Alloy Steel Castings

Alloy Steel Castings
Alloy steel castings refer to metal products made from various alloy steel materials through different casting processes. These castings are based on stainless steel castings, with additional elements incorporated into the raw materials to meet specific mechanical performance requirements. Compared to traditional metal casting with single-material steel, alloy steel castingโ€”enhanced with elements such as manganese, nickel, chromium, vanadium, and molybdenumโ€”significantly improves the material’s properties. It enhances strength, hardness, toughness, and wear resistance, making alloy steel castings ideal for demanding industrial applications.
Leierwoโ€™s Expertise in Alloy Steel Castings
At Leierwo, we specialize in manufacturing high-performance alloy steel castings with superior strength, toughness, and corrosion resistance. Our advanced production capabilities and strict quality control ensure that every alloy steel casting meets the highest industry standards. Whether for heavy machinery, automotive components, or specialized industrial equipment, our alloy steel castings deliver exceptional performance and reliability.
Supporting Various Metal Casting Processes
Capable of casting different types of alloy steel
Supports secondary machining operations
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Alloy Steel Castings

Common Alloy Steels for Casting

Grade Carbon Content (%) Silicon (%) Manganese (%) Chromium (%) Molybdenum (%) Phosphorus โ‰ค (%) Sulfur โ‰ค (%)
 Nickel (%)
42CrMo 0.38-0.45 0.17-0.37 0.50-0.80 0.90-1.20 0.15-0.25 โ€” โ€” โ€”
35CrMo 0.32-0.40 0.17-0.37 0.40-0.70 0.80-1.10 0.15-0.25 โ€” โ€” โ€”
40CrNiMo 0.37-0.44 0.17-0.37 0.17-0.37 0.60-0.90 0.15-0.25 โ€” โ€” 1.25-1.65
4130 0.28-0.33 0.15-0.35 0.40-0.60 0.40-0.60 0.15-0.25 0.035 0.04 โ€”
4140 0.38-0.43 0.15-0.35 0.75-1.00 0.80-1.10 0.15-0.25 0.035 0.04 โ€”
8630 0.28-0.33 0.15-0.35 0.70-0.90 0.40-0.60 0.15-0.25 0.035 0.04 0.40-0.70
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If you are looking for a reliable alloy steel investment casting supplier in China, contact us today. We are happy to start our cooperation with a trial order at a competitive price.
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Alloy Steel Investment Casting
We strictly follow Standard Operating Procedures (SOP) in every stage of our production process for alloy steel castings. The main steps include: pouring simulation, mold development for alloy steel castings, raw material inspection, wax pattern making, shell making, metal pouring for alloy steel castings, cleaning and heat treatment, inspection, warehouse packaging, and shipping of alloy steel castings.
Alloy Steel Castings
Mold Development
Our technical department develops the molds, while the quality department conducts dimensional inspections using a coordinate measuring machine (CMM).
Alloy Steel Castings
Wax Pattern
The workshop utilizes fully automated wax injection machines, which automatically set wax injection pressure, holding time, and other parameters to produce high-quality wax patterns.
Shell Preparation
The workshop operates four automated production lines with an annual capacity of 1,800 shell molds. We monitor the humidity, temperature, and concentration of the aluminum chloride solution using hygrometers, barometers, and pH meters.
Metal Pouring
Currently, six 500KG furnaces are in production, with an additional four 500KG backup furnaces available for increased capacity. All operators undergo rigorous testing to ensure materials meet required specifications.
Cleaning & Heat Treatment
Our fully equipped workshop includes 10 heat treatment furnaces, 5 quenching furnaces, 2 central shot blasting machines, and 15 large shot blasting machines.
Inspection
All raw casting dimensions are inspected using a CMM (Coordinate Measuring Machine). We also utilize Rockwell hardness testers, dynamic balancing machines, and roundness testers. Our certified quality control team conducts UT (Ultrasonic Testing), PT (Penetrant Testing), and MT (Magnetic Particle Testing) to ensure product quality.
Alloy Steel Sand Casting
Mold Development
Molds are designed and manufactured according to drawing requirements for alloy steel castings. For single-piece production, wooden molds can be used, while plastic or metal molds are preferred for mass production of alloy steel castings. For high-volume casting, templates are utilized. Our molds are primarily made from aluminum.
Modeling (Core Making)
This process includes:
Molding โ€“ Creating the mold cavity using molding sand.
Core Making โ€“ Forming the internal shape of the casting.
Assembly โ€“ Placing the core into the mold cavity and sealing the upper and lower sandboxes.
Molding is a crucial step in the casting process.
Melting
Based on the required metal composition for alloy steel castings, a chemical composition analysis is conducted. The appropriate melting furnace is selected to melt alloy materials into a qualified liquid metal with the correct composition and temperature for alloy steel castings.
Alloy Steel Castings
Metal Pouring
The qualified molten metal for alloy steel castings is poured into the sand mold within the sandbox. Since the pouring stage involves high safety risks, we enforce strict process controls to ensure the safety of our employees during the production of alloy steel castings.
Cleaning & Heat Treatment
Once the molten metal has been poured and solidified, the sand mold is removed, and excess materials such as gates and risers are cleaned off to form the final casting.
Inspection
All raw casting dimensions are inspected using a CMM (Coordinate Measuring Machine). We also utilize Rockwell hardness testers, dynamic balancing machines, and roundness testers. Our certified quality control team conducts UT (Ultrasonic Testing), PT (Penetrant Testing), and MT (Magnetic Particle Testing) to ensure product quality.
Customizable Surface Treatment Options
Shot Blasting
Shot blasting is a highly effective surface treatment process that involves propelling abrasive materials at high speeds to remove surface contaminants, scale, or rust. This process not only cleans the surface but also improves its adhesion for subsequent coatings. Additionally, shot blasting enhances fatigue resistance, making it ideal for alloy steel castings used in high-stress applications.
Machining
Machining is a precision process used to achieve tight tolerances and smooth surface finishes on alloy steel castings. It includes operations such as milling, turning, drilling, and grinding, ensuring that the final product meets specific dimensional and functional requirements. Our advanced machining capabilities allow us to deliver alloy steel castings with exceptional accuracy and quality.
Paint Coating
Paint coating provides both protective and decorative finishes to alloy steel surfaces. This process enhances corrosion resistance while offering a variety of color and texture options. Whether for aesthetic appeal or functional requirements, paint coating is a versatile solution for alloy steel castings used in various industries.
Powder Coating
Powder coating is a dry finishing process that creates a durable, wear-resistant, and corrosion-resistant surface. This method ensures a uniform appearance and is available in a wide range of colors and textures. Powder coating is particularly suitable for alloy steel castings exposed to harsh environments or requiring long-lasting protection.
Galvanized Coating
Galvanization involves applying a layer of zinc to the steel surface, offering excellent corrosion protection. Hot-dip galvanizing and electro-galvanizing are common methods used to extend the lifespan of steel components.
Black Oxide Coating
Black oxide treatment creates a thin, black protective layer on the steel surface to improve corrosion resistance and reduce light reflection. It is commonly used in automotive, aerospace, and tooling applications.

