3 Reasons to Choose Baowu BS700MCK2 High-Strength Steel for Your Projects
Unmatched Strength & Toughness for Demanding Environments
BS700MCK2 is Baowu Steel Group’s flagship high-strength structural steel, engineered for critical applications where reliability is non-negotiable. Its exceptional properties include:
1) 700MPa Minimum Yield Strength – With tensile strength ≥750MPa, it significantly outperforms conventional structural steels, enabling lighter designs without compromising safety
2) Superior Formability & Weldability – Low carbon content (C≤0.12%) and micro-alloying (Nb/V/Ti≤0.22%) enable seamless cold forming and crack-free welding without preheating
3) -20°C Impact Toughness (K2 Grade) – Delivers ≥40J impact energy at -20°C, ensuring structural integrity in freezing climates or cryogenic applications
Why It Matters: Replace thicker conventional steel with BS700MCK2 to reduce weight by 15–30% while maintaining or enhancing load capacity – ideal for mobile equipment and dynamic structures
Equivalent Grades of BS 700MC K2/K4
| BAOSTEEL | SSAB | EN | DIN | AFNOR |
|---|---|---|---|---|
| BS600MCK2 | STRENX® 600MC D | S600MC | QStE 600TM | E620D |
| BS600MCJ4 | STRENX® 600MC E | - | - | - |
| BS600MCK4 | - | - | - | - |
Certified Quality from China’s Steel Leader
BS700MCK2 adheres to Baowu’s stringent enterprise standard Q/BQB 316-2014, guaranteeing traceability and consistency:
1) Advanced TMCP Process – Controlled rolling and cooling technology refines the microstructure (ferrite + acicular ferrite) for uniform strength and toughness
2) Rigorous Quality Control – Oxygen-converter smelting, ladle refining, and automated slab inspection ensure near-zero defects (e.g., segregation, inclusions)
3) Full Compliance Documentation – Mill test certificates validate chemical composition, mechanical properties, and impact test results for every batch
Industry Trust: Trusted by Caterpillar, XCMG, SANY, and other global OEMs for mining shovels, crane booms, and military vehicle frames
Mechanical Properties of BS 700MC
| Grade | Yield Strength MPa | Tensile Strength MPa | Elongation % | Bending Test | Impact Strength Charpy V |
|---|---|---|---|---|---|
| BS700MC | ≥700 | 750–950 | ≥15 | 180°, D=2a | – |
| BS700MCK2 | ≥700 | 750–950 | ≥15 | 180°, D=2a | 40J / -20°C |
| BS700MCJ4 | ≥700 | 750–950 | ≥15 | 180°, D=2a | 27J / -40°C |
| BS700MCK4 | ≥700 | 750–950 | ≥15 | 180°, D=2a | 40J / -40°C |
Chemical Composition of BS 700MC
| Grade | C | Si | Mn | P | S | Al | Nb | V | Ti | Mo |
|---|---|---|---|---|---|---|---|---|---|---|
| BS600MC, BS600MCK2, BS600MCJ4, BS600MCK4 | 0.12 | 0.5 | 1.9 | 0.02 | 0.01 | 0.015 | 0.09 | 0.2 | 0.22 | 0.5 |
| BS650MC, BS650MCK2, BS650MCJ4, BS650MCK4 | 0.12 | 0.5 | 2 | 0.02 | 0.01 | 0.015 | 0.09 | 0.2 | 0.22 | 0.5 |
| BS700MC, BS700MCK2, BS700MCJ4, BS700MCK4 | 0.12 | 0.5 | 2.1 | 0.025 | 0.01 | 0.015 | 0.09 | 0.2 | 0.22 | 0.5 |
Rapid Supply & Cost Efficiency
Leverage Baowu’s production scale and distributor networks for agile, budget-friendly procurement:
1) Immediate Availability – Wide thickness range (3–12mm) and standard widths (850–1,600mm) in stock for fast processing
2) Competitive Pricing – Direct mill partnerships enable ¥7,450–¥7,800/ton pricing (below imported equivalents), with volume discounts
3) Logistics Optimized – Domestic and international shipping support (FOB/CIF), with HS Code 7225.40 for streamlined customs clearance
Case Example: A mining equipment manufacturer cut lead times by 40% and material costs by 18% by switching to BS700MCK2 from European equivalents.
Inspection Certificate

Key Applications
BS700MCK2 excels in high-stress, weight-sensitive components:
Engineering Machinery: Excavator arms, crane booms, concrete pump frames
Mining & Logistics: Dump truck chassis, conveyor systems, port cranes
Transportation: Trailer beams, military vehicle structures
Energy Infrastructure: Wind turbine towers, hydraulic support frames
Fabrication and Delivery Conditions
For these aspects, they depend on your specific requirements. Please contact us and we will provide you with professional advice and services.








