Cast iron is an iron-carbon alloy with a carbon content of more than 2%. Generally speaking, the cast iron valves we use are ductile iron, which is obtained by spheroidizing gray cast iron molten iron. The precipitated graphite is in the form of spheroids, which is referred to as ductile iron. It has higher strength, better toughness and plasticity than ordinary gray cast iron.
» Cast or Ductile Iron Body with Bronze Mounted
» Stainless Steel, A276 Type 410 or GR. 431 Shaft
» Fusion Bonded Epoxy Coating
» Sizes: DN50 through DN1200
» Body Styles: Flanged or Wafer Ends
» Pressure Class: ANSI #125, #150, PN10 or PN16
» Optional Counterweight or Bypass Devices
» ASME B16.34, EN1171, DIN 3202, BS 4504
» ASME B16.10, MSS SP-71, BS EN558
» ASME B16.1 CLASS 125, ASME B16.5 CL150, EN1092, EN12226
» ISO 5208, API 598
What is the difference between cast iron valves and cast steel valves?
The main difference between cast iron and iron steel valves is the carbon content, which directly affects the strength and plasticity of the steel. Carbon steel is also called carbon steel, an iron-carbon alloy with a carbon content of less than 2%. In addition to carbon, carbon steel generally contains small amounts of silicon, manganese, sulfur, and phosphorus. According to its use, carbon steel can be divided into three categories: carbon structural steel, carbon tool steel, and free-cutting structural steel. Carbon structural steel is divided into two types: building structural steel and machine-made structural steel: according to the carbon content, carbon steel can be divided into low carbon steel (WC ≤ 0.25%), medium carbon steel (WC0.25%-0.6% ) and high carbon steel (WC>0.6%. According to the phosphorus and sulfur content, carbon steel can be divided into ordinary carbon steel (higher phosphorus and sulfur content) and high-quality carbon steel (lower phosphorus and sulfur content) and high-grade high-quality steel (containing lower phosphorus and sulfur). Generally, the higher the carbon content in carbon steel, the higher the hardness and strength, but the lower plasticity.
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