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Analysis of heat treatment methods about LCB and LCC

             Summary
LCB and LCC are kinds of the low temperature ferrite steel often used on ball valve. Low-temperature steel, according to the requirements of ASTM A352 / A352M, is suitable for the condition from -46℃0℃. The requirement of the low temperature performance is higher, because the mechanical performance of C-Mn steel will be significantly reduced in the low temperature working condition. In order to make LCB and LCC satisfy the requirement of ASTM standard, the heat treatment method has some particularity and difficulty.
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The introduction of Ferrite low-temperature steel

 

Ferrite low-temperature steel is an important material used for low temperature ball valve. Tipvalve can manufacture low temperature ball valves with Ferrite low-temperature steel such as LF2, LCB and LCC.
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low-temperature steel used for ball valve

           The low-temperature steel is suitable for alloy applied below 0 ℃. Cryogenic steel or ultra-low temperature steel can be used below -196 ℃. Low-temperature steel mainly has the following performances: (1) Toughness-brittle transition temperature is lower than using temperature(2) Strength meeting the design requirements  (3) Stable organization structure under using temperature  (4) Good weldability and processing-molding performance  (5) Some special applications also require lowest magnetic conductance and cold shrinkage rate.

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