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美标法兰常用材质SA350LF2介绍

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化学成分含量

Carbon      C    max  0.30

Manganese   Mn   0.60–1.35

Phosphorus   P   max  0.035

Sulfur       S   max 0.040

Silicon Si 0.15–0.30

Nickel       Ni   0.40 max

Chromium    Cr   0.30 max

Molybdenum  Mo  0.12 maxB,

Copper       Cu  0.40 max

Columbium   Co  0.02 max

Vanadium     V  0.08 max

This is a grade of carbon steel intended primarily for low-temperature service and requires notch toughness testing. Very similar to SA105N, this material is used in more industrial applications such as the oil and gas industries.

We can supply large diameter flanges of all types in SA350LF2, from 18” to 60”, in a wide variety of pressure classes.

Heat Treatment: heat to a temperature that produces an austenitic structure holding sufficient time to attain uniform temperature throughout; then Normalize, and/or Temper; and/or Quench.