The global steel industry has undergone a fundamental paradigm shift over the last decade, moving from a volume-oriented production model toward the development of high-value-added products with engineered mechanical properties. Mobarakeh Steel Company (MSC), as the largest steel producer in the Middle East and North Africa (MENA) region, has aligned its research and development strategy with this global trend, focusing on the design and production of Advanced High-Strength Steels (AHSS) and specialized grades. This technical report analyzes MSC’s new product portfolio, examining metallurgical specifications, performance advantages in downstream industries, and the positioning of these products compared to international benchmarks. The primary focus of this development is to meet the stringent requirements of the automotive, energy, and maritime industries, prioritizing structural weight reduction, enhanced safety, and environmental sustainability.

At the forefront of MSC’s product innovations is the development of AHSS for the automotive industry—a direct response to global mandates for reducing emissions and increasing passenger safety. Research indicates that steel accounts for approximately 54% of a vehicle’s average weight. Utilizing modern steel grades can significantly reduce body weight while maintaining or even increasing structural strength. In this regard, MSC has transitioned from traditional mild steels to the industrial-scale production of Dual-Phase (DP) and Ferritic-Bainitic (FB) steels. Dual-Phase steels, consisting of a soft ferritic matrix containing hard martensite islands, offer a unique combination of strength and ductility. The ferritic matrix ensures energy absorption and formability, while the martensite phase dramatically increases tensile strength. The development of grades such as DP600 and DP780, and the move toward DP1000, allows automotive designers to reduce the thickness of sheets used in safety components and pillars without compromising crash resistance. This precision engineering aligns perfectly with global trends where the volume fraction of the martensite phase is increased to achieve higher strengths.
A notable technical achievement in the automotive portfolio is the production of Ferritic-Bainitic steels like FB60 and FB45, localized according to strict European standards (such as PSA). The microstructure of these steels, which includes a bainite phase in a ferrite matrix, provides exceptionally high fatigue resistance under dynamic and alternating loads. This characteristic makes FB60 an ideal choice for suspension systems, chassis components, and control arms that are constantly exposed to cyclic stresses. Furthermore, edge stretchability in these grades is enhanced, which is critical for complex forming processes. Alongside these, Bake Hardening (BH) steels like HX180BD have been developed. These steels undergo a metallurgical mechanism where their yield strength increases during the paint-baking process after the pressing stage. This ensures that outer body panels exhibit excellent formability during production while maintaining high dent resistance in the final vehicle.

In the realm of wheels and motion systems, the design of specialized TP-Ring and SAPH440-G grades demonstrates the company’s metallurgical capability in controlling micro-alloying elements and thermo-mechanical rolling parameters. The TP-Ring grade, designed for heavy vehicle rims, requires a yield strength higher than 440 MPa in thicknesses exceeding 14 mm. The primary challenge is achieving homogeneous mechanical properties in high thicknesses and ensuring resistance to fatigue caused by dynamic road loads. The production process involves precise control of rolling temperatures and cooling rates to achieve a microstructure suitable for flow-forming and welding operations. Success in producing these grades has eliminated the need for imports in the transportation supply chain and guaranteed production sustainability.
Beyond the automotive sector, MSC has made significant strides in meeting the strategic needs of the oil, gas, and energy transition industries. The production of API X60, X65, and X70 grades, particularly for Sour Service environments, is considered one of the most complex steel manufacturing processes. Achieving high resistance to Hydrogen-Induced Cracking (HIC) and Sulfide Stress Corrosion Cracking (SSCC) requires precise impurity control and vacuum degassing technology. These sheets are used in oil and gas pipelines and national water transfer projects, where mechanical properties like Charpy impact tests at low temperatures and Drop Weight Tear Tests (DWTT) are mandatory. Additionally, the production of 34CrMo4 for high-pressure CNG tanks has been successfully operationalized, requiring precise chemical analysis to achieve optimal hardenability and resistance to explosive pressures.

In the maritime and shipbuilding sectors, the production of EH40 grade according to ASTM A131 marks a milestone in MSC’s Thermo-Mechanical Controlled Processing (TMCP) capabilities. This steel grade must withstand minimum impact energy at minus 40 degrees Celsius, requiring a very fine-grained and homogeneous microstructure. Achieving these properties solely through precise rolling and cooling parameters, without separate normalization heat treatment, showcases MSC’s high-level process technology. This product, used in ship hulls and offshore platforms, offers a yield strength exceeding 390 MPa and ensures the safety of maritime structures in cold waters and stormy conditions.

Furthermore, the development of micro-alloyed and heat-treatable steels constitutes a vital part of the new product basket. Boron-added steels like 30MnB5, designed for agricultural applications, utilize boron to drastically increase hardenability, enhancing wear resistance up to three times. Similarly, the CK series and chrome-molybdenum alloy steels (42CrMo4) have been developed for sensitive engineering components like shafts and gears, offering excellent machinability and response to quenching and tempering.
In a comparative analysis with global leaders like ArcelorMittal, MSC’s product portfolio shows significant convergence in high-demand and strategic grades. Comparative radar charts indicate a complete overlap in structural steels (S355, S550), micro-alloyed steels (HSLA), and Dual-Phase steels (DP600). While global competitors may have more variety in ultra-heavy grades (like S960MC), MSC has covered the majority of domestic and regional technical needs by focusing on the localization of key grades like S500MC and automotive galvanized grades.

Another dimension of innovation is the production of Double Reduced (DR) tinplates with extremely low thickness and high strength. The DR-9 grade allows for the reduction of sheet thickness in cans and packaging. This “lightweighting” leads to raw material savings, reduced energy consumption, and lower logistics costs and environmental impact. Producing this in thicknesses less than 0.18 mm requires ultra-precise rolling technology and exceptional surface quality control. Moving forward, with the completion of the Hot Rolling Mill No. 2, MSC’s product range will expand toward third-generation ultra-high-strength steels and wide-body plates, minimizing the technological gap with global rivals and creating new export capacities for high-value-added products.