What is the ASTM equivalent of 1.4501?
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What material is 1.4501?
EN 1.4501 stainless steel, also known as X2CrNiMoCuWN25-7-4, is a super duplex stainless steel designed for high-stress, high-corrosion environments such as offshore platforms, chemical processing plants, and desalination systems. It offers exceptional strength and resistance to chloride-induced corrosion.
What is the equivalent grade of 1.4501?
| Standard System | Designation |
|---|---|
| EN (Europe) | 1.4501 / X2CrNiMoCuWN25-7-4 |
| UNS (USA) | S32760 |
| ASTM | ASTM A240 / A479 S32760 |
| ISO | X2CrNiMoCuWN25-7-4 |
| Trade Name | Zeron® 100 (by Rolled Alloys) |
What is the density of 1.4501 Austenitic-ferritic stainless steel?
| Grade : | X2CrNiMoCuWN25-7-4 | ||||||
| Number: | 1.4501 | ||||||
| Classification: | Austenitic-ferritic stainless steel - special grade | ||||||
| Density: | 7.8 g/cm ³ | ||||||
| Standard: |
|
Chemical composition % of steel X2CrNiMoCuWN25-7-4 (1.4501): EN 10088-2-2005
| Elements not listed in this table shall not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. |
| C | Si | Mn | Ni | P | S | Cr | Mo | W | N | Cu |
| max 0.03 | max 1 | max 1 | 6 - 8 | max 0.035 | max 0.015 | 24 - 26 | 3 - 4 | 0.5 - 1 | 0.2 - 0.3 | 0.5 - 1 |
Corrosion resistance of 1.4501 stainless steel
1.4501 steel - ASTM A182 F55 - Super Duplex Steel: UNS S32760 is resistant to seawater corrosion and has a high resistance to surface corrosion, pitting and crevice corrosion and is suitable for use in sulfuric acid environments. The material has tensile strength (PREN) values of 40 to > 46 J and good impact values and wear resistance at -40°C.
1.4501 stainless steel Physical Properties
| Density (kg/dm3 ) | 7,8 |
| Electr. Resistance at 20°C (Ω mm2 /m) | 0,8 |
| Thermal conductivity at 20°C (W/m K) | 15 |
| Specific heat capacity at 20°C (J/kg K) | 480-500 |
1.4501 stainless steel Heat treatment
The heat treatment of the 1.4501 is carried out by solution annealing in the range 1040-1120°C with rapid cooling in sufficient water and this is also recommended after welding larger cross sections.
| Temperature | Cooling | |
| Hot forming | 1.200°C - 1100°C | Air |
| Heat treatment | ||
| Solution annealing (+ AT) | 1.040°C-1140°C | Water (quick cooling) |
What is the difference between S32750 and S32760?
Both are super duplex steels, but S32760 (1.4501) contains added tungsten and copper, improving pitting resistance and weldability under specific conditions.
Need Certified 1.4501 / S32760 Super Duplex Products?
At Gnee Steel, we supply 1.4501 / UNS S32760 super duplex stainless steel plates, tubes, pipes, and bars with full compliance to ASTM, EN, and NORSOK standards.
🔹 Third-party inspection (TPI) available
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🔹 MTCs per EN 10204 3.1 / 3.2 available on request
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