Custom Cast Carbon Steel Parts Manufacturer
Cast Carbon Steel Parts
China Simis Company is a leading OEM custom manufacturer of high-quality Carbon Steel Casting Parts (Cast Steel Components), providing robust and high-strength components for the world’s most demanding industrial sectors. Carbon steel offers an exceptional balance of strength, ductility, and cost-effectiveness, making it the most utilized ferrous material for structural and wear applications across all major industries.
Our carbon steel casting components are engineered to withstand high static and dynamic loads, impact stress, and abrasive wear. By controlling the carbon content (low, medium, or high), we tailor the material properties—from excellent weldability and toughness (low C) to high yield strength and hardness (medium/high C). Precision Investment Casting for smaller, intricate components requiring a superior surface finish, and Resin Sand Casting for massive, heavy-duty structural parts. By strictly adhering to international standards such as ASTM A216 and EN 10213, Simis ensures that every casting delivers the reliable mechanical properties required for safety-critical applications in mining, construction, and energy.
What are the casting processes for carbon steel?
The carbon steel casting method is chosen based on the part's size, required complexity, surface finish, and quantity. All processes focus on achieving superior internal quality (soundness) for strength, which is the core technical guarantee for the stable performance of carbon steel castings in high-load scenarios.
| Manufacturing Process | Component Focus | Material Standards | Key Advantage for Carbon Steel Performance |
| Precision Investment Casting | Valve bodies, small gears, brackets, and high-detail levers. | ASTM A216 WCB/WCC | EN 1.0619. | Superior Surface & Detail. Achieves complex internal geometries and thin walls with a smooth finish, reducing the need for secondary machining. |
| Resin Sand Casting | Massive pump housings, heavy machinery frames, mining teeth. | ASTM A27 | EN 10213-2. | Large-Scale Durability. The most cost-effective method for casting large, thick-walled steel parts (up to several tons) with high structural integrity. |
| Shell Mold Casting | Medium-sized components requiring high dimensional consistency. | Carbon Steel Grades. | Dimensional Precision. Offers a better surface finish and tighter tolerances than traditional sand casting for high-volume parts. |
| Full Annealing & Normalizing | All carbon steel cast components. | Process Standard. | Stress Relief. Refines the grain structure and removes internal stresses, ensuring the steel is not brittle and is easy to machine. |
| Precision CNC Machining | Mating surfaces, threaded holes, and high-tolerance bores. | All Carbon Steel Grades. | Functional Accuracy. Ensures cast parts integrate perfectly into complex assemblies with micron-level precision. |
| Quenching & Tempering (Q&T) | Wear-resistant parts and high-load structural components. | Process Standard. | Mechanical Enhancement. Significantly increases the hardness and tensile strength of the steel for extreme-wear environments. |
What are the classifications of carbon steel castings based on their carbon content?
Carbon content is the primary lever used to balance a cast part's mechanical properties, adhering to standards like ASTM A27, A216, and A148, which is the key to meeting the diverse performance requirements of different industrial applications.
| Carbon Content | Performance Characteristics | Typical Casting Grade Example | Typical Application Focus |
| Low Carbon Steel (< 0.20% C) | Excellent weldability and ductility. High toughness and shock resistance, though lower surface hardness. | ASTM A216 WCA/WCB | EN 1.0619 | Structural housings, parts requiring field welding or extreme impact resistance. |
| Medium Carbon Steel (0.20%-0.50% C) | The best balance of strength, hardness, and ductility. Highly responsive to heat treatment (Quenching & Tempering). | ASTM A27 70-40 | AISI 1030 / 1045 | Gears, wheels, brake components, and moderate load bearing parts. |
| High Carbon Steel (> 0.50% C) | Maximum hardness and wear resistance. Reduced ductility and weldability; ideal for abrasive environments. | AISI 1060 / 1095 | ASTM A148 | Roller components, abrasive environment wear plates. |
| Alloy Carbon Steel | Infused with Cr, Ni, Mo, or Mn to enhance hardenability, corrosion resistance, and high-temperature strength. | ASTM A217 WC6/WC9 | 4140 / 4340 | Heavy-duty pins, high-stress rail components. |
What Quality Assurance and Process Control Measures Apply to Carbon Steel Castings?
Controlling the internal quality and dimensional accuracy of cast steel is paramount for reliability in heavy-duty applications, and the following measures ensure that each carbon steel casting meets strict industrial standards.
·Nondestructive Testing (NDT):
Mandatory Ultrasonic Testing (UT) and Radiographic Testing (RT) are used to ensure the absence of internal defects such as porosity, shrinkage, and gas inclusions, which are fatal flaws in high-stress cast steel components.
·Weld Repair Management:
Cast steel often requires weld repair to fix minor surface imperfections. Simis strictly controls the welding procedure (pre-heat, filler material, post-weld heat treatment) to maintain the original mechanical properties of the base metal.
·Dimensional Accuracy:
Final machining of critical mounting surfaces, bores, and threads is performed using CNC centers, ensuring precise fitment and geometric tolerances for assembly into final machinery.
·Chemical Certification:
Detailed chemical analysis (using Spectrometry) is performed on every heat to ensure the carbon equivalent (CE) and alloy content strictly match the required ASTM/AISI specification.
What Are the Application Fields of Casting Carbon Steel Parts?
Customized carbon steel castings are widely used in key systems in the following industries, providing reliable structural support for various heavy-duty equipment and facilities.
| Industrial Sector | Typical Casting Carbon Steel Components |
| Mining & Quarrying | Excavator bucket teeth, crusher liners, track shoes, conveyor pulleys, and grizzly bars. |
| Construction Machinery | Hydraulic cylinder mounts, pivot pins, structural brackets, idlers, and crane sheaves. |
| Oil, Gas & Petrochemical | High-pressure valve bodies, pump casings, flanges, blow-out preventer (BOP) components. |
| Energy & Power Gen | Steam turbine housings, boiler fittings, wind turbine hub connectors, and solar tracker mounts. |
| Railway & Transport | Couplers, side frames, bolsters, brake shoes, and axle boxes. |
| Agriculture & Forestry | Plowshares, tiller tines, hitch components, and heavy-duty harvester frames. |
| Maritime & Offshore | Anchor components, mooring bollards, rudder pintles, and winch drums. |
| Metallurgy & Cement | Rolling mill housings, kiln tires, cooling plates, and slag pots. |
| Material Handling | Forklift carriages, lifting hooks, geared wheels, and heavy-duty casters. |
What Are the Advantages of Simis OEM Custom Carbon Steel Castings?
Partnering with Simis ensures material reliability, structural soundness, and cost-effective production of complex steel parts, and the following advantages can help customers gain a competitive edge in their respective fields.
·Internal Soundness Guarantee:
We employ advanced casting techniques (riser and gating design optimization) and mandatory NDT to certify the internal integrity of the casting against critical structural flaws.
·Tailored Material Properties:
We customize the chemistry and heat treatment procedure to provide the exact balance of yield strength, elongation, and toughness required by the application's load profile.
·Weldability Expertise:
We specialize in casting low-carbon and low-alloy steel components that require subsequent welding for assembly or repair, ensuring predictable and reliable weld performance.
·High Complexity Capability:
We leverage Investment and Shell Mold Casting to produce intricate, near-net-shape components that minimize expensive final machining time.
How to Get a Quote for Custom Carbon Steel Casting Parts?
China Simis Company provides a full spectrum of Carbon Steel Casting Parts (Steel Casting Service) tailored to your specific strength and budget requirements. From precision-engineered Investment Castings to massive Sand Castings, we deliver the structural backbone for your industrial success. To obtain a detailed and accurate quotation for your custom carbon steel casting project, please submit the following key technical documents and specifications to our professional engineering department: 2D technical drawings or 3D models of the component, specific requirements for ASTM/AISI material grade, mandatory NDT inspection level, heat treatment process specification, detailed description of the target application and its static/dynamic load conditions, and expected annual production volume. Our technical team will conduct a comprehensive feasibility analysis and cost evaluation based on the provided information, and provide a quotation package including unit price, tooling investment, production lead time, quality control plan and delivery terms.
