Common valve materials List of erosion resistance of standard valve materials

Common valve materials List of erosion resistance of standard valve materials

The commonly used material standards for valves are listed in this paper. Includes GB/T 1220-92 stainless steel rod GB/T 12225-2005 general purpose valve copper alloy casting GB/T 12226-2005 general purpose valve gray cast iron technical conditions GB/T 12227-2005 general purpose valve ductile cast iron technical conditions GB/T 12228-89 general valve carbon steel forgings technical conditions GB/T 12229-2005 valve standard..
Standard for common valve materials
National standard
GB/T 1220-92 Stainless Steel bar
GB/T 12225-2005 General purpose valve copper alloy castings – Technical specifications
GB/T 12226-2005 General purpose valve gray cast iron specifications
GB/T 12227-2005 universal valve ductile iron – Technical conditions
GB/T 12228-89 general valve carbon steel forging specifications
Specification for carbon steel castings of GB/T 12229-2005 General purpose valves
GB/T 12230-2005 General purpose valve austenite castings technical specifications
GB/T 12459-2005 steel butt welded seamless pipe fittings
GB/T 699-99 mass carbon structural steel
GB/T 2967-89 Cast tungsten carbide
GB/T 3087-99 Seamless steel tubes for low and medium pressure boilers
GB/T 3091-2001 Welded steel tubes for low pressure fluid transport
GB/T 6479-2000 Seamless steel tubes for high pressure fertilizer equipment
GB/T 8491-87 Corrosion resistant cast iron
GB/T 9457-88 Heat resistant cast iron
Seamless steel tubes for petroleum cracking
GB/T 17107-97 Structural steels for forging — grades and mechanical properties
GB/T 17395-1998 Seamless steel pipe dimensions, appearance, weight and allowable deviations
GB/T 18983-2003 oil quenched tempering spring wire
Seamless steel tubes for cryogenic pipes
GB/T 19189-2003 tempering steel plate for pressure vessels
Mechanical standard
JB/T 5300-91 Universal valve material
JB/T 6438 — 1992 Technical requirements for plasma arc surfacing of valve sealing surfaces
JB/T 6617 — 1993 Technical specification of flexible graphite packing ring for valves
JB/T 7248 — 1994 Technical specifications for low temperature steel castings for valves
JB/T 7744 — 1995 Alloy powder for plasma arc surfacing of valve sealing surfaces
JB/T 7744 — 1995 Alloy powder for plasma arc surfacing of valve sealing surfaces
JB/T 9142 — 1999 Technical specifications for corrosion retarded asbestos packing for valves
JB/T 5263-2005 Steel casting parts for power station valves
JB/T 10507-2005 Metal bellows for valves
Chromium vanadium spring wire for valves
Petroleum standard
Sh3401-3410-1996 Collection of Standards for petrochemical pipeline materials
For more standards, see the Guide to Standards
Valve body size usually must meet certain standard requirements, especially in the diameter size, interface connection end – flange connection end, butt welding end, sleeve welding end, mouth end and surface distance, different types of valves usually have different applicable standards. Can refer to ASMEB16.34, API, EN12516, DIN, GB, JIS and other valves and actuator connection mode Iron King valve using ISO5211 platform and actuator connection. Such as high platform design ball valve can be installed directly with the actuator; Low and medium platform design ball valves…
List of erosion resistance of materials
BRONZE
ALUMINUMBRONZE
Increased resistance to erosion
ALLOY20MONEL
Hastellloyd BC (Nickel base alloys B and C)
TYPE316 (316 Stainless Steel)
TYPE304 (304 Stainless Steel)
KMONEL17-4PH4ORC (17-4 Stainless Steel)
TYPE41640RCINCOLNEL
TYPE304TYPE316ALLOY6FACEDTYPE44060RC (440 stainless steel)
CHROMETUNGSTENCARB>
CERAMIC
Table 8 Applicable Temperature range of commonly used soft seat materials Valve Body Size Valve body size usually must meet certain standard requirements, especially in diameter size, connection end – flange end, butt welded end, sleeve welded end, mouth end and face distance. Different types of valves usually have different applicable standards. Refer to ASMEB16.34, API, EN12516, DIN, GB, JIS, etc
