Aisi 303 Stainless Steel Fasteners Specification

TorqBolt is an exclusive manufacturer of PED certified Austenitic Stainless Steel Aisi 303 Stainless Steel Fasteners.

AISI 303 is most easily machinable Steel of all austenitic grades of stainless steel. This property is due to presence of sulphur in the steel composition, as the sulphur content improves machining, decreases corossion resistance although it remains good in mild environment and reduces the toughness. It is not advisable to use it in marine environments. It has good oxidation resistance when it is exposed to higher temperatures as 760 Degrees celcious. however, it starts to show carbide precipitation at prolonged exposure to higher temperatures. It is easily cold worked, however sharp bending is not advisable.

Aisi 303 Stainless Steel Fasteners Properties

Chemical Properties
CMnPSSiCrNi
0.152.000.200.15-0.351.0017.0-19.08.0-10.0

Mechanical Properties
Yeild strengthTensile strengthElongationReductionHardness
Min 0.2% MpaMin MpaMin %Min %BHN
---40262

Physical Properties
DensityElastic ModulusMean Coefficient of ThermalThermal ConductivitySpecific HeatElectric Resistivity
(Kg/m3)(Gpa)Expansion(?m/m/°C)(W/m.K)0-100°C(n?.m)
802719317.316.3500720

Heat Treatment
Heat to 1010-1120°C and cool rapidly. This grade cannot be hardened by thermal treatment.

Equivalent Designation
ASTM/ASMEAISIUNSBritish StandardWerkstoff No.En NameSwedish(SS)JIS(SUS)
303S30300303S311.4305X8CrNiS18-92346SUS 303

Cold Forged Fasteners, Hot Forged Fastener, C-Machined Components / Fasteners, CNC Machined Components / Fasteners, Custom Machined Components / Fasteners, Threaded Components / Fasteners, Non-Threaded Components / Fasteners, Bar Stock Machined Components / Fasteners.