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11 - 13 October 2022 // Nuremberg, Germany

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Exhibitors & Products Chillventa 2018
Zoom Image LOGO_Core Material Of S44660/S445J1/ S445J2 Series

Core Material Of S44660/S445J1/ S445J2 Series

LOGO_Core Material Of S44660/S445J1/ S445J2 Series

Core Material Of S44660/S445J1/ S445J2 Series

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  • Characteristics

Sea-water (Chloridion) Corrosion Resistance : S44660 is made to resist the high corrosive chloridion (sea-water) ;

Stress-corrosion crack Resistance: 100℃40%NaCl, 90% of the Yield strength: 316L cracked within 400Hrs, while S44660 withstood over 5,000Hrs without cracking.

Electric-chemic corrosion Resistance: Electric-chemic molecular electric potential is high & negative, very stable

  • Manufacturing Know-hows

Welding is a very important process, Grin has the manufacturing know-how & experience to produce.


S445J1/J2 Instead of S304, S316, copper tubes, mainly used for heat exchanger, condenser, heating equipment, heating tube, solar collector (coating tube), power station auxiliary condenser, lithium bromide refrigeration equipment, heating network heater, city power plant for heating water for heating city water supply with stainless steel pipe.

  • The corrosion resistance of S445J2 is good, especially the corrosion resistance of Cl- is better. In S316L. In particular, the pitting corrosion resistance of high corrosion potential and high weight loss is excellent. The conclusion is that: S430
  • S445J2 has higher yield strength, proper tensile strength, good elongation and ductility. From the test, it is found that the expansion rate can reach 1.3 times, the tube expansion rate is more than 1.14 times.
  • S445J2 high performance super pure ferritic stainless steel with high elastic modulus, is 1.5 times that of copper (copper modulus of elasticity is 129360Mpa) which can be used to produce more thin wall without vibration and thin wall conduct heat.
  • The thermal conductivity of S445J2 is higher than that of austenitic material, and the linear expansion coefficient is low, and the surface oxide film is off.To the small, more suitable for the higher temperature of the circulating oxidation environment.
  • S445J2 stress corrosion, cold hardening tendency, in the production of tube and tube pitted pattern. Generally do not need to do heat treatment.
  • S445J2 electrochemical corrosion resistance is good, in the higher content of NaCl solution, the potential is higher, in the negative pole state.
  • S445J2 in the anti sulfide corrosion, corrosion resistance of manganese bacteria, ammonia corrosion and other organic pollution ring. In the environment, its corrosion resistance is better than that of copper and S316L austenitic stainless steel.
  • S445J2 ultra pure ferritic stainless steel tube Erosion performance is better than that copper and titanium tube resistance, is acceptable high water speed.
  • S445J2 environment is good, is different from the copper tube, does not release the plant growth in the environment Cu2+, will not cause copper deposition and copper pollution.

In the use of S445J2 should pay attention to three brittle temperature: Brittleness at low temperature, high temperature 475 ℃ brittleness and brittleness.


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