References
■ Steel and Non-Ferrous Metal Symbols Chart (Excerpt) ● Classifications and Symbols of Steels
● Non-Ferrous Metals
Classification
Material
Symbol
Classification
Material
Symbol
Code Description
CxxxxP CxxxxPP CxxxxR CxxxxBD CxxxxBDS CxxxxBE CxxxxBF AxxxxP AxxxxPC
SM
Copper and copper alloys - sheets, plates and strips
Rolled Steels for welded structures
"M" for "Marine": Usually used in welded marine structures
SRB
Re-rolled Steels
"R" for "Re-rolled" and "B" for "Bar"
SS
Rolled steel for general structures
S for "Steel" and S for "Structure"
Light gauge sections for general structures SSC
"C" for "Cold" after SS
Copper and copper alloys - welded pipes and tubes
Steel Sheets Hot rolled mild steel sheets / plates in coil form SPH
P for "Plate" and "H" for "Hot"
N
SGP
Carbon steel tubes for piping
"GP" for "Gas Pipe"
Carbon steel tubes for boiler and heat exchangers STB
"T" for "Tube" and "B" for "Boiler·
Aluminum and Al alloys - Sheets, plates and strips
Seamless steel tubes for high-pressure gas cylinders STH
"H" for "High Pressure" after ST
STK
Carbon steel tubes for general structures
"K" for "Kozo" ("structure" in Japanese) after ST
Aluminum and Al alloys Rods, bars, and wires AxxxxBE AxxxxBD AxxxxW Aluminum and Al alloys - Extruded shapes AxxxxS
Carbon steel tubes for mechanical structures STKM
"M" for "Machine" after STK
STKS
Alloy steel tubes for structures
"S" for "Special" after STK
STPA
Alloy steel tubes for piping
"A" for "Alloy" after STP
Carbon steel tubes for pressure piping STPG
"P" for "Piping" and "G" for "General" after ST
AxxxxFD AxxxxFH
Aluminum and Al alloy castings
Carbon steel tubes for high-temperature piping STPT
"T" for "Temperature" after ST
Carbon steel tubes for high-pressure piping STS
"S" for "Special" after ST
Magnesium alloy sheets and plates MP
SUS-TP
Stainless steel tubes for piping
"T" for "Tube" and "P" for "Piping" after SUS
Carbon steels for mechanical structures SxxC
"C" for "Carbon"
Nickel-copper alloy sheets and plates NCuP
Aluminium-chromium-molybdenum steels SACM
"A" for "Al", "C" for "Cr" and "M" for "Mo"
NCuB
Nickel-copper alloy rods and bars
SCM
Chromium molybdenum steels
"C" for "Cr" and "M" for "Mo"
TB
Titanium rods and bars
SCr
Chromium steels
"Cr" for "Chromium" after "S" for "Steel"
SNC
Nickel Chromium steels
"N" for "Nickel" and "C"for "Chromium"
YBsCx
Brass castings
Nickel Chromium Molybdenum steels SNCM
"M" for "Molybdenum" in SNC
HBsCx
High-strength brass castings
"Mn" for "Manganese" "C" for "Chromium" in SMn
Manganese steels for mechanical structures Chromium steels
SMn SMnC
BCx
Bronze castings
SK
Carbon tool steels
"K" for "Kogu" ("tool" in Japanese)
PBCx
Phosphorus Bronze castings
SKC SKS SKD SKT
Hollow drill steels
"C" for "Chisel" after SK
AlBCx
Aluminum bronze castings
S for "Special" after SK D for "Die" after SK T for "Tanzo" - "forging" in Japanese after SK
Alloy tool steel
AC
Aluminum alloy castings
SKH
High-speed tool steels
"H" for "High speed" after SK
MC
Magnesium alloy castings
SUM
Free cutting sulphuric steels
"M" for "Machinability" after SU
ZDCx
Zinc alloy die castings
High-carbon chromium bearing steels SUJ
"J" for "Jikuuke" ("bearing" in Japanese) after SU
ADC
Aluminum alloy die castings
SUP
Spring steels
"P" for "Spring" after SU
MDC
Magnesium alloy die castings
SUS
Stainless Steel
"S" for "Stainless Steel" after SU
WJ
White metals
SUH
Heat-resistant Steel
"U" for "Special Usage" and "H" for "Heat"
Aluminum alloy castings for bearings AJ Copper-lead alloy castings for bearings KJ
SUH-B
Heat-resistant steel bars
"B" for "Bar" after SUH
SUHP
Heat-resistant steel sheets
"P" for "Plate" after SUH
SF
Carbon steel forgings for general use
"F" for "Forging"
Carbon steel booms and billets for forgings SFB
"B" for "Billet" after SF
Chromium molybdenum steel forgings SFCM
"C" for "Chromium" and "M" for "Molybdenum" after SF
Nickel Chromium Molybdenum steel forgings SFNCM
"N" for "Nickel" in SFCM
FC
Gray cast iron
"F" for "Ferrous" and "C" for "Casting"
Spherical graphite / Ductile cast irons FCD
"D" for "Ductile" after FC
FCMB
Blackheart malleable cast irons
"M" for "Malleable" and "B" for "Black" after FC
FCMW
Whiteheart malleable cast irons
"W" for "White" after FCM
FCMP
Pearlite malleable cast iron
"P" for "Pearlite" after FCM
SC
Carbon cast steels
"C" for "Casting"
SCS
Cast stainless steels
"S" for "Stainless Steel" after SC
SCH
Heat-resistant cast steels
"H" for "Heat" after SC
SCMnH
High-manganese cast steels
"Mn" for "Manganese" and "H" for "High" after SC
N71
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