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Help Center13crmo44 Round Steel Resistant to High-temperature Creep, 13crmo4-5/1.7335 Structural Round Bar Resistant to Hydrogen-containing Corrosion, Cutting
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Industry Pain Points and Solutions
In high-temperature and high-pressure working conditions such as petrochemical, power station boilers, and nuclear power equipment, metal materials face two severe challenges: high-temperature creep and hydrogen corrosion. Long-term service in high-temperature fields will cause grain boundary slip and dislocation climb inside the steel, leading to slow plastic deformation of the material until fracture. And the hydrogen-containing medium will react with the carbon element in the steel to form methane under high temperature and pressure, causing decarburization and microcracks (hydrogen corrosion), which seriously threaten the service life and safety of the equipment. Traditional carbon steel or low-alloy steel often struggles to balance both creep resistance and hydrogen corrosion resistance.
Company Background and Product Innovation
Liaocheng Jincheng Yangming Special Steel Co., Ltd. is located in Liaocheng City, Shandong Province. It is an enterprise mainly engaged in the wholesale industry and focuses on the research, development, and supply of special steel. The company's main products include precipitation-hardening steel, duplex steel, heat-resistant steel, corrosion-resistant alloys, etc. Its products are widely used in high-end fields such as petroleum, chemical industry, shipbuilding, nuclear engineering, and aerospace. In response to the above industry pain points, our company adopts the 13CrMo44/13CrMo4-5 (material number 1.7335) chromium-molybdenum alloy system. By precisely controlling the content and purity of Cr and Mo and supplemented with strict heat treatment processes, the high-temperature creep strength and hydrogen corrosion resistance of the steel are significantly improved. This round bar can be cut into any length according to customer requirements, flexibly meeting the manufacturing needs of various structural parts.
Working Mechanism and Product Features
13CrMo44/13CrMo4-5 belongs to low-alloy heat-resistant steel, and its excellent performance stems from the synergistic effect of alloying elements:
- Chromium (Cr): Improves oxidation resistance and corrosion resistance, forms a dense oxide film on the steel surface, and blocks hydrogen penetration;
- Molybdenum (Mo): Strengthens the ferrite matrix, inhibits the aggregation of carbides, and significantly improves the high-temperature creep resistance;
- Carbon content control: Appropriate carbon combined with stable carbide-forming elements reduces the risk of hydrogen corrosion.
| Technical Parameters | Typical Value/Range |
| Chemical Composition (%) | C: 0.10 - 0.18, Mn: 0.40 - 0.70, Cr: 0.70 - 1.15, Mo: 0.40 - 0.60, S ≤ 0.035, P ≤ 0.035 |
| Tensile strength (MPa) | ≥440 |
| Yield strength (MPa) | ≥295 |
| Elongation after fracture (%) | ≥22 |
| Operating temperature range (℃) | -20~550 |
| Size range (mm) | Round steel diameter 10 - 500, length can be customized |
| Implementation standard | DIN 17175 / EN 10216-2 / ASTM A335 |
Product advantages
1. Precise composition control: Adopt the secondary refining process outside the furnace to strictly control the content of harmful elements and ensure the stable performance of each batch;
2. Hydrogen corrosion resistance: The Cr - Mo alloy system forms stable carbides in a high - temperature and high - pressure hydrogen environment, effectively inhibiting the methane reaction;
3. Processing flexibility: Provide secondary processing services such as sawing, turning, and drilling. The products can be used upon delivery;
4. Full - size coverage: From thin rods as small as 10mm to thick rods as large as 500mm, meeting the needs of different structural designs;
5. Complete certifications: The products have passed material testing and quality assurance certificates can be provided, complying with international standards such as ASME and EN.
Trust endorsement and company statement
Liaocheng Jincheng Yangming Special Steel Co., Ltd. has adhered to the principle of seeking truth from facts and honesty for many years and has accumulated a good reputation in the special steel industry. We are well aware that each round steel bar bears the safety coefficient of the customer's equipment. Therefore, we implement full - process quality traceability from the entry of raw materials to the delivery of finished products. The company's products have been successfully applied in scenarios such as heat exchanger tube sheets of many medium - and large - sized petrochemical enterprises, suspension rods of power station boilers, and non - pressure - bearing structural parts of nuclear power plants. Their performance in high - temperature creep resistance and hydrogen corrosion resistance has been recognized by customers. We not only have a professional sales team to provide material selection suggestions but also can perform customized cutting according to your drawings or working conditions requirements, minimizing material waste. If you are struggling with material selection for high - temperature and high - pressure environments, welcome to call or consult online. Our technical engineers will recommend the most economical specifications and delivery plans for you based on specific parameters such as operating temperature, medium pressure, and service life. We look forward to working with you to safeguard industrial safety.
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