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Help CenterGerman Standard X3crnimo13-4 Stainless Steel Round Bar, Low-carbon Super Martensitic 1.4313 Stainless Steel Round Rod, Cutting
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Industry pain points and solutions: Under harsh working conditions such as petrochemical, hydropower, and aerospace, traditional martensitic stainless steels (such as 410 and 420) have high hardness but obvious deficiencies in toughness and a tendency for cold cracking during welding. Especially in environments containing chloride ions or wet hydrogen sulfide, their corrosion resistance drops sharply, leading to frequent equipment failures and a significant increase in maintenance costs. At the same time, although austenitic stainless steel has excellent corrosion resistance, its strength is relatively low, making it difficult to meet the requirements of high-pressure components. Liaocheng Jincheng Yangming Special Steel Co., Ltd. has been deeply involved in the special steel field for many years. In response to this contradiction, it focuses on promoting German standard X3CrNiMo13 - 4 (1.4313) stainless steel round bars - a low-carbon super martensitic stainless steel. By precisely controlling the carbon content (≤0.05%) and adding nickel and molybdenum elements, on the basis of maintaining the high strength of martensite, the toughness and corrosion resistance are significantly improved. It is especially suitable for the manufacturing of parts that require no heat treatment after welding or thin-walled complex structural parts. Relying on the mature special steel processing industrial chain in Liaocheng, Shandong, the company implements strict internal control standards from raw material selection to finishing and cutting, providing customers with a one-stop solution from bars to customized sizes, effectively solving the industry pain points of traditional martensitic steels, such as "strong but not tough, prone to rust and cracking".
Product details:
- Working mechanism and manufacturing process: The round bars are smelted by electric arc furnace or AOD refining. After continuous casting into billets, they are hot-rolled or forged through multiple passes, and then undergo quenching and tempering heat treatment (quenching + high-temperature tempering) to obtain tempered martensite structure. The low-carbon design reduces the precipitation of carbides in the matrix. Combined with the solid solution strengthening of Ni and Mo elements, it not only ensures high strength and hardness but also avoids the brittleness of traditional martensitic steels caused by high carbon content. The final products are delivered in black skin, polished or turned states, and can be precision cut (such as sawing, wire cutting) to the specified length according to customer requirements.
- Core product features and advantages:
- Excellent combination of mechanical properties: The tensile strength can reach 800 - 1000 MPa, the yield strength is ≥650 MPa, the elongation is ≥15%, the reduction of area is ≥45%, and the impact energy (V-notch) is ≥60 J (-20℃). It still maintains good toughness at -40℃, meeting the requirements of low-temperature working conditions.
- Breakthrough in corrosion resistance: Due to containing ≥3.5% Ni and ≥0.3% Mo, its pitting and crevice corrosion resistance is better than that of ordinary martensitic steels. It performs reliably in environments containing chlorine, hydrogen sulfide, and marine atmosphere, with a wide pH value adaptation range (3 - 10).
- Excellent welding performance: Low carbon equivalent (CE ≤ 0.65). No preheating is required before welding or only low-temperature preheating is needed. No immediate heat treatment is required after welding, which can simplify the manufacturing process and reduce the risk of welding cracks. It is recommended to use homogeneous welding wires or nickel-based alloy welding wires.
- Wide processing adaptability: It can undergo conventional machining processes such as turning, milling, drilling, and tapping, as well as hot forging and hot bending for forming. The surface can be treated by pickling, passivation, polishing, etc. to obtain a mirror or matte effect.
- Technical specification sheet (customizable):
- Application fields: It is mainly used for manufacturing key components that require both strength and corrosion resistance, such as hydroelectric power generation equipment (turbine runners, guide vanes), oil and gas valves and pump bodies, ship propeller shafts, chemical pressure vessels, aerospace components, medical devices, food machinery, and high-strength fasteners.
| Parameter item | Typical value/range | Remarks |
| Diameter range | Φ10 – Φ500 mm | Larger sizes can be negotiated |
| Length | 1000 – 6000 mm | Or cut according to customer requirements |
| Delivery status | Annealed, quenched and tempered, solution treated + aged | Quenched and tempered state is commonly used |
| Surface | Black skin, ground, turned | Bright bars can be customized |
| Straightness | ≤2 mm/m | Can be lower with precision straightening |
Typical chemical composition (wt%): C ≤ 0.05, Si ≤ 0.7, Mn ≤ 1.0, Cr 12.0~14.0, Ni 3.5~4.5, Mo 0.3~0.7, P ≤ 0.04, S ≤ 0.03. It meets the requirements of DIN EN 10088-3 for 1.4313.
Trust Endorsement and Consultation Advice: Liaocheng Jincheng Yangming Special Steel Co., Ltd. has over a decade of supply experience in the special steel field, having served more than 500 customers in total, covering multiple industries such as oil, chemical, shipbuilding, nuclear power, and textile machinery. The company always adheres to the business principle of "seeking truth from facts and putting integrity first". For each batch of round steel, a standard material report, dimensional inspection record, and traceable production batch number can be provided. In recent years, we have carried out a lot of optimization on the materials for key components in the hydropower and valve industries, helping customers reduce shutdown accidents caused by material failure. If you are looking for stainless steel round bars with high strength, high toughness, good weldability, and corrosion resistance, or have questions about the material's heat treatment process and machining characteristics, you are welcome to contact our technical team at any time. You can provide specific operating condition parameters (working temperature, medium, stress condition), and we will recommend the most suitable material specifications and heat treatment system for you. We support small-batch sample trial production and provide professional cutting and blanking services. We sincerely invite you to visit our factory in Liaocheng, Shandong, or call to obtain samples and technical manuals.
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