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ADVANCED HIGH-STRENGTH STEEL PRODUCTS
FEATURES
U. S. Steel's 980 XG3™ steel is the most advanced of Advanced High Strength Steels (AHSS) in the market today. This is our Generation 3 steel. XG3™ steel delivers high strength and high formability, and adapts to your current processes without compromising weldability. It’s designed specifically to provide automakers with the most cost-effective material to design safer and lighter vehicles.
High Strength and Formability
With the strength of a 980 and the formability of a 590, XG3™ steel sets an entirely new standard for AHSS. XG3™ steel’s high-strength design provides efficient load paths that absorb energy in crash situations. And its next-gen formability reduces the amount of material needed, lowering costs while making it easier to stamp even the most complex parts.
Performance
Make no mistake, 980 XG3™ steel has been put through its paces, achieving high scores in a variety of performance-based tests. From drop-tower crush tests to crashworthiness modeling, strength evolution to residual toughness tests, XG3™ steel surpasses conventional AHSS performance and all expectations.
Weldability
Superior weldability is another plus of XG3™ steel, delivering next-generation strength in production. Weldlobe, resistance spot-weld (RSW) joint-strength and RSW cross-section data prove it.
Minimal Manufacturing Changes
A major benefit of the XG3™ steel is that deployment doesn’t require massive manufacturing changes. XG3™ steel can replace traditional steel designs with drop-in ease and can be cold stamped in traditional mechanical presses. By contrast, press-hardened steel requires additional capital investments for long roller hearth ovens and new hydraulic presses to replace traditional mechanical presses. Aluminum requires complicated scrap-segregating strategies in the press shop, an overhaul of the entire body shop to implement riveted joints and an expansion of the paint shop.
APPLICATIONS
- A Pillar (Outer/Inner)
- B Pillar (Outer/Inner)
- Roof Header
- Rear Rails
- Longitude Members
- Hinge Pillars
TECHNICAL BULLETINS
BENEFITS
Dual Phase (DP) steels are the most widely used of all the advanced high strength steels on the market. Their ferritic–martensitic microstructure allows for both hot- and cold-rolled DP grades to exhibit a good balance of low yield, high tensile strength and good formability, while also being able to absorb large amounts of energy. This combination of characteristics makes DP steels ideal for automotive applications where crashworthiness is a critical factor.
FEATURES
Dual Phase steels by U. S. Steel are available in different strength levels that increase with the percentage of martensite. U. S. Steel offers the following DP steels available as cold-rolled (CR), electrogalvanized (EG), and hot-dipped (HD) materials. HD materials can be ordered with galvanized (free zinc – GI) or galvannealed (iron & zinc alloy – GA) coatings.
DUAL PHASE STEELS
| AVAILABLE VARIANTS |
AVAILABLE VARIANTS |
FORMABILITY CLASSIFICATION |
MINIMUM TENSILE STRENGTH* |
YIELD STRENGTH* | MINIMUM TOTAL ELONGATION (%)* |
SPECIMEN GEOMETRY* |
|---|---|---|---|---|---|---|
| 590 DP | CR, EG | Global | 590 | 305 – 470 | 17 | ASTM-L |
| 590 DP | HDGA, HDGI | Global | 590 | 305 – 470 | 16 | JIS-T |
| 780 DP | CR, EG | Global | 780 | 400 – 645 | 12 | JIS-T |
| 780 DP (low Si) | CR, EG | Global | 780 | 420 – 550 | 14 | ASTM-L |
| 780 DP | HDGA, HDGI | Global | 780 | 400 – 625 | 15 | JIS-T |
| 980 DP | CR | Global | 980 | 580 – 940 | 9 | JIS-T |
| 980 DP (low-C) | CR, EG | Global | 980 | 600 – 750 | 10 | ASTM-L |
| 980 DP | HDGA, HDGI | Global | 980 | 550 – 760 | 8 | JIS-T |
| 980 DP HY | CR, EG | Balanced | 980 | 720 – 930 | 7 | ASTM-L |
| 980 DP HY (low-Si) | Balanced | 980 | 700 – 900 | 8 | ASTM-L | |
| 1180 DP | CR,EG | Global | 1,180 | 825 – 1,225 | 5 | JIS-T |
| 1180 DP | HDGA, HDGI | Global | 1,180 | 800 – 970 | 8 | JIS-T |
*Property ranges provided are guaranteed properties at the center of the strip at room temperature.
FEATURES
With a tensile strength of 980, Multi-Phase 980 (LCE) is a low-carbon equivalent that can be used in applications requiring high strength such as safety parts, structural parts, bumpers and rails.
980 MP (LCE) is one of the Advanced High-Strength Steel (AHSS) products available from our continuous annealing line (CAL) or from our hot-dipped galvanizing (HD) processing lines. These materials are available as cold-rolled (CR) or with electrogalvanized (EG) coating.
APPLICATIONS
- Structural parts and components
- Safety system parts
PRODUCT FORMABILITY AND GUARANTEED PROPERTIES
| PRODUCT | MP 980 (LCE) (MULTI-PHASE, LOW CARBON EQUIVALENT) CAL GRADE |
MP 980 (LCE) (MULTI-PHASE, LOW CARBON EQUIVALENT) HD GRADE |
|---|---|---|
| Formability Classification* | Balanced/Local | Balanced/Local |
| Tensile Strength (MPa)* | 980 – 1,200 | 980 – 1,200 |
| Yield Strength (MPa)* | 700 – 900 | 700 – 900 |
| Total Elongation % | ≥ 8 | ≥ 8 |
| Specimen Geometry* | ASTM-L | ASTM-L |
* Property ranges provided are guaranteed properties at the center of the strip at room temperature.
FEATURES
Because of their high energy absorption capacity, TRIP steels from U. S. Steel are well suited for automotive structural and safety part applications. These grades are available from our Continuous Annealing Line (CAL) or from our hot-dipped galvanizing (HD) processing lines. These materials are available as cold-rolled (CR) or with electrogalvanized (EG) coating.
PRODUCT FORMABILITY AND GUARANTEED PROPERTIES
| PRODUCT | 780 TRIP CR, EG | 780 TRIP HD |
|---|---|---|
| Formability Classification* | Global | Global |
| Tensile Strength (MPa)* | 780 (min.) | 780 (min.) |
| Yield Strength (MPa)* | 420 – 560 | 400 - 570 |
| Total Elongation % | ≥ 24 | ≥ 19 |
| Specimen Geometry* | ASTM-L | JIS-T |
* Property ranges provided are guaranteed properties at the center of the strip at room temperature.
FEATURES
Improved Bending and Flanging 780 and 980 steel grades provide the necessary properties for most automotive applications. These Advanced High-Strength Steel (AHSS) grades are available from our continuous annealing line (CAL) or from our hot dip (HD) processing lines. CAL grades are available bare or with electrogalvanized (EG) coating.
PRODUCT FORMABILITY AND GUARANTEED PROPERTIES
| PRODUCT | IBF 980 CR | IBF 980 HD |
|---|---|---|
| Formability Classification* | Balanced/Global | Balanced/Global |
| Tensile Strength (MPa)* | 1,010 (min) | 980 (min) |
| Yield Strength (MPa)* | 625 | (550 - 750) |
| Total Elongation (%)* | 14 | ≥10 |
| Specimen Geometry* | ASTM-L | ASTM-L |
* Property ranges provided are guaranteed properties at the center of the strip at room temperature.