Start Your Project with Leierwo

1. Submit Your Inquiry
Send your CAD drawings and 3D files via email, specifying material grade, order quantity, surface finish, or any other relevant details.
2. Cost Calculation
Once we receive your design, our engineering team will carefully evaluate the drawings and calculate the price based on actual production costs as soon as possible.
3. Start Production
Upon pricing approval, our production team will prepare the materials and schedule production promptly. Leierwo always ensures on-time delivery.
4. Arrange Delivery
After production is completed, we will provide packaging details and arrange shipment via sea or air. We support global shipping for every order.

FAQ

We are a factory with over 20 years of experience in casting and machining. We have rich expertise in this industry. If you come across suppliers claiming to produce castings in a wide range of materials (such as steel, iron, stainless steel, copper, etc.), they are likely trading companies. If you see workshops actively producing parts, you can be assured that we are a genuine manufacturer.

Yes, as long as we receive CAD files or compatible 3D models that can be viewed with software like First Quote or Firstcut browser, we can provide a quotation. Please note that 2D drawings alone are insufficient for manufacturing precision components.

We support 3D CAD models from SolidWorks (.sldprt), ProE (.prt), and other CAD systems, commonly in IGES (.igs), STEP (.stp), ACIS (.sat), or Parasolid (.sat) formats.

We have an internal service system that responds to emails within 4 hours. If your request is urgent, please specify it in your email so we can prioritize your inquiry.

For rapid prototyping:
Silica sol casting: 20โ€“30 days
Sand casting: 7โ€“10 days
For mass production with machining included, the typical lead time is 45โ€“60 days.
More complex parts may require a different delivery schedule.

Yes, we provide samples based on your drawings for you to confirm structure and quality. If the sample does not meet your requirements, we will replace it free of charge until it is qualified.

We accept T/T (bank transfer), Alipay, credit card, etc. Typically, we require a 30% down payment upon order confirmation and the remaining 70% before shipment. For custom parts with complex requirements, additional pricing terms may apply.

We have a comprehensive quality control system that covers every step, from raw material procurement to machining processes and final inspection. For critical components, we strictly follow drawing standards and customer specifications.

All customer data is kept confidential. Only trained engineers are authorized to handle production orders. Third-party inspection or factory audits are welcome, or you may use our in-house quality team for final inspection.

Yes, we guarantee that all materials used are 100% genuine and as specified.

We value long-term cooperation and support our customersโ€™ production needs.

We believe every honest customer is a friend, and we treat our partnerships sincerelyโ€”building friendships and strong teams regardless of where our customers come from.

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