SGS-X23-24 stainless alloy is a "duplex" alloy that belongs to the family of austenitic stainless steels. It has a corrosion resistance at least equivalent to common austenitic steels, as well as significantly better mechanical properties and abrasion resistance.
SEVA designation: SGS-X23-24
Chemical analysis (in%)
Standardized: (NF EN 10088)
Fe : Bal
C : 0.1 max
Cr : 23-27
Ni : 4.5-7
Si : 1 max
Mn : 2 max
Mo : 1.3-1.8
N : <0.2
Hardness: 230 HB.
Tensile test at room temperature:
|Rp0,2 (MPa)||Rm (MPa)||A (%)|
Areas of use
• Paper Industry
• Petrochemical industry
• Dyeing industry
• Transformation industries implying relatively strong chemical, mechanical and abrasive stress
Maximum temperature of use
Types of parts produced
• Pump shafts
• Miscellaneous parts
Approximately 50 % austenite and 50 % ferrite.
Approximate melting range: 1350 - 1450°C
The main characteristic of the SGS-X23-24 alloy is a better pitting resistance than common austenitic steels (304, 316L).
It is also extremely resistant to stress corrosion, particularly in the presence of anions Cl- or de H2S.
Thanks to its hardness, this steel can be used for applications that require good resistance to corrosion and to abrasion.
Thermal conductivity: 25 W.m-1.K-1
SEVA produces the SGS-X23-24 alloy in an electric induction furnace, under an Argon gas protective atmosphere.
Cast in a sand mold.
Heat treatment: Mechanical reinforcement by carbide precipitation.
~ 70 - 80 m/min
(with carbide tools M type)
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