2205 stainless steel is a strong and highly corrosion-resistant metal material and is one of the most common stainless steels on the market. Today, I want to introduce to you 2507 stainless steel, which is a better and higher-performance stainless steel material.
First, let us understand the composition and performance of 2507. 2507 is a duplex stainless steel composed of chromium, nickel, molybdenum, nitrogen and other elements. It has good corrosion resistance, high strength, high toughness, good stress corrosion resistance and excellent welding performance. Therefore, it has become It is one of the most widely used metal materials in modern industry.
Next, let’s take a look at the application range of 2507 stainless steel. Due to its outstanding performance, 2507 stainless steel is widely used in various fields such as marine, chemical, petroleum, aerospace and other fields. Especially in marine and other harsh industrial environments, the excellent performance of 2507 is particularly outstanding.
Compared with other stainless steels, 2507 stainless steel has its unique advantages. First of all, in terms of corrosion resistance, it has more advantages than other duplex stainless steels such as 2205 and 2304; secondly, in terms of strength, 2507 stainless steel is also better than 2205; in addition, in terms of welding performance, 2507 is also superior to other stainless steel materials. Incomparable.
So, what are the brands and standards in the United States and Japan? In the United States, 2507 stainless steel is UNS S32750, while in Japan it is named JIS SUS329J3L. Both stainless steel standards recognize its outstanding performance and quality.
Finally, let’s compare 2205 and 2507 stainless steel. Although 2205 and 2507 stainless steel have some similarities in composition and performance, 2507 stainless steel has better corrosion resistance and higher strength than 2205. Although the price of 2507 stainless steel is relatively high, its excellent properties can be used to reduce usage and thereby save costs.
To sum up, 2507 stainless steel is an excellent metal material with excellent performance and wide range of applications. Compared with other stainless steel materials, it has more outstanding corrosion resistance and strength and is the preferred metal material in modern industry.
2507 (UNS 32750)
Material grade: 2507 (UNS 32750) duplex steel
US grade: UNS 32750
German brand: 1.4410
1. Overview of 2507 Duplex Steel:
2507 is a ferritic-austenitic (duplex) stainless steel that combines the beneficial properties of many ferritic steels and austenitic steels. Since the steel has high chromium and molybdenum content, it has extremely high Good resistance to pitting corrosion, crevice corrosion and uniform corrosion. The dual-phase microstructure ensures that the steel has high resistance to stress corrosion cracking and high mechanical strength.
2. Chemical composition of 2507 stainless steel:
C≤0.03, Si≤0.80, Mn≤1.2, Cr:24-26, Ni:6-8, S≤0.02, P≤0.035, Mo:3-5, N:0.24-0.32
After suitable solution treatment of 2507 stainless steel, the microstructure of this steel has an ideal dual-phase structure with an α/γ ratio of approximately 50/50. When the solid solution temperature is above 1050°C, the number of ferrite phases in the steel will increase as the temperature increases. However, due to the high nitrogen content, the phase ratio of the steel will not change significantly below 1300°C. If this steel is not aged at different temperatures (or affected by heat), γ2 will be formed on the α+γ matrix and δ, χ, R, α` intermetallic phases and Cr2N and other oxides will precipitate. Due to the carbon content in the steel Low (generally 0.01%-0.02%), so there are generally no carbides in steel.
2507 steel strip
3. Mechanical properties of 2507 stainless steel products:
1. Room temperature mechanical properties of 2507 duplex stainless steel pipe: steel type: wall thickness ≤20mm; δb/MPa: 800-1000, δ0.2/MPa: ≥550, δ5/%: ≥25, hardness (HV): 290
2. Mechanical properties of 2507 duplex stainless steel plate at room temperature - 200°C:
Steel type Temperature/℃ δb/MPa
Room temperature ≥530
Plate 100 ≥450
200 ≥400
3. Mechanical properties of 2507 large diameter seamless pipe
Outer diameter × wall thickness δb/MPa δ0.2/MPa δ5/% Hardness (HV)
273.0mm×4.19mm 894 644 40 284
323.9mm×4.57mm 858 662 45 270
406.4mm×4.74mm 854 657 41 272
4. National standards:
ASTM/ASME:A240-UNS S32750
EURONORM:1.4410 - X2 Cr Ni MoN 25.7.4
AFNOR:Z3 CN 25.06 Az
DIN/EN 1.4410, ASME SA-240
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