High-strength steel has become more common with the increasing demand for solid and durable materials in various industries. One such steel is Strenx 700 MC, a structural steel that is ideal for designing and engineering various industrial and automotive components. This blog post will look closer at Strenx 700 MC, its composition, mechanical and physical properties, uses, corrosion resistance, heat treatment, machining, and welding.
What is Strenx 700 MC?
Strenx 700 MC is a high-strength structural steel produced by SSAB. It features excellent weldability and formability while providing superior strength, even in cold temperatures. As a result, it’s widely used in demanding applications such as agricultural machinery, engineering constructions and construction equipment. Its ultimate strength of up to 1290 MPa makes it one of the strongest steels on the market.
Strenx 700 MC Composition:
Strenx 700 MC is a high-strength structural steel that is composed of low alloy and carbon. It also contains small amounts of sulfur, phosphorus, niobium, and vanadium. Strenx 700 MC has a chemical composition optimized for low carbon content, contributing to its high toughness, weldability, and high strength.
| C (MAX %) |
SI (MAX %) |
MN (MAX %) |
P (MAX %) |
S (MAX %) |
ALTOT (MIN %) |
NB (MAX %) |
V (MAX %) |
TI (MAX %) |
|---|---|---|---|---|---|---|---|---|
| 0.12 | 0.21 1) | 2.10 | 0.020 | 0.010 | 0.015 | 0.09 2) | 0.20 2) | 0.15 2) |
Strenx 700 MC Mechanical Properties:
With a minimum yield strength of 700 MPa, Strenx 700 MC offers excellent mechanical properties, including high tensile strength, elongation, and toughness. This steel is also highly formable, which makes it ideal for various applications that require complex shapes.
| THICKNESS (mm) |
YIELD STRENGTH REH 1) (MIN MPa) |
TENSILE STRENGTH RM (MPa) |
ELONGATION A80 2) (MIN %) |
ELONGATION A5 3) (MIN %) |
MIN. INNER BENDING RADIUS FOR A 90° BEND 4) |
|---|---|---|---|---|---|
| 2.00 – 3.00 | 700 | 750 – 950 | 10 | 12 | 0.8 x t |
| 3.01 – 6.00 | 700 | 750 – 950 | — | 12 | 1.2 x t |
| 6.01 – 10.00 | 700 | 750 – 950 | — | 12 | 1.6 x t |
Strenx 700 MC Physical Properties:
Strenx 700 MC has a density of 7.85 g/cm3, comparable to other high-strength steels. It also has a thermal conductivity of 44.2 W/mK and a specific heat capacity of 486 J/kgK. This steel’s high strength and low carbon content contribute to its excellent weldability and formability.
Strenx 700 MC Carbon Equivalent CET(CEV)
Strenx 700 MC Thickness
Strenx™ 700 MC is a hot rolled structural steel with a minimum yield strength of 700 MPa intended for use in truck frames and crane booms, as well as other high-strength applications. Its thicknesses range from 2 mm to 100 mm.
Strenx 700 MC Uses:
Strenx 700 MC is ideal for various structural applications that require high strength, durability, and formability. These include crane booms, truck frames, agriculture machinery, mining equipment, and excavator’s arms. This steel is also used in the automotive industry to manufacture chassis components, suspension parts, and roll cages.
Strenx 700 MC Corrosion Resistance:
Strenx 700 MC offers good corrosion resistance thanks to its composition and surface treatment. However, it is still susceptible to corrosion in harsh environments, such as seaside or heavily polluted areas. Strenx 700 MC can be coated with various types of coatings, such as galvanized or paint, to enhance its corrosion resistance.
Strenx 700 MC Heat Treatment:
Strenx 700 MC can be heat-treated to improve its mechanical properties, such as strength and toughness. The heat treatment process involves heating the steel to a specific temperature and then cooling it at a controlled rate. Depending on the desired application, this process can achieve different hardness and strength levels.
Strenx 700 MC Machining:
Strenx 700 MC can be machined by conventional methods, such as drilling, milling, and turning. However, its high strength and hardness require more power and higher cutting forces than mild steel. Machining operations require proper tools and cutting parameters to achieve the desired results.
Strenx 700 MC Welding:
Strenx 700 MC is highly weldable thanks to its low carbon content and optimized chemical composition. This steel can be welded using various methods, such as MIG/MAG, TIG, and SAW. However, since it is a high-strength steel, it requires proper welding procedures and preheat temperatures to avoid cracking and distortion.
Strenx 700 MC Conclusion:
Strenx 700 MC is a high-strength structural steel offering excellent mechanical properties, formability, and weldability. It’s optimized chemical composition and low carbon content make it ideal for various applications that require high strength and durability, such as crane booms, truck frames, mining equipment, and automotive components. It’s good corrosion resistance and heat-treatability further enhance its properties, making it a preferred choice for industrial and engineering applications. Whether designing and engineering structures or making automotive components, Strenx 700 MC is a reliable steel that can meet your requirements for high performance and longevity.
A passionate metal industry expert and blogger. With over 5 years of experience in the field, Palak brings a wealth of knowledge and insight to her writing. Whether discussing the latest trends in the metal industry or sharing tips, she is dedicated to helping others succeed in the metal industry.
