
HDGI: Hot-Dip-Galvanized
HDGA: Hot-Dip-Galvannealed |
'DEV' products are under development or in limited production.
Please inquire about the status and availability of these products. |
Product Characteristics
TRIP (TRansformation Induced Plasticity) steels are one of the newest family of advanced high strength steels (AHSS) developed for the automotive industry. The steels have a microstructure of soft ferrite grains with bainite and retained austenite. The retained austenite transforms into martensite (a hard phase) during deformation (like stamping or crash event) stage. The hard martensite delays the onset of necking resulting in a product with high total elongation, excellent formability and high crash energy absorption. In addition, TRIP steels also exhibit extremely high fatigue endurance limit, thereby providing excellent durability performance.
TRIP steels can therefore be engineered or tailored to provide excellent formability for manufacturing complex parts. In addition, these steels can be designed into the automotive body structure to provide excellent crash energy absorption.
Typical TRIP Steel Microstructure
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