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Our 4140 alloy structural steel, including 1.7225 steel, SCM440 steel, and 42CrMo4 steel, is a highly versatile material. It is a premium chromium-molybdenum structural alloy. Many professionals commonly refer to it as chromoly steel. This medium-carbon material responds exceptionally well to industrial heat treatment. It allows structural components to reach high hardness levels while maintaining excellent ductility. The specific addition of chromium and molybdenum significantly enhances its atmospheric corrosion resistance. It also provides superior fatigue strength compared to standard carbon alternatives.
Production Route: | EAF+LF+VD ,Forged or Hot Rolled |
Heat Treatment: | Quenched+ Tempered or Annealed |
Hardness: | or acc. to customer requirement |
UT Standards: | Sep 1921 Class3 D/d |
Surface Condition: | Black surface or machined |
Size Range: | |||
Flat | Round | ||
Forged | Thickness: | 150-650mm | Φ200-700mm |
Width: | 400-1600mm | ||
Rolled | Thickness: | 12-200mm | Φ12-250mm |
Width: | 150-2300mm | ||
Chemical Composition | C | Si | Mn | Cr | Mo | P | S | Ni | Cu |
4140 | 0.38~0.43 | 0.15~0.35 | 0.75~1.00 | 0.90~1.20 | 0.15~0.30 | ≤0.035 | ≤0.035 | ||
1.7225 | 0.38~0.45 | ≤0.40 | 0.60~0.90 | 0.90~1.20 | 0.15~0.30 | ≤0.025 | ≤0.035 | ||
42CrMo4 | 0.38~0.45 | ≤0.40 | 0.60~0.90 | 0.90~1.20 | 0.15~0.30 | ≤0.03 | ≤0.035 | ||
SCM440 | 0.38~0.43 | 0.15~0.30 | 0.60~0.90 | 0.90~1.20 | 0.15~0.30 | ≤0.03 | ≤0.03 | ≤0.25 | ≤0.30 |
When sourcing industrial materials, achieving the right balance between strength and toughness is critical. Our 42CrMo4 steel delivers a superior strength-to-weight ratio. It thrives in demanding operational environments. The material handles extreme loading conditions where component failure is simply unacceptable. By undergoing precise quenching and tempering processes, the steel achieves remarkable structural durability. This makes our material the preferred choice for heavy-duty applications. It guarantees long-lasting reliability and performance.
We provide versatile surface conditions to meet diverse industrial requirements. These options include black, turned, milled, peeled, and precision ground finishes. Our SCM440 steel offers excellent machinability when supplied in the annealed state. The high-quality EAF, LF, and VD production route ensures a clean microstructure. This refined internal structure facilitates smoother machining processes for your facility. It effectively reduces tooling wear over time. It ultimately improves the overall production efficiency for your custom components.
Due to its robust fatigue resistance, our 1.7225 steel is a staple in the automotive sector. It is also widely used for heavy industrial machinery. Typical uses include critical drivetrain components like crankshafts and steering knuckles. It is perfect for manufacturing high-tensile structural bolts. For industrial equipment, it performs exceptionally well in precision gears and spindles. It is equally reliable for rotating shafts and conveyor parts. Our specialized steel ensures reliable operation under continuous dynamic loading.
The oil and gas industry requires extremely durable tooling materials. These materials must withstand harsh, high-pressure environments without sudden degradation. Our alloy steel is extensively utilized for manufacturing robust drill collars. It is also ideal for specialized tool holders and various downhole exploration equipment. The outstanding atmospheric corrosion resistance ensures an extended service life in challenging fields. We supply customized sizes and precision-ground options. This supports specialized tooling projects and complex component fabrication demands.
Operating a massive 1.6 million square meter forging facility, we integrate a complete industrial production chain. We utilize advanced 40-ton EBT furnaces and powerful forging presses up to 5000 tons. We also operate multiple modern ESR furnaces. This comprehensive setup allows us to strictly control material quality and production costs. We maintain an impressive annual production capacity of 100,000 tons. This guarantees a highly stable and continuous supply chain for our global partners.
To meet urgent project demands, our warehouses maintain over 3,000 tons of regular stock. This extensive inventory covers various essential tool and mold steels. We operate an independent laboratory fully equipped for precise chemical analysis and mechanical testing. We perform comprehensive UT inspections according to Sep 1921 Class 3 standards. Our dedicated engineering team performs rigorous pre-shipment inspections. This guarantees strict compliance with international material specifications. We can also provide free material samples for your initial evaluation.
We produce materials according to major international specifications. These include GB, DIN, ASTM/AISI, EN, ISO, and JIS standards.
The regular minimum order quantity is approximately 25 tons. This equals one full container, and you can mix different steel types.
Yes, our professional quality control group conducts comprehensive pre-shipment inspections. This includes mandatory ultrasonic testing based on specific material levels.
We actively source from trusted partner mills and regional ready-stock markets. This helps us fulfill specialized requests for materials we do not produce internally.
Yes, our dedicated machining factory provides precision cutting, milling, and grinding. We deliver finished flat bars and precision mold components.
