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As a leading manufacturer and exporter of high-performance stainless steels, Gangsteel specializes in producing and supplying UNS S41500 (AISI 415) materials to industries worldwide. With decades of expertise in martensitic stainless steels, we ensure our products meet stringent international standards such as ASTM, EN, and ASME. In this article, we delve into the equivalence between UNS S41500 and AISI 415 stainless steel, exploring its properties, applications, and benefits. Whether you're in oil and gas, power generation, or reactor technology, understanding this versatile alloy can optimize your material selection.
UNS S41500 is a martensitic stainless steel alloy, designated under the Unified Numbering System (UNS) for metals and alloys. It is commonly known by its European equivalent EN 1.4313 (X3CrNiMo13-4) and also referred to as F6NM. This grade features a balanced composition of chromium (13%), nickel (4%), and molybdenum (0.5%), which imparts excellent corrosion resistance, high strength, and good toughness across a wide temperature range from -60°C to 300°C.
At Gangsteel, we produce UNS S41500 in various forms, including plates, bars, forgings, and custom components. Our manufacturing process involves precise heat treatment—quenching and tempering—to achieve optimal mechanical properties, ensuring compliance with standards like ASTM A182, A240, and A743. This alloy's soft martensitic structure makes it ideal for applications requiring weldability and resistance to sulfide stress cracking.
Yes, UNS S41500 is directly equivalent to AISI 415 stainless steel. The American Iron and Steel Institute (AISI) designation 415 corresponds to the same chemical and mechanical profile as UNS S41500. Both refer to a 13% chromium martensitic stainless steel with added nickel and molybdenum for enhanced corrosion resistance and hardenability.
This equivalence is recognized across global standards:
Minor variations may exist in specific standards (e.g., carbon content affecting machinability), but for practical purposes, they are interchangeable. At Gangsteel, we certify our products under multiple designations to facilitate seamless integration into your projects, regardless of regional specifications.
The chemical composition of UNS S41500 / AISI 415 is tightly controlled to ensure consistent performance. Typical ranges include:
|
Element |
Composition (%) |
|---|---|
|
Carbon (C) |
0.05 max |
|
Manganese (Mn) |
1.00 max |
|
Phosphorus (P) |
0.040 max |
|
Sulfur (S) |
0.030 max |
|
Silicon (Si) |
1.00 max |
|
Chromium (Cr) |
11.50 - 14.00 |
|
Nickel (Ni) |
3.50 - 5.50 |
|
Molybdenum (Mo) |
0.50 - 1.00 |
This composition provides superior resistance to corrosion in harsh environments, including those with chlorides and hydrogen sulfide.
Mechanical properties after heat treatment (quenched and tempered) typically include:
Gangsteel's advanced production techniques, including vacuum induction melting and electroslag remelting, enhance purity and uniformity, resulting in materials that outperform standard requirements.
Due to its unique combination of strength, toughness, and corrosion resistance, UNS S41500 / AISI 415 is widely used in demanding sectors:
At Gangsteel, we have supplied UNS S41500 for major projects, including offshore platforms and power plant retrofits, demonstrating its reliability in real-world applications.
In summary, UNS S41500 is fully equivalent to AISI 415 stainless steel, offering a robust martensitic alloy with excellent corrosion resistance, high strength, and good weldability. As a key player in the production and export of this material, Gangsteel ensures top-quality products tailored to your needs. Whether for standard or custom specifications, this grade provides a cost-effective solution for challenging industrial environments.
What is the difference between UNS S41500 and AISI 415?
There is no significant difference; UNS S41500 is the standardized UNS designation for AISI 415. Both share the same chemical composition and properties.
What standards does UNS S41500 comply with?
It complies with ASTM A182 (forgings), A240 (plates), A743 (castings), ASME SA240, and EN 10088-3, among others.
Is UNS S41500 suitable for welding?
Yes, it exhibits good weldability when preheated to 150-250°C and post-weld heat treated to restore toughness.
What heat treatment is required for AISI 415?
Typical treatment involves austenitizing at 950-1050°C, quenching in air or oil, and tempering at 550-650°C for optimal balance of strength and ductility.
Can Gangsteel provide custom sizes of UNS S41500?
Absolutely. As a manufacturer, we offer plates, bars, and forgings in custom dimensions, with full traceability and third-party testing.
For inquiries or to request a quote on UNS S41500 / AISI 415 stainless steel, contact Gangsteel today. Our team is ready to support your material needs with global export capabilities and competitive pricing.
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