Applicable media refer to Table 6 “Corrosion Resistance Table of Metallic Materials”
Seal grade
Executive mechanism
Type of actuator valve and actuator connection mode Iron King valve adopts ISO5211 platform and actuator connection. Such as high platform design ball valve can be installed directly with the actuator; Ball valves designed for low and medium platforms can be connected to the valve platform with the corresponding bracket, and then the actuator is connected to the bracket
Actuator selection principle basis: valve type, specification, structure valve opening and closing torque
Compare high ambient temperature and fluid temperature
Usage mode and usage times
Opening and closing speed and time Stem diameter and direction of rotation
Mode of connection to valve
Power parameters: electric power supply pressure, phase number, pneumatic air pressure
Special consideration: low temperature, explosion-proof, waterproof, fireproof and other general or do not need automatic control of the valve select “manual”; Quick open and close valve select “pneumatic”; Automatic control and remote control valve select “electric”; Inflammable and explosive pipeline selection “explosion-proof type” valve commonly used materials
Common metal materials
WCB/A105 Carbon steel
Commonly used valve body and internal materials. It is usually used for air, hydrocarbons, non-corrosive liquids and gases, saturated steam and superheated steam in the temperature range of -29℃ to 426℃.
Cast steel corresponding standard number: ASTMA216WCB/DIN17245 — 1.0619/AFNORA48C — M/BS1504-16/JISSCPH2.
Common trade name: GS-C25N/WCB. Forged steel corresponding standard number: ASTMA105.
Common trade names: GS-C25N, WCB (cadt) /A105(forge)
LCB Low temperature carbon steel
This material is mainly used for air, hydrocarbons, non-corrosive liquids and gases, saturated steam and superheated steam in the temperature range of -45℃ to 345℃.
The corresponding standard number of cast steel is ASTMA352gr.LCB/DIN17245-1.1138/AFNORFB-M/BS1504-161/JISSCPL1.
Common trade name: GS-CK24, LCB
WC6 high temperature carbon steel
This material is suitable for high temperature conditions because of its good creep resistance. From the point of view of corrosion protection, suitable for the temperature range between -28℃ to 593℃ hydrocarbons, liquids and gases, non-corrosive vaporizer, saturated steam and superheated steam. WC6 is more difficult to cast than WCB, and it is also more difficult to weld.
Cast steel corresponding standard number: ASTMA217WC6/DIN17245 — 1.7357/AFNOR15CD505 — M/BS1504-621/JISSCPH21.
Common trade name: GS17CrMo55, WC6.
WC9 high-temperature carbon steel
WC9 and WC6 belong to the same material, suitable for the same medium WC6, but the temperature range is higher, -28℃ to 595℃. Welding or welding repair is very difficult.
Cast steel corresponding standard number: ASTMA217WC9/DIN17245 — 1.7357/AFNOR15CD505 — M/BS1504-621/JISSCPH21.
Common trade name: WC9
316/CF8M stainless steel
316 stainless steel is often used for corrosive media, such as organic or inorganic acids, but not for hydrochloric, sulfuric and phosphoric acid. Its corrosion resistance is better than 304. Due to the presence of molybdenum, the creep resistance at high temperature is improved. Typical temperatures range from -253℃ to 815℃.
Cast steel corresponding standard number: ASTMA351CF8M/AISI316 / DIN17445-1.4408 / AFNORZ6CND18 c15 / JISSCS14A. 10.3 M/BS1505-316
Corresponding standard number: forged steel ASTMA182 / A240gr F316 / AISI316 / DIN17440-1.4401
G-X6CrNiMo1810(cast)/X5CrNiMo1810(forge)
316L/CF3M Stainless Steel
316L stainless steel is the low-carbon type of 316, with improved welding performance and higher corrosion resistance than 316 at high temperature. The application condition is similar to that of 316, with a relatively high temperature of 455℃.
Cast steel corresponding standard number: ASTMA351CF3M/AISI316L/DIN17440-1.4404 / AFNORZ2CND18 c12 / JISSCS16A. 12.3 M/BS1504-316
Common trade name: 316L