The SGS-75 alloy based on nickel and chromium is particularly effective in terms of its resistance to seizure in contact with stainless steels. Its stainless and self-lubricating properties allow it to be used for the production of moving parts in contact with stainless steels, without lubrication, with reduced operating clearance.
SEVA Designation : SGS-75
Standard designation :
ASTM A494M grade CY5SnBiM
Ni : Bal
C : 0.05 max
Cr : 11-14
Mo : 2-3.5
Si : 0.05 max
Mn : 1. max
Fe : 2 max
Bi : 3-5
Sn : 3-5
Hardness: 145 HB
Tensile test at room temperature:
|Rp0,2 (MPa)||Rm (MPa)||A (%)|
Flexural modulus (Young): 185 GPa
Areas of use
• Food industry
Maximum temperature of use
Types of parts produced
Chemical, pharmaceutical and food industries: applications involving dry friction with stainless steels such as 316 L:
• Rotating or static parts of pumps: rotors, pistons etc.
• Filling systems: rotary valves, dosing sprues etc.
Nuclear industry: bearings and other components for handling systems in hostile environments. Wide range of standard parts available on request: round bars (cylinders) and bushings (hollow bars).
The microstructure of the SGS-75 alloy consists of an austenitic matrix rich in nickel, chromium and molybdenum.
The secondary phase rich in tin and bismuth gives the alloy tribological properties.
Density at 20°C: 8,5
Approximate melting range: 140°C - 1470°C
|Oxidization resistance||●●●●●||Results available
to ascertain compatibility
with food products
time of exposure.
SEVA produces the SGS-75 alloy in an electric induction furnace.
Cast in a sand mold.
Heat treatment: none.
|Machining||●●●●○||Vitesse de coupe
30 à 50 m/min
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