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NAS255

NAS255 Duplex Stainless Steel Bar

 

NAS 255 (UNS N08904, SUS 890L) is an austenitic stainless steel with superior corrosion resistance in comparison with Type 316L. Due to addition of Cu (1.5%), this material displays excellent corrosion resistance against reducing acids such as sulfuric acid and phosphoric acid. It is used in chemical plants and a wide range of other applications. Nippon Yakin supplies this product in plate, sheet and strip form.

Application:


Sulfuric acid, nitric acid equipment, seawater heat exchanger, chemical equipment, food equipment.

 

Physical characteristics:


Density g / cm3: 8.05
Specific heat J / (kg * k) (20 ℃): 452
Resistance μΩ * cm (20 ℃): 97
Thermal conductivity w / m * k (20 ° C): 12.2
Average coefficient of thermal expansion 10-6 / ℃:
20 to 200 ° C 14.9
20 to 300 ° C 15.3
20 ~ 400 ℃ 15.7
Longitudinal elastic modulus GPa: 190
Transverse elasticity coefficient GPa: 17
Magnetic: None (Permeability: μ≤1.01)
Melting point ℃: 1360 ~ 1397

 

Chemical composition:


Carbon (C) ≤ 0.020,
Manganese (Mn) ≤2.00,
Nickel (Ni) 23.0 to 28.0,
Silicon (Si) ≤1.0,
Phosphorus (P) ≤0.025,
Sulfur (S) ≤ 0.005,
Chromium (Cr) 19.0 ~ 23.0,
Copper (Cu) 1.0 to 2.0,
Molybdenum (Mo) 4.0 to 5.0,
Nitrogen (N) ≤0.10