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Help CenterHeat-resistant 45cr14ni14w2mo Stainless Steel Ingot, Corrosion-resistant S32590 Bright Round Bar, 40cr14ni14w2mo Round Steel
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Industry Pain Points and Solutions
In the fields of petrochemical, marine power, aerospace and other high-temperature and high-corrosion working conditions, equipment components are exposed to oxidizing atmospheres above 800°C or media containing sulfur and chlorine for a long time. Ordinary stainless steel is prone to serious oxidation, intergranular corrosion, a sudden drop in high-temperature strength and even fracture failure, resulting in a shorter equipment maintenance cycle and an increased risk of safety accidents. At the same time, different components have great differences in the demand for material forms (ingots, bright rounds, round bars). Traditional suppliers often have problems such as incomplete specifications and poor batch stability.
Liaocheng Jincheng Yangming Special Steel Co., Ltd. has been deeply involved in the special steel field for many years. In response to the above pain points, it has launched heat-resistant 45Cr14Ni14W2Mo stainless steel ingots, corrosion-resistant S32590 bright rounds and 40Cr14Ni14W2Mo round bars series of products. Relying on the geographical advantages of Liaocheng, Shandong, the company integrates the whole process resources of smelting, forging and rolling. By optimizing the alloy ratio and heat treatment process, the materials still maintain excellent oxidation resistance and creep strength at high temperatures, and at the same time meet the strict requirements of precision machining for surface finish and dimensional accuracy. With the business philosophy of “seeking truth from facts and being honest-based”, it provides stable and reliable high-temperature alloy solutions for various industries.
Working Mechanism and Product Features
The core design concept of this series of products is to form a stable austenitic matrix and carbide strengthening phase by reasonably adding alloying elements such as chromium, nickel, tungsten and molybdenum. The specific mechanism is as follows:
· Heat-resistant 45Cr14Ni14W2Mo: With a carbon content of about 0.45%, combined with 14% chromium and 14% nickel, a dense Cr₂O₃ oxide film is formed at high temperatures; tungsten (about 2%) and molybdenum (about 0.5%) enter the solid solution and precipitate M₂₃C₆-type carbides, which effectively pin the grain boundaries and significantly improve the high-temperature creep strength.
· Corrosion-resistant S32590: By adjusting the ratio of chromium, nickel and molybdenum (reference composition: Cr ≥25%, Ni ≥20%, Mo ≥4%), this grade shows super strong pitting corrosion resistance and crevice corrosion resistance in reducing media, and is widely used in components such as chemical heat exchangers and valves that are in contact with highly corrosive fluids.
· 40Cr14Ni14W2Mo: Compared with the 45Cr series, the carbon content is slightly lower (about 0.40%), which balances strength and plasticity and is more suitable for subsequent processing such as forging and cold drawing.
Product features:
1. High-temperature and oxidation resistance: It can be used continuously at 900–1000°C, and the oxidation weight gain rate is less than 0.1g/(m²·h).
2. Multifaceted corrosion resistance: Different grades are adjusted to deal with oxidizing acids, reducing acids and chlorine-containing environments respectively.
3. Flexible processing performance: Provide ingots (for remelting and forging), bright rounds (with finely turned surfaces for direct part processing), and round bars (hot-rolled or cold-drawn for further turning) in three forms to meet the needs of different processes.
4. Batch stability: Adopt the double-process of electric arc furnace + refining furnace to control the composition fluctuation within the upper limit of the national standard.
| Parameter item | Reference value | Remarks |
| Tensile strength (at room temperature) | ≥650 MPa | According to GB/T 1221-2007 |
| Yield strength (at room temperature) | ≥315 MPa | Quenched and tempered state |
| Elongation | ≥20% | Longitudinal |
| High-temperature oxidation resistance | Oxidation weight gain at 900℃×100h ≤0.05g/m² | Actual measurement data |
| Surface roughness (bright round) | Ra≤1.6μm | Customizable grinding |
| Round bar diameter range | Φ20–Φ300mm | Hot-rolled/cold-drawn |
Advantage summary
Full form supply
Trust endorsement and consulting advice
Liaocheng Jincheng Yangming Special Steel Co., Ltd. is located in Liaocheng, Shandong, a steel distribution center. It mainly deals in special steel grades such as precipitation hardening steel, duplex steel, heat-resistant steel, and corrosion-resistant alloys. Its products are widely used in industries such as petroleum, chemical, shipbuilding, nuclear engineering, aerospace, mining, textile, and construction machinery. The company adheres to “Seek truth from facts and be honest”Following this principle, we have built a good reputation in the industry. All materials leaving the factory come with component reports and mechanical property test data, which can be traced back to the smelting furnace number. We understand the rigor of selecting superalloys. Therefore, we suggest that you provide specific working condition information such as the operating temperature, medium composition, and stress state before making a purchase. Our technical team will recommend the most suitable grade and form for you. You are welcome to call us or visit our factory for an inspection. We will provide free sample testing and process guidance according to your needs.
FAQ
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Q1: What are the main differences between 45Cr14Ni14W2Mo and 40Cr14Ni14W2Mo?
A: The matrix components of the two are similar. The main difference lies in the carbon content (0.45% vs 0.40%). The 45Cr series has more carbides and higher high - temperature strength, but slightly lower plasticity, which is suitable for components bearing large static loads; the 40Cr series has better toughness and is suitable for forged parts or parts requiring subsequent cold processing. -
Q2: Is the S32590 round bar suitable for environments containing chloride ions?
A: Yes. S32590 has a high chromium and molybdenum content. Its pitting potential in chloride solutions is much higher than that of 316L. It is commonly used in chlorine - containing working conditions such as seawater desalination and bleaching processes. However, it should be noted to avoid long - term use in high - temperature and strongly reducing media. -
Q3: What surface tolerance can the round bar achieve?
A: Our round bar products can achieve a tolerance of h9 level, and the surface roughness Ra ≤ 1.6μm. If the customer requires higher precision, we can negotiate to use the centerless grinding process, and Ra can reach 0.4μm. -
Q4: Does this batch of materials need solution treatment?
A: Heat - resistant grades are usually in the solution + aging treatment state when supplied to obtain the best comprehensive performance. If the customer requires the annealed state for subsequent processing, we can also provide it as required and attach heat - treatment process suggestions. -
Q5: What is the maximum single weight of the ingot?
A: Currently, we can provide steel ingots with a single weight of 200kg–5 tons. Larger specifications need to be negotiated in advance. The surface of the ingot is ground and free of defects such as cracks and slag inclusions. -
Q6: Can your company provide third - party inspection reports?
A: Yes. Our company has long - term cooperation with third - party inspection agencies such as SGS and Intertek. We can issue inspection reports including items such as chemical composition, mechanical properties, metallographic structure, and intergranular corrosion tests. The fees will be negotiated separately. -
Q7: How to choose the fixed length of the round steel?
A: The standard supply length is 4–6m. It can also be cut to length according to the customer's requirements (2–9m). For extra - long lengths, transportation limitations need to be considered. It is recommended to communicate in advance. -
Q8: Which grade is recommended for long - term service at 800–900℃?
A: It is recommended to give priority to 45Cr14Ni14W2Mo because of its higher carbon content and better high - temperature creep strength; if there is an oxidizing atmosphere at the same time, S32590 can be considered because of its higher chromium content and a more compact antioxidant film.
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