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

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

Our 321H 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 321H spring performance. Terminal coil grinding, spring setting, internal and external tumbling, shot peen and vibration are the most common ones.

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

The chemical composition of 321 H springs is as follows




0.04 - 0.10





max (S)


max (Si)



17.0 – 20.0


9.0 – 12.0


0.1 Max.




Ti=4(C) to 0.60%

The mechanical property of 321H spring is as follows



Tensile  strength

69600 psi

Yield  strength

29700 ksi

Elongation  at break


Hardness,  Brinell


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

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

In order to control the quality of 321 H 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 H springs are widely used in bearing industry, power-generation including steam and gas-turbine, wind energy, mining and construction equipment, oil & gas, petrochemical, defense, rail transportation, and a wide variety of general industrial applications and so on

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

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