AISI 321 Springs
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We could produce AISI 321 springs,321 springs,321 Compression Springs,AISI 321 Extension Springs,AISI 321 Torsion Springs,321 tension spring, AISI 321 disc spring, AISI 321 wave spring,321 Spiral Springs,AISI 321 Automotive Springs,AISI 321 Elevator Springs,AISI 321 coil springs,AISI 321 Conical Springs,AISI 321 Tapered Springs,AISI 321 Barrel Springs,321 die springs,321 Constant Force Springs,321 Power Springs,321 Garter Springs,AISI 321 retaining Springs,AISI 321 Volute Springs,AISI 321 flat springs,AISI 321 Volute Springs,AISI 321 battery springs,AISI 321 Spring Clips,AISI 321 Battery Contacts from china

The diameter of AISI 321 springs that we could do range from 0.30 mm to 3.00 mm.

Our AISI 321 springs come in a variety of surface finishes from bluing to clear or yellow zinc electroplating, electrolytic nickel, powder coating and zinc phosphate coating always executed by specialized subcontractors

At the end of the manufacturing and stress relief cycles, clients require different and very specific types of treatments in order to improve AISI 321 spring performance. Terminal coil grinding, spring setting, internal and external tumbling, shot peen and vibration are the most common ones.

AISI 321 is suitable for wet-corrosive service but also has good mechanical strength at high temperatures.

The chemical composition of 321 springs is as follows


0.08 max


17 - 19




2 max


9 - 12


0.045 max


1 max


0.03 max


Min:5 x C

The mechanical property of AISI 321 spring is as follows

Mechanical Properties
Average Elevated Temperature TensileProperties

Temperature,  °F

Ultimate Tensile Strength, MPA

.2% Yield Strength, MPA




We could do solution treatment and ageing treatment for AISI 321 springs as per the requirement of the clients.

We could supply inspection certificate of AISI 321 springs by third party,like TUV,DNV,GL,BV,SGS and so on

In order to control the quality of 321 springs, we have following inspection equipment:Magnetic Particle Flaw Detector,Hot Coil Spring Production Line.Fatigue Testing Machine,Hardening Furnace,Optical Emission Spectrometry,Spring Coiler,Salt Spray Test Machine,Shot Blaster Machine,Automatic Spring Coiler,Electric Temper Furnace,Electric Temper Furnace,Automatic Spring Coiler,Pressure Testing Machine20mm CNC Spring Coiler,Spring Grinder,Pressure Testing Machine

Our 321 springs are widely used in Hydro-carbon industries,Electronics & electrical companies,Fertilizers manufacturing companies,Chemical industries,Steel pipes manufacturing industries,Construction companies,Gas processing units,Pharmaceutical drugs manufacturing companies,Oil drilling companies and so on

Please send us the drawing of AISI 321 springs that you need, we are glad to quote the best price for your side.

Except AISI 321 Springs,we also could produce AISI 321 flanges,AISI 321 plates,AISI 321 fasteners,AISI 321 bolts,AISI 321 pipe fittings,AISI 321 pipes,AISI 321 tubes,AISI 321 